Alex Williamson a5459cfece iommu/vt-d: Make use of IOMMU sysfs support ... Register our DRHD IOMMUs, cross link devices, and provide a base set of attributes for the IOMMU. Note that IRQ remapping support parses the DMAR table very early in boot, well before the iommu_class can reasonably be setup, so our registration is split between intel_iommu_init(), which occurs later, and alloc_iommu(), which typically occurs much earlier, but may happen at any time later with IOMMU hot-add support. On a typical desktop system, this provides the following (pruned): $ find /sys | grep dmar /sys/devices/virtual/iommu/dmar0 /sys/devices/virtual/iommu/dmar0/devices /sys/devices/virtual/iommu/dmar0/devices/0000:00:02.0 /sys/devices/virtual/iommu/dmar0/intel-iommu /sys/devices/virtual/iommu/dmar0/intel-iommu/cap /sys/devices/virtual/iommu/dmar0/intel-iommu/ecap /sys/devices/virtual/iommu/dmar0/intel-iommu/address /sys/devices/virtual/iommu/dmar0/intel-iommu/version /sys/devices/virtual/iommu/dmar1 /sys/devices/virtual/iommu/dmar1/devices /sys/devices/virtual/iommu/dmar1/devices/0000:00:00.0 /sys/devices/virtual/iommu/dmar1/devices/0000:00:01.0 /sys/devices/virtual/iommu/dmar1/devices/0000:00:16.0 /sys/devices/virtual/iommu/dmar1/devices/0000:00:1a.0 /sys/devices/virtual/iommu/dmar1/devices/0000:00:1b.0 /sys/devices/virtual/iommu/dmar1/devices/0000:00:1c.0 ... /sys/devices/virtual/iommu/dmar1/intel-iommu /sys/devices/virtual/iommu/dmar1/intel-iommu/cap /sys/devices/virtual/iommu/dmar1/intel-iommu/ecap /sys/devices/virtual/iommu/dmar1/intel-iommu/address /sys/devices/virtual/iommu/dmar1/intel-iommu/version /sys/class/iommu/dmar0 /sys/class/iommu/dmar1 (devices also link back to the dmar units) This makes address, version, capabilities, and extended capabilities available, just like printed on boot. I've tried not to duplicate data that can be found in the DMAR table, with the exception of the address, which provides an easy way to associate the sysfs device with a DRHD entry in the DMAR. It's tempting to add scopes and RMRR data here, but the full DMAR table is already exposed under /sys/firmware/ and therefore already provides a way for userspace to learn such details. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>		2014-07-04 12:35:59 +02:00
..
configfs-spear-pcie-gadget
configfs-usb-gadget	usb: gadget: configfs: OS Extended Properties descriptors support	2014-05-14 09:39:51 -05:00
configfs-usb-gadget-acm	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-ecm	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-eem	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-ffs	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-loopback	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-mass-storage	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-ncm	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-obex	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-phonet	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-rndis	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-serial	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-sourcesink	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
configfs-usb-gadget-subset	Documentation: fix multiple typo occurences s/KenelVersion/KernelVersion/	2014-01-29 16:22:40 -08:00
debugfs-driver-genwqe	GenWQE Debugfs interfaces	2013-12-18 16:51:15 -08:00
debugfs-ec
debugfs-ideapad
debugfs-olpc
debugfs-pfo-nx-crypto
debugfs-pktcdvd
dev-kmsg
evm
ima_policy	ima: audit log files opened with O_DIRECT flag	2014-06-03 14:21:50 -05:00
