Release 4.10 include/misc/cxl-base.h
/*
* Copyright 2014 IBM Corp.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef _MISC_CXL_BASE_H
#define _MISC_CXL_BASE_H
#include <misc/cxl.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);
}
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static inline void cxl_ctx_get(void)
{
atomic_inc(&cxl_use_count);
}
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static inline void cxl_ctx_put(void)
{
atomic_dec(&cxl_use_count);
}
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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);
bool cxl_pci_associate_default_context(struct pci_dev *dev, struct cxl_afu *afu);
void cxl_pci_disable_device(struct pci_dev *dev);
int cxl_cx4_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type);
void cxl_cx4_teardown_msi_irqs(struct pci_dev *pdev);
#else /* CONFIG_CXL_BASE */
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 */
#endif
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