arch/mips/include/asm/sn/addrs.h - kernel/quantenna - Git at Google

 /*
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
  * Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
  * Copyright (C) 1999, 2000 by Ralf Baechle
  */
 #ifndef _ASM_SN_ADDRS_H
 #define _ASM_SN_ADDRS_H


 #ifndef __ASSEMBLY__
 #include <linux/smp.h>
 #include <linux/types.h>
 #endif /* !__ASSEMBLY__ */

 #include <asm/addrspace.h>
 #include <asm/sn/kldir.h>

 #if defined(CONFIG_SGI_IP27)
 #include <asm/sn/sn0/addrs.h>
 #elif defined(CONFIG_SGI_IP35)
 #include <asm/sn/sn1/addrs.h>
 #endif


 #ifndef __ASSEMBLY__

 #define PS_UINT_CAST		(unsigned long)
 #define UINT64_CAST		(unsigned long)

 #define HUBREG_CAST		(volatile hubreg_t *)

 #else /* __ASSEMBLY__ */

 #define PS_UINT_CAST
 #define UINT64_CAST
 #define HUBREG_CAST

 #endif /* __ASSEMBLY__ */


 #define NASID_GET_META(_n)	((_n) >> NASID_LOCAL_BITS)
 #ifdef CONFIG_SGI_IP27
 #define NASID_GET_LOCAL(_n)	((_n) & 0xf)
 #endif
 #define NASID_MAKE(_m, _l)	(((_m) << NASID_LOCAL_BITS) | (_l))

 #define NODE_ADDRSPACE_MASK	(NODE_ADDRSPACE_SIZE - 1)
 #define TO_NODE_ADDRSPACE(_pa)	(UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)

 #define CHANGE_ADDR_NASID(_pa, _nasid)	\
 		((UINT64_CAST(_pa) & ~NASID_MASK) | \
 		 (UINT64_CAST(_nasid) <<  NASID_SHFT))


 /*
  * The following macros are used to index to the beginning of a specific
  * node's address space.
  */

 #define NODE_OFFSET(_n)		(UINT64_CAST (_n) << NODE_SIZE_BITS)

 #define NODE_CAC_BASE(_n)	(CAC_BASE   + NODE_OFFSET(_n))
 #define NODE_HSPEC_BASE(_n)	(HSPEC_BASE + NODE_OFFSET(_n))
 #define NODE_IO_BASE(_n)	(IO_BASE    + NODE_OFFSET(_n))
 #define NODE_MSPEC_BASE(_n)	(MSPEC_BASE + NODE_OFFSET(_n))
 #define NODE_UNCAC_BASE(_n)	(UNCAC_BASE + NODE_OFFSET(_n))

 #define TO_NODE(_n, _x)		(NODE_OFFSET(_n)     | ((_x)		   ))
 #define TO_NODE_CAC(_n, _x)	(NODE_CAC_BASE(_n)   | ((_x) & TO_PHYS_MASK))
 #define TO_NODE_UNCAC(_n, _x)	(NODE_UNCAC_BASE(_n) | ((_x) & TO_PHYS_MASK))
 #define TO_NODE_MSPEC(_n, _x)	(NODE_MSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))
 #define TO_NODE_HSPEC(_n, _x)	(NODE_HSPEC_BASE(_n) | ((_x) & TO_PHYS_MASK))


 #define RAW_NODE_SWIN_BASE(nasid, widget)				\
 	(NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))

 #define WIDGETID_GET(addr)	((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))

 /*
  * The following definitions pertain to the IO special address
  * space.  They define the location of the big and little windows
  * of any given node.
  */

 #define SWIN_SIZE_BITS		24
 #define SWIN_SIZE		(UINT64_CAST 1 << 24)
 #define SWIN_SIZEMASK		(SWIN_SIZE - 1)
 #define SWIN_WIDGET_MASK	0xF

 /*
  * Convert smallwindow address to xtalk address.
  *
  * 'addr' can be physical or virtual address, but will be converted
  * to Xtalk address in the range 0 -> SWINZ_SIZEMASK
  */
 #define SWIN_WIDGETADDR(addr)	((addr) & SWIN_SIZEMASK)
 #define SWIN_WIDGETNUM(addr)	(((addr)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
 /*
  * Verify if addr belongs to small window address on node with "nasid"
  *
  *
  * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
  * address
  *
  *
  */
 #define NODE_SWIN_ADDR(nasid, addr)	\
 		(((addr) >= NODE_SWIN_BASE(nasid, 0))  && \
 		 ((addr) <  (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
 		 ))

 /*
  * The following define the major position-independent aliases used
  * in SN.
  *	UALIAS -- 256MB in size, reads in the UALIAS result in
  *			uncached references to the memory of the reader's node.
  *	CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
  *			depending on which CPU does the access to provide
  *			all CPUs with unique uncached memory at low addresses.
  *	LBOOT  -- 256MB in size, reads in the LBOOT area result in
  *			uncached references to the local hub's boot prom and
  *			other directory-bus connected devices.
  *	IALIAS -- 8MB in size, reads in the IALIAS result in uncached
  *			references to the local hub's registers.
  */

