Commit c1bc899f authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

libata: reorganize ata_port_operations 



Over the time, ops in ata_port_operations has become a bit confusing.
Reorganize.  SFF/BMDMA ops are separated into separate a group as they
will be taken out of ata_port_operations later.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
parent f08048e9

include/linux/libata.h

+61 −56
Original line number Diff line number Diff line
@@ -665,69 +665,74 @@ struct ata_port { 
};



struct ata_port_operations {

	void (*dev_config) (struct ata_device *);



	void (*set_piomode) (struct ata_port *, struct ata_device *);

	void (*set_dmamode) (struct ata_port *, struct ata_device *);

	unsigned long (*mode_filter) (struct ata_device *, unsigned long);



	void (*tf_load) (struct ata_port *ap, const struct ata_taskfile *tf);

	void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);



	void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);

	u8   (*check_status)(struct ata_port *ap);

	u8   (*check_altstatus)(struct ata_port *ap);

	void (*dev_select)(struct ata_port *ap, unsigned int device);



	void (*phy_reset) (struct ata_port *ap); /* obsolete */

	int  (*set_mode) (struct ata_link *link, struct ata_device **r_failed_dev);



	int (*cable_detect) (struct ata_port *ap);



	int  (*check_atapi_dma) (struct ata_queued_cmd *qc);



	void (*bmdma_setup) (struct ata_queued_cmd *qc);

	void (*bmdma_start) (struct ata_queued_cmd *qc);



	unsigned int (*data_xfer) (struct ata_device *dev, unsigned char *buf,

				   unsigned int buflen, int rw);



	/*

	 * Command execution

	 */

	int  (*qc_defer)(struct ata_queued_cmd *qc);

	int  (*check_atapi_dma)(struct ata_queued_cmd *qc);

	void (*qc_prep)(struct ata_queued_cmd *qc);

	unsigned int (*qc_issue)(struct ata_queued_cmd *qc);



	/* port multiplier */

	void (*pmp_attach) (struct ata_port *ap);

	void (*pmp_detach) (struct ata_port *ap);



	/* Error handlers.  ->error_handler overrides ->eng_timeout and

	 * indicates that new-style EH is in place.

	/*

	 * Configuration and exception handling

	 */

	void (*eng_timeout) (struct ata_port *ap); /* obsolete */

	int  (*cable_detect)(struct ata_port *ap);

	unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);

	void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);

	void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);

	int  (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);



	void (*dev_config)(struct ata_device *dev);



	void (*freeze)(struct ata_port *ap);

	void (*thaw)(struct ata_port *ap);

	void (*error_handler)(struct ata_port *ap);

	void (*post_internal_cmd)(struct ata_queued_cmd *qc);



	irq_handler_t irq_handler;

	void (*irq_clear) (struct ata_port *);

	u8 (*irq_on) (struct ata_port *);



	/*

	 * Optional features

	 */

	int  (*scr_read)(struct ata_port *ap, unsigned int sc_reg, u32 *val);

	int  (*scr_write)(struct ata_port *ap, unsigned int sc_reg, u32 val);

	void (*pmp_attach)(struct ata_port *ap);

	void (*pmp_detach)(struct ata_port *ap);

	int  (*enable_pm)(struct ata_port *ap, enum link_pm policy);

	void (*disable_pm)(struct ata_port *ap);



	/*

	 * Start, stop, suspend and resume

	 */

	int  (*port_suspend)(struct ata_port *ap, pm_message_t mesg);

	int  (*port_resume)(struct ata_port *ap);

	int (*enable_pm) (struct ata_port *ap, enum link_pm policy);

	void (*disable_pm) (struct ata_port *ap);

	int  (*port_start)(struct ata_port *ap);

	void (*port_stop)(struct ata_port *ap);



	void (*host_stop)(struct ata_host *host);



	/*

	 * SFF / taskfile oriented ops

	 */

	void (*dev_select)(struct ata_port *ap, unsigned int device);

	u8   (*check_status)(struct ata_port *ap);

	u8   (*check_altstatus)(struct ata_port *ap);

	void (*tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);

	void (*tf_read)(struct ata_port *ap, struct ata_taskfile *tf);

	void (*exec_command)(struct ata_port *ap, const struct ata_taskfile *tf);

	unsigned int (*data_xfer)(struct ata_device *dev, unsigned char *buf,

				  unsigned int buflen, int rw);

	u8   (*irq_on)(struct ata_port *);



	void (*irq_clear)(struct ata_port *);

	void (*bmdma_setup)(struct ata_queued_cmd *qc);

	void (*bmdma_start)(struct ata_queued_cmd *qc);

	void (*bmdma_stop)(struct ata_queued_cmd *qc);

	u8   (*bmdma_status)(struct ata_port *ap);



	/*

	 * Obsolete

	 */

	void (*phy_reset)(struct ata_port *ap);

	void (*eng_timeout)(struct ata_port *ap);

	irq_handler_t irq_handler;

};



struct ata_port_info {

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