arch/ia64/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) 1992-1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
  */

 #ifndef _ASM_IA64_SN_ADDRS_H
 #define _ASM_IA64_SN_ADDRS_H

 #include <asm/percpu.h>
 #include <asm/sn/types.h>
 #include <asm/sn/arch.h>
 #include <asm/sn/pda.h>

 /*
  *  Memory/SHUB Address Format:
  *  +-+---------+--+--------------+
  *  |0|  NASID  |AS| NodeOffset   |
  *  +-+---------+--+--------------+
  *
  *  NASID: (low NASID bit is 0) Memory and SHUB MMRs
  *   AS: 2-bit Address Space Identifier. Used only if low NASID bit is 0
  *     00: Local Resources and MMR space
  *           Top bit of NodeOffset
  *               0: Local resources space
  *                  node id:
  *                        0: IA64/NT compatibility space
  *                        2: Local MMR Space
  *                        4: Local memory, regardless of local node id
  *               1: Global MMR space
  *     01: GET space.
  *     10: AMO space.
  *     11: Cacheable memory space.
  *
  *   NodeOffset: byte offset
  *
  *
  *  TIO address format:
  *  +-+----------+--+--------------+
  *  |0|  NASID   |AS| Nodeoffset   |
  *  +-+----------+--+--------------+
  *
  *  NASID: (low NASID bit is 1) TIO
  *   AS: 2-bit Chiplet Identifier
  *     00: TIO LB (Indicates TIO MMR access.)
  *     01: TIO ICE (indicates coretalk space access.)
  *
  *   NodeOffset: top bit must be set.
  *
  *
  * Note that in both of the above address formats, the low
  * NASID bit indicates if the reference is to the SHUB or TIO MMRs.
  */


 /*
  * Define basic shift & mask constants for manipulating NASIDs and AS values.
  */
 #define NASID_BITMASK		(sn_hub_info->nasid_bitmask)
 #define NASID_SHIFT		(sn_hub_info->nasid_shift)
 #define AS_SHIFT		(sn_hub_info->as_shift)
 #define AS_BITMASK		0x3UL

 #define NASID_MASK              ((u64)NASID_BITMASK << NASID_SHIFT)
 #define AS_MASK			((u64)AS_BITMASK << AS_SHIFT)


 /*
  * AS values. These are the same on both SHUB1 & SHUB2.
  */
 #define AS_GET_VAL		1UL
 #define AS_AMO_VAL		2UL
 #define AS_CAC_VAL		3UL
 #define AS_GET_SPACE		(AS_GET_VAL << AS_SHIFT)
 #define AS_AMO_SPACE		(AS_AMO_VAL << AS_SHIFT)
 #define AS_CAC_SPACE		(AS_CAC_VAL << AS_SHIFT)


 /*
  * Virtual Mode Local & Global MMR space.
  */
 #define SH1_LOCAL_MMR_OFFSET	0x8000000000UL
 #define SH2_LOCAL_MMR_OFFSET	0x0200000000UL
 #define LOCAL_MMR_OFFSET	(is_shub2() ? SH2_LOCAL_MMR_OFFSET : SH1_LOCAL_MMR_OFFSET)
 #define LOCAL_MMR_SPACE		(__IA64_UNCACHED_OFFSET | LOCAL_MMR_OFFSET)
 #define LOCAL_PHYS_MMR_SPACE	(RGN_BASE(RGN_HPAGE) | LOCAL_MMR_OFFSET)

 #define SH1_GLOBAL_MMR_OFFSET	0x0800000000UL
 #define SH2_GLOBAL_MMR_OFFSET	0x0300000000UL
 #define GLOBAL_MMR_OFFSET	(is_shub2() ? SH2_GLOBAL_MMR_OFFSET : SH1_GLOBAL_MMR_OFFSET)
 #define GLOBAL_MMR_SPACE	(__IA64_UNCACHED_OFFSET | GLOBAL_MMR_OFFSET)

