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	#define ATA_SC_IPM_MASK 0x00000f00			#define ATA_SC_IPM_MASK 0x00000f00
	#define ATA_SC_IPM_NONE 0x00000000			#define ATA_SC_IPM_NONE 0x00000000
	#define ATA_SC_IPM_DIS_PARTIAL 0x00000100			#define ATA_SC_IPM_DIS_PARTIAL 0x00000100
	#define ATA_SC_IPM_DIS_SLUMBER 0x00000200			#define ATA_SC_IPM_DIS_SLUMBER 0x00000200

	#define ATA_SACTIVE 16			#define ATA_SACTIVE 16

	/* DMA register defines */			/* DMA register defines */
	#define ATA_DMA_ENTRIES 256			#define ATA_DMA_ENTRIES MAX(17, btoc(maxphys) + 1)
	#define ATA_DMA_EOT 0x80000000			#define ATA_DMA_EOT 0x80000000

	#define ATA_BMCMD_PORT 17			#define ATA_BMCMD_PORT 17
	#define ATA_BMCMD_START_STOP 0x01			#define ATA_BMCMD_START_STOP 0x01
	#define ATA_BMCMD_WRITE_READ 0x08			#define ATA_BMCMD_WRITE_READ 0x08

	#define ATA_BMDEVSPEC_0 18			#define ATA_BMDEVSPEC_0 18
	#define ATA_BMSTAT_PORT 19			#define ATA_BMSTAT_PORT 19
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