 #define UALIAS_BASE		HSPEC_BASE
 #define UALIAS_SIZE		0x10000000	/* 256 Megabytes */
 #define UALIAS_LIMIT		(UALIAS_BASE + UALIAS_SIZE)

 /*
  * The bottom of ualias space is flipped depending on whether you're
  * processor 0 or 1 within a node.
  */
 #ifdef CONFIG_SGI_IP27
 #define UALIAS_FLIP_BASE	UALIAS_BASE
 #define UALIAS_FLIP_SIZE	0x20000
 #define UALIAS_FLIP_BIT		0x10000
 #define UALIAS_FLIP_ADDR(_x)	(cputoslice(smp_processor_id()) ? \
 				 (_x) ^ UALIAS_FLIP_BIT : (_x))

 #define LBOOT_BASE		(HSPEC_BASE + 0x10000000)
 #define LBOOT_SIZE		0x10000000
 #define LBOOT_LIMIT		(LBOOT_BASE + LBOOT_SIZE)
 #define LBOOT_STRIDE		0		/* IP27 has only one CPU PROM */

 #endif

 #define HUB_REGISTER_WIDGET	1
 #define IALIAS_BASE		NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
 #define IALIAS_SIZE		0x800000	/* 8 Megabytes */
 #define IS_IALIAS(_a)		(((_a) >= IALIAS_BASE) &&		\
 				 ((_a) < (IALIAS_BASE + IALIAS_SIZE)))

 /*
  * Macro for referring to Hub's RBOOT space
  */

 #ifdef CONFIG_SGI_IP27
 #define RBOOT_SIZE		0x10000000	/* 256 Megabytes */
 #define NODE_RBOOT_BASE(_n)	(NODE_HSPEC_BASE(_n) + 0x30000000)
 #define NODE_RBOOT_LIMIT(_n)	(NODE_RBOOT_BASE(_n) + RBOOT_SIZE)

 #endif

 /*
  * Macros for referring the Hub's back door space
  *
  *   These macros correctly process addresses in any node's space.
  *   WARNING: They won't work in assembler.
  *
  *   BDDIR_ENTRY_LO returns the address of the low double-word of the dir
  *		    entry corresponding to a physical (Cac or Uncac) address.
  *   BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
  *   BDPRT_ENTRY    returns the address of the double-word protection entry
  *		    corresponding to the page containing the physical address.
  *   BDPRT_ENTRY_S  Stores the value into the protection entry.
  *   BDPRT_ENTRY_L  Load the value from the protection entry.
  *   BDECC_ENTRY    returns the address of the ECC byte corresponding to a
  *		    double-word at a specified physical address.
  *   BDECC_ENTRY_H  returns the address of the two ECC bytes corresponding to a
  *		    quad-word at a specified physical address.
  */
 #define NODE_BDOOR_BASE(_n)	(NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))

 #define NODE_BDECC_BASE(_n)	(NODE_BDOOR_BASE(_n))
 #define NODE_BDDIR_BASE(_n)	(NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
 #ifdef CONFIG_SGI_IP27
 #define BDDIR_ENTRY_LO(_pa)	((HSPEC_BASE +				      \
 				  NODE_ADDRSPACE_SIZE * 3 / 4 +		      \
 				  0x200)				    | \
 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 				 UINT64_CAST(_pa) >> 3 & 0x1f << 4)

 #define BDDIR_ENTRY_HI(_pa)	((HSPEC_BASE +				      \
 				  NODE_ADDRSPACE_SIZE * 3 / 4 +		      \
 				  0x208)				    | \
 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 				 UINT64_CAST(_pa) >> 3 & 0x1f << 4)

 #define BDPRT_ENTRY(_pa, _rgn)	((HSPEC_BASE +				      \
 				  NODE_ADDRSPACE_SIZE * 3 / 4)		    | \
 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
 				 UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK  | \
 				 (_rgn) << 3)
 #define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
 #define BDPRT_ENTRY_S(_pa, _rgn, _val) (*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn))=(_val))
 #define BDPRT_ENTRY_L(_pa, _rgn)	(*(__psunsigned_t *)BDPRT_ENTRY((_pa), (_rgn)))

 #define BDECC_ENTRY(_pa)	((HSPEC_BASE +				      \
 				  NODE_ADDRSPACE_SIZE / 2)		    | \
 				 UINT64_CAST(_pa)	 & NASID_MASK	    | \
 				 UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK  | \
 				 UINT64_CAST(_pa) >> 3 & 3)

 /*
  * Macro to convert a back door directory or protection address into the
  *   raw physical address of the associated cache line or protection page.
  */
 #define BDADDR_IS_DIR(_ba)	((UINT64_CAST  (_ba) & 0x200) != 0)
 #define BDADDR_IS_PRT(_ba)	((UINT64_CAST  (_ba) & 0x200) == 0)

 #define BDDIR_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK		   | \
 				 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2  | \
 				 (UINT64_CAST(_ba) & 0x1f << 4) << 3)

 #define BDPRT_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK	    | \
 				 (UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)

 #define BDECC_TO_MEM(_ba)	(UINT64_CAST (_ba) & NASID_MASK	    | \
 				 (UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2  | \
 				 (UINT64_CAST(_ba) & 3) << 3)
 #endif /* CONFIG_SGI_IP27 */