 /*
  * Physical mode addresses
  */
 #define GLOBAL_PHYS_MMR_SPACE	(RGN_BASE(RGN_HPAGE) | GLOBAL_MMR_OFFSET)


 /*
  * Clear region & AS bits.
  */
 #define TO_PHYS_MASK		(~(RGN_BITS | AS_MASK))


 /*
  * Misc NASID manipulation.
  */
 #define NASID_SPACE(n)		((u64)(n) << NASID_SHIFT)
 #define REMOTE_ADDR(n,a)	(NASID_SPACE(n) | (a))
 #define NODE_OFFSET(x)		((x) & (NODE_ADDRSPACE_SIZE - 1))
 #define NODE_ADDRSPACE_SIZE     (1UL << AS_SHIFT)
 #define NASID_GET(x)		(int) (((u64) (x) >> NASID_SHIFT) & NASID_BITMASK)
 #define LOCAL_MMR_ADDR(a)	(LOCAL_MMR_SPACE | (a))
 #define GLOBAL_MMR_ADDR(n,a)	(GLOBAL_MMR_SPACE | REMOTE_ADDR(n,a))
 #define GLOBAL_MMR_PHYS_ADDR(n,a) (GLOBAL_PHYS_MMR_SPACE | REMOTE_ADDR(n,a))
 #define GLOBAL_CAC_ADDR(n,a)	(CAC_BASE | REMOTE_ADDR(n,a))
 #define CHANGE_NASID(n,x)	((void *)(((u64)(x) & ~NASID_MASK) | NASID_SPACE(n)))
 #define IS_TIO_NASID(n)		((n) & 1)


 /* non-II mmr's start at top of big window space (4G) */
 #define BWIN_TOP		0x0000000100000000UL

 /*
  * general address defines
  */
 #define CAC_BASE		(PAGE_OFFSET | AS_CAC_SPACE)
 #define AMO_BASE		(__IA64_UNCACHED_OFFSET | AS_AMO_SPACE)
 #define AMO_PHYS_BASE		(RGN_BASE(RGN_HPAGE) | AS_AMO_SPACE)
 #define GET_BASE		(PAGE_OFFSET | AS_GET_SPACE)

 /*
  * Convert Memory addresses between various addressing modes.
  */
 #define TO_PHYS(x)		(TO_PHYS_MASK & (x))
 #define TO_CAC(x)		(CAC_BASE     | TO_PHYS(x))
 #ifdef CONFIG_SGI_SN
 #define TO_AMO(x)		(AMO_BASE     | TO_PHYS(x))
 #define TO_GET(x)		(GET_BASE     | TO_PHYS(x))
 #else
 #define TO_AMO(x)		({ BUG(); x; })
 #define TO_GET(x)		({ BUG(); x; })
 #endif

 /*
  * Covert from processor physical address to II/TIO physical address:
  *	II - squeeze out the AS bits
  *	TIO- requires a chiplet id in bits 38-39.  For DMA to memory,
  *           the chiplet id is zero.  If we implement TIO-TIO dma, we might need
  *           to insert a chiplet id into this macro.  However, it is our belief
  *           right now that this chiplet id will be ICE, which is also zero.
  */
 #define SH1_TIO_PHYS_TO_DMA(x) 						\
 	((((u64)(NASID_GET(x))) << 40) | NODE_OFFSET(x))

 #define SH2_NETWORK_BANK_OFFSET(x) 					\
         ((u64)(x) & ((1UL << (sn_hub_info->nasid_shift - 4)) -1))

 #define SH2_NETWORK_BANK_SELECT(x) 					\
         ((((u64)(x) & (0x3UL << (sn_hub_info->nasid_shift - 4)))	\
         	>> (sn_hub_info->nasid_shift - 4)) << 36)

 #define SH2_NETWORK_ADDRESS(x) 						\
 	(SH2_NETWORK_BANK_OFFSET(x) | SH2_NETWORK_BANK_SELECT(x))

 #define SH2_TIO_PHYS_TO_DMA(x) 						\
         (((u64)(NASID_GET(x)) << 40) | 	SH2_NETWORK_ADDRESS(x))

