/* $Id$
 *
 * 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, 2000-2002 Silicon Graphics, Inc. All rights reserved.
 */

#ifndef _ASM_IA64_SN_SN1_ADDRS_H
#define _ASM_IA64_SN_SN1_ADDRS_H

#include <linux/config.h>

#ifdef CONFIG_IA64_SGI_SN1
/*
 * SN1 (on a TRex) Address map
 *
 * This file contains a set of definitions and macros which are used
 * to reference into the major address spaces (CAC, HSPEC, IO, MSPEC,
 * and UNCAC) used by the SN1 architecture.  It also contains addresses
 * for "major" statically locatable PROM/Kernel data structures, such as
 * the partition table, the configuration data structure, etc.
 * We make an implicit assumption that the processor using this file
 * follows the R12K's provisions for specifying uncached attributes;
 * should this change, the base registers may very well become processor-
 * dependent.
 *
 * For more information on the address spaces, see the "Local Resources"
 * chapter of the Hub specification.
 *
 * NOTE: This header file is included both by C and by assembler source
 *	 files.  Please bracket any language-dependent definitions
 *	 appropriately.
 */


/*
 * Some of the macros here need to be casted to appropriate types when used
 * from C.  They definitely must not be casted from assembly language so we
 * use some new ANSI preprocessor stuff to paste these on where needed.
 */

#define CAC_BASE                0xe000000000000000
#define HSPEC_BASE              0xc0000b0000000000
#define HSPEC_SWIZ_BASE         0xc000030000000000
#define IO_BASE                 0xc0000a0000000000
#define IO_SWIZ_BASE            0xc000020000000000
#define MSPEC_BASE              0xc000090000000000
#define UNCAC_BASE              0xc000000000000000
#define TO_PHYS_MASK		0x000000ffffffffff

#define TO_PHYS(x)		(	      ((x) & TO_PHYS_MASK))
#define TO_CAC(x)		(CAC_BASE   | ((x) & TO_PHYS_MASK))
#define TO_UNCAC(x)		(UNCAC_BASE | ((x) & TO_PHYS_MASK))
#define TO_MSPEC(x)		(MSPEC_BASE | ((x) & TO_PHYS_MASK))
#define TO_HSPEC(x)		(HSPEC_BASE | ((x) & TO_PHYS_MASK))


/*
 * The following couple of definitions will eventually need to be variables,
 * since the amount of address space assigned to each node depends on
 * whether the system is running in N-mode (more nodes with less memory)
 * or M-mode (fewer nodes with more memory).  We expect that it will
 * be a while before we need to make this decision dynamically, though,
 * so for now we just use defines bracketed by an ifdef.
 */

#if defined(N_MODE)

#define NODE_SIZE_BITS		32
#define BWIN_SIZE_BITS		28

#define NASID_BITS		8
#define NASID_BITMASK		(0xffLL)
#define NASID_SHFT		32
#define NASID_META_BITS		1
#define NASID_LOCAL_BITS	7

#define BDDIR_UPPER_MASK	(UINT64_CAST 0x1ffffff << 4)
#define BDECC_UPPER_MASK	(UINT64_CAST 0x1fffffff )

#else /* !defined(N_MODE), assume that M-mode is desired */

#define NODE_SIZE_BITS		33
#define BWIN_SIZE_BITS		29

#define NASID_BITMASK		(0x7fLL)
#define NASID_BITS		7
#define NASID_SHFT		33
#define NASID_META_BITS		0
#define NASID_LOCAL_BITS	7

#define BDDIR_UPPER_MASK	(UINT64_CAST 0x3ffffff << 4)
#define BDECC_UPPER_MASK	(UINT64_CAST 0x3fffffff)

#endif /* defined(N_MODE) */

#define NODE_ADDRSPACE_SIZE	(UINT64_CAST 1 << NODE_SIZE_BITS)

#define NASID_MASK		(UINT64_CAST NASID_BITMASK << NASID_SHFT)
#define NASID_GET(_pa)		(int) ((UINT64_CAST (_pa) >>		\
					NASID_SHFT) & NASID_BITMASK)

