FM / linux

/usr/src/linux-headers-5.15.0-190/include/linux/

/usr/src/linux-headers-5.15.0-190/include/linux

Name	Size	Mode	Actions
amba/	-	0755	rm
atomic/	-	0755	rm
avf/	-	0755	rm
bcma/	-	0755	rm
byteorder/	-	0755	rm
can/	-	0755	rm
ceph/	-	0755	rm
clk/	-	0755	rm
crush/	-	0755	rm
decompress/	-	0755	rm
device/	-	0755	rm
dma/	-	0755	rm
dsa/	-	0755	rm
extcon/	-	0755	rm
firmware/	-	0755	rm
fpga/	-	0755	rm
fsl/	-	0755	rm
gpio/	-	0755	rm
greybus/	-	0755	rm
hsi/	-	0755	rm
i3c/	-	0755	rm
iio/	-	0755	rm
input/	-	0755	rm
irqchip/	-	0755	rm
isdn/	-	0755	rm
lockd/	-	0755	rm
mailbox/	-	0755	rm
mdio/	-	0755	rm
mfd/	-	0755	rm
mlx4/	-	0755	rm
mlx5/	-	0755	rm
mmc/	-	0755	rm
mtd/	-	0755	rm
mux/	-	0755	rm
net/	-	0755	rm
netfilter/	-	0755	rm
netfilter_arp/	-	0755	rm
netfilter_bridge/	-	0755	rm
netfilter_ipv4/	-	0755	rm
netfilter_ipv6/	-	0755	rm
pcs/	-	0755	rm
perf/	-	0755	rm
phy/	-	0755	rm
pinctrl/	-	0755	rm
platform_data/	-	0755	rm
power/	-	0755	rm
qed/	-	0755	rm
raid/	-	0755	rm
regulator/	-	0755	rm
remoteproc/	-	0755	rm
reset/	-	0755	rm
rpmsg/	-	0755	rm
rtc/	-	0755	rm
sched/	-	0755	rm
soc/	-	0755	rm
soundwire/	-	0755	rm
spi/	-	0755	rm
ssb/	-	0755	rm
sunrpc/	-	0755	rm
surface_aggregator/	-	0755	rm
ulpi/	-	0755	rm
unaligned/	-	0755	rm
usb/	-	0755	rm
8250_pci.h	1038	0644	edit dl rm
a.out.h	354	0644	edit dl rm
acct.h	2551	0644	edit dl rm
acpi.h	40902	0644	edit dl rm
acpi_dma.h	3154	0644	edit dl rm
acpi_iort.h	2403	0644	edit dl rm
acpi_mdio.h	819	0644	edit dl rm
acpi_pmtmr.h	674	0644	edit dl rm
acpi_viot.h	478	0644	edit dl rm
adb.h	1832	0644	edit dl rm
adfs_fs.h	574	0644	edit dl rm
adreno-smmu-priv.h	2807	0644	edit dl rm
adxl.h	310	0644	edit dl rm
aer.h	1822	0644	edit dl rm
agpgart.h	3881	0644	edit dl rm
agp_backend.h	3534	0644	edit dl rm
ahci-remap.h	607	0644	edit dl rm
ahci_platform.h	1747	0644	edit dl rm
aio.h	651	0644	edit dl rm
alarmtimer.h	1990	0644	edit dl rm
alcor_pci.h	9043	0644	edit dl rm
align.h	552	0644	edit dl rm
altera_jtaguart.h	379	0644	edit dl rm
altera_uart.h	397	0644	edit dl rm
amd-iommu.h	6325	0644	edit dl rm
anon_inodes.h	670	0644	edit dl rm
apm-emulation.h	1599	0644	edit dl rm
apm_bios.h	2305	0644	edit dl rm
apple-gmux.h	918	0644	edit dl rm
apple_bl.h	498	0644	edit dl rm
arch_topology.h	2551	0644	edit dl rm
arm-cci.h	1390	0644	edit dl rm
arm-smccc.h	17382	0644	edit dl rm
armada-37xx-rwtm-mailbox.h	431	0644	edit dl rm
arm_ffa.h	7545	0644	edit dl rm
arm_sdei.h	2730	0644	edit dl rm
