usb_controller.h revision 192984 
1/* $FreeBSD: head/sys/dev/usb/usb_controller.h 192984 2009-05-28 17:36:36Z thompsa $ */
2/*-
3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef _USB2_CONTROLLER_H_
28#define	_USB2_CONTROLLER_H_
29
30/* defines */
31
32#define	USB_BUS_DMA_TAG_MAX 8
33
34/* structure prototypes  */
35
36struct usb_bus;
37struct usb_page;
38struct usb_pipe;
39struct usb_page_cache;
40struct usb_setup_params;
41struct usb_hw_ep_profile;
42struct usb_fs_isoc_schedule;
43struct usb_config_descriptor;
44struct usb_endpoint_descriptor;
45
46/* typedefs */
47
48typedef void (usb2_bus_mem_sub_cb_t)(struct usb_bus *bus, struct usb_page_cache *pc, struct usb_page *pg, usb2_size_t size, usb2_size_t align);
49typedef void (usb2_bus_mem_cb_t)(struct usb_bus *bus, usb2_bus_mem_sub_cb_t *scb);
50
51/*
52 * The following structure is used to define all the USB BUS
53 * callbacks.
54 */
55struct usb_bus_methods {
56
57	/* USB Device and Host mode - Mandatory */
58
59	usb2_handle_request_t *roothub_exec;
60
61	void    (*pipe_init) (struct usb_device *, struct usb_endpoint_descriptor *, struct usb_pipe *);
62	void    (*xfer_setup) (struct usb_setup_params *);
63	void    (*xfer_unsetup) (struct usb_xfer *);
64	void    (*get_dma_delay) (struct usb_bus *, uint32_t *);
65	void    (*device_suspend) (struct usb_device *);
66	void    (*device_resume) (struct usb_device *);
67	void    (*set_hw_power) (struct usb_bus *);
68
69	/*
70	 * The following flag is set if one or more control transfers are
71	 * active:
72	 */
73#define	USB_HW_POWER_CONTROL	0x01
74	/*
75	 * The following flag is set if one or more bulk transfers are
76	 * active:
77	 */
78#define	USB_HW_POWER_BULK	0x02
79	/*
80	 * The following flag is set if one or more interrupt transfers are
81	 * active:
82	 */
83#define	USB_HW_POWER_INTERRUPT	0x04
84	/*
85	 * The following flag is set if one or more isochronous transfers
86	 * are active:
87	 */
88#define	USB_HW_POWER_ISOC	0x08
89	/*
90	 * The following flag is set if one or more non-root-HUB devices
91	 * are present on the given USB bus:
92	 */
93#define	USB_HW_POWER_NON_ROOT_HUB 0x10
94
95	/* USB Device mode only - Mandatory */
96
97	void    (*get_hw_ep_profile) (struct usb_device *udev, const struct usb_hw_ep_profile **ppf, uint8_t ep_addr);
98	void    (*set_stall) (struct usb_device *udev, struct usb_xfer *xfer, struct usb_pipe *pipe);
99	void    (*clear_stall) (struct usb_device *udev, struct usb_pipe *pipe);
100
101};
102
103/*
104 * The following structure is used to define all the USB pipe
105 * callbacks.
106 */
107struct usb_pipe_methods {
108
109	/* Mandatory USB Device and Host mode callbacks: */
110
111	usb2_callback_t *open;
112	usb2_callback_t *close;
113
114	usb2_callback_t *enter;
115	usb2_callback_t *start;
116
117	/* Optional */
118
119	void   *info;
120};
121
122/*
123 * The following structure keeps information about what a hardware USB
124 * endpoint supports.
125 */
126struct usb_hw_ep_profile {
127	uint16_t max_in_frame_size;	/* IN-token direction */
128	uint16_t max_out_frame_size;	/* OUT-token direction */
129	uint8_t	is_simplex:1;
130	uint8_t	support_multi_buffer:1;
131	uint8_t	support_bulk:1;
132	uint8_t	support_control:1;
133	uint8_t	support_interrupt:1;
134	uint8_t	support_isochronous:1;
135	uint8_t	support_in:1;		/* IN-token is supported */
136	uint8_t	support_out:1;		/* OUT-token is supported */
137};
138
139/*
140 * The following structure is used when trying to allocate hardware
141 * endpoints for an USB configuration in USB device side mode.
142 */
143struct usb_hw_ep_scratch_sub {
144	const struct usb_hw_ep_profile *pf;
145	uint16_t max_frame_size;
146	uint8_t	hw_endpoint_out;
147	uint8_t	hw_endpoint_in;
148	uint8_t	needs_ep_type;
149	uint8_t	needs_in:1;
150	uint8_t	needs_out:1;
151};
152
153/*
154 * The following structure is used when trying to allocate hardware
155 * endpoints for an USB configuration in USB device side mode.
156 */
157struct usb_hw_ep_scratch {
158	struct usb_hw_ep_scratch_sub ep[USB_EP_MAX];
159	struct usb_hw_ep_scratch_sub *ep_max;
160	struct usb_config_descriptor *cd;
161	struct usb_device *udev;
162	struct usb_bus_methods *methods;
163	uint8_t	bmOutAlloc[(USB_EP_MAX + 15) / 16];
164	uint8_t	bmInAlloc[(USB_EP_MAX + 15) / 16];
165};
166
167/*
168 * The following structure is used when generating USB descriptors
169 * from USB templates.
170 */
171struct usb_temp_setup {
172	void   *buf;
173	usb2_size_t size;
174	enum usb_dev_speed	usb_speed;
175	uint8_t	self_powered;
176	uint8_t	bNumEndpoints;
177	uint8_t	bInterfaceNumber;
178	uint8_t	bAlternateSetting;
179	uint8_t	bConfigurationValue;
180	usb2_error_t err;
181};
182
183/* prototypes */
184
185void	usb2_bus_mem_flush_all(struct usb_bus *bus, usb2_bus_mem_cb_t *cb);
186uint8_t	usb2_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat, usb2_bus_mem_cb_t *cb);
187void	usb2_bus_mem_free_all(struct usb_bus *bus, usb2_bus_mem_cb_t *cb);
188uint16_t usb2_isoc_time_expand(struct usb_bus *bus, uint16_t isoc_time_curr);
189uint16_t usb2_fs_isoc_schedule_isoc_time_expand(struct usb_device *udev, struct usb_fs_isoc_schedule **pp_start, struct usb_fs_isoc_schedule **pp_end, uint16_t isoc_time);
190uint8_t	usb2_fs_isoc_schedule_alloc(struct usb_fs_isoc_schedule *fss, uint8_t *pstart, uint16_t len);
191
192#endif					/* _USB2_CONTROLLER_H_ */
193