#ifndef __ASSEMBLY__
#define NODE_SWIN_BASE(nasid, widget)					\
	((widget == 0) ? NODE_BWIN_BASE((nasid), SWIN0_BIGWIN)		\
	: RAW_NODE_SWIN_BASE(nasid, widget))
#else
#define NODE_SWIN_BASE(nasid, widget) \
     (NODE_IO_BASE(nasid) + (UINT64_CAST (widget) << SWIN_SIZE_BITS))
#endif /* __ASSEMBLY__ */

/*
 * 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_INDEX_BITS		3
#define BWIN_SIZE		(UINT64_CAST 1 << BWIN_SIZE_BITS)
#define	BWIN_SIZEMASK		(BWIN_SIZE - 1)
#define	BWIN_WIDGET_MASK	0x7
#define NODE_BWIN_BASE0(nasid)	(NODE_IO_BASE(nasid) + BWIN_SIZE)
#define NODE_BWIN_BASE(nasid, bigwin)	(NODE_BWIN_BASE0(nasid) + 	\
			(UINT64_CAST (bigwin) << BWIN_SIZE_BITS))

#define	BWIN_WIDGETADDR(addr)	((addr) & BWIN_SIZEMASK)
#define	BWIN_WINDOWNUM(addr)	(((addr) >> BWIN_SIZE_BITS) & BWIN_WIDGET_MASK)
/*
 * Verify if addr belongs to large window address of node with "nasid"
 *
 *
 * NOTE: "addr" is expected to be XKPHYS address, and NOT physical
 * address
 *
 *
 */

#define	NODE_BWIN_ADDR(nasid, addr)	\
		(((addr) >= NODE_BWIN_BASE0(nasid)) && \
		 ((addr) < (NODE_BWIN_BASE(nasid, HUB_NUM_BIG_WINDOW) + \
				BWIN_SIZE)))

/*
 * The following define the major position-independent aliases used
 * in SN1.
 *	CALIAS -- Varies in size, points to the first n bytes of memory
 *		  	on the reader's node.
 */

#define CALIAS_BASE		CAC_BASE



#define BRIDGE_REG_PTR(_base, _off)	((volatile bridgereg_t *) \
	((__psunsigned_t)(_base) + (__psunsigned_t)(_off)))

#define SN0_WIDGET_BASE(_nasid, _wid)	(NODE_SWIN_BASE((_nasid), (_wid)))



/*
 * needed by symmon so it needs to be outside #if PROM
 * (see also POD_ELSCSIZE)
 */
#define IP27PROM_ELSC_BASE_A	PHYS_TO_K0(0x020e0000)
#define IP27PROM_ELSC_BASE_B	PHYS_TO_K0(0x020e0800)
#define IP27PROM_ELSC_BASE_C	PHYS_TO_K0(0x020e1000)
#define IP27PROM_ELSC_BASE_D	PHYS_TO_K0(0x020e1800)
#define IP27PROM_ELSC_SHFT	11
#define IP27PROM_ELSC_SIZE	(1 << IP27PROM_ELSC_SHFT)

#define FREEMEM_BASE		PHYS_TO_K0(0x4000000)

#define IO6PROM_STACK_SHFT	14	/* stack per cpu */
#define IO6PROM_STACK_SIZE	(1 << IO6PROM_STACK_SHFT)


#define KL_UART_BASE	LOCAL_HSPEC(HSPEC_UART_0)	/* base of UART regs */
#define KL_UART_CMD	LOCAL_HSPEC(HSPEC_UART_0)	/* UART command reg */
#define KL_UART_DATA	LOCAL_HSPEC(HSPEC_UART_1)	/* UART data reg */

#if !__ASSEMBLY__
/* Address 0x400 to 0x1000 ualias points to cache error eframe + misc
 * CACHE_ERR_SP_PTR could either contain an address to the stack, or
 * the stack could start at CACHE_ERR_SP_PTR
 */
#define CACHE_ERR_EFRAME	0x400

