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1cd258d7 IM |
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 | ||
ec249dd8 MN |
10 | #ifndef _MISC_CXL_BASE_H |
11 | #define _MISC_CXL_BASE_H | |
1cd258d7 | 12 | |
a19bd79e IM |
13 | #include <misc/cxl.h> |
14 | ||
1cd258d7 IM |
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 | ||
62ccf2d2 IM |
41 | struct cxl_afu *cxl_afu_get(struct cxl_afu *afu); |
42 | void cxl_afu_put(struct cxl_afu *afu); | |
1cd258d7 | 43 | void cxl_slbia(struct mm_struct *mm); |
a19bd79e IM |
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); | |
a2f67d5e IM |
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); | |
1cd258d7 IM |
48 | |
49 | #else /* CONFIG_CXL_BASE */ | |
50 | ||
51 | static inline bool cxl_ctx_in_use(void) { return false; } | |
62ccf2d2 IM |
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) {} | |
1cd258d7 | 54 | static inline void cxl_slbia(struct mm_struct *mm) {} |
a19bd79e IM |
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) {} | |
a2f67d5e IM |
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) {} | |
1cd258d7 IM |
59 | |
60 | #endif /* CONFIG_CXL_BASE */ | |
61 | ||
62 | #endif |