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TOMOYO Linux Cross Reference
Linux/include/misc/cxl-base.h

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  1 /*
  2  * Copyright 2014 IBM Corp.
  3  *
  4  * This program is free software; you can redistribute it and/or
  5  * modify it under the terms of the GNU General Public License
  6  * as published by the Free Software Foundation; either version
  7  * 2 of the License, or (at your option) any later version.
  8  */
  9 
 10 #ifndef _MISC_CXL_BASE_H
 11 #define _MISC_CXL_BASE_H
 12 
 13 #include <misc/cxl.h>
 14 
 15 #ifdef CONFIG_CXL_BASE
 16 
 17 #define CXL_IRQ_RANGES 4
 18 
 19 struct cxl_irq_ranges {
 20         irq_hw_number_t offset[CXL_IRQ_RANGES];
 21         irq_hw_number_t range[CXL_IRQ_RANGES];
 22 };
 23 
 24 extern atomic_t cxl_use_count;
 25 
 26 static inline bool cxl_ctx_in_use(void)
 27 {
 28        return (atomic_read(&cxl_use_count) != 0);
 29 }
 30 
 31 static inline void cxl_ctx_get(void)
 32 {
 33        atomic_inc(&cxl_use_count);
 34 }
 35 
 36 static inline void cxl_ctx_put(void)
 37 {
 38        atomic_dec(&cxl_use_count);
 39 }
 40 
 41 struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
 42 void cxl_afu_put(struct cxl_afu *afu);
 43 void cxl_slbia(struct mm_struct *mm);
 44 bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
 45 void cxl_pci_disable_device(struct pci_dev *dev);
 46 int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
 47 void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev);
 48 
 49 #else /* CONFIG_CXL_BASE */
 50 
 51 static inline bool cxl_ctx_in_use(void) { return false; }
 52 static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
 53 static inline void cxl_afu_put(struct cxl_afu *afu) {}
 54 static inline void cxl_slbia(struct mm_struct *mm) {}
 55 static inline bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) { return false; }
 56 static inline void cxl_pci_disable_device(struct pci_dev *dev) {}
 57 static inline int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { return -ENODEV; }
 58 static inline void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev) {}
 59 
 60 #endif /* CONFIG_CXL_BASE */
 61 
 62 #endif
 63 

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