| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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| 2 | /* |
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| 3 | * Host1x context devices |
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| 4 | * |
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| 5 | * Copyright (c) 2020, NVIDIA Corporation. |
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| 6 | */ |
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| 7 | |
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| 8 | #ifndef __HOST1X_CONTEXT_H |
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| 9 | #define __HOST1X_CONTEXT_H |
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| 10 | |
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| 11 | #include <linux/mutex.h> |
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| 12 | #include <linux/refcount.h> |
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| 13 | |
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| 14 | struct host1x; |
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| 15 | |
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| 16 | extern struct bus_type host1x_context_device_bus_type; |
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| 17 | |
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| 18 | struct host1x_memory_context_list { |
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| 19 | struct mutex lock; |
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| 20 | struct host1x_memory_context *devs; |
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| 21 | unsigned int len; |
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| 22 | }; |
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| 23 | |
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| 24 | #ifdef CONFIG_IOMMU_API |
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| 25 | int host1x_memory_context_list_init(struct host1x *host1x); |
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| 26 | void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl); |
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| 27 | #else |
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| 28 | static inline int host1x_memory_context_list_init(struct host1x *host1x) |
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| 29 | { |
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| 30 | return 0; |
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| 31 | } |
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| 32 | |
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| 33 | static inline void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl) |
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| 34 | { |
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| 35 | } |
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| 36 | #endif |
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| 37 | |
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| 38 | #endif |
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| 39 | |
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