 #define PHYS_TO_TIODMA(x)						\
 	(is_shub1() ? SH1_TIO_PHYS_TO_DMA(x) : SH2_TIO_PHYS_TO_DMA(x))

 #define PHYS_TO_DMA(x)							\
 	((((u64)(x) & NASID_MASK) >> 2) | NODE_OFFSET(x))


 /*
  * Macros to test for address type.
  */
 #define IS_AMO_ADDRESS(x)	(((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_BASE)
 #define IS_AMO_PHYS_ADDRESS(x)	(((u64)(x) & (RGN_BITS | AS_MASK)) == AMO_PHYS_BASE)


 /*
  * 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 BWIN_SIZE_BITS			29	/* big window size: 512M */
 #define TIO_BWIN_SIZE_BITS		30	/* big window size: 1G */
 #define NODE_SWIN_BASE(n, w)		((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
 		: RAW_NODE_SWIN_BASE(n, w))
 #define TIO_SWIN_BASE(n, w) 		(TIO_IO_BASE(n) + \
 					    ((u64) (w) << TIO_SWIN_SIZE_BITS))
 #define NODE_IO_BASE(n)			(GLOBAL_MMR_SPACE | NASID_SPACE(n))
 #define TIO_IO_BASE(n)                  (__IA64_UNCACHED_OFFSET | NASID_SPACE(n))
 #define BWIN_SIZE			(1UL << BWIN_SIZE_BITS)
 #define NODE_BWIN_BASE0(n)		(NODE_IO_BASE(n) + BWIN_SIZE)
 #define NODE_BWIN_BASE(n, w)		(NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
 #define RAW_NODE_SWIN_BASE(n, w)	(NODE_IO_BASE(n) + ((u64) (w) << SWIN_SIZE_BITS))
 #define BWIN_WIDGET_MASK		0x7
 #define BWIN_WINDOWNUM(x)		(((x) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
 #define SH1_IS_BIG_WINDOW_ADDR(x)	((x) & BWIN_TOP)

 #define TIO_BWIN_WINDOW_SELECT_MASK	0x7
 #define TIO_BWIN_WINDOWNUM(x)		(((x) >> TIO_BWIN_SIZE_BITS) & TIO_BWIN_WINDOW_SELECT_MASK)

 #define TIO_HWIN_SHIFT_BITS		33
 #define TIO_HWIN(x)			(NODE_OFFSET(x) >> TIO_HWIN_SHIFT_BITS)

 /*
  * 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_WIDGET_MASK		0xF

 #define TIO_SWIN_SIZE_BITS		28
 #define TIO_SWIN_SIZE			(1UL << TIO_SWIN_SIZE_BITS)
 #define TIO_SWIN_WIDGET_MASK		0x3

 /*
  * 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_WIDGETNUM(x)		(((x)  >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
 #define TIO_SWIN_WIDGETNUM(x)		(((x)  >> TIO_SWIN_SIZE_BITS) & TIO_SWIN_WIDGET_MASK)


 /*
  * The following macros produce the correct base virtual address for
  * the hub 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.
  */
 /* Shub1 TIO & MMR addressing macros */
 #define SH1_TIO_IOSPACE_ADDR(n,x)					\
 	GLOBAL_MMR_ADDR(n,x)

 #define SH1_REMOTE_BWIN_MMR(n,x)					\
 	GLOBAL_MMR_ADDR(n,x)

 #define SH1_REMOTE_SWIN_MMR(n,x)					\
 	(NODE_SWIN_BASE(n,1) + 0x800000UL + (x))

 #define SH1_REMOTE_MMR(n,x)						\
 	(SH1_IS_BIG_WINDOW_ADDR(x) ? SH1_REMOTE_BWIN_MMR(n,x) :		\
 	 	SH1_REMOTE_SWIN_MMR(n,x))