procfs-diskstats
pstore
sysfs-ata
sysfs-block
sysfs-block-bcache
sysfs-block-dm
sysfs-block-rssd
sysfs-block-zram	zram: make compression algorithm selection possible	2014-04-07 16:36:01 -07:00
sysfs-bus-acpi
sysfs-bus-bcma
sysfs-bus-css
sysfs-bus-event_source-devices-events	powerpc/perf: Make some new raw event codes available in sysfs	2014-03-24 09:48:23 +11:00
sysfs-bus-event_source-devices-format
sysfs-bus-event_source-devices-hv_24x7	powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes	2014-03-24 09:48:33 +11:00
sysfs-bus-event_source-devices-hv_gpci	powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes	2014-03-24 09:48:33 +11:00
sysfs-bus-fcoe
sysfs-bus-hsi
sysfs-bus-i2c-devices-fsa9480
sysfs-bus-i2c-devices-hm6352
sysfs-bus-i2c-devices-lm3533
sysfs-bus-iio	iio: Add ABI documentation for illuminance	2014-05-03 11:45:26 +01:00
sysfs-bus-iio-frequency-ad9523
sysfs-bus-iio-frequency-adf4350
sysfs-bus-iio-light-lm3533-als
sysfs-bus-iio-mpu6050
sysfs-bus-iio-proximity-as3935	iio: Add AS3935 lightning sensor support	2014-03-16 18:00:32 +00:00
sysfs-bus-mdio	net: phy: expose phydev->has_fixups to sysfs	2014-02-12 19:08:49 -05:00
sysfs-bus-media
sysfs-bus-mei
sysfs-bus-pci	Merge branches 'pci/hotplug', 'pci/pci_is_bridge' and 'pci/virtualization' into next	2014-05-28 16:21:07 -06:00
sysfs-bus-pci-devices-cciss
sysfs-bus-pci-drivers-ehci_hcd
sysfs-bus-rbd	rbd: add support for single-major device number allocation scheme	2013-12-31 20:31:59 +02:00
sysfs-bus-rpmsg
sysfs-bus-umc
sysfs-bus-usb	usb: core: allow a reference device for new_id	2014-01-10 16:54:35 -08:00
sysfs-bus-usb-devices-usbsevseg
sysfs-c2port
sysfs-cfq-target-latency
sysfs-class
sysfs-class-backlight-driver-adp8870
sysfs-class-backlight-driver-lm3533
sysfs-class-bdi
sysfs-class-devfreq
sysfs-class-extcon
sysfs-class-iommu	iommu: Add sysfs support for IOMMUs	2014-07-04 12:35:59 +02:00
sysfs-class-iommu-intel-iommu	iommu/vt-d: Make use of IOMMU sysfs support	2014-07-04 12:35:59 +02:00
sysfs-class-lcd
sysfs-class-led
sysfs-class-led-driver-lm3533
sysfs-class-mic.txt	misc: mic: Enable OSPM suspend and resume support.	2013-10-05 18:01:42 -07:00
sysfs-class-mtd	mtd: add MTD_MLCNANDFLASH case for mtd_type_show()	2013-10-27 16:27:06 -07:00
sysfs-class-net	net: sysfs: add missing phys_port_id documentation	2014-05-26 01:01:47 -04:00
sysfs-class-net-batman-adv	batman-adv: update email address for Marek Lindner	2013-10-19 14:53:48 +02:00
sysfs-class-net-cdc_ncm	net: cdc_ncm: document the sysfs API	2014-06-02 16:01:31 -07:00
sysfs-class-net-grcan
sysfs-class-net-mesh	batman-adv: Modified forwarding behaviour for multicast packets	2014-03-22 09:18:57 +01:00
sysfs-class-net-queues	net: sysfs: add documentation entries for /sys/class/<iface>/queues	2014-05-26 01:01:47 -04:00
sysfs-class-net-statistics	net: sysfs: document /sys/class/net/statistics/*	2014-05-26 01:02:20 -04:00
sysfs-class-pktcdvd
sysfs-class-power
sysfs-class-powercap	PowerCap: Documentation	2013-10-17 00:36:06 +02:00
sysfs-class-pwm
sysfs-class-rc	[media] rc: add wakeup_protocols sysfs file	2014-03-11 13:28:20 -03:00
sysfs-class-regulator
sysfs-class-rtc-rtc0-device-rtc_calibration
sysfs-class-scsi_host	[SCSI] hpsa: allow user to disable accelerated i/o path	2014-03-15 10:19:07 -07:00
sysfs-class-uwb_rc
sysfs-class-uwb_rc-wusbhc
sysfs-dev
sysfs-devices
sysfs-devices-edac
sysfs-devices-firmware_node
sysfs-devices-lpss_ltr
sysfs-devices-memory
sysfs-devices-mmc
sysfs-devices-online
sysfs-devices-platform-_UDC_-gadget
sysfs-devices-platform-docg3