 /*
  * The following macros produce the correct base virtual address for
  * the hub registers.  The LOCAL_HUB_* macros produce the appropriate
  * address for the local registers.  The REMOTE_HUB_* macro produce
  * the address for the specified hub's registers.  The intent is
  * that the appropriate PI, MD, NI, or II register would be substituted
  * for _x.
  */

 /*
  * WARNING:
  *	When certain Hub chip workaround are defined, it's not sufficient
  *	to dereference the *_HUB_ADDR() macros.	 You should instead use
  *	HUB_L() and HUB_S() if you must deal with pointers to hub registers.
  *	Otherwise, the recommended approach is to use *_HUB_L() and *_HUB_S().
  *	They're always safe.
  */
 #define LOCAL_HUB_ADDR(_x)	(HUBREG_CAST (IALIAS_BASE + (_x)))
 #define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +	\
 					      0x800000 + (_x)))
 #ifdef CONFIG_SGI_IP27
 #define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) +	\
 					      0x800000 + (_x)))
 #endif /* CONFIG_SGI_IP27 */

 #ifndef __ASSEMBLY__

 #define HUB_L(_a)			*(_a)
 #define HUB_S(_a, _d)			*(_a) = (_d)

 #define LOCAL_HUB_L(_r)			HUB_L(LOCAL_HUB_ADDR(_r))
 #define LOCAL_HUB_S(_r, _d)		HUB_S(LOCAL_HUB_ADDR(_r), (_d))
 #define REMOTE_HUB_L(_n, _r)		HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
 #define REMOTE_HUB_S(_n, _r, _d)	HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
 #define REMOTE_HUB_PI_L(_n, _sn, _r)	HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
 #define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))

 #endif /* !__ASSEMBLY__ */

 /*
  * The following macros are used to get to a hub/bridge register, given
  * the base of the register space.
  */
 #define HUB_REG_PTR(_base, _off)	\
 	(HUBREG_CAST((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))

 #define HUB_REG_PTR_L(_base, _off)	\
 	HUB_L(HUB_REG_PTR((_base), (_off)))

 #define HUB_REG_PTR_S(_base, _off, _data)	\
 	HUB_S(HUB_REG_PTR((_base), (_off)), (_data))

 /*
  * Software structure locations -- permanently fixed
  *    See diagram in kldir.h
  */

 #define PHYS_RAMBASE		0x0
 #define K0_RAMBASE		PHYS_TO_K0(PHYS_RAMBASE)

 #define EX_HANDLER_OFFSET(slice) ((slice) << 16)
 #define EX_HANDLER_ADDR(nasid, slice)					\
 	PHYS_TO_K0(NODE_OFFSET(nasid) | EX_HANDLER_OFFSET(slice))
 #define EX_HANDLER_SIZE		0x0400

 #define EX_FRAME_OFFSET(slice)	((slice) << 16 | 0x400)
 #define EX_FRAME_ADDR(nasid, slice)					\
 	PHYS_TO_K0(NODE_OFFSET(nasid) | EX_FRAME_OFFSET(slice))
 #define EX_FRAME_SIZE		0x0c00

 #define ARCS_SPB_OFFSET		0x1000
 #define ARCS_SPB_ADDR(nasid)						\
 	PHYS_TO_K0(NODE_OFFSET(nasid) | ARCS_SPB_OFFSET)
 #define ARCS_SPB_SIZE		0x0400

 #define KLDIR_OFFSET		0x2000
 #define KLDIR_ADDR(nasid)						\
 	TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
 #define KLDIR_SIZE		0x0400


 /*
  * Software structure locations -- indirected through KLDIR
  *    See diagram in kldir.h
  *
  * Important:	All low memory structures must only be accessed
  *		uncached, except for the symmon stacks.
  */

 #define KLI_LAUNCH		0		/* Dir. entries */
 #define KLI_KLCONFIG		1
 #define KLI_NMI			2
 #define KLI_GDA			3
 #define KLI_FREEMEM		4
 #define KLI_SYMMON_STK		5
 #define KLI_PI_ERROR		6
 #define KLI_KERN_VARS		7
 #define KLI_KERN_XP		8
 #define KLI_KERN_PARTID		9

 #ifndef __ASSEMBLY__

 #define KLD_BASE(nasid)		((kldir_ent_t *) KLDIR_ADDR(nasid))
 #define KLD_LAUNCH(nasid)	(KLD_BASE(nasid) + KLI_LAUNCH)
 #define KLD_NMI(nasid)		(KLD_BASE(nasid) + KLI_NMI)
 #define KLD_KLCONFIG(nasid)	(KLD_BASE(nasid) + KLI_KLCONFIG)
 #define KLD_PI_ERROR(nasid)	(KLD_BASE(nasid) + KLI_PI_ERROR)
 #define KLD_GDA(nasid)		(KLD_BASE(nasid) + KLI_GDA)
 #define KLD_SYMMON_STK(nasid)	(KLD_BASE(nasid) + KLI_SYMMON_STK)
 #define KLD_FREEMEM(nasid)	(KLD_BASE(nasid) + KLI_FREEMEM)
 #define KLD_KERN_VARS(nasid)	(KLD_BASE(nasid) + KLI_KERN_VARS)
 #define KLD_KERN_XP(nasid)	(KLD_BASE(nasid) + KLI_KERN_XP)
 #define KLD_KERN_PARTID(nasid)	(KLD_BASE(nasid) + KLI_KERN_PARTID)