 /* Shub1 TIO & MMR addressing macros */
 #define SH2_TIO_IOSPACE_ADDR(n,x)					\
 	((__IA64_UNCACHED_OFFSET | REMOTE_ADDR(n,x) | 1UL << (NASID_SHIFT - 2)))

 #define SH2_REMOTE_MMR(n,x)						\
 	GLOBAL_MMR_ADDR(n,x)


 /* TIO & MMR addressing macros that work on both shub1 & shub2 */
 #define TIO_IOSPACE_ADDR(n,x)						\
 	((u64 *)(is_shub1() ? SH1_TIO_IOSPACE_ADDR(n,x) :		\
 		 SH2_TIO_IOSPACE_ADDR(n,x)))

 #define SH_REMOTE_MMR(n,x)						\
 	(is_shub1() ? SH1_REMOTE_MMR(n,x) : SH2_REMOTE_MMR(n,x))

 #define REMOTE_HUB_ADDR(n,x)						\
 	(IS_TIO_NASID(n) ?  ((volatile u64*)TIO_IOSPACE_ADDR(n,x)) :	\
 	 ((volatile u64*)SH_REMOTE_MMR(n,x)))


 #define HUB_L(x)			(*((volatile typeof(*x) *)x))
 #define	HUB_S(x,d)			(*((volatile typeof(*x) *)x) = (d))

 #define REMOTE_HUB_L(n, a)		HUB_L(REMOTE_HUB_ADDR((n), (a)))
 #define REMOTE_HUB_S(n, a, d)		HUB_S(REMOTE_HUB_ADDR((n), (a)), (d))

 /*
  * Coretalk address breakdown
  */
 #define CTALK_NASID_SHFT		40
 #define CTALK_NASID_MASK		(0x3FFFULL << CTALK_NASID_SHFT)
 #define CTALK_CID_SHFT			38
 #define CTALK_CID_MASK			(0x3ULL << CTALK_CID_SHFT)
 #define CTALK_NODE_OFFSET		0x3FFFFFFFFF

 #endif /* _ASM_IA64_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) 1992-1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
	*/

	#ifndef _ASM_IA64_SN_ADDRS_H
	#define _ASM_IA64_SN_ADDRS_H

	#include <asm/percpu.h>
	#include <asm/sn/types.h>
	#include <asm/sn/arch.h>
	#include <asm/sn/pda.h>

	/*
	* Memory/SHUB Address Format:
	* +-+---------+--+--------------+
	* \|0\| NASID \|AS\| NodeOffset \|
	* +-+---------+--+--------------+
	*
	* NASID: (low NASID bit is 0) Memory and SHUB MMRs
	* AS: 2-bit Address Space Identifier. Used only if low NASID bit is 0
	* 00: Local Resources and MMR space
	* Top bit of NodeOffset
	* 0: Local resources space
	* node id:
	* 0: IA64/NT compatibility space
	* 2: Local MMR Space
	* 4: Local memory, regardless of local node id
	* 1: Global MMR space
	* 01: GET space.
	* 10: AMO space.
	* 11: Cacheable memory space.
	*
	* NodeOffset: byte offset
	*
	*
	* TIO address format:
	* +-+----------+--+--------------+
	* \|0\| NASID \|AS\| Nodeoffset \|
	* +-+----------+--+--------------+
	*
	* NASID: (low NASID bit is 1) TIO
	* AS: 2-bit Chiplet Identifier
	* 00: TIO LB (Indicates TIO MMR access.)
	* 01: TIO ICE (indicates coretalk space access.)
	*
	* NodeOffset: top bit must be set.
	*
	*
	* Note that in both of the above address formats, the low
	* NASID bit indicates if the reference is to the SHUB or TIO MMRs.
	*/


	/*
	* Define basic shift & mask constants for manipulating NASIDs and AS values.
	*/
	#define NASID_BITMASK (sn_hub_info->nasid_bitmask)
	#define NASID_SHIFT (sn_hub_info->nasid_shift)
	#define AS_SHIFT (sn_hub_info->as_shift)
	#define AS_BITMASK 0x3UL

