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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1e55b609 TW |
2 | /* |
3 | * Copyright (c) 2013-2016, Intel Corporation. All rights reserved. | |
4 | */ | |
e5354107 SO |
5 | #ifndef _LINUX_MEI_CL_BUS_H |
6 | #define _LINUX_MEI_CL_BUS_H | |
7 | ||
8 | #include <linux/device.h> | |
9 | #include <linux/uuid.h> | |
1f180359 | 10 | #include <linux/mod_devicetable.h> |
e5354107 SO |
11 | |
12 | struct mei_cl_device; | |
512f64d9 | 13 | struct mei_device; |
e5354107 | 14 | |
7c7a6077 | 15 | typedef void (*mei_cldev_cb_t)(struct mei_cl_device *cldev); |
dbac993f TW |
16 | |
17 | /** | |
18 | * struct mei_cl_device - MEI device handle | |
19 | * An mei_cl_device pointer is returned from mei_add_device() | |
20 | * and links MEI bus clients to their actual ME host client pointer. | |
21 | * Drivers for MEI devices will get an mei_cl_device pointer | |
22 | * when being probed and shall use it for doing ME bus I/O. | |
23 | * | |
0ff0a8d8 | 24 | * @bus_list: device on the bus list |
512f64d9 | 25 | * @bus: parent mei device |
dbac993f TW |
26 | * @dev: linux driver model device pointer |
27 | * @me_cl: me client | |
28 | * @cl: mei client | |
29 | * @name: device name | |
7c7a6077 AU |
30 | * @rx_work: async work to execute Rx event callback |
31 | * @rx_cb: Drivers register this callback to get asynchronous ME | |
32 | * Rx buffer pending notifications. | |
33 | * @notif_work: async work to execute FW notif event callback | |
34 | * @notif_cb: Drivers register this callback to get asynchronous ME | |
35 | * FW notification pending notifications. | |
71ce7891 TW |
36 | * |
37 | * @do_match: wheather device can be matched with a driver | |
0ff0a8d8 | 38 | * @is_added: device is already scanned |
dbac993f TW |
39 | * @priv_data: client private data |
40 | */ | |
41 | struct mei_cl_device { | |
0ff0a8d8 | 42 | struct list_head bus_list; |
512f64d9 | 43 | struct mei_device *bus; |
dbac993f TW |
44 | struct device dev; |
45 | ||
46 | struct mei_me_client *me_cl; | |
47 | struct mei_cl *cl; | |
48 | char name[MEI_CL_NAME_SIZE]; | |
49 | ||
7c7a6077 AU |
50 | struct work_struct rx_work; |
51 | mei_cldev_cb_t rx_cb; | |
52 | struct work_struct notif_work; | |
53 | mei_cldev_cb_t notif_cb; | |
71ce7891 TW |
54 | |
55 | unsigned int do_match:1; | |
0ff0a8d8 | 56 | unsigned int is_added:1; |
dbac993f TW |
57 | |
58 | void *priv_data; | |
59 | }; | |
60 | ||
32ea33a0 TW |
61 | #define to_mei_cl_device(d) container_of(d, struct mei_cl_device, dev) |
62 | ||
e5354107 SO |
63 | struct mei_cl_driver { |
64 | struct device_driver driver; | |
65 | const char *name; | |
66 | ||
67 | const struct mei_cl_device_id *id_table; | |
68 | ||
89391382 | 69 | int (*probe)(struct mei_cl_device *cldev, |
e5354107 | 70 | const struct mei_cl_device_id *id); |
89391382 | 71 | int (*remove)(struct mei_cl_device *cldev); |
e5354107 SO |
72 | }; |
73 | ||
d49dc5e7 TW |
74 | int __mei_cldev_driver_register(struct mei_cl_driver *cldrv, |
75 | struct module *owner); | |
76 | #define mei_cldev_driver_register(cldrv) \ | |
77 | __mei_cldev_driver_register(cldrv, THIS_MODULE) | |
333e4ee0 | 78 | |
d49dc5e7 | 79 | void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv); |
333e4ee0 | 80 | |
5be149bd TW |
81 | /** |
82 | * module_mei_cl_driver - Helper macro for registering mei cl driver | |
83 | * | |
076802d0 | 84 | * @__mei_cldrv: mei_cl_driver structure |
5be149bd TW |
85 | * |
86 | * Helper macro for mei cl drivers which do not do anything special in module | |
87 | * init/exit, for eliminating a boilerplate code. | |
88 | */ | |
89 | #define module_mei_cl_driver(__mei_cldrv) \ | |
90 | module_driver(__mei_cldrv, \ | |
91 | mei_cldev_driver_register,\ | |
92 | mei_cldev_driver_unregister) | |
93 | ||
d49dc5e7 | 94 | ssize_t mei_cldev_send(struct mei_cl_device *cldev, u8 *buf, size_t length); |
076802d0 AU |
95 | ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length); |
96 | ssize_t mei_cldev_recv_nonblock(struct mei_cl_device *cldev, u8 *buf, | |
97 | size_t length); | |
3e833295 | 98 | |
7c7a6077 AU |
99 | int mei_cldev_register_rx_cb(struct mei_cl_device *cldev, mei_cldev_cb_t rx_cb); |
100 | int mei_cldev_register_notif_cb(struct mei_cl_device *cldev, | |
101 | mei_cldev_cb_t notif_cb); | |
3e833295 | 102 | |
baeacd03 TW |
103 | const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev); |
104 | u8 mei_cldev_ver(const struct mei_cl_device *cldev); | |
105 | ||
d49dc5e7 TW |
106 | void *mei_cldev_get_drvdata(const struct mei_cl_device *cldev); |
107 | void mei_cldev_set_drvdata(struct mei_cl_device *cldev, void *data); | |
aa6aef21 | 108 | |
d49dc5e7 TW |
109 | int mei_cldev_enable(struct mei_cl_device *cldev); |
110 | int mei_cldev_disable(struct mei_cl_device *cldev); | |
01a14ede | 111 | bool mei_cldev_enabled(struct mei_cl_device *cldev); |
e46980a1 | 112 | |
e5354107 | 113 | #endif /* _LINUX_MEI_CL_BUS_H */ |