 #define LAUNCH_OFFSET(nasid, slice)					\
 	(KLD_LAUNCH(nasid)->offset +					\
 	 KLD_LAUNCH(nasid)->stride * (slice))
 #define LAUNCH_ADDR(nasid, slice)					\
 	TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
 #define LAUNCH_SIZE(nasid)	KLD_LAUNCH(nasid)->size

 #define SN_NMI_OFFSET(nasid, slice)					\
 	(KLD_NMI(nasid)->offset +					\
 	 KLD_NMI(nasid)->stride * (slice))
 #define NMI_ADDR(nasid, slice)						\
 	TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
 #define NMI_SIZE(nasid) KLD_NMI(nasid)->size

 #define KLCONFIG_OFFSET(nasid)	KLD_KLCONFIG(nasid)->offset
 #define KLCONFIG_ADDR(nasid)						\
 	TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
 #define KLCONFIG_SIZE(nasid)	KLD_KLCONFIG(nasid)->size

 #define GDA_ADDR(nasid)		KLD_GDA(nasid)->pointer
 #define GDA_SIZE(nasid)		KLD_GDA(nasid)->size

 #define SYMMON_STK_OFFSET(nasid, slice)					\
 	(KLD_SYMMON_STK(nasid)->offset +				\
 	 KLD_SYMMON_STK(nasid)->stride * (slice))
 #define SYMMON_STK_STRIDE(nasid)	KLD_SYMMON_STK(nasid)->stride

 #define SYMMON_STK_ADDR(nasid, slice)					\
 	TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))

 #define SYMMON_STK_SIZE(nasid)	KLD_SYMMON_STK(nasid)->stride

 #define SYMMON_STK_END(nasid)	(SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)

 /* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
  * relocatable program
  */
 #define UNIX_DEBUG_LOADADDR	0x300000
 #define SYMMON_LOADADDR(nasid)						\
 	TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))

 #define FREEMEM_OFFSET(nasid)	KLD_FREEMEM(nasid)->offset
 #define FREEMEM_ADDR(nasid)	SYMMON_STK_END(nasid)
 /*
  * XXX
  * Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
  * Also, it should take into account what prom thinks to be a safe
  * address
 	PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
  */
 #define FREEMEM_SIZE(nasid)	KLD_FREEMEM(nasid)->size

 #define PI_ERROR_OFFSET(nasid)	KLD_PI_ERROR(nasid)->offset
 #define PI_ERROR_ADDR(nasid)						\
 	TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
 #define PI_ERROR_SIZE(nasid)	KLD_PI_ERROR(nasid)->size

 #define NODE_OFFSET_TO_K0(_nasid, _off)					\
 	PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) | CAC_BASE)
 #define NODE_OFFSET_TO_K1(_nasid, _off)					\
 	TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) | UNCAC_BASE)
 #define K0_TO_NODE_OFFSET(_k0addr)					\
 	((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)

 #define KERN_VARS_ADDR(nasid)	KLD_KERN_VARS(nasid)->pointer
 #define KERN_VARS_SIZE(nasid)	KLD_KERN_VARS(nasid)->size

 #define KERN_XP_ADDR(nasid)	KLD_KERN_XP(nasid)->pointer
 #define KERN_XP_SIZE(nasid)	KLD_KERN_XP(nasid)->size

 #define GPDA_ADDR(nasid)	TO_NODE_CAC(nasid, GPDA_OFFSET)

 #endif /* !__ASSEMBLY__ */


 #endif /* _ASM_SN_ADDRS_H */
	/*
	* This file is subject to the terms and conditions of the GNU General Public
	* License. See the file "COPYING" in the main directory of this archive
	* for more details.
	*
	* Copyright (C) 1992 - 1997, 1999, 2000 Silicon Graphics, Inc.
	* Copyright (C) 1999, 2000 by Ralf Baechle
	*/
	#ifndef _ASM_SN_ADDRS_H
	#define _ASM_SN_ADDRS_H


	#ifndef __ASSEMBLY__
	#include <linux/smp.h>
	#include <linux/types.h>
	#endif /* !__ASSEMBLY__ */

	#include <asm/addrspace.h>
	#include <asm/sn/kldir.h>

	#if defined(CONFIG_SGI_IP27)
	#include <asm/sn/sn0/addrs.h>
	#elif defined(CONFIG_SGI_IP35)
	#include <asm/sn/sn1/addrs.h>
	#endif


	#ifndef __ASSEMBLY__

	#define PS_UINT_CAST (unsigned long)
	#define UINT64_CAST (unsigned long)

	#define HUBREG_CAST (volatile hubreg_t *)

	#else /* __ASSEMBLY__ */

	#define PS_UINT_CAST
	#define UINT64_CAST
	#define HUBREG_CAST

	#endif /* __ASSEMBLY__ */


	#define NASID_GET_META(_n) ((_n) >> NASID_LOCAL_BITS)
	#ifdef CONFIG_SGI_IP27
	#define NASID_GET_LOCAL(_n) ((_n) & 0xf)
	#endif
	#define NASID_MAKE(_m, _l) (((_m) << NASID_LOCAL_BITS) \| (_l))

