62dbd2f29e
This is will be required to prevent lowering the ipl when a critical_enter() is present in the interrupt path when handling a machine check. reviewed by: jhb
566 lines
15 KiB
C
566 lines
15 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: alpha_cpu.h,v 1.15 1997/09/20 19:02:34 mjacob Exp */
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/*
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* Copyright (c) 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef __ALPHA_ALPHA_CPU_H__
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#define __ALPHA_ALPHA_CPU_H__
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/*
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* Alpha CPU + OSF/1 PALcode definitions for use by the kernel.
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*
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* Definitions for:
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*
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* Process Control Block
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* Interrupt/Exception/Syscall Stack Frame
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* Processor Status Register
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* Machine Check Error Summary Register
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* Machine Check Logout Area
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* Virtual Memory Management
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* Kernel Entry Vectors
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* MMCSR Fault Type Codes
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* Translation Buffer Invalidation
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*
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* and miscellaneous PALcode operations.
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*/
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/*
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* Process Control Block definitions [OSF/1 PALcode Specific]
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*/
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struct alpha_pcb {
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unsigned long apcb_ksp; /* kernel stack ptr */
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unsigned long apcb_usp; /* user stack ptr */
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unsigned long apcb_ptbr; /* page table base reg */
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unsigned int apcb_cpc; /* charged process cycles */
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unsigned int apcb_asn; /* address space number */
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unsigned long apcb_unique; /* process unique value */
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unsigned long apcb_flags; /* flags; see below */
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unsigned long apcb_decrsv0; /* DEC reserved */
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unsigned long apcb_decrsv1; /* DEC reserved */
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};
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#define ALPHA_PCB_FLAGS_FEN 0x0000000000000001
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#define ALPHA_PCB_FLAGS_PME 0x4000000000000000
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/*
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* Interrupt/Exception/Syscall "Hardware" (really PALcode)
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* Stack Frame definitions
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*
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* These are quadword offsets from the sp on kernel entry, i.e.
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* to get to the value in question you access (sp + (offset * 8)).
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*
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* On syscall entry, A0-A2 aren't written to memory but space
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* _is_ reserved for them.
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*/
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#define ALPHA_HWFRAME_PS 0 /* processor status register */
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#define ALPHA_HWFRAME_PC 1 /* program counter */
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#define ALPHA_HWFRAME_GP 2 /* global pointer */
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#define ALPHA_HWFRAME_A0 3 /* a0 */
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#define ALPHA_HWFRAME_A1 4 /* a1 */
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#define ALPHA_HWFRAME_A2 5 /* a2 */
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#define ALPHA_HWFRAME_SIZE 6 /* 6 8-byte words */
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/*
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* Processor Status Register [OSF/1 PALcode Specific]
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*
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* Includes user/kernel mode bit, interrupt priority levels, etc.
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*/
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#define ALPHA_PSL_USERMODE 0x0008 /* set -> user mode */
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#define ALPHA_PSL_IPL_MASK 0x0007 /* interrupt level mask */
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#define ALPHA_PSL_IPL_0 0x0000 /* all interrupts enabled */
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#define ALPHA_PSL_IPL_SOFT 0x0001 /* software ints disabled */
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#define ALPHA_PSL_IPL_IO 0x0004 /* I/O dev ints disabled */
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#define ALPHA_PSL_IPL_CLOCK 0x0005 /* clock ints disabled */
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#define ALPHA_PSL_IPL_HIGH 0x0006 /* all but mchecks disabled */
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#define ALPHA_PSL_IPL_MCES 0x0007 /* all interrupts disabled */
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#define ALPHA_PSL_MUST_BE_ZERO 0xfffffffffffffff0
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/* Convenience constants: what must be set/clear in user mode */
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#define ALPHA_PSL_USERSET ALPHA_PSL_USERMODE
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#define ALPHA_PSL_USERCLR (ALPHA_PSL_MUST_BE_ZERO | ALPHA_PSL_IPL_MASK)
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/*
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* Interrupt Type Code Definitions [OSF/1 PALcode Specific]
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*/
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#define ALPHA_INTR_XPROC 0 /* interprocessor interrupt */
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#define ALPHA_INTR_CLOCK 1 /* clock interrupt */
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#define ALPHA_INTR_ERROR 2 /* correctable error or mcheck */
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#define ALPHA_INTR_DEVICE 3 /* device interrupt */
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#define ALPHA_INTR_PERF 4 /* performance counter */
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#define ALPHA_INTR_PASSIVE 5 /* passive release */
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/*
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* Machine Check Error Summary Register definitions [OSF/1 PALcode Specific]
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*
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* The following bits are values as read. On write, _PCE, _SCE, and
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* _MIP are "write 1 to clear."
