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04679b34 TH |
1 | /* |
2 | * Copyright (C) 2003-2008 Takahiro Hirofuchi | |
0775a9cb | 3 | * Copyright (C) 2015 Nobuo Iwata |
04679b34 TH |
4 | * |
5 | * This is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
04679b34 TH |
10 | */ |
11 | ||
306dac69 TK |
12 | #ifndef __USBIP_VHCI_H |
13 | #define __USBIP_VHCI_H | |
14 | ||
7aaacb43 | 15 | #include <linux/device.h> |
16 | #include <linux/list.h> | |
17 | #include <linux/spinlock.h> | |
18 | #include <linux/sysfs.h> | |
19 | #include <linux/types.h> | |
20 | #include <linux/usb.h> | |
27729aad | 21 | #include <linux/usb/hcd.h> |
7aaacb43 | 22 | #include <linux/wait.h> |
04679b34 | 23 | |
04679b34 TH |
24 | struct vhci_device { |
25 | struct usb_device *udev; | |
26 | ||
27 | /* | |
28 | * devid specifies a remote usb device uniquely instead | |
29 | * of combination of busnum and devnum. | |
30 | */ | |
31 | __u32 devid; | |
32 | ||
33 | /* speed of a remote device */ | |
34 | enum usb_device_speed speed; | |
35 | ||
ddbc9bc9 | 36 | /* vhci root-hub port to which this device is attached */ |
04679b34 TH |
37 | __u32 rhport; |
38 | ||
39 | struct usbip_device ud; | |
40 | ||
04679b34 TH |
41 | /* lock for the below link lists */ |
42 | spinlock_t priv_lock; | |
43 | ||
44 | /* vhci_priv is linked to one of them. */ | |
45 | struct list_head priv_tx; | |
46 | struct list_head priv_rx; | |
47 | ||
48 | /* vhci_unlink is linked to one of them */ | |
49 | struct list_head unlink_tx; | |
50 | struct list_head unlink_rx; | |
51 | ||
52 | /* vhci_tx thread sleeps for this queue */ | |
53 | wait_queue_head_t waitq_tx; | |
54 | }; | |
55 | ||
04679b34 TH |
56 | /* urb->hcpriv, use container_of() */ |
57 | struct vhci_priv { | |
58 | unsigned long seqnum; | |
59 | struct list_head list; | |
60 | ||
61 | struct vhci_device *vdev; | |
62 | struct urb *urb; | |
63 | }; | |
64 | ||
04679b34 TH |
65 | struct vhci_unlink { |
66 | /* seqnum of this request */ | |
67 | unsigned long seqnum; | |
68 | ||
69 | struct list_head list; | |
70 | ||
71 | /* seqnum of the unlink target */ | |
72 | unsigned long unlink_seqnum; | |
73 | }; | |
74 | ||
1132b9aa | 75 | /* Number of supported ports. Value has an upperbound of USB_MAXCHILDREN */ |
0775a9cb NI |
76 | #ifdef CONFIG_USBIP_VHCI_HC_PORTS |
77 | #define VHCI_HC_PORTS CONFIG_USBIP_VHCI_HC_PORTS | |
78 | #else | |
79 | #define VHCI_HC_PORTS 8 | |
80 | #endif | |
81 | ||
82 | #ifdef CONFIG_USBIP_VHCI_NR_HCS | |
83 | #define VHCI_NR_HCS CONFIG_USBIP_VHCI_NR_HCS | |
84 | #else | |
85 | #define VHCI_NR_HCS 1 | |
86 | #endif | |
87 | ||
88 | #define MAX_STATUS_NAME 16 | |
04679b34 TH |
89 | |
90 | /* for usb_bus.hcpriv */ | |
91 | struct vhci_hcd { | |
ddbc9bc9 | 92 | spinlock_t lock; |
04679b34 | 93 | |
0775a9cb | 94 | u32 port_status[VHCI_HC_PORTS]; |
04679b34 | 95 | |
ddbc9bc9 | 96 | unsigned resuming:1; |
97 | unsigned long re_timeout; | |
04679b34 TH |
98 | |
99 | atomic_t seqnum; | |
100 | ||
101 | /* | |
102 | * NOTE: | |
103 | * wIndex shows the port number and begins from 1. | |
104 | * But, the index of this array begins from 0. | |
105 | */ | |
0775a9cb | 106 | struct vhci_device vdev[VHCI_HC_PORTS]; |
04679b34 TH |
107 | }; |
108 | ||
0775a9cb NI |
109 | extern int vhci_num_controllers; |
110 | extern struct platform_device **vhci_pdevs; | |
111 | extern struct attribute_group vhci_attr_group; | |
04679b34 | 112 | |
04679b34 | 113 | /* vhci_hcd.c */ |
0775a9cb NI |
114 | void rh_port_connect(struct vhci_device *vdev, enum usb_device_speed speed); |
115 | ||
116 | /* vhci_sysfs.c */ | |
117 | int vhci_init_attr_group(void); | |
118 | void vhci_finish_attr_group(void); | |
04679b34 | 119 | |
fc184a35 | 120 | /* vhci_rx.c */ |
ddbc9bc9 | 121 | struct urb *pickup_urb_and_free_priv(struct vhci_device *vdev, __u32 seqnum); |
fc184a35 | 122 | int vhci_rx_loop(void *data); |
b92a5e23 | 123 | |
fc184a35 | 124 | /* vhci_tx.c */ |
125 | int vhci_tx_loop(void *data); | |
04679b34 | 126 | |
0775a9cb NI |
127 | static inline __u32 port_to_rhport(__u32 port) |
128 | { | |
129 | return port % VHCI_HC_PORTS; | |
130 | } | |
131 | ||
132 | static inline int port_to_pdev_nr(__u32 port) | |
04679b34 | 133 | { |
0775a9cb | 134 | return port / VHCI_HC_PORTS; |
04679b34 TH |
135 | } |
136 | ||
137 | static inline struct vhci_hcd *hcd_to_vhci(struct usb_hcd *hcd) | |
138 | { | |
139 | return (struct vhci_hcd *) (hcd->hcd_priv); | |
140 | } | |
141 | ||
0775a9cb NI |
142 | static inline struct device *hcd_dev(struct usb_hcd *hcd) |
143 | { | |
144 | return (hcd)->self.controller; | |
145 | } | |
146 | ||
147 | static inline const char *hcd_name(struct usb_hcd *hcd) | |
148 | { | |
149 | return (hcd)->self.bus_name; | |
150 | } | |
151 | ||
04679b34 TH |
152 | static inline struct usb_hcd *vhci_to_hcd(struct vhci_hcd *vhci) |
153 | { | |
154 | return container_of((void *) vhci, struct usb_hcd, hcd_priv); | |
155 | } | |
156 | ||
0775a9cb | 157 | static inline struct vhci_hcd *vdev_to_vhci(struct vhci_device *vdev) |
04679b34 | 158 | { |
0775a9cb NI |
159 | return container_of( |
160 | (void *)(vdev - vdev->rhport), struct vhci_hcd, vdev); | |
04679b34 | 161 | } |
306dac69 TK |
162 | |
163 | #endif /* __USBIP_VHCI_H */ |