projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1cd258d7 IM |
1 | /* |
| 2 | * Copyright 2014 IBM Corp. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation; either version | |
| 7 | * 2 of the License, or (at your option) any later version. | |
| 8 | */ | |
| 9 | ||
| ec249dd8 MN |
10 | #ifndef _MISC_CXL_BASE_H |
| 11 | #define _MISC_CXL_BASE_H | |
| 1cd258d7 IM |
12 | |
| 13 | #ifdef CONFIG_CXL_BASE | |
| 14 | ||
| 15 | #define CXL_IRQ_RANGES 4 | |
| 16 | ||
| 17 | struct cxl_irq_ranges { | |
| 18 | irq_hw_number_t offset[CXL_IRQ_RANGES]; | |
| 19 | irq_hw_number_t range[CXL_IRQ_RANGES]; | |
| 20 | }; | |
| 21 | ||
| 22 | extern atomic_t cxl_use_count; | |
| 23 | ||
| 24 | static inline bool cxl_ctx_in_use(void) | |
| 25 | { | |
| 26 | return (atomic_read(&cxl_use_count) != 0); | |
| 27 | } | |
| 28 | ||
| 29 | static inline void cxl_ctx_get(void) | |
| 30 | { | |
| 31 | atomic_inc(&cxl_use_count); | |
| 32 | } | |
| 33 | ||
| 34 | static inline void cxl_ctx_put(void) | |
| 35 | { | |
| 36 | atomic_dec(&cxl_use_count); | |
| 37 | } | |
| 38 | ||
| 39 | void cxl_slbia(struct mm_struct *mm); | |
| 40 | ||
| 41 | #else /* CONFIG_CXL_BASE */ | |
| 42 | ||
| 43 | static inline bool cxl_ctx_in_use(void) { return false; } | |
| 44 | static inline void cxl_slbia(struct mm_struct *mm) {} | |
| 45 | ||
| 46 | #endif /* CONFIG_CXL_BASE */ | |
| 47 | ||
| 48 | #endif |