| /* |
| * Copyright 2014 IBM Corp. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #ifndef _MISC_CXL_BASE_H |
| #define _MISC_CXL_BASE_H |
| |
| #ifdef CONFIG_CXL_BASE |
| |
| #define CXL_IRQ_RANGES 4 |
| |
| struct cxl_irq_ranges { |
| irq_hw_number_t offset[CXL_IRQ_RANGES]; |
| irq_hw_number_t range[CXL_IRQ_RANGES]; |
| }; |
| |
| extern atomic_t cxl_use_count; |
| |
| static inline bool cxl_ctx_in_use(void) |
| { |
| return (atomic_read(&cxl_use_count) != 0); |
| } |
| |
| static inline void cxl_ctx_get(void) |
| { |
| atomic_inc(&cxl_use_count); |
| } |
| |
| static inline void cxl_ctx_put(void) |
| { |
| atomic_dec(&cxl_use_count); |
| } |
| |
| struct cxl_afu *cxl_afu_get(struct cxl_afu *afu); |
| void cxl_afu_put(struct cxl_afu *afu); |
| void cxl_slbia(struct mm_struct *mm); |
| |
| #else /* CONFIG_CXL_BASE */ |
| |
| static inline bool cxl_ctx_in_use(void) { return false; } |
| static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; } |
| static inline void cxl_afu_put(struct cxl_afu *afu) {} |
| static inline void cxl_slbia(struct mm_struct *mm) {} |
| |
| #endif /* CONFIG_CXL_BASE */ |
| |
| #endif |