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linux-next/drivers/usb/host/xhci-debugfs.h

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USB: host: Use the correct style for SPDX License Identifier This patch corrects the SPDX License Identifier style in header files related to USB host controller drivers. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used). Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Link: https://lore.kernel.org/r/20200404092135.GA4522@nishad Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-04-04 17:21:40 +08:00
/* SPDX-License-Identifier: GPL-2.0 */
usb: xhci: Add debugfs interface for xHCI driver This adds debugfs consumer for xHCI driver. The debugfs entries read all host registers, device/endpoint contexts, command ring, event ring and various endpoint rings. With these entries, users can check the registers and memory spaces used by a host during run time, or save all the information with a simple 'cp -r' for post-mortem programs. The file hierarchy looks like this. [root of debugfs] |__usb |____[e,u,o]hci <---------[root for other HCIs] |____xhci <---------------[root for xHCI] |______0000:00:14.0 <--------------[xHCI host name] |________reg-cap <--------[capability registers] |________reg-op <-------[operational registers] |________reg-runtime <-----------[runtime registers] |________reg-ext-#cap_name <----[extended capability regs] |________command-ring <-------[root for command ring] |__________cycle <------------------[ring cycle] |__________dequeue <--------[ring dequeue pointer] |__________enqueue <--------[ring enqueue pointer] |__________trbs <-------------------[ring trbs] |________event-ring <---------[root for event ring] |__________cycle <------------------[ring cycle] |__________dequeue <--------[ring dequeue pointer] |__________enqueue <--------[ring enqueue pointer] |__________trbs <-------------------[ring trbs] |________devices <------------[root for devices] |__________#slot_id <-----------[root for a device] |____________name <-----------------[device name] |____________slot-context <----------------[slot context] |____________ep-context <-----------[endpoint contexts] |____________ep#ep_index <--------[root for an endpoint] |______________cycle <------------------[ring cycle] |______________dequeue <--------[ring dequeue pointer] |______________enqueue <--------[ring enqueue pointer] |______________trbs <-------------------[ring trbs] Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-05 16:21:39 +08:00
/*
* xhci-debugfs.h - xHCI debugfs interface
*
* Copyright (C) 2017 Intel Corporation
*
* Author: Lu Baolu <baolu.lu@linux.intel.com>
*/
#ifndef __LINUX_XHCI_DEBUGFS_H
#define __LINUX_XHCI_DEBUGFS_H
#include <linux/debugfs.h>
#define DEBUGFS_NAMELEN 32
#define REG_CAPLENGTH 0x00
#define REG_HCSPARAMS1 0x04
#define REG_HCSPARAMS2 0x08
#define REG_HCSPARAMS3 0x0c
#define REG_HCCPARAMS1 0x10
#define REG_DOORBELLOFF 0x14
#define REG_RUNTIMEOFF 0x18
#define REG_HCCPARAMS2 0x1c
#define REG_USBCMD 0x00
#define REG_USBSTS 0x04
#define REG_PAGESIZE 0x08
#define REG_DNCTRL 0x14
#define REG_CRCR 0x18
#define REG_DCBAAP_LOW 0x30
#define REG_DCBAAP_HIGH 0x34
#define REG_CONFIG 0x38
#define REG_MFINDEX 0x00
#define REG_IR0_IMAN 0x20
#define REG_IR0_IMOD 0x24
#define REG_IR0_ERSTSZ 0x28
#define REG_IR0_ERSTBA_LOW 0x30
#define REG_IR0_ERSTBA_HIGH 0x34
#define REG_IR0_ERDP_LOW 0x38
#define REG_IR0_ERDP_HIGH 0x3c
#define REG_EXTCAP_USBLEGSUP 0x00
#define REG_EXTCAP_USBLEGCTLSTS 0x04
#define REG_EXTCAP_REVISION 0x00
#define REG_EXTCAP_NAME 0x04
#define REG_EXTCAP_PORTINFO 0x08
#define REG_EXTCAP_PORTTYPE 0x0c
#define REG_EXTCAP_MANTISSA1 0x10
#define REG_EXTCAP_MANTISSA2 0x14
#define REG_EXTCAP_MANTISSA3 0x18
#define REG_EXTCAP_MANTISSA4 0x1c
#define REG_EXTCAP_MANTISSA5 0x20
#define REG_EXTCAP_MANTISSA6 0x24
#define REG_EXTCAP_DBC_CAPABILITY 0x00
#define REG_EXTCAP_DBC_DOORBELL 0x04
#define REG_EXTCAP_DBC_ERSTSIZE 0x08
#define REG_EXTCAP_DBC_ERST_LOW 0x10
#define REG_EXTCAP_DBC_ERST_HIGH 0x14
#define REG_EXTCAP_DBC_ERDP_LOW 0x18
#define REG_EXTCAP_DBC_ERDP_HIGH 0x1c
#define REG_EXTCAP_DBC_CONTROL 0x20
#define REG_EXTCAP_DBC_STATUS 0x24
#define REG_EXTCAP_DBC_PORTSC 0x28
#define REG_EXTCAP_DBC_CONT_LOW 0x30
#define REG_EXTCAP_DBC_CONT_HIGH 0x34
#define REG_EXTCAP_DBC_DEVINFO1 0x38
#define REG_EXTCAP_DBC_DEVINFO2 0x3c
#define dump_register(nm) \
{ \
.name = __stringify(nm), \
.offset = REG_ ##nm, \
}
struct xhci_regset {
char name[DEBUGFS_NAMELEN];
struct debugfs_regset32 regset;
size_t nregs;
struct list_head list;
};
struct xhci_file_map {
const char *name;
int (*show)(struct seq_file *s, void *unused);
};
struct xhci_ep_priv {
char name[DEBUGFS_NAMELEN];
struct dentry *root;
};
struct xhci_slot_priv {
char name[DEBUGFS_NAMELEN];
struct dentry *root;
struct xhci_ep_priv *eps[31];
struct xhci_virt_device *dev;
};
#ifdef CONFIG_DEBUG_FS
void xhci_debugfs_init(struct xhci_hcd *xhci);
void xhci_debugfs_exit(struct xhci_hcd *xhci);
void __init xhci_debugfs_create_root(void);
void __exit xhci_debugfs_remove_root(void);
void xhci_debugfs_create_slot(struct xhci_hcd *xhci, int slot_id);
void xhci_debugfs_remove_slot(struct xhci_hcd *xhci, int slot_id);
void xhci_debugfs_create_endpoint(struct xhci_hcd *xhci,
struct xhci_virt_device *virt_dev,
int ep_index);
void xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci,
struct xhci_virt_device *virt_dev,
int ep_index);
#else
static inline void xhci_debugfs_init(struct xhci_hcd *xhci) { }
static inline void xhci_debugfs_exit(struct xhci_hcd *xhci) { }
static inline void __init xhci_debugfs_create_root(void) { }
static inline void __exit xhci_debugfs_remove_root(void) { }
static inline void xhci_debugfs_create_slot(struct xhci_hcd *x, int s) { }
static inline void xhci_debugfs_remove_slot(struct xhci_hcd *x, int s) { }
static inline void
xhci_debugfs_create_endpoint(struct xhci_hcd *xhci,
struct xhci_virt_device *virt_dev,
int ep_index) { }
static inline void
xhci_debugfs_remove_endpoint(struct xhci_hcd *xhci,
struct xhci_virt_device *virt_dev,
int ep_index) { }
#endif /* CONFIG_DEBUG_FS */
#endif /* __LINUX_XHCI_DEBUGFS_H */
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