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2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
49 lines
1017 B
C
49 lines
1017 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright 2014 IBM Corp.
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*/
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#ifndef _MISC_CXL_BASE_H
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#define _MISC_CXL_BASE_H
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#ifdef CONFIG_CXL_BASE
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#define CXL_IRQ_RANGES 4
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struct cxl_irq_ranges {
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irq_hw_number_t offset[CXL_IRQ_RANGES];
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irq_hw_number_t range[CXL_IRQ_RANGES];
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};
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extern atomic_t cxl_use_count;
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static inline bool cxl_ctx_in_use(void)
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{
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return (atomic_read(&cxl_use_count) != 0);
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}
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static inline void cxl_ctx_get(void)
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{
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atomic_inc(&cxl_use_count);
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}
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static inline void cxl_ctx_put(void)
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{
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atomic_dec(&cxl_use_count);
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}
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struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
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void cxl_afu_put(struct cxl_afu *afu);
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void cxl_slbia(struct mm_struct *mm);
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#else /* CONFIG_CXL_BASE */
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static inline bool cxl_ctx_in_use(void) { return false; }
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static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
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static inline void cxl_afu_put(struct cxl_afu *afu) {}
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static inline void cxl_slbia(struct mm_struct *mm) {}
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#endif /* CONFIG_CXL_BASE */
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#endif
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