array_size.h	332	0644	edit dl rm
ascii85.h	555	0644	edit dl rm
asn1.h	1832	0644	edit dl rm
asn1_ber_bytecode.h	2576	0644	edit dl rm
asn1_decoder.h	468	0644	edit dl rm
asn1_encoder.h	1006	0644	edit dl rm
assoc_array.h	2949	0644	edit dl rm
assoc_array_priv.h	5423	0644	edit dl rm
async.h	4439	0644	edit dl rm
async_tx.h	6860	0644	edit dl rm
ata.h	33799	0644	edit dl rm
atalk.h	4586	0644	edit dl rm
ata_platform.h	749	0644	edit dl rm
ath9k_platform.h	1477	0644	edit dl rm
atm.h	287	0644	edit dl rm
atmdev.h	10477	0644	edit dl rm
atmel-isc-media.h	2115	0644	edit dl rm
atmel-mci.h	1429	0644	edit dl rm
atmel-ssc.h	9971	0644	edit dl rm
atmel_pdc.h	1295	0644	edit dl rm
atm_tcp.h	511	0644	edit dl rm
atomic.h	2644	0644	edit dl rm
attribute_container.h	2803	0644	edit dl rm
audit.h	19921	0644	edit dl rm
auto_dev-ioctl.h	296	0644	edit dl rm
auto_fs.h	278	0644	edit dl rm
auxiliary_bus.h	2539	0644	edit dl rm
auxvec.h	304	0644	edit dl rm
average.h	2481	0644	edit dl rm
backing-dev-defs.h	8753	0644	edit dl rm
backing-dev.h	12189	0644	edit dl rm
backlight.h	13447	0644	edit dl rm
badblocks.h	2188	0644	edit dl rm
balloon_compaction.h	5892	0644	edit dl rm
bcd.h	559	0644	edit dl rm
bch.h	2152	0644	edit dl rm
bcm47xx_nvram.h	1033	0644	edit dl rm
bcm47xx_sprom.h	616	0644	edit dl rm
bcm47xx_wdt.h	555	0644	edit dl rm
bcm963xx_nvram.h	3036	0644	edit dl rm
bcm963xx_tag.h	3685	0644	edit dl rm
binfmts.h	4683	0644	edit dl rm
bio.h	20108	0644	edit dl rm
bitfield.h	5460	0644	edit dl rm
bitmap.h	22664	0644	edit dl rm
bitops.h	8733	0644	edit dl rm
bitrev.h	2594	0644	edit dl rm
bits.h	1387	0644	edit dl rm
bit_spinlock.h	2360	0644	edit dl rm
blk-cgroup.h	22648	0644	edit dl rm
blk-crypto.h	4117	0644	edit dl rm
blk-mq-pci.h	269	0644	edit dl rm
blk-mq-rdma.h	273	0644	edit dl rm
blk-mq-virtio.h	293	0644	edit dl rm
blk-mq.h	19834	0644	edit dl rm
blk-pm.h	708	0644	edit dl rm
blkdev.h	58041	0644	edit dl rm
blkpg.h	436	0644	edit dl rm
blktrace_api.h	3858	0644	edit dl rm
blk_types.h	15669	0644	edit dl rm
blockgroup_lock.h	810	0644	edit dl rm
bma150.h	1286	0644	edit dl rm
bootconfig.h	8712	0644	edit dl rm
bootmem_info.h	1733	0644	edit dl rm
bottom_half.h	974	0644	edit dl rm
bpf-cgroup.h	18796	0644	edit dl rm
bpf-netns.h	1559	0644	edit dl rm
bpf.h	76212	0644	edit dl rm
bpfilter.h	791	0644	edit dl rm
bpfptr.h	2029	0644	edit dl rm
bpf_lirc.h	698	0644	edit dl rm
bpf_local_storage.h	5359	0644	edit dl rm
bpf_lsm.h	1456	0644	edit dl rm
bpf_trace.h	166	0644	edit dl rm
