5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
49 lines
1017 B
C
49 lines
1017 B
C
/* 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
|