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/* 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