	#define NASID_MASK ((u64)NASID_BITMASK << NASID_SHIFT)
	#define AS_MASK ((u64)AS_BITMASK << AS_SHIFT)


	/*
	* AS values. These are the same on both SHUB1 & SHUB2.
	*/
	#define AS_GET_VAL 1UL
	#define AS_AMO_VAL 2UL
	#define AS_CAC_VAL 3UL
	#define AS_GET_SPACE (AS_GET_VAL << AS_SHIFT)
	#define AS_AMO_SPACE (AS_AMO_VAL << AS_SHIFT)
	#define AS_CAC_SPACE (AS_CAC_VAL << AS_SHIFT)


	/*
	* Virtual Mode Local & Global MMR space.
	*/
	#define SH1_LOCAL_MMR_OFFSET 0x8000000000UL
	#define SH2_LOCAL_MMR_OFFSET 0x0200000000UL
	#define LOCAL_MMR_OFFSET (is_shub2() ? SH2_LOCAL_MMR_OFFSET : SH1_LOCAL_MMR_OFFSET)
	#define LOCAL_MMR_SPACE (__IA64_UNCACHED_OFFSET \| LOCAL_MMR_OFFSET)
	#define LOCAL_PHYS_MMR_SPACE (RGN_BASE(RGN_HPAGE) \| LOCAL_MMR_OFFSET)

	#define SH1_GLOBAL_MMR_OFFSET 0x0800000000UL
	#define SH2_GLOBAL_MMR_OFFSET 0x0300000000UL
	#define GLOBAL_MMR_OFFSET (is_shub2() ? SH2_GLOBAL_MMR_OFFSET : SH1_GLOBAL_MMR_OFFSET)
	#define GLOBAL_MMR_SPACE (__IA64_UNCACHED_OFFSET \| GLOBAL_MMR_OFFSET)

	/*
	* Physical mode addresses
	*/
	#define GLOBAL_PHYS_MMR_SPACE (RGN_BASE(RGN_HPAGE) \| GLOBAL_MMR_OFFSET)


	/*
	* Clear region & AS bits.
	*/
	#define TO_PHYS_MASK (~(RGN_BITS \| AS_MASK))


	/*
	* Misc NASID manipulation.
	*/
	#define NASID_SPACE(n) ((u64)(n) << NASID_SHIFT)
	#define REMOTE_ADDR(n,a) (NASID_SPACE(n) \| (a))
	#define NODE_OFFSET(x) ((x) & (NODE_ADDRSPACE_SIZE - 1))
	#define NODE_ADDRSPACE_SIZE (1UL << AS_SHIFT)
	#define NASID_GET(x) (int) (((u64) (x) >> NASID_SHIFT) & NASID_BITMASK)
	#define LOCAL_MMR_ADDR(a) (LOCAL_MMR_SPACE \| (a))
	#define GLOBAL_MMR_ADDR(n,a) (GLOBAL_MMR_SPACE \| REMOTE_ADDR(n,a))
	#define GLOBAL_MMR_PHYS_ADDR(n,a) (GLOBAL_PHYS_MMR_SPACE \| REMOTE_ADDR(n,a))
	#define GLOBAL_CAC_ADDR(n,a) (CAC_BASE \| REMOTE_ADDR(n,a))
	#define CHANGE_NASID(n,x) ((void *)(((u64)(x) & ~NASID_MASK) \| NASID_SPACE(n)))
	#define IS_TIO_NASID(n) ((n) & 1)


	/* non-II mmr's start at top of big window space (4G) */
	#define BWIN_TOP 0x0000000100000000UL

	/*
	* general address defines
	*/
	#define CAC_BASE (PAGE_OFFSET \| AS_CAC_SPACE)
	#define AMO_BASE (__IA64_UNCACHED_OFFSET \| AS_AMO_SPACE)
	#define AMO_PHYS_BASE (RGN_BASE(RGN_HPAGE) \| AS_AMO_SPACE)
	#define GET_BASE (PAGE_OFFSET \| AS_GET_SPACE)