sysfs-devices-platform-sh_mobile_lcdc_fb
sysfs-devices-power	PM / wakeup: Correct presence vs. emptiness of wakeup_* attributes	2014-04-07 14:18:24 +02:00
sysfs-devices-power_resources_D0
sysfs-devices-power_resources_D1
sysfs-devices-power_resources_D2
sysfs-devices-power_resources_D3hot
sysfs-devices-power_resources_wakeup
sysfs-devices-power_state
sysfs-devices-real_power_state
sysfs-devices-resource_in_use
sysfs-devices-soc
sysfs-devices-sun
sysfs-devices-system-cpu	cpufreq: Make linux-pm@vger.kernel.org official mailing list	2014-05-01 01:15:32 +02:00
sysfs-devices-system-ibm-rtl
sysfs-devices-system-xen_cpu
sysfs-driver-genwqe	GenWQE Sysfs interfaces	2013-12-18 16:51:15 -08:00
sysfs-driver-hid
sysfs-driver-hid-lenovo-tpkbd
sysfs-driver-hid-logitech-lg4ff
sysfs-driver-hid-multitouch
sysfs-driver-hid-picolcd
sysfs-driver-hid-prodikeys
sysfs-driver-hid-roccat-arvo
sysfs-driver-hid-roccat-isku
sysfs-driver-hid-roccat-kone
sysfs-driver-hid-roccat-koneplus
sysfs-driver-hid-roccat-konepure
sysfs-driver-hid-roccat-kovaplus
sysfs-driver-hid-roccat-lua
sysfs-driver-hid-roccat-pyra
sysfs-driver-hid-roccat-ryos	HID: roccat: add support for Ryos MK keyboards	2013-10-30 14:17:31 +01:00
sysfs-driver-hid-roccat-savu
sysfs-driver-hid-srws1
sysfs-driver-hid-wiimote	HID: wiimote: add pro-controller analog stick calibration	2013-10-30 14:13:29 +01:00
sysfs-driver-intel-rapid-start
sysfs-driver-ppi
sysfs-driver-samsung-laptop
sysfs-driver-sunxi-sid	ARM: sunxi: Initial support for Allwinner's Security ID fuses	2013-09-26 13:47:36 -07:00
sysfs-driver-wacom
sysfs-driver-xen-blkback
sysfs-driver-xen-blkfront
sysfs-firmware-acpi
sysfs-firmware-dmi
sysfs-firmware-efi	efi: Export more EFI table variables to sysfs	2013-12-21 15:29:36 +00:00
sysfs-firmware-efi-runtime-map	efi: Export EFI runtime memory mapping to sysfs	2013-12-21 15:29:36 +00:00
sysfs-firmware-gsmi
sysfs-firmware-log
sysfs-firmware-memmap
sysfs-firmware-ofw	of: Make device nodes kobjects so they show up in sysfs	2014-03-11 20:48:26 +00:00
sysfs-firmware-sfi
sysfs-firmware-sgi_uv
sysfs-fs-ext4
sysfs-fs-f2fs	f2fs: add missing documentation for dir_level	2014-03-20 22:10:10 +09:00
sysfs-gpio
sysfs-i2c-bmp085
sysfs-ibft
sysfs-kernel-boot_params	x86: Export x86 boot_params to sysfs	2013-12-29 13:09:07 +00:00
sysfs-kernel-fscaps
sysfs-kernel-iommu_groups
sysfs-kernel-mm
sysfs-kernel-mm-hugepages
sysfs-kernel-mm-ksm
sysfs-kernel-slab
sysfs-kernel-uids
sysfs-kernel-vmcoreinfo	kdump: add /sys/kernel/vmcoreinfo ABI documentation	2014-01-23 16:37:03 -08:00
sysfs-memory-page-offline
sysfs-module	Use 'E' instead of 'X' for unsigned module taint flag.	2014-03-31 14:52:43 +10:30
sysfs-ocfs2
sysfs-platform-asus-laptop
sysfs-platform-asus-wmi
sysfs-platform-at91
sysfs-platform-brcmstb-gisb-arb	Documentation: sysfs: add Broadcom GISB arbiter sysfs properties	2014-05-24 00:58:44 +02:00
sysfs-platform-chipidea-usb-otg	Documentation: ABI: usb: sysfs Description for chipidea USB OTG HNP and SRP	2014-04-24 12:56:35 -07:00
sysfs-platform-eeepc-laptop
sysfs-platform-ideapad-laptop
sysfs-platform-kim
sysfs-platform-msi-laptop
sysfs-platform-tahvo-usb	usb: omap1: Tahvo USB transceiver driver	2013-12-06 14:46:32 -06:00
sysfs-platform-ts5500
sysfs-power	PM / sleep: Introduce command line argument for sleep state enumeration	2014-05-26 13:40:59 +02:00
sysfs-pps
sysfs-profiling
sysfs-ptp	ptp: expose the programmable pins via sysfs	2014-03-21 14:21:14 -04:00
sysfs-tty	Revert "tty: Set correct tty name in 'active' sysfs attribute"	2014-02-22 14:31:04 -08:00
sysfs-wusb_cbaf