	#define NODE_ADDRSPACE_MASK (NODE_ADDRSPACE_SIZE - 1)
	#define TO_NODE_ADDRSPACE(_pa) (UINT64_CAST (_pa) & NODE_ADDRSPACE_MASK)

	#define CHANGE_ADDR_NASID(_pa, _nasid) \
	((UINT64_CAST(_pa) & ~NASID_MASK) \| \
	(UINT64_CAST(_nasid) << NASID_SHFT))


	/*
	* The following macros are used to index to the beginning of a specific
	* node's address space.
	*/

	#define NODE_OFFSET(_n) (UINT64_CAST (_n) << NODE_SIZE_BITS)

	#define NODE_CAC_BASE(_n) (CAC_BASE + NODE_OFFSET(_n))
	#define NODE_HSPEC_BASE(_n) (HSPEC_BASE + NODE_OFFSET(_n))
	#define NODE_IO_BASE(_n) (IO_BASE + NODE_OFFSET(_n))
	#define NODE_MSPEC_BASE(_n) (MSPEC_BASE + NODE_OFFSET(_n))
	#define NODE_UNCAC_BASE(_n) (UNCAC_BASE + NODE_OFFSET(_n))

	#define TO_NODE(_n, _x) (NODE_OFFSET(_n) \| ((_x) ))
	#define TO_NODE_CAC(_n, _x) (NODE_CAC_BASE(_n) \| ((_x) & TO_PHYS_MASK))
	#define TO_NODE_UNCAC(_n, _x) (NODE_UNCAC_BASE(_n) \| ((_x) & TO_PHYS_MASK))
	#define TO_NODE_MSPEC(_n, _x) (NODE_MSPEC_BASE(_n) \| ((_x) & TO_PHYS_MASK))
	#define TO_NODE_HSPEC(_n, _x) (NODE_HSPEC_BASE(_n) \| ((_x) & TO_PHYS_MASK))


	#define RAW_NODE_SWIN_BASE(nasid, widget) \
	(NODE_IO_BASE(nasid) + (UINT64_CAST(widget) << SWIN_SIZE_BITS))

	#define WIDGETID_GET(addr) ((unsigned char)((addr >> SWIN_SIZE_BITS) & 0xff))

	/*
	* The following definitions pertain to the IO special address
	* space. They define the location of the big and little windows
	* of any given node.
	*/

	#define SWIN_SIZE_BITS 24
	#define SWIN_SIZE (UINT64_CAST 1 << 24)
	#define SWIN_SIZEMASK (SWIN_SIZE - 1)
	#define SWIN_WIDGET_MASK 0xF

	/*
	* Convert smallwindow address to xtalk address.
	*
	* 'addr' can be physical or virtual address, but will be converted
	* to Xtalk address in the range 0 -> SWINZ_SIZEMASK
	*/
	#define SWIN_WIDGETADDR(addr) ((addr) & SWIN_SIZEMASK)
	#define SWIN_WIDGETNUM(addr) (((addr) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
	/*
	* Verify if addr belongs to small window address on node with "nasid"
	*
	*
	* NOTE: "addr" is expected to be XKPHYS address, and NOT physical
	* address
	*
	*
	*/
	#define NODE_SWIN_ADDR(nasid, addr) \
	(((addr) >= NODE_SWIN_BASE(nasid, 0)) && \
	((addr) < (NODE_SWIN_BASE(nasid, HUB_NUM_WIDGET) + SWIN_SIZE)\
	))

	/*
	* The following define the major position-independent aliases used
	* in SN.
	* UALIAS -- 256MB in size, reads in the UALIAS result in
	* uncached references to the memory of the reader's node.
	* CPU_UALIAS -- 128kb in size, the bottom part of UALIAS is flipped
	* depending on which CPU does the access to provide
	* all CPUs with unique uncached memory at low addresses.
	* LBOOT -- 256MB in size, reads in the LBOOT area result in
	* uncached references to the local hub's boot prom and
	* other directory-bus connected devices.
	* IALIAS -- 8MB in size, reads in the IALIAS result in uncached
	* references to the local hub's registers.
	*/

	#define UALIAS_BASE HSPEC_BASE
	#define UALIAS_SIZE 0x10000000 /* 256 Megabytes */
	#define UALIAS_LIMIT (UALIAS_BASE + UALIAS_SIZE)

	/*
	* The bottom of ualias space is flipped depending on whether you're
	* processor 0 or 1 within a node.
	*/
	#ifdef CONFIG_SGI_IP27
	#define UALIAS_FLIP_BASE UALIAS_BASE
	#define UALIAS_FLIP_SIZE 0x20000
	#define UALIAS_FLIP_BIT 0x10000
	#define UALIAS_FLIP_ADDR(_x) (cputoslice(smp_processor_id()) ? \
	(_x) ^ UALIAS_FLIP_BIT : (_x))

