2 * Copyright 2015 Advanced Micro Devices, Inc.
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5 * copy of this software and associated documentation files (the "Software"),
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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27 #include "cgs_common.h"
30 * cgs_import_gpu_mem() - Import dmabuf handle
31 * @cgs_device: opaque device handle
32 * @dmabuf_fd: DMABuf file descriptor
33 * @handle: memory handle (output)
35 * Must be called in the process context that dmabuf_fd belongs to.
37 * Return: 0 on success, -errno otherwise
39 typedef int (*cgs_import_gpu_mem_t)(void *cgs_device, int dmabuf_fd,
40 cgs_handle_t *handle);
43 * cgs_irq_source_set_func() - Callback for enabling/disabling interrupt sources
44 * @private_data: private data provided to cgs_add_irq_source
45 * @src_id: interrupt source ID
46 * @type: interrupt type
47 * @enabled: 0 = disable source, non-0 = enable source
49 * Return: 0 on success, -errno otherwise
51 typedef int (*cgs_irq_source_set_func_t)(void *private_data,
52 unsigned src_id, unsigned type,
56 * cgs_irq_handler_func() - Interrupt handler callback
57 * @private_data: private data provided to cgs_add_irq_source
58 * @src_id: interrupt source ID
59 * @iv_entry: pointer to raw ih ring entry
61 * This callback runs in interrupt context.
63 * Return: 0 on success, -errno otherwise
65 typedef int (*cgs_irq_handler_func_t)(void *private_data,
66 unsigned src_id, const uint32_t *iv_entry);
69 * cgs_add_irq_source() - Add an IRQ source
70 * @cgs_device: opaque device handle
71 * @src_id: interrupt source ID
72 * @num_types: number of interrupt types that can be independently enabled
73 * @set: callback function to enable/disable an interrupt type
74 * @handler: interrupt handler callback
75 * @private_data: private data to pass to callback functions
77 * The same IRQ source can be added only once. Adding an IRQ source
78 * indicates ownership of that IRQ source and all its IRQ types.
80 * Return: 0 on success, -errno otherwise
82 typedef int (*cgs_add_irq_source_t)(void *cgs_device, unsigned src_id,
84 cgs_irq_source_set_func_t set,
85 cgs_irq_handler_func_t handler,
89 * cgs_irq_get() - Request enabling an IRQ source and type
90 * @cgs_device: opaque device handle
91 * @src_id: interrupt source ID
92 * @type: interrupt type
94 * cgs_irq_get and cgs_irq_put calls must be balanced. They count
95 * "references" to IRQ sources.
97 * Return: 0 on success, -errno otherwise
99 typedef int (*cgs_irq_get_t)(void *cgs_device, unsigned src_id, unsigned type);
102 * cgs_irq_put() - Indicate IRQ source is no longer needed
103 * @cgs_device: opaque device handle
104 * @src_id: interrupt source ID
105 * @type: interrupt type
107 * cgs_irq_get and cgs_irq_put calls must be balanced. They count
108 * "references" to IRQ sources. Even after cgs_irq_put is called, the
109 * IRQ handler may still be called if there are more refecences to
112 * Return: 0 on success, -errno otherwise
114 typedef int (*cgs_irq_put_t)(void *cgs_device, unsigned src_id, unsigned type);
117 cgs_import_gpu_mem_t import_gpu_mem;
120 cgs_add_irq_source_t add_irq_source;
121 cgs_irq_get_t irq_get;
122 cgs_irq_put_t irq_put;
125 #define cgs_import_gpu_mem(dev,dmabuf_fd,handle) \
126 CGS_OS_CALL(import_gpu_mem,dev,dmabuf_fd,handle)
127 #define cgs_add_irq_source(dev,src_id,num_types,set,handler,private_data) \
128 CGS_OS_CALL(add_irq_source,dev,src_id,num_types,set,handler, \
130 #define cgs_irq_get(dev,src_id,type) \
131 CGS_OS_CALL(irq_get,dev,src_id,type)
132 #define cgs_irq_put(dev,src_id,type) \
133 CGS_OS_CALL(irq_put,dev,src_id,type)
135 #endif /* _CGS_LINUX_H */