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*/
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#define ALPHA_MCES_IMP \
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0xffffffff00000000 /* impl. dependent */
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#define ALPHA_MCES_RSVD \
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0x00000000ffffffe0 /* reserved */
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#define ALPHA_MCES_DSC \
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0x0000000000000010 /* disable system correctable error reporting */
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#define ALPHA_MCES_DPC \
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0x0000000000000008 /* disable processor correctable error reporting */
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#define ALPHA_MCES_PCE \
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0x0000000000000004 /* processor correctable error in progress */
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#define ALPHA_MCES_SCE \
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0x0000000000000002 /* system correctable error in progress */
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#define ALPHA_MCES_MIP \
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0x0000000000000001 /* machine check in progress */
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/*
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* Machine Check Error Summary Register definitions [OSF/1 PALcode Specific]
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*/
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struct alpha_logout_area {
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unsigned int la_frame_size; /* frame size */
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unsigned int la_flags; /* flags; see below */
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unsigned int la_cpu_offset; /* offset to cpu area */
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unsigned int la_system_offset; /* offset to system area */
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};
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#define ALPHA_LOGOUT_FLAGS_RETRY 0x80000000 /* OK to continue */
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#define ALPHA_LOGOUT_FLAGS_SE 0x40000000 /* second error */
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#define ALPHA_LOGOUT_FLAGS_SBZ 0x3fffffff /* should be zero */
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#define ALPHA_LOGOUT_NOT_BUILT \
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(struct alpha_logout_area *)0xffffffffffffffff)
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#define ALPHA_LOGOUT_PAL_AREA(lap) \
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(unsigned long *)((unsigned char *)(lap) + 16)
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#define ALPHA_LOGOUT_PAL_SIZE(lap) \
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((lap)->la_cpu_offset - 16)
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#define ALPHA_LOGOUT_CPU_AREA(lap) \
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(unsigned long *)((unsigned char *)(lap) + (lap)->la_cpu_offset)
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#define ALPHA_LOGOUT_CPU_SIZE(lap) \
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((lap)->la_system_offset - (lap)->la_cpu_offset)
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#define ALPHA_LOGOUT_SYSTEM_AREA(lap) \
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(unsigned long *)((unsigned char *)(lap) + (lap)->la_system_offset)
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#define ALPHA_LOGOUT_SYSTEM_SIZE(lap) \
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((lap)->la_frame_size - (lap)->la_system_offset)
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/*
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* Virtual Memory Management definitions [OSF/1 PALcode Specific]
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*
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* Includes user and kernel space addresses and information,
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* page table entry definitions, etc.
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*
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* NOTE THAT THESE DEFINITIONS MAY CHANGE IN FUTURE ALPHA CPUS!