	#define LBOOT_BASE (HSPEC_BASE + 0x10000000)
	#define LBOOT_SIZE 0x10000000
	#define LBOOT_LIMIT (LBOOT_BASE + LBOOT_SIZE)
	#define LBOOT_STRIDE 0 /* IP27 has only one CPU PROM */

	#endif

	#define HUB_REGISTER_WIDGET 1
	#define IALIAS_BASE NODE_SWIN_BASE(0, HUB_REGISTER_WIDGET)
	#define IALIAS_SIZE 0x800000 /* 8 Megabytes */
	#define IS_IALIAS(_a) (((_a) >= IALIAS_BASE) && \
	((_a) < (IALIAS_BASE + IALIAS_SIZE)))

	/*
	* Macro for referring to Hub's RBOOT space
	*/

	#ifdef CONFIG_SGI_IP27
	#define RBOOT_SIZE 0x10000000 /* 256 Megabytes */
	#define NODE_RBOOT_BASE(_n) (NODE_HSPEC_BASE(_n) + 0x30000000)
	#define NODE_RBOOT_LIMIT(_n) (NODE_RBOOT_BASE(_n) + RBOOT_SIZE)

	#endif

	/*
	* Macros for referring the Hub's back door space
	*
	* These macros correctly process addresses in any node's space.
	* WARNING: They won't work in assembler.
	*
	* BDDIR_ENTRY_LO returns the address of the low double-word of the dir
	* entry corresponding to a physical (Cac or Uncac) address.
	* BDDIR_ENTRY_HI returns the address of the high double-word of the entry.
	* BDPRT_ENTRY returns the address of the double-word protection entry
	* corresponding to the page containing the physical address.
	* BDPRT_ENTRY_S Stores the value into the protection entry.
	* BDPRT_ENTRY_L Load the value from the protection entry.
	* BDECC_ENTRY returns the address of the ECC byte corresponding to a
	* double-word at a specified physical address.
	* BDECC_ENTRY_H returns the address of the two ECC bytes corresponding to a
	* quad-word at a specified physical address.
	*/
	#define NODE_BDOOR_BASE(_n) (NODE_HSPEC_BASE(_n) + (NODE_ADDRSPACE_SIZE/2))

	#define NODE_BDECC_BASE(_n) (NODE_BDOOR_BASE(_n))
	#define NODE_BDDIR_BASE(_n) (NODE_BDOOR_BASE(_n) + (NODE_ADDRSPACE_SIZE/4))
	#ifdef CONFIG_SGI_IP27
	#define BDDIR_ENTRY_LO(_pa) ((HSPEC_BASE + \
	NODE_ADDRSPACE_SIZE * 3 / 4 + \
	0x200) \| \
	UINT64_CAST(_pa) & NASID_MASK \| \
	UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK \| \
	UINT64_CAST(_pa) >> 3 & 0x1f << 4)

	#define BDDIR_ENTRY_HI(_pa) ((HSPEC_BASE + \
	NODE_ADDRSPACE_SIZE * 3 / 4 + \
	0x208) \| \
	UINT64_CAST(_pa) & NASID_MASK \| \
	UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK \| \
	UINT64_CAST(_pa) >> 3 & 0x1f << 4)

	#define BDPRT_ENTRY(_pa, _rgn) ((HSPEC_BASE + \
	NODE_ADDRSPACE_SIZE * 3 / 4) \| \
	UINT64_CAST(_pa) & NASID_MASK \| \
	UINT64_CAST(_pa) >> 2 & BDDIR_UPPER_MASK \| \
	(_rgn) << 3)
	#define BDPRT_ENTRY_ADDR(_pa, _rgn) (BDPRT_ENTRY((_pa), (_rgn)))
	#define BDPRT_ENTRY_S(_pa, _rgn, _val) ((__psunsigned_t )BDPRT_ENTRY((_pa), (_rgn))=(_val))
	#define BDPRT_ENTRY_L(_pa, _rgn) ((__psunsigned_t )BDPRT_ENTRY((_pa), (_rgn)))

	#define BDECC_ENTRY(_pa) ((HSPEC_BASE + \
	NODE_ADDRSPACE_SIZE / 2) \| \
	UINT64_CAST(_pa) & NASID_MASK \| \
	UINT64_CAST(_pa) >> 2 & BDECC_UPPER_MASK \| \
	UINT64_CAST(_pa) >> 3 & 3)

	/*
	* Macro to convert a back door directory or protection address into the
	* raw physical address of the associated cache line or protection page.
	*/
	#define BDADDR_IS_DIR(_ba) ((UINT64_CAST (_ba) & 0x200) != 0)
	#define BDADDR_IS_PRT(_ba) ((UINT64_CAST (_ba) & 0x200) == 0)

	#define BDDIR_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK \| \
	(UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2 \| \
	(UINT64_CAST(_ba) & 0x1f << 4) << 3)

	#define BDPRT_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK \| \
	(UINT64_CAST(_ba) & BDDIR_UPPER_MASK)<<2)

	#define BDECC_TO_MEM(_ba) (UINT64_CAST (_ba) & NASID_MASK \| \
	(UINT64_CAST(_ba) & BDECC_UPPER_MASK)<<2 \| \
	(UINT64_CAST(_ba) & 3) << 3)
	#endif /* CONFIG_SGI_IP27 */


