mainlining shenanigans
02b6fdc2a1
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> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.