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*/
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#define ALPHA_PGSHIFT 13 /* bits that index within page */
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#define ALPHA_PTSHIFT 10 /* bits that index within page tables */
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#define ALPHA_PGBYTES (1 << ALPHA_PGSHIFT)
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#define ALPHA_L3SHIFT ALPHA_PGSHIFT
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#define ALPHA_L2SHIFT (ALPHA_L3SHIFT+ALPHA_PTSHIFT)
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#define ALPHA_L1SHIFT (ALPHA_L2SHIFT+ALPHA_PTSHIFT)
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#define ALPHA_USEG_BASE 0 /* virtual */
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#define ALPHA_USEG_END 0x000003ffffffffffLL
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#define ALPHA_K0SEG_BASE 0xfffffc0000000000LL /* direct-mapped */
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#define ALPHA_K0SEG_END 0xfffffdffffffffffLL
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#define ALPHA_K1SEG_BASE 0xfffffe0000000000LL /* virtual */
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#define ALPHA_K1SEG_END 0xffffffffffffffffLL
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#define ALPHA_K0SEG_TO_PHYS(x) ((x) & ~ALPHA_K0SEG_BASE)
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#define ALPHA_PHYS_TO_K0SEG(x) ((x) | ALPHA_K0SEG_BASE)
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#define ALPHA_PTE_VALID 0x0001
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#define ALPHA_PTE_FAULT_ON_READ 0x0002
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#define ALPHA_PTE_FAULT_ON_WRITE 0x0004
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#define ALPHA_PTE_FAULT_ON_EXECUTE 0x0008
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#define ALPHA_PTE_ASM 0x0010 /* addr. space match */
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#define ALPHA_PTE_GRANULARITY 0x0060 /* granularity hint */
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#define ALPHA_PTE_PROT 0xff00
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#define ALPHA_PTE_KR 0x0100
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#define ALPHA_PTE_UR 0x0200
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#define ALPHA_PTE_KW 0x1000
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#define ALPHA_PTE_UW 0x2000
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#define ALPHA_PTE_WRITE (ALPHA_PTE_KW | ALPHA_PTE_UW)
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#define ALPHA_PTE_SOFTWARE 0xffff0000
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#define ALPHA_PTE_PFN 0xffffffff00000000
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#define ALPHA_PTE_TO_PFN(pte) ((u_long)(pte) >> 32)
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#define ALPHA_PTE_FROM_PFN(pfn) ((u_long)(pfn) << 32)
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typedef unsigned long alpha_pt_entry_t;
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/*
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* Kernel Entry Vectors. [OSF/1 PALcode Specific]
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*/
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#define ALPHA_KENTRY_INT 0
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#define ALPHA_KENTRY_ARITH 1
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#define ALPHA_KENTRY_MM 2
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#define ALPHA_KENTRY_IF 3
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#define ALPHA_KENTRY_UNA 4
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#define ALPHA_KENTRY_SYS 5
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/*
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* MMCSR Fault Type Codes. [OSF/1 PALcode Specific]
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*/
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#define ALPHA_MMCSR_INVALTRANS 0
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#define ALPHA_MMCSR_ACCESS 1
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#define ALPHA_MMCSR_FOR 2
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#define ALPHA_MMCSR_FOE 3
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#define ALPHA_MMCSR_FOW 4
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/*
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* Instruction Fault Type Codes. [OSF/1 PALcode Specific]
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*/
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#define ALPHA_IF_CODE_BPT 0
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#define ALPHA_IF_CODE_BUGCHK 1
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#define ALPHA_IF_CODE_GENTRAP 2
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#define ALPHA_IF_CODE_FEN 3
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#define ALPHA_IF_CODE_OPDEC 4
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/*
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* Translation Buffer Invalidation definitions [OSF/1 PALcode Specific]
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*/
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#define ALPHA_TBIA() alpha_pal_tbi(-2, 0) /* all TB entries */
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#define ALPHA_TBIAP() alpha_pal_tbi(-1, 0) /* all per-process */
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#define ALPHA_TBISI(va) alpha_pal_tbi(1, (va)) /* ITB entry for va */
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#define ALPHA_TBISD(va) alpha_pal_tbi(2, (va)) /* DTB entry for va */
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#define ALPHA_TBIS(va) alpha_pal_tbi(3, (va)) /* all for va */
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/*
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* Bits used in the amask instruction [EV56 and later]
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*/
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#define ALPHA_AMASK_BWX 0x0001 /* byte/word extension */
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#define ALPHA_AMASK_FIX 0x0002 /* sqrt and f <-> i conversion extension */
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#define ALPHA_AMASK_CIX 0x0004 /* count extension */
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#define ALPHA_AMASK_MVI 0x0100 /* multimedia extension */
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#define ALPHA_AMASK_PRECISE 0x0200 /* Precise arithmetic traps */
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/*
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* Chip family IDs returned by implver instruction
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*/
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#define ALPHA_IMPLVER_EV4 0 /* LCA/EV4/EV45 */
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#define ALPHA_IMPLVER_EV5 1 /* EV5/EV56/PCA56 */
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#define ALPHA_IMPLVER_EV6 2 /* EV6 */
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/*
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* Inlines for Alpha instructions normally inaccessible from C.
