projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9d670280 JX |
1 | #ifndef _ARCH_POWERPC_MM_ICSWX_H_ |
| 2 | #define _ARCH_POWERPC_MM_ICSWX_H_ | |
| 3 | ||
| 4 | /* | |
| 5 | * ICSWX and ACOP Management | |
| 6 | * | |
| 7 | * Copyright (C) 2011 Anton Blanchard, IBM Corp. <anton@samba.org> | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or | |
| 10 | * modify it under the terms of the GNU General Public License | |
| 11 | * as published by the Free Software Foundation; either version | |
| 12 | * 2 of the License, or (at your option) any later version. | |
| 13 | * | |
| 14 | */ | |
| 15 | ||
| 16 | #include <asm/mmu_context.h> | |
| 17 | ||
| 18 | /* also used to denote that PIDs are not used */ | |
| 19 | #define COP_PID_NONE 0 | |
| 20 | ||
| 21 | static inline void sync_cop(void *arg) | |
| 22 | { | |
| 23 | struct mm_struct *mm = arg; | |
| 24 | ||
| 25 | if (mm == current->active_mm) | |
| 26 | switch_cop(current->active_mm); | |
| 27 | } | |
| 28 | ||
| 29 | #ifdef CONFIG_PPC_ICSWX_PID | |
| 30 | extern int get_cop_pid(struct mm_struct *mm); | |
| 31 | extern int disable_cop_pid(struct mm_struct *mm); | |
| 32 | extern void free_cop_pid(int free_pid); | |
| 33 | #else | |
| 34 | #define get_cop_pid(m) (COP_PID_NONE) | |
| 35 | #define disable_cop_pid(m) (COP_PID_NONE) | |
| 36 | #define free_cop_pid(p) | |
| 37 | #endif | |
| 38 | ||
| c3dcf53a JX |
39 | /* |
| 40 | * These are implementation bits for architected registers. If this | |
| 41 | * ever becomes architecture the should be moved to reg.h et. al. | |
| 42 | */ | |
| 43 | /* UCT is the same bit for Server and Embedded */ | |
| 44 | #define ICSWX_DSI_UCT 0x00004000 /* Unavailable Coprocessor Type */ | |
| 45 | ||
| 46 | #ifdef CONFIG_PPC_BOOK3E | |
| 47 | /* Embedded implementation gives us no hints as to what the CT is */ | |
| 48 | #define ICSWX_GET_CT_HINT(x) (-1) | |
| 49 | #else | |
| 50 | /* Server implementation contains the CT value in the DSISR */ | |
| 51 | #define ICSWX_DSISR_CTMASK 0x00003f00 | |
| 52 | #define ICSWX_GET_CT_HINT(x) (((x) & ICSWX_DSISR_CTMASK) >> 8) | |
| 53 | #endif | |
| 54 | ||
| 55 | #define ICSWX_RC_STARTED 0x8 /* The request has been started */ | |
| 56 | #define ICSWX_RC_NOT_IDLE 0x4 /* No coprocessor found idle */ | |
| 57 | #define ICSWX_RC_NOT_FOUND 0x2 /* No coprocessor found */ | |
| 58 | #define ICSWX_RC_UNDEFINED 0x1 /* Reserved */ | |
| 59 | ||
| 60 | extern int acop_handle_fault(struct pt_regs *regs, unsigned long address, | |
| 61 | unsigned long error_code); | |
| de801de1 JX |
62 | |
| 63 | static inline u64 acop_copro_type_bit(unsigned int type) | |
| 64 | { | |
| 65 | return 1ULL << (63 - type); | |
| 66 | } | |
| 67 | ||
| 9d670280 | 68 | #endif /* !_ARCH_POWERPC_MM_ICSWX_H_ */ |