69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
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#ifndef _ARCH_POWERPC_MM_ICSWX_H_
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#define _ARCH_POWERPC_MM_ICSWX_H_
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/*
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* ICSWX and ACOP Management
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*
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* Copyright (C) 2011 Anton Blanchard, IBM Corp. <anton@samba.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <asm/mmu_context.h>
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/* also used to denote that PIDs are not used */
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#define COP_PID_NONE 0
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static inline void sync_cop(void *arg)
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{
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struct mm_struct *mm = arg;
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if (mm == current->active_mm)
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switch_cop(current->active_mm);
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}
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#ifdef CONFIG_PPC_ICSWX_PID
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extern int get_cop_pid(struct mm_struct *mm);
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extern int disable_cop_pid(struct mm_struct *mm);
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extern void free_cop_pid(int free_pid);
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#else
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#define get_cop_pid(m) (COP_PID_NONE)
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#define disable_cop_pid(m) (COP_PID_NONE)
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#define free_cop_pid(p)
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#endif
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/*
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* These are implementation bits for architected registers. If this
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* ever becomes architecture the should be moved to reg.h et. al.
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*/
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/* UCT is the same bit for Server and Embedded */
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#define ICSWX_DSI_UCT 0x00004000 /* Unavailable Coprocessor Type */
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#ifdef CONFIG_PPC_BOOK3E
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/* Embedded implementation gives us no hints as to what the CT is */
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#define ICSWX_GET_CT_HINT(x) (-1)
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#else
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/* Server implementation contains the CT value in the DSISR */
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#define ICSWX_DSISR_CTMASK 0x00003f00
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#define ICSWX_GET_CT_HINT(x) (((x) & ICSWX_DSISR_CTMASK) >> 8)
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#endif
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#define ICSWX_RC_STARTED 0x8 /* The request has been started */
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#define ICSWX_RC_NOT_IDLE 0x4 /* No coprocessor found idle */
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#define ICSWX_RC_NOT_FOUND 0x2 /* No coprocessor found */
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#define ICSWX_RC_UNDEFINED 0x1 /* Reserved */
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extern int acop_handle_fault(struct pt_regs *regs, unsigned long address,
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unsigned long error_code);
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static inline u64 acop_copro_type_bit(unsigned int type)
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{
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return 1ULL << (63 - type);
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}
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#endif /* !_ARCH_POWERPC_MM_ICSWX_H_ */
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