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*/
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static __inline u_int64_t
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alpha_amask(u_int64_t mask)
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{
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u_int64_t result;
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__asm__ __volatile__ (
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"amask %1,%0"
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: "=r" (result)
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: "r" (mask));
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return result;
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}
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static __inline unsigned long
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alpha_implver(void)
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{
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u_int64_t result;
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__asm__ __volatile__ (
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"implver %0"
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: "=r" (result));
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return result;
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}
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static __inline unsigned long
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alpha_rpcc(void)
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{
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u_int64_t result;
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__asm__ __volatile__ (
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"rpcc %0"
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: "=r" (result));
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return result;
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}
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static __inline void
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alpha_mb(void)
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{
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__asm__ __volatile__ ("mb");
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}
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static __inline void
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alpha_wmb(void)
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{
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/*
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* XXX dfr: NetBSD originally had mb instead of wmb for
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* alpha_wmb(). I'm not sure why so I'm leaving it alone. I
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* think it should be safe to use wmb though.
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*/
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__asm__ __volatile__ ("mb");
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}
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/*
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* Inlines for OSF/1 PALcode operations.
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*/
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static __inline void
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alpha_pal_halt(void)
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{
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__asm__ __volatile__ ("call_pal 0x0 #PAL_halt");
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}
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static __inline void
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alpha_pal_cflush(u_int64_t pfn)
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{
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register u_int64_t a0 __asm__("$16") = pfn;
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__asm__ __volatile__ (
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"call_pal 0x1 #PAL_cflush"
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:
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: "r" (a0));
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}
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static __inline void
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alpha_pal_draina(void)
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{
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__asm__ __volatile__ ("call_pal 0x2 #PAL_draina" : : : "memory");
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}
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static __inline void
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alpha_pal_wripir(u_int64_t ipir)
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{
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register u_int64_t a0 __asm__("$16") = ipir;
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__asm__ __volatile__ (
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"call_pal 0xd #PAL_ipir"
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: "=r" (a0)
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: "0" (a0)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline u_int64_t
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alpha_pal_rdmces(void)
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{
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register u_int64_t v0 __asm__("$0");
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__asm__ __volatile__ (
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"call_pal 0x10 #PAL_OSF1_rdmces"
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: "=r" (v0)
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:
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: "$1", "$22", "$23", "$24", "$25");
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return v0;
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}
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static __inline void
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alpha_pal_wrmces(u_int64_t mces)
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{
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register u_int64_t a0 __asm__("$16") = mces;
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__asm__ __volatile__ (
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"call_pal 0x11 #PAL_wrmces"
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: "=r" (a0)
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: "0" (a0)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline void
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alpha_pal_wrfen(u_int64_t fen)
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{
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register u_int64_t a0 __asm__("$16") = fen;