bpf_types.h	5536	0644	edit dl rm
bpf_verifier.h	20865	0644	edit dl rm
brcmphy.h	13994	0644	edit dl rm
bsearch.h	624	0644	edit dl rm
bsg-lib.h	1759	0644	edit dl rm
bsg.h	492	0644	edit dl rm
btf.h	7432	0644	edit dl rm
btf_ids.h	5463	0644	edit dl rm
btree-128.h	2737	0644	edit dl rm
btree-type.h	3991	0644	edit dl rm
btree.h	7000	0644	edit dl rm
btrfs.h	145	0644	edit dl rm
buffer_head.h	14814	0644	edit dl rm
bug.h	2220	0644	edit dl rm
build-salt.h	375	0644	edit dl rm
buildid.h	561	0644	edit dl rm
build_bug.h	2823	0644	edit dl rm
bvec.h	6319	0644	edit dl rm
c2port.h	1384	0644	edit dl rm
cache.h	2616	0644	edit dl rm
cacheinfo.h	3837	0644	edit dl rm
capability.h	8486	0644	edit dl rm
cb710.h	5490	0644	edit dl rm
cciss_ioctl.h	1053	0644	edit dl rm
ccp.h	18577	0644	edit dl rm
cc_platform.h	2378	0644	edit dl rm
cdev.h	845	0644	edit dl rm
cdrom.h	9268	0644	edit dl rm
cfag12864b.h	1509	0644	edit dl rm
cfi.h	1152	0644	edit dl rm
cgroup-defs.h	24815	0644	edit dl rm
cgroup.h	28840	0644	edit dl rm
cgroup_rdma.h	1206	0644	edit dl rm
cgroup_subsys.h	1259	0644	edit dl rm
circ_buf.h	1120	0644	edit dl rm
cleancache.h	3982	0644	edit dl rm
cleanup.h	4986	0644	edit dl rm
clk-provider.h	59330	0644	edit dl rm
clk.h	34418	0644	edit dl rm
clkdev.h	1322	0644	edit dl rm
clockchips.h	7445	0644	edit dl rm
clocksource.h	10227	0644	edit dl rm
clocksource_ids.h	247	0644	edit dl rm
cm4000_cs.h	199	0644	edit dl rm
cma.h	2004	0644	edit dl rm
cnt32_to_63.h	3545	0644	edit dl rm
cn_proc.h	1890	0644	edit dl rm
coda.h	2215	0644	edit dl rm
compaction.h	7319	0644	edit dl rm
compat.h	32122	0644	edit dl rm
compiler-clang.h	4150	0644	edit dl rm
compiler-gcc.h	5021	0644	edit dl rm
compiler-intel.h	949	0644	edit dl rm
compiler-version.h	517	0644	edit dl rm
compiler.h	8553	0644	edit dl rm
compiler_attributes.h	13557	0644	edit dl rm
compiler_types.h	11023	0644	edit dl rm
completion.h	4101	0644	edit dl rm
component.h	4163	0644	edit dl rm
configfs.h	8683	0644	edit dl rm
connector.h	3927	0644	edit dl rm
console.h	7758	0644	edit dl rm
consolemap.h	1076	0644	edit dl rm
console_struct.h	7253	0644	edit dl rm
const.h	421	0644	edit dl rm
container.h	610	0644	edit dl rm
context_tracking.h	3362	0644	edit dl rm
context_tracking_state.h	1616	0644	edit dl rm
cookie.h	1254	0644	edit dl rm
cordic.h	2132	0644	edit dl rm
coredump.h	1154	0644	edit dl rm
coresight-pmu.h	1355	0644	edit dl rm
coresight-stm.h	152	0644	edit dl rm
coresight.h	18449	0644	edit dl rm
