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62 lines
1.8 KiB
62 lines
1.8 KiB
/*
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* Copyright 2014 IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _MISC_CXL_BASE_H
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#define _MISC_CXL_BASE_H
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#include <misc/cxl.h>
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#ifdef CONFIG_CXL_BASE
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#define CXL_IRQ_RANGES 4
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struct cxl_irq_ranges {
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irq_hw_number_t offset[CXL_IRQ_RANGES];
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irq_hw_number_t range[CXL_IRQ_RANGES];
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};
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extern atomic_t cxl_use_count;
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static inline bool cxl_ctx_in_use(void)
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{
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return (atomic_read(&cxl_use_count) != 0);
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}
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static inline void cxl_ctx_get(void)
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{
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atomic_inc(&cxl_use_count);
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}
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static inline void cxl_ctx_put(void)
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{
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atomic_dec(&cxl_use_count);
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}
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struct cxl_afu *cxl_afu_get(struct cxl_afu *afu);
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void cxl_afu_put(struct cxl_afu *afu);
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void cxl_slbia(struct mm_struct *mm);
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bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
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void cxl_pci_disable_device(struct pci_dev *dev);
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int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
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void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev);
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#else /* CONFIG_CXL_BASE */
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static inline bool cxl_ctx_in_use(void) { return false; }
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static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu) { return NULL; }
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static inline void cxl_afu_put(struct cxl_afu *afu) {}
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static inline void cxl_slbia(struct mm_struct *mm) {}
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static inline bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu) { return false; }
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static inline void cxl_pci_disable_device(struct pci_dev *dev) {}
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static inline int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) { return -ENODEV; }
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static inline void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev) {}
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#endif /* CONFIG_CXL_BASE */
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#endif
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