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Commit 814600ee authored by Tejun Heo's avatar Tejun Heo Committed by Jeff Garzik
Browse files

libata-link: add PMP related ATA constants 



Add Port Multiplier related ATA constants and macros.  Some of these
will be used by ata_link implementation.

Signed-off-by: default avatarTejun Heo <htejun@gmail.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent fee7ca72

include/linux/ata.h

+29 −0
Original line number Diff line number Diff line
@@ -164,6 +164,8 @@ enum { 
	ATA_CMD_SET_MAX		= 0xF9,

	ATA_CMD_SET_MAX_EXT	= 0x37,

	ATA_CMD_READ_LOG_EXT	= 0x2f,

	ATA_CMD_PMP_READ	= 0xE4,

	ATA_CMD_PMP_WRITE	= 0xE8,



	/* READ_LOG_EXT pages */

	ATA_LOG_SATA_NCQ	= 0x10,
@@ -212,6 +214,28 @@ enum { 
						   0=to device, 1=to host */

	ATAPI_CDB_LEN		= 16,



	/* PMP stuff */

	SATA_PMP_MAX_PORTS	= 15,

	SATA_PMP_CTRL_PORT	= 15,



	SATA_PMP_GSCR_DWORDS	= 128,

	SATA_PMP_GSCR_PROD_ID	= 0,

	SATA_PMP_GSCR_REV	= 1,

	SATA_PMP_GSCR_PORT_INFO	= 2,

	SATA_PMP_GSCR_ERROR	= 32,

	SATA_PMP_GSCR_ERROR_EN	= 33,

	SATA_PMP_GSCR_FEAT	= 64,

	SATA_PMP_GSCR_FEAT_EN	= 96,



	SATA_PMP_PSCR_STATUS	= 0,

	SATA_PMP_PSCR_ERROR	= 1,

	SATA_PMP_PSCR_CONTROL	= 2,



	SATA_PMP_FEAT_BIST	= (1 << 0),

	SATA_PMP_FEAT_PMREQ	= (1 << 1),

	SATA_PMP_FEAT_DYNSSC	= (1 << 2),

	SATA_PMP_FEAT_NOTIFY	= (1 << 3),



	/* cable types */

	ATA_CBL_NONE		= 0,

	ATA_CBL_PATA40		= 1,
@@ -418,4 +442,9 @@ static inline int lba_48_ok(u64 block, u32 n_block) 
	return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);

}



#define sata_pmp_gscr_vendor(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)

#define sata_pmp_gscr_devid(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)

#define sata_pmp_gscr_rev(gscr)		(((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)

#define sata_pmp_gscr_ports(gscr)	((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)



#endif /* __LINUX_ATA_H__ */