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68 lines
2.0 KiB
68 lines
2.0 KiB
#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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