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b9ec1c9d CR |
1 | /* |
2 | * Standalone EHCI usb debug driver | |
3 | * | |
4 | * Originally written by: | |
5 | * Eric W. Biederman" <ebiederm@xmission.com> and | |
6 | * Yinghai Lu <yhlu.kernel@gmail.com> | |
7 | * | |
8 | * Changes for early/late printk and HW errata: | |
9 | * Jason Wessel <jason.wessel@windriver.com> | |
10 | * Copyright (C) 2009 Wind River Systems, Inc. | |
11 | * | |
12 | */ | |
13 | ||
14 | #ifndef __LINUX_USB_EHCI_DBGP_H | |
15 | #define __LINUX_USB_EHCI_DBGP_H | |
16 | ||
17 | #include <linux/console.h> | |
18 | #include <linux/types.h> | |
19 | ||
20 | /* Appendix C, Debug port ... intended for use with special "debug devices" | |
21 | * that can help if there's no serial console. (nonstandard enumeration.) | |
22 | */ | |
23 | struct ehci_dbg_port { | |
24 | u32 control; | |
25 | #define DBGP_OWNER (1<<30) | |
26 | #define DBGP_ENABLED (1<<28) | |
27 | #define DBGP_DONE (1<<16) | |
28 | #define DBGP_INUSE (1<<10) | |
29 | #define DBGP_ERRCODE(x) (((x)>>7)&0x07) | |
30 | # define DBGP_ERR_BAD 1 | |
31 | # define DBGP_ERR_SIGNAL 2 | |
32 | #define DBGP_ERROR (1<<6) | |
33 | #define DBGP_GO (1<<5) | |
34 | #define DBGP_OUT (1<<4) | |
35 | #define DBGP_LEN(x) (((x)>>0)&0x0f) | |
36 | u32 pids; | |
37 | #define DBGP_PID_GET(x) (((x)>>16)&0xff) | |
38 | #define DBGP_PID_SET(data, tok) (((data)<<8)|(tok)) | |
39 | u32 data03; | |
40 | u32 data47; | |
41 | u32 address; | |
42 | #define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep)) | |
43 | }; | |
44 | ||
45 | #ifdef CONFIG_EARLY_PRINTK_DBGP | |
35a27eab | 46 | extern int early_dbgp_init(char *s); |
b9ec1c9d CR |
47 | extern struct console early_dbgp_console; |
48 | #endif /* CONFIG_EARLY_PRINTK_DBGP */ | |
49 | ||
50 | struct usb_hcd; | |
51 | ||
52 | #ifdef CONFIG_XEN_DOM0 | |
53 | extern int xen_dbgp_reset_prep(struct usb_hcd *); | |
54 | extern int xen_dbgp_external_startup(struct usb_hcd *); | |
55 | #else | |
56 | static inline int xen_dbgp_reset_prep(struct usb_hcd *hcd) | |
57 | { | |
58 | return 1; /* Shouldn't this be 0? */ | |
59 | } | |
60 | ||
61 | static inline int xen_dbgp_external_startup(struct usb_hcd *hcd) | |
62 | { | |
63 | return -1; | |
64 | } | |
65 | #endif | |
66 | ||
67 | #ifdef CONFIG_EARLY_PRINTK_DBGP | |
68 | /* Call backs from ehci host driver to ehci debug driver */ | |
69 | extern int dbgp_external_startup(struct usb_hcd *); | |
70 | extern int dbgp_reset_prep(struct usb_hcd *); | |
71 | #else | |
72 | static inline int dbgp_reset_prep(struct usb_hcd *hcd) | |
73 | { | |
74 | return xen_dbgp_reset_prep(hcd); | |
75 | } | |
76 | ||
77 | static inline int dbgp_external_startup(struct usb_hcd *hcd) | |
78 | { | |
79 | return xen_dbgp_external_startup(hcd); | |
80 | } | |
81 | #endif | |
82 | ||
83 | #endif /* __LINUX_USB_EHCI_DBGP_H */ |