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Commit 48515f6c authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

libata: separate PMP support code from core code 



Most of PMP support code is already in libata-pmp.c.  All that are in
libata-core.c are sata_pmp_port_ops and EXPORTs.  Move them to
libata-pmp.c.  Also, collect PMP related prototypes and declarations
in header files and move them right above of SFF stuff.

This change is to make PMP support optional.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
parent 127102ae

drivers/ata/libata-core.c

+0 −13
Original line number Diff line number Diff line
@@ -86,15 +86,6 @@ const struct ata_port_operations sata_port_ops = { 
	.hardreset		= sata_std_hardreset,

};



const struct ata_port_operations sata_pmp_port_ops = {

	.inherits		= &sata_port_ops,



	.pmp_prereset		= ata_std_prereset,

	.pmp_hardreset		= sata_std_hardreset,

	.pmp_postreset		= ata_std_postreset,

	.error_handler		= sata_pmp_error_handler,

};



static unsigned int ata_dev_init_params(struct ata_device *dev,

					u16 heads, u16 sectors);

static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
@@ -6192,7 +6183,6 @@ EXPORT_SYMBOL_GPL(sata_deb_timing_hotplug); 
EXPORT_SYMBOL_GPL(sata_deb_timing_long);

EXPORT_SYMBOL_GPL(ata_base_port_ops);

EXPORT_SYMBOL_GPL(sata_port_ops);

EXPORT_SYMBOL_GPL(sata_pmp_port_ops);

EXPORT_SYMBOL_GPL(ata_dummy_port_ops);

EXPORT_SYMBOL_GPL(ata_dummy_port_info);

EXPORT_SYMBOL_GPL(ata_std_bios_param);
@@ -6272,9 +6262,6 @@ EXPORT_SYMBOL_GPL(ata_pci_device_resume); 
#endif /* CONFIG_PM */

#endif /* CONFIG_PCI */



EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);

EXPORT_SYMBOL_GPL(sata_pmp_error_handler);



EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);

EXPORT_SYMBOL_GPL(ata_ehi_push_desc);

EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);

drivers/ata/libata-pmp.c

+12 −0
Original line number Diff line number Diff line
@@ -11,6 +11,14 @@ 
#include <linux/libata.h>

#include "libata.h"



const struct ata_port_operations sata_pmp_port_ops = {

	.inherits		= &sata_port_ops,

	.pmp_prereset		= ata_std_prereset,

	.pmp_hardreset		= sata_std_hardreset,

	.pmp_postreset		= ata_std_postreset,

	.error_handler		= sata_pmp_error_handler,

};



/**

 *	sata_pmp_read - read PMP register

 *	@link: link to read PMP register for
@@ -1012,3 +1020,7 @@ void sata_pmp_error_handler(struct ata_port *ap) 
	sata_pmp_eh_recover(ap);

	ata_eh_finish(ap);

}



EXPORT_SYMBOL_GPL(sata_pmp_port_ops);

EXPORT_SYMBOL_GPL(sata_pmp_qc_defer_cmd_switch);

EXPORT_SYMBOL_GPL(sata_pmp_error_handler);

drivers/ata/libata.h

+5 −5
Original line number Diff line number Diff line
@@ -179,11 +179,6 @@ extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); 
extern void ata_scsi_dev_rescan(struct work_struct *work);

extern int ata_bus_probe(struct ata_port *ap);



/* libata-pmp.c */

extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);

extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);

extern int sata_pmp_attach(struct ata_device *dev);



/* libata-eh.c */

extern enum scsi_eh_timer_return ata_scsi_timed_out(struct scsi_cmnd *cmd);

extern void ata_scsi_error(struct Scsi_Host *host);
@@ -207,6 +202,11 @@ extern int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset, 
			  struct ata_link **r_failed_disk);

extern void ata_eh_finish(struct ata_port *ap);



/* libata-pmp.c */

extern int sata_pmp_scr_read(struct ata_link *link, int reg, u32 *val);

extern int sata_pmp_scr_write(struct ata_link *link, int reg, u32 val);

extern int sata_pmp_attach(struct ata_device *dev);



/* libata-sff.c */

#ifdef CONFIG_ATA_SFF

extern void ata_dev_select(struct ata_port *ap, unsigned int device,

include/linux/libata.h

+10 −7
Original line number Diff line number Diff line
@@ -1026,12 +1026,6 @@ static inline int ata_acpi_cbl_80wire(struct ata_port *ap, 
}

#endif



/*

 * PMP - drivers/ata/libata-pmp.c

 */

extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);

extern void sata_pmp_error_handler(struct ata_port *ap);



/*

 * EH - drivers/ata/libata-eh.c

 */
@@ -1075,7 +1069,6 @@ extern void ata_std_error_handler(struct ata_port *ap); 
 */

extern const struct ata_port_operations ata_base_port_ops;

extern const struct ata_port_operations sata_port_ops;

extern const struct ata_port_operations sata_pmp_port_ops;



#define ATA_BASE_SHT(drv_name)					\

	.module			= THIS_MODULE,			\
@@ -1352,6 +1345,16 @@ static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host) 
	return *(struct ata_port **)&host->hostdata[0];

}





/**************************************************************************

 * PMP - drivers/ata/libata-pmp.c

 */

extern const struct ata_port_operations sata_pmp_port_ops;



extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);

extern void sata_pmp_error_handler(struct ata_port *ap);





/**************************************************************************

 * SFF - drivers/ata/libata-sff.c

 */