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authorChris Rorvick <chris@rorvick.com>2014-11-05 04:18:45 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-11-07 20:02:37 +0300
commitb9ec1c9da64f0c1d130beb125a916d0725363ec9 (patch)
treef5c88d4f240c12b8e0055fd22db9e1b60ef24b90 /include/linux/usb/ehci-dbgp.h
parentd9a887023076ceed7221c216627a0018ad3b86fa (diff)
downloadlinux-b9ec1c9da64f0c1d130beb125a916d0725363ec9.tar.xz
usb: Create separate header for ehci-dbgp
The FUSBH200 and FOTG210 controllers implement sufficiently EHCI- compatible debug ports to leverage ehci-dbgp from their respective drivers. Rather than including <linux/usb/ehci_def.h> header, though, they replicate the necessary declarations in their own headers. Move the ehci-dbgp stuff into its own header as a first step towards removing this redundancy. Signed-off-by: Chris Rorvick <chris@rorvick.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb/ehci-dbgp.h')
-rw-r--r--include/linux/usb/ehci-dbgp.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/include/linux/usb/ehci-dbgp.h b/include/linux/usb/ehci-dbgp.h
new file mode 100644
index 000000000000..796c1cd6f26a
--- /dev/null
+++ b/include/linux/usb/ehci-dbgp.h
@@ -0,0 +1,84 @@
+/*
+ * Standalone EHCI usb debug driver
+ *
+ * Originally written by:
+ * Eric W. Biederman" <ebiederm@xmission.com> and
+ * Yinghai Lu <yhlu.kernel@gmail.com>
+ *
+ * Changes for early/late printk and HW errata:
+ * Jason Wessel <jason.wessel@windriver.com>
+ * Copyright (C) 2009 Wind River Systems, Inc.
+ *
+ */
+
+#ifndef __LINUX_USB_EHCI_DBGP_H
+#define __LINUX_USB_EHCI_DBGP_H
+
+#include <linux/console.h>
+#include <linux/types.h>
+
+/* Appendix C, Debug port ... intended for use with special "debug devices"
+ * that can help if there's no serial console. (nonstandard enumeration.)
+ */
+struct ehci_dbg_port {
+ u32 control;
+#define DBGP_OWNER (1<<30)
+#define DBGP_ENABLED (1<<28)
+#define DBGP_DONE (1<<16)
+#define DBGP_INUSE (1<<10)
+#define DBGP_ERRCODE(x) (((x)>>7)&0x07)
+# define DBGP_ERR_BAD 1
+# define DBGP_ERR_SIGNAL 2
+#define DBGP_ERROR (1<<6)
+#define DBGP_GO (1<<5)
+#define DBGP_OUT (1<<4)
+#define DBGP_LEN(x) (((x)>>0)&0x0f)
+ u32 pids;
+#define DBGP_PID_GET(x) (((x)>>16)&0xff)
+#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
+ u32 data03;
+ u32 data47;
+ u32 address;
+#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep))
+};
+
+#ifdef CONFIG_EARLY_PRINTK_DBGP
+#include <linux/init.h>
+extern int __init early_dbgp_init(char *s);
+extern struct console early_dbgp_console;
+#endif /* CONFIG_EARLY_PRINTK_DBGP */
+
+struct usb_hcd;
+
+#ifdef CONFIG_XEN_DOM0
+extern int xen_dbgp_reset_prep(struct usb_hcd *);
+extern int xen_dbgp_external_startup(struct usb_hcd *);
+#else
+static inline int xen_dbgp_reset_prep(struct usb_hcd *hcd)
+{
+ return 1; /* Shouldn't this be 0? */
+}
+
+static inline int xen_dbgp_external_startup(struct usb_hcd *hcd)
+{
+ return -1;
+}
+#endif
+
+#ifdef CONFIG_EARLY_PRINTK_DBGP
+/* Call backs from ehci host driver to ehci debug driver */
+extern int dbgp_external_startup(struct usb_hcd *);
+extern int dbgp_reset_prep(struct usb_hcd *);
+#else
+static inline int dbgp_reset_prep(struct usb_hcd *hcd)
+{
+ return xen_dbgp_reset_prep(hcd);
+}
+
+static inline int dbgp_external_startup(struct usb_hcd *hcd)
+{
+ return xen_dbgp_external_startup(hcd);
+}
+#endif
+
+#endif /* __LINUX_USB_EHCI_DBGP_H */