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linuxdebug/arch/mips/include/asm/sn/addrs.h

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null pointer error
2024-07-16 15:50:57 +02:00
/*
* 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 UINT64_CAST (unsigned long)
#else /* __ASSEMBLY__ */
#define UINT64_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) (IALIAS_BASE + (_x))
#define REMOTE_HUB_ADDR(_n, _x) ((NODE_SWIN_BASE(_n, 1) + 0x800000 + (_x)))
#ifndef __ASSEMBLY__
#define LOCAL_HUB_PTR(_x) ((u64 *)LOCAL_HUB_ADDR((_x)))
#define REMOTE_HUB_PTR(_n, _x) ((u64 *)REMOTE_HUB_ADDR((_n), (_x)))
#define LOCAL_HUB_L(_r) __raw_readq(LOCAL_HUB_PTR(_r))
#define LOCAL_HUB_S(_r, _d) __raw_writeq((_d), LOCAL_HUB_PTR(_r))
#define REMOTE_HUB_L(_n, _r) __raw_readq(REMOTE_HUB_PTR((_n), (_r)))
#define REMOTE_HUB_S(_n, _r, _d) __raw_writeq((_d), \
REMOTE_HUB_PTR((_n), (_r)))
#endif /* !__ASSEMBLY__ */
/*
* 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)
#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 KERN_VARS_ADDR(nasid) KLD_KERN_VARS(nasid)->pointer
#define KERN_VARS_SIZE(nasid) KLD_KERN_VARS(nasid)->size
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_SN_ADDRS_H */