Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright 2014 IBM Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #ifndef _MISC_CXL_BASE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #define _MISC_CXL_BASE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifdef CONFIG_CXL_BASE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define CXL_IRQ_RANGES 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) struct cxl_irq_ranges {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	irq_hw_number_t offset[CXL_IRQ_RANGES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	irq_hw_number_t range[CXL_IRQ_RANGES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) extern atomic_t cxl_use_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static inline bool cxl_ctx_in_use(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)        return (atomic_read(&cxl_use_count) != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static inline void cxl_ctx_get(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)        atomic_inc(&cxl_use_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static inline void cxl_ctx_put(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)        atomic_dec(&cxl_use_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) void cxl_afu_put(struct cxl_afu *afu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) void cxl_slbia(struct mm_struct *mm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #else /* CONFIG_CXL_BASE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static inline bool cxl_ctx_in_use(void) { return false; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static inline void cxl_afu_put(struct cxl_afu *afu) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static inline void cxl_slbia(struct mm_struct *mm) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #endif /* CONFIG_CXL_BASE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #endif