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__asm__ __volatile__ (
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"call_pal 0x2b #PAL_wrfen"
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: "=r" (a0)
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: "0" (a0)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline void
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alpha_pal_wrvptptr(u_int64_t vptptr)
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{
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register u_int64_t a0 __asm__("$16") = vptptr;
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__asm__ __volatile__ (
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"call_pal 0x2d #PAL_wrvptptr"
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: "=r" (a0)
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: "0" (a0)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline u_int64_t
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alpha_pal_swpctx(u_int64_t pcb)
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{
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register u_int64_t a0 __asm__("$16") = pcb;
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register u_int64_t v0 __asm__("$0");
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__asm__ __volatile__ (
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"call_pal 0x30 #PAL_OSF1_swpctx"
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: "=r" (v0), "=r" (a0)
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: "1" (a0)
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: "$1", "$22", "$23", "$24", "$25", "memory");
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return v0;
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}
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static __inline void
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alpha_pal_wrval(u_int64_t sysvalue)
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{
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register u_int64_t a0 __asm__("$16") = sysvalue;
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__asm__ __volatile__ (
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"call_pal 0x31 #PAL_wrval"
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: "=r" (a0)
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: "0" (a0)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline u_int64_t
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alpha_pal_rdval(void)
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{
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register u_int64_t v0 __asm__("$0");
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__asm__ __volatile__ (
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"call_pal 0x32 #PAL_OSF1_rdval"
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: "=r" (v0)
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:
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: "$1", "$22", "$23", "$24", "$25");
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return v0;
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}
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static __inline void
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alpha_pal_tbi(u_int64_t op, u_int64_t va)
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{
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register u_int64_t a0 __asm__("$16") = op;
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register u_int64_t a1 __asm__("$17") = va;
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__asm__ __volatile__ (
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"call_pal 0x33 #PAL_OSF1_tbi"
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: "=r" (a0), "=r" (a1)
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: "0" (a0), "1" (a1)
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: "$1", "$22", "$23", "$24", "$25");
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}
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static __inline void
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alpha_pal_wrent(void *ent, u_int64_t which)
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{
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register u_int64_t a0 __asm__("$16") = (u_int64_t) ent;
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register u_int64_t a1 __asm__("$17") = which;
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__asm__ __volatile__ (
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"call_pal 0x34 #PAL_OSF1_wrent"
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: "=r" (a0), "=r" (a1)
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: "0" (a0), "1" (a1)
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: "$1", "$22", "$23", "$24", "$25");
|
|
}
|
|
|
|
static __inline u_int64_t
|
|
alpha_pal_swpipl(u_int64_t newipl)
|
|
{
|
|
register u_int64_t a0 __asm__("$16") = newipl;
|
|
register u_int64_t v0 __asm__("$0");
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x35 #PAL_OSF1_swpipl"
|
|
: "=r" (v0), "=r" (a0)
|
|
: "1" (a0)
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return v0;
|
|
}
|
|
|
|
static __inline u_int64_t
|
|
alpha_pal_rdps(void)
|
|
{
|
|
register u_int64_t v0 __asm__("$0");
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x36 #PAL_OSF1_rdps"
|
|
: "=r" (v0)
|
|
:
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return v0;
|
|
}
|
|
|
|
static __inline void
|
|
alpha_pal_wrusp(u_int64_t usp)
|
|
{
|
|
register u_int64_t a0 __asm__("$16") = usp;
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x38 #PAL_wrusp"
|
|
: "=r" (a0)
|
|
: "0" (a0)
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
}
|
|
|
|
static __inline u_int64_t
|
|
alpha_pal_wrperfmon(u_int64_t arg0, u_int64_t arg1)
|
|
{
|
|
register u_int64_t v0 __asm__("$0");
|
|
register u_int64_t a0 __asm__("$16") = arg0;
|
|
register u_int64_t a1 __asm__("$17") = arg1;
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x39 #PAL_OSF1_wrperfmon"
|
|
: "=r" (a0), "=r" (a1), "=r" (v0)
|
|
: "0" (a0), "1" (a1)
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return v0;
|
|
}
|
|
|
|
static __inline u_int64_t
|
|
alpha_pal_rdusp(void)
|
|
{
|
|
register u_int64_t v0 __asm__("$0");
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x3a #PAL_OSF1_rdusp"
|
|
: "=r" (v0)
|
|
:
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return v0;
|
|
}
|
|
|
|
static __inline u_int64_t
|
|
alpha_pal_whami(void)
|
|
{
|
|
register u_int64_t v0 __asm__("$0");
|
|
__asm__ __volatile__ (
|
|
"call_pal 0x3c #PAL_OSF1_whami"
|
|
: "=r" (v0)
|
|
:
|
|
: "$1", "$22", "$23", "$24", "$25");
|
|
return v0;
|
|
}
|
|
|
|
static __inline void
|
|
alpha_pal_imb(void)
|
|
{
|
|
__asm__ __volatile__ ("call_pal 0x86 #PAL_imb");
|
|
}
|
|
|
|
#endif /* __ALPHA_ALPHA_CPU_H__ */
|