	/*
	* Convert Memory addresses between various addressing modes.
	*/
	#define TO_PHYS(x) (TO_PHYS_MASK & (x))
	#define TO_CAC(x) (CAC_BASE \| TO_PHYS(x))
	#ifdef CONFIG_SGI_SN
	#define TO_AMO(x) (AMO_BASE \| TO_PHYS(x))
	#define TO_GET(x) (GET_BASE \| TO_PHYS(x))
	#else
	#define TO_AMO(x) ({ BUG(); x; })
	#define TO_GET(x) ({ BUG(); x; })
	#endif

	/*
	* Covert from processor physical address to II/TIO physical address:
	* II - squeeze out the AS bits
	* TIO- requires a chiplet id in bits 38-39. For DMA to memory,
	* the chiplet id is zero. If we implement TIO-TIO dma, we might need
	* to insert a chiplet id into this macro. However, it is our belief
	* right now that this chiplet id will be ICE, which is also zero.
	*/
	#define SH1_TIO_PHYS_TO_DMA(x) \
	((((u64)(NASID_GET(x))) << 40) \| NODE_OFFSET(x))

	#define SH2_NETWORK_BANK_OFFSET(x) \
	((u64)(x) & ((1UL << (sn_hub_info->nasid_shift - 4)) -1))

	#define SH2_NETWORK_BANK_SELECT(x) \
	((((u64)(x) & (0x3UL << (sn_hub_info->nasid_shift - 4))) \
	>> (sn_hub_info->nasid_shift - 4)) << 36)

	#define SH2_NETWORK_ADDRESS(x) \
	(SH2_NETWORK_BANK_OFFSET(x) \| SH2_NETWORK_BANK_SELECT(x))

	#define SH2_TIO_PHYS_TO_DMA(x) \
	(((u64)(NASID_GET(x)) << 40) \| SH2_NETWORK_ADDRESS(x))

	#define PHYS_TO_TIODMA(x) \
	(is_shub1() ? SH1_TIO_PHYS_TO_DMA(x) : SH2_TIO_PHYS_TO_DMA(x))

	#define PHYS_TO_DMA(x) \
	((((u64)(x) & NASID_MASK) >> 2) \| NODE_OFFSET(x))


	/*
	* Macros to test for address type.
	*/
	#define IS_AMO_ADDRESS(x) (((u64)(x) & (RGN_BITS \| AS_MASK)) == AMO_BASE)
	#define IS_AMO_PHYS_ADDRESS(x) (((u64)(x) & (RGN_BITS \| AS_MASK)) == AMO_PHYS_BASE)


	/*
	* 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 BWIN_SIZE_BITS 29 /* big window size: 512M */
	#define TIO_BWIN_SIZE_BITS 30 /* big window size: 1G */
	#define NODE_SWIN_BASE(n, w) ((w == 0) ? NODE_BWIN_BASE((n), SWIN0_BIGWIN) \
	: RAW_NODE_SWIN_BASE(n, w))
	#define TIO_SWIN_BASE(n, w) (TIO_IO_BASE(n) + \
	((u64) (w) << TIO_SWIN_SIZE_BITS))
	#define NODE_IO_BASE(n) (GLOBAL_MMR_SPACE \| NASID_SPACE(n))
	#define TIO_IO_BASE(n) (__IA64_UNCACHED_OFFSET \| NASID_SPACE(n))
	#define BWIN_SIZE (1UL << BWIN_SIZE_BITS)
	#define NODE_BWIN_BASE0(n) (NODE_IO_BASE(n) + BWIN_SIZE)
	#define NODE_BWIN_BASE(n, w) (NODE_BWIN_BASE0(n) + ((u64) (w) << BWIN_SIZE_BITS))
	#define RAW_NODE_SWIN_BASE(n, w) (NODE_IO_BASE(n) + ((u64) (w) << SWIN_SIZE_BITS))
	#define BWIN_WIDGET_MASK 0x7
	#define BWIN_WINDOWNUM(x) (((x) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
	#define SH1_IS_BIG_WINDOW_ADDR(x) ((x) & BWIN_TOP)