counter.h	15318	0644	edit dl rm
count_zeros.h	1453	0644	edit dl rm
cper.h	16963	0644	edit dl rm
cpu.h	8485	0644	edit dl rm
cpufeature.h	1751	0644	edit dl rm
cpufreq.h	33539	0644	edit dl rm
cpuhotplug.h	16949	0644	edit dl rm
cpuidle.h	10516	0644	edit dl rm
cpuidle_haltpoll.h	312	0644	edit dl rm
cpumask.h	30089	0644	edit dl rm
cpuset.h	8351	0644	edit dl rm
cpu_cooling.h	1901	0644	edit dl rm
cpu_pm.h	2433	0644	edit dl rm
cpu_rmap.h	1721	0644	edit dl rm
crash_core.h	3465	0644	edit dl rm
crash_dump.h	4149	0644	edit dl rm
crc-ccitt.h	609	0644	edit dl rm
crc-itu-t.h	531	0644	edit dl rm
crc-t10dif.h	453	0644	edit dl rm
crc4.h	192	0644	edit dl rm
crc7.h	316	0644	edit dl rm
crc8.h	3747	0644	edit dl rm
crc16.h	540	0644	edit dl rm
crc32.h	2894	0644	edit dl rm
crc32c.h	331	0644	edit dl rm
crc32poly.h	610	0644	edit dl rm
crc64.h	280	0644	edit dl rm
cred.h	12804	0644	edit dl rm
crypto.h	27890	0644	edit dl rm
cs5535.h	6277	0644	edit dl rm
ctype.h	1912	0644	edit dl rm
cuda.h	613	0644	edit dl rm
damon.h	10601	0644	edit dl rm
dasd_mod.h	204	0644	edit dl rm
davinci_emac.h	1080	0644	edit dl rm
dax.h	6719	0644	edit dl rm
dca.h	1922	0644	edit dl rm
dcache.h	19076	0644	edit dl rm
dccp.h	10988	0644	edit dl rm
debugfs.h	12253	0644	edit dl rm
debugobjects.h	4085	0644	edit dl rm
debug_locks.h	1627	0644	edit dl rm
delay.h	2490	0644	edit dl rm
delayacct.h	5584	0644	edit dl rm
delayed_call.h	709	0644	edit dl rm
devcoredump.h	2266	0644	edit dl rm
devfreq-event.h	6095	0644	edit dl rm
devfreq.h	14370	0644	edit dl rm
devfreq_cooling.h	2763	0644	edit dl rm
device-mapper.h	19371	0644	edit dl rm
device.h	35226	0644	edit dl rm
device_cgroup.h	1609	0644	edit dl rm
devm-helpers.h	2740	0644	edit dl rm
devpts_fs.h	1156	0644	edit dl rm
dev_printk.h	9883	0644	edit dl rm
dfl.h	2435	0644	edit dl rm
digsig.h	1212	0644	edit dl rm
dim.h	9421	0644	edit dl rm
dio.h	11019	0644	edit dl rm
dirent.h	215	0644	edit dl rm
dlm.h	6005	0644	edit dl rm
dlm_plock.h	532	0644	edit dl rm
dm-bufio.h	4992	0644	edit dl rm
dm-dirty-log.h	4038	0644	edit dl rm
dm-io.h	1980	0644	edit dl rm
dm-kcopyd.h	3013	0644	edit dl rm
dm-region-hash.h	3182	0644	edit dl rm
dm9000.h	987	0644	edit dl rm
dma-buf-map.h	8318	0644	edit dl rm
dma-buf.h	20962	0644	edit dl rm
dma-direct.h	3681	0644	edit dl rm
dma-direction.h	407	0644	edit dl rm
dma-fence-array.h	2191	0644	edit dl rm
dma-fence-chain.h	3144	0644	edit dl rm
dma-fence.h	21357	0644	edit dl rm
dma-heap.h	1616	0644	edit dl rm
dma-iommu.h	2