From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- include/misc/cxl-base.h | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 include/misc/cxl-base.h (limited to 'include/misc/cxl-base.h') diff --git a/include/misc/cxl-base.h b/include/misc/cxl-base.h new file mode 100644 index 000000000..2251da7f3 --- /dev/null +++ b/include/misc/cxl-base.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright 2014 IBM Corp. + */ + +#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 -- cgit v1.2.3