	#define TIO_BWIN_WINDOW_SELECT_MASK 0x7
	#define TIO_BWIN_WINDOWNUM(x) (((x) >> TIO_BWIN_SIZE_BITS) & TIO_BWIN_WINDOW_SELECT_MASK)

	#define TIO_HWIN_SHIFT_BITS 33
	#define TIO_HWIN(x) (NODE_OFFSET(x) >> TIO_HWIN_SHIFT_BITS)

	/*
	* 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_WIDGET_MASK 0xF

	#define TIO_SWIN_SIZE_BITS 28
	#define TIO_SWIN_SIZE (1UL << TIO_SWIN_SIZE_BITS)
	#define TIO_SWIN_WIDGET_MASK 0x3

	/*
	* 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_WIDGETNUM(x) (((x) >> SWIN_SIZE_BITS) & SWIN_WIDGET_MASK)
	#define TIO_SWIN_WIDGETNUM(x) (((x) >> TIO_SWIN_SIZE_BITS) & TIO_SWIN_WIDGET_MASK)


	/*
	* The following macros produce the correct base virtual address for
	* the hub 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.
	*/
	/* Shub1 TIO & MMR addressing macros */
	#define SH1_TIO_IOSPACE_ADDR(n,x) \
	GLOBAL_MMR_ADDR(n,x)

	#define SH1_REMOTE_BWIN_MMR(n,x) \
	GLOBAL_MMR_ADDR(n,x)

	#define SH1_REMOTE_SWIN_MMR(n,x) \
	(NODE_SWIN_BASE(n,1) + 0x800000UL + (x))

	#define SH1_REMOTE_MMR(n,x) \
	(SH1_IS_BIG_WINDOW_ADDR(x) ? SH1_REMOTE_BWIN_MMR(n,x) : \
	SH1_REMOTE_SWIN_MMR(n,x))

	/* Shub1 TIO & MMR addressing macros */
	#define SH2_TIO_IOSPACE_ADDR(n,x) \
	((__IA64_UNCACHED_OFFSET \| REMOTE_ADDR(n,x) \| 1UL << (NASID_SHIFT - 2)))

	#define SH2_REMOTE_MMR(n,x) \
	GLOBAL_MMR_ADDR(n,x)


	/* TIO & MMR addressing macros that work on both shub1 & shub2 */
	#define TIO_IOSPACE_ADDR(n,x) \
	((u64 *)(is_shub1() ? SH1_TIO_IOSPACE_ADDR(n,x) : \
	SH2_TIO_IOSPACE_ADDR(n,x)))

	#define SH_REMOTE_MMR(n,x) \
	(is_shub1() ? SH1_REMOTE_MMR(n,x) : SH2_REMOTE_MMR(n,x))

	#define REMOTE_HUB_ADDR(n,x) \
	(IS_TIO_NASID(n) ? ((volatile u64*)TIO_IOSPACE_ADDR(n,x)) : \
	((volatile u64*)SH_REMOTE_MMR(n,x)))


	#define HUB_L(x) (((volatile typeof(x) *)x))
	#define HUB_S(x,d) (((volatile typeof(x) *)x) = (d))

	#define REMOTE_HUB_L(n, a) HUB_L(REMOTE_HUB_ADDR((n), (a)))
	#define REMOTE_HUB_S(n, a, d) HUB_S(REMOTE_HUB_ADDR((n), (a)), (d))

	/*
	* Coretalk address breakdown
	*/
	#define CTALK_NASID_SHFT 40
	#define CTALK_NASID_MASK (0x3FFFULL << CTALK_NASID_SHFT)
	#define CTALK_CID_SHFT 38
	#define CTALK_CID_MASK (0x3ULL << CTALK_CID_SHFT)
	#define CTALK_NODE_OFFSET 0x3FFFFFFFFF

	#endif /* _ASM_IA64_SN_ADDRS_H */