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1 | /* SPDX-License-Identifier: GPL-2.0-only */ | |
2 | /* | |
3 | * MEN Chameleon Bus. | |
4 | * | |
5 | * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de) | |
6 | * Author: Johannes Thumshirn <johannes.thumshirn@men.de> | |
7 | */ | |
8 | #ifndef _LINUX_MCB_H | |
9 | #define _LINUX_MCB_H | |
10 | ||
11 | #include <linux/mod_devicetable.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/irqreturn.h> | |
14 | ||
15 | #define CHAMELEON_FILENAME_LEN 12 | |
16 | ||
17 | struct mcb_driver; | |
18 | struct mcb_device; | |
19 | ||
20 | /** | |
21 | * struct mcb_bus - MEN Chameleon Bus | |
22 | * | |
23 | * @dev: bus device | |
24 | * @carrier: pointer to carrier device | |
25 | * @bus_nr: mcb bus number | |
26 | * @get_irq: callback to get IRQ number | |
27 | * @revision: the FPGA's revision number | |
28 | * @model: the FPGA's model number | |
29 | * @filename: the FPGA's name | |
30 | */ | |
31 | struct mcb_bus { | |
32 | struct device dev; | |
33 | struct device *carrier; | |
34 | int bus_nr; | |
35 | u8 revision; | |
36 | char model; | |
37 | u8 minor; | |
38 | char name[CHAMELEON_FILENAME_LEN + 1]; | |
39 | int (*get_irq)(struct mcb_device *dev); | |
40 | }; | |
41 | ||
42 | static inline struct mcb_bus *to_mcb_bus(struct device *dev) | |
43 | { | |
44 | return container_of(dev, struct mcb_bus, dev); | |
45 | } | |
46 | ||
47 | /** | |
48 | * struct mcb_device - MEN Chameleon Bus device | |
49 | * | |
50 | * @dev: device in kernel representation | |
51 | * @bus: mcb bus the device is plugged to | |
52 | * @is_added: flag to check if device is added to bus | |
53 | * @driver: associated mcb_driver | |
54 | * @id: mcb device id | |
55 | * @inst: instance in Chameleon table | |
56 | * @group: group in Chameleon table | |
57 | * @var: variant in Chameleon table | |
58 | * @bar: BAR in Chameleon table | |
59 | * @rev: revision in Chameleon table | |
60 | * @irq: IRQ resource | |
61 | * @memory: memory resource | |
62 | */ | |
63 | struct mcb_device { | |
64 | struct device dev; | |
65 | struct mcb_bus *bus; | |
66 | bool is_added; | |
67 | struct mcb_driver *driver; | |
68 | u16 id; | |
69 | int inst; | |
70 | int group; | |
71 | int var; | |
72 | int bar; | |
73 | int rev; | |
74 | struct resource irq; | |
75 | struct resource mem; | |
76 | struct device *dma_dev; | |
77 | }; | |
78 | ||
79 | static inline struct mcb_device *to_mcb_device(struct device *dev) | |
80 | { | |
81 | return container_of(dev, struct mcb_device, dev); | |
82 | } | |
83 | ||
84 | /** | |
85 | * struct mcb_driver - MEN Chameleon Bus device driver | |
86 | * | |
87 | * @driver: device_driver | |
88 | * @id_table: mcb id table | |
89 | * @probe: probe callback | |
90 | * @remove: remove callback | |
91 | * @shutdown: shutdown callback | |
92 | */ | |
93 | struct mcb_driver { | |
94 | struct device_driver driver; | |
95 | const struct mcb_device_id *id_table; | |
96 | int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id); | |
97 | void (*remove)(struct mcb_device *mdev); | |
98 | void (*shutdown)(struct mcb_device *mdev); | |
99 | }; | |
100 | ||
101 | static inline struct mcb_driver *to_mcb_driver(struct device_driver *drv) | |
102 | { | |
103 | return container_of(drv, struct mcb_driver, driver); | |
104 | } | |
105 | ||
106 | static inline void *mcb_get_drvdata(struct mcb_device *dev) | |
107 | { | |
108 | return dev_get_drvdata(&dev->dev); | |
109 | } | |
110 | ||
111 | static inline void mcb_set_drvdata(struct mcb_device *dev, void *data) | |
112 | { | |
113 | dev_set_drvdata(&dev->dev, data); | |
114 | } | |
115 | ||
116 | extern int __must_check __mcb_register_driver(struct mcb_driver *drv, | |
117 | struct module *owner, | |
118 | const char *mod_name); | |
119 | #define mcb_register_driver(driver) \ | |
120 | __mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
121 | extern void mcb_unregister_driver(struct mcb_driver *driver); | |
122 | #define module_mcb_driver(__mcb_driver) \ | |
123 | module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver); | |
124 | extern void mcb_bus_add_devices(const struct mcb_bus *bus); | |
125 | extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev); | |
126 | extern struct mcb_bus *mcb_alloc_bus(struct device *carrier); | |
127 | extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus); | |
128 | extern void mcb_bus_put(struct mcb_bus *bus); | |
129 | extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus); | |
130 | extern void mcb_free_dev(struct mcb_device *dev); | |
131 | extern void mcb_release_bus(struct mcb_bus *bus); | |
132 | extern struct resource *mcb_request_mem(struct mcb_device *dev, | |
133 | const char *name); | |
134 | extern void mcb_release_mem(struct resource *mem); | |
135 | extern int mcb_get_irq(struct mcb_device *dev); | |
136 | extern struct resource *mcb_get_resource(struct mcb_device *dev, | |
137 | unsigned int type); | |
138 | ||
139 | #endif /* _LINUX_MCB_H */ |