#define CACHE_ERR_ECCFRAME	(CACHE_ERR_EFRAME + EF_SIZE)
#define CACHE_ERR_SP_PTR	(0x1000 - 32)	/* why -32? TBD */
#define CACHE_ERR_IBASE_PTR	(0x1000 - 40)
#define CACHE_ERR_SP		(CACHE_ERR_SP_PTR - 16)
#define CACHE_ERR_AREA_SIZE	(ARCS_SPB_OFFSET - CACHE_ERR_EFRAME)

#endif	/* !__ASSEMBLY__ */



#define _ARCSPROM

#ifdef _STANDALONE

/*
 * The PROM needs to pass the device base address and the
 * device pci cfg space address to the device drivers during
 * install. The COMPONENT->Key field is used for this purpose.
 * Macros needed by SN1 device drivers to convert the
 * COMPONENT->Key field to the respective base address.
 * Key field looks as follows:
 *
 *  +----------------------------------------------------+
 *  |devnasid | widget  |pciid |hubwidid|hstnasid | adap |
 *  |   2     |   1     |  1   |   1    |    2    |   1  |
 *  +----------------------------------------------------+
 *  |         |         |      |        |         |      |
 *  64        48        40     32       24        8      0
 *
 * These are used by standalone drivers till the io infrastructure
 * is in place.
 */

#ifndef __ASSEMBLY__

#define uchar unsigned char

#define KEY_DEVNASID_SHFT  48
#define KEY_WIDID_SHFT	   40
#define KEY_PCIID_SHFT	   32
#define KEY_HUBWID_SHFT	   24
#define KEY_HSTNASID_SHFT  8

#define MK_SN0_KEY(nasid, widid, pciid) \
			((((__psunsigned_t)nasid)<< KEY_DEVNASID_SHFT |\
				((__psunsigned_t)widid) << KEY_WIDID_SHFT) |\
				((__psunsigned_t)pciid) << KEY_PCIID_SHFT)

#define ADD_HUBWID_KEY(key,hubwid)\
			(key|=((__psunsigned_t)hubwid << KEY_HUBWID_SHFT))

#define ADD_HSTNASID_KEY(key,hstnasid)\
			(key|=((__psunsigned_t)hstnasid << KEY_HSTNASID_SHFT))

#define GET_DEVNASID_FROM_KEY(key)	((short)(key >> KEY_DEVNASID_SHFT))
#define GET_WIDID_FROM_KEY(key)		((uchar)(key >> KEY_WIDID_SHFT))
#define GET_PCIID_FROM_KEY(key)		((uchar)(key >> KEY_PCIID_SHFT))
#define GET_HUBWID_FROM_KEY(key)	((uchar)(key >> KEY_HUBWID_SHFT))
#define GET_HSTNASID_FROM_KEY(key)	((short)(key >> KEY_HSTNASID_SHFT))

#define PCI_64_TARGID_SHFT		60

#define GET_PCIBASE_FROM_KEY(key)  (NODE_SWIN_BASE(GET_DEVNASID_FROM_KEY(key),\
					GET_WIDID_FROM_KEY(key))\
					| BRIDGE_DEVIO(GET_PCIID_FROM_KEY(key)))

#define GET_PCICFGBASE_FROM_KEY(key) \
			(NODE_SWIN_BASE(GET_DEVNASID_FROM_KEY(key),\
			      GET_WIDID_FROM_KEY(key))\
			| BRIDGE_TYPE0_CFG_DEV(GET_PCIID_FROM_KEY(key)))

#define GET_WIDBASE_FROM_KEY(key) \
                        (NODE_SWIN_BASE(GET_DEVNASID_FROM_KEY(key),\
                              GET_WIDID_FROM_KEY(key)))

#define PUT_INSTALL_STATUS(c,s)		c->Revision = s
#define GET_INSTALL_STATUS(c)		c->Revision

#endif /* __ASSEMBLY__ */

#endif /* _STANDALONE */
#endif /* CONFIG_IA64_SGI_SN1 */

#endif /* _ASM_IA64_SN_SN1_ADDRS_H */
