addrs.h

ARM S3C2410 linux2.4 内核源码

/* $Id$
 *
 * 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, 1999 Silicon Graphics, Inc.
 * Copyright (C) 1999 by Ralf Baechle
 */
#ifndef _ASM_SN_ADDRS_H
#define _ASM_SN_ADDRS_H

#include <linux/config.h>

#if _LANGUAGE_C
#include <linux/types.h>
#endif /* _LANGUAGE_C */

#if !defined(CONFIG_IA64_SGI_SN1) && !defined(CONFIG_IA64_GENERIC)
#include <asm/addrspace.h>
#include <asm/reg.h>
#include <asm/sn/kldir.h>
#endif	/* CONFIG_IA64_SGI_SN1 */

#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
#include <asm/sn/sn1/addrs.h>
#endif


#if _LANGUAGE_C

#define PS_UINT_CAST		(__psunsigned_t)
#define UINT64_CAST		(uint64_t)

#define HUBREG_CAST		(volatile hubreg_t *)

#elif _LANGUAGE_ASSEMBLY

#define PS_UINT_CAST
#define UINT64_CAST
#define HUBREG_CAST

#endif


#define NASID_GET_META(_n)	((_n) >> NASID_LOCAL_BITS)
#if defined CONFIG_SGI_IP35 || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
#define NASID_GET_LOCAL(_n)	((_n) & 0x7f)
#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 CPU_UALIAS		0x20000		/* 128 Kilobytes */
#define UALIAS_CPU_SIZE		(CPU_UALIAS / CPUS_PER_NODE)
#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.
 */
#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
#define LREG_BASE		(HSPEC_BASE + 0x10000000)
#define LREG_SIZE		0x8000000  /* 128 MB */
#define LREG_LIMIT		(LREG_BASE + LREG_SIZE)
#define LBOOT_BASE		(LREG_LIMIT)
#define LBOOT_SIZE		0x8000000   /* 128 MB */
#define LBOOT_LIMIT		(LBOOT_BASE + LBOOT_SIZE)
#define LBOOT_STRIDE		0x2000000    /* two PROMs, on 32M boundaries */
#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
 */

#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)

#define NODE_LREG_BASE(_n)	(NODE_HSPEC_BASE(_n) + 0x30000000)
#define NODE_LREG_LIMIT(_n)	(NODE_LREG_BASE(_n) + LREG_SIZE)
#define RREG_BASE(_n)		(NODE_LREG_BASE(_n))
#define RREG_LIMIT(_n)		(NODE_LREG_LIMIT(_n))
#define RBOOT_SIZE		0x8000000	/* 128 Megabytes */
#define NODE_RBOOT_BASE(_n)	(NODE_HSPEC_BASE(_n) + 0x38000000)
#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))
#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
/*
 * Bedrock's directory entries are a single word:  no low/high
 */

#define BDDIR_ENTRY(_pa)	(HSPEC_BASE +				      \
				  NODE_ADDRSPACE_SIZE * 7 / 8  		    | \
				 UINT64_CAST (_pa)	& NASID_MASK	    | \
				 UINT64_CAST (_pa) >> 3 & BDDIR_UPPER_MASK)

#ifdef BRINGUP
        /* minimize source changes by mapping *_LO() & *_HI()   */
#define BDDIR_ENTRY_LO(_pa)     BDDIR_ENTRY(_pa)
#define BDDIR_ENTRY_HI(_pa)     BDDIR_ENTRY(_pa)
#endif /* BRINGUP */

#define BDDIR_PAGE_MASK		(BDDIR_UPPER_MASK & 0x7ffff << 11)
#define BDDIR_PAGE_BASE_MASK	(UINT64_CAST 0xfffffffffffff800)

#ifdef _LANGUAGE_C

#define BDPRT_ENTRY_ADDR(_pa, _rgn)      ((uint64_t *) ( (HSPEC_BASE +       \
                                 NODE_ADDRSPACE_SIZE * 7 / 8 + 0x408)       | \
                                (UINT64_CAST (_pa)      & NASID_MASK)        | \
                                (UINT64_CAST (_pa) >> 3 & BDDIR_PAGE_MASK)   | \
                                (UINT64_CAST (_pa) >> 3 & 0x3 << 4)          | \
                                ((_rgn) & 0x1e) << 5))

static __inline uint64_t BDPRT_ENTRY_L(paddr_t pa,uint32_t rgn) {
	uint64_t word=*BDPRT_ENTRY_ADDR(pa,rgn);

	if(rgn&0x20)			/*If the region is > 32, move it down*/
		word = word >> 32;
	if(rgn&0x1)			/*If the region is odd, get that part */
		word = word >> 16;
	word = word & 0xffff;		/*Get the 16 bits we are interested in*/

	return word;
}

static __inline void BDPRT_ENTRY_S(paddr_t pa,uint32_t rgn,uint64_t val) {
        uint64_t *addr=(uint64_t *)BDPRT_ENTRY_ADDR(pa,rgn);
        uint64_t word,mask;

        word=*addr;
	mask=0;
	if(rgn&0x1) {
		mask|=0x0000ffff0000ffff;
		val=val<<16;
	}
	else
		mask|=0xffff0000ffff0000;
	if(rgn&0x20) {
		mask|=0x00000000ffffffff;
		val=val<<32;
	}
	else
		mask|=0xffffffff00000000;
	word &= mask;
	word |= val;

	*(addr++)=word;
	addr++;
        *(addr++)=word;
        addr++;
        *(addr++)=word;
        addr++;
        *addr=word;
}
#endif	/*_LANGUAGE_C*/

#define BDCNT_ENTRY(_pa)	(HSPEC_BASE +				      \
				  NODE_ADDRSPACE_SIZE * 7 / 8 + 0x8    	    | \