	/*
	* The following macros produce the correct base virtual address for
	* the hub registers. The LOCAL_HUB_* macros produce the appropriate
	* address for the local registers. The REMOTE_HUB_* macro produce
	* the address for the specified hub's registers. The intent is
	* that the appropriate PI, MD, NI, or II register would be substituted
	* for _x.
	*/

	/*
	* WARNING:
	* When certain Hub chip workaround are defined, it's not sufficient
	* to dereference the *_HUB_ADDR() macros. You should instead use
	* HUB_L() and HUB_S() if you must deal with pointers to hub registers.
	* Otherwise, the recommended approach is to use _HUB_L() and _HUB_S().
	* They're always safe.
	*/
	#define LOCAL_HUB_ADDR(_x) (HUBREG_CAST (IALIAS_BASE + (_x)))
	#define REMOTE_HUB_ADDR(_n, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
	0x800000 + (_x)))
	#ifdef CONFIG_SGI_IP27
	#define REMOTE_HUB_PI_ADDR(_n, _sn, _x) (HUBREG_CAST (NODE_SWIN_BASE(_n, 1) + \
	0x800000 + (_x)))
	#endif /* CONFIG_SGI_IP27 */

	#ifndef __ASSEMBLY__

	#define HUB_L(_a) *(_a)
	#define HUB_S(_a, _d) *(_a) = (_d)

	#define LOCAL_HUB_L(_r) HUB_L(LOCAL_HUB_ADDR(_r))
	#define LOCAL_HUB_S(_r, _d) HUB_S(LOCAL_HUB_ADDR(_r), (_d))
	#define REMOTE_HUB_L(_n, _r) HUB_L(REMOTE_HUB_ADDR((_n), (_r)))
	#define REMOTE_HUB_S(_n, _r, _d) HUB_S(REMOTE_HUB_ADDR((_n), (_r)), (_d))
	#define REMOTE_HUB_PI_L(_n, _sn, _r) HUB_L(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)))
	#define REMOTE_HUB_PI_S(_n, _sn, _r, _d) HUB_S(REMOTE_HUB_PI_ADDR((_n), (_sn), (_r)), (_d))

	#endif /* !__ASSEMBLY__ */

	/*
	* The following macros are used to get to a hub/bridge register, given
	* the base of the register space.
	*/
	#define HUB_REG_PTR(_base, _off) \
	(HUBREG_CAST((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))

	#define HUB_REG_PTR_L(_base, _off) \
	HUB_L(HUB_REG_PTR((_base), (_off)))

	#define HUB_REG_PTR_S(_base, _off, _data) \
	HUB_S(HUB_REG_PTR((_base), (_off)), (_data))

	/*
	* Software structure locations -- permanently fixed
	* See diagram in kldir.h
	*/

	#define PHYS_RAMBASE 0x0
	#define K0_RAMBASE PHYS_TO_K0(PHYS_RAMBASE)

	#define EX_HANDLER_OFFSET(slice) ((slice) << 16)
	#define EX_HANDLER_ADDR(nasid, slice) \
	PHYS_TO_K0(NODE_OFFSET(nasid) \| EX_HANDLER_OFFSET(slice))
	#define EX_HANDLER_SIZE 0x0400

	#define EX_FRAME_OFFSET(slice) ((slice) << 16 \| 0x400)
	#define EX_FRAME_ADDR(nasid, slice) \
	PHYS_TO_K0(NODE_OFFSET(nasid) \| EX_FRAME_OFFSET(slice))
	#define EX_FRAME_SIZE 0x0c00

	#define ARCS_SPB_OFFSET 0x1000
	#define ARCS_SPB_ADDR(nasid) \
	PHYS_TO_K0(NODE_OFFSET(nasid) \| ARCS_SPB_OFFSET)
	#define ARCS_SPB_SIZE 0x0400

	#define KLDIR_OFFSET 0x2000
	#define KLDIR_ADDR(nasid) \
	TO_NODE_UNCAC((nasid), KLDIR_OFFSET)
	#define KLDIR_SIZE 0x0400


	/*
	* Software structure locations -- indirected through KLDIR
	* See diagram in kldir.h
	*
	* Important: All low memory structures must only be accessed
	* uncached, except for the symmon stacks.
	*/

	#define KLI_LAUNCH 0 /* Dir. entries */
	#define KLI_KLCONFIG 1
	#define KLI_NMI 2
	#define KLI_GDA 3
	#define KLI_FREEMEM 4
	#define KLI_SYMMON_STK 5
	#define KLI_PI_ERROR 6
	#define KLI_KERN_VARS 7
	#define KLI_KERN_XP 8
	#define KLI_KERN_PARTID 9

	#ifndef __ASSEMBLY__

	#define KLD_BASE(nasid) ((kldir_ent_t *) KLDIR_ADDR(nasid))
	#define KLD_LAUNCH(nasid) (KLD_BASE(nasid) + KLI_LAUNCH)
	#define KLD_NMI(nasid) (KLD_BASE(nasid) + KLI_NMI)
	#define KLD_KLCONFIG(nasid) (KLD_BASE(nasid) + KLI_KLCONFIG)
	#define KLD_PI_ERROR(nasid) (KLD_BASE(nasid) + KLI_PI_ERROR)
	#define KLD_GDA(nasid) (KLD_BASE(nasid) + KLI_GDA)
	#define KLD_SYMMON_STK(nasid) (KLD_BASE(nasid) + KLI_SYMMON_STK)
	#define KLD_FREEMEM(nasid) (KLD_BASE(nasid) + KLI_FREEMEM)
	#define KLD_KERN_VARS(nasid) (KLD_BASE(nasid) + KLI_KERN_VARS)
	#define KLD_KERN_XP(nasid) (KLD_BASE(nasid) + KLI_KERN_XP)
	#define KLD_KERN_PARTID(nasid) (KLD_BASE(nasid) + KLI_KERN_PARTID)

	#define LAUNCH_OFFSET(nasid, slice) \
	(KLD_LAUNCH(nasid)->offset + \
	KLD_LAUNCH(nasid)->stride * (slice))
	#define LAUNCH_ADDR(nasid, slice) \
	TO_NODE_UNCAC((nasid), LAUNCH_OFFSET(nasid, slice))
	#define LAUNCH_SIZE(nasid) KLD_LAUNCH(nasid)->size

	#define SN_NMI_OFFSET(nasid, slice) \
	(KLD_NMI(nasid)->offset + \
	KLD_NMI(nasid)->stride * (slice))
	#define NMI_ADDR(nasid, slice) \
	TO_NODE_UNCAC((nasid), SN_NMI_OFFSET(nasid, slice))
	#define NMI_SIZE(nasid) KLD_NMI(nasid)->size

	#define KLCONFIG_OFFSET(nasid) KLD_KLCONFIG(nasid)->offset
	#define KLCONFIG_ADDR(nasid) \
	TO_NODE_UNCAC((nasid), KLCONFIG_OFFSET(nasid))
	#define KLCONFIG_SIZE(nasid) KLD_KLCONFIG(nasid)->size

	#define GDA_ADDR(nasid) KLD_GDA(nasid)->pointer
	#define GDA_SIZE(nasid) KLD_GDA(nasid)->size

	#define SYMMON_STK_OFFSET(nasid, slice) \
	(KLD_SYMMON_STK(nasid)->offset + \
	KLD_SYMMON_STK(nasid)->stride * (slice))
	#define SYMMON_STK_STRIDE(nasid) KLD_SYMMON_STK(nasid)->stride

	#define SYMMON_STK_ADDR(nasid, slice) \
	TO_NODE_CAC((nasid), SYMMON_STK_OFFSET(nasid, slice))

	#define SYMMON_STK_SIZE(nasid) KLD_SYMMON_STK(nasid)->stride

	#define SYMMON_STK_END(nasid) (SYMMON_STK_ADDR(nasid, 0) + KLD_SYMMON_STK(nasid)->size)

	/* loading symmon 4k below UNIX. the arcs loader needs the topaddr for a
	* relocatable program
	*/
	#define UNIX_DEBUG_LOADADDR 0x300000
	#define SYMMON_LOADADDR(nasid) \
	TO_NODE(nasid, PHYS_TO_K0(UNIX_DEBUG_LOADADDR - 0x1000))

	#define FREEMEM_OFFSET(nasid) KLD_FREEMEM(nasid)->offset
	#define FREEMEM_ADDR(nasid) SYMMON_STK_END(nasid)
	/*
	* XXX
	* Fix this. FREEMEM_ADDR should be aware of if symmon is loaded.
	* Also, it should take into account what prom thinks to be a safe
	* address
	PHYS_TO_K0(NODE_OFFSET(nasid) + FREEMEM_OFFSET(nasid))
	*/
	#define FREEMEM_SIZE(nasid) KLD_FREEMEM(nasid)->size

	#define PI_ERROR_OFFSET(nasid) KLD_PI_ERROR(nasid)->offset
	#define PI_ERROR_ADDR(nasid) \
	TO_NODE_UNCAC((nasid), PI_ERROR_OFFSET(nasid))
	#define PI_ERROR_SIZE(nasid) KLD_PI_ERROR(nasid)->size

	#define NODE_OFFSET_TO_K0(_nasid, _off) \
	PHYS_TO_K0((NODE_OFFSET(_nasid) + (_off)) \| CAC_BASE)
	#define NODE_OFFSET_TO_K1(_nasid, _off) \
	TO_UNCAC((NODE_OFFSET(_nasid) + (_off)) \| UNCAC_BASE)
	#define K0_TO_NODE_OFFSET(_k0addr) \
	((__psunsigned_t)(_k0addr) & NODE_ADDRSPACE_MASK)

	#define KERN_VARS_ADDR(nasid) KLD_KERN_VARS(nasid)->pointer
	#define KERN_VARS_SIZE(nasid) KLD_KERN_VARS(nasid)->size

	#define KERN_XP_ADDR(nasid) KLD_KERN_XP(nasid)->pointer
	#define KERN_XP_SIZE(nasid) KLD_KERN_XP(nasid)->size

	#define GPDA_ADDR(nasid) TO_NODE_CAC(nasid, GPDA_OFFSET)

	#endif /* !__ASSEMBLY__ */


	#endif /* _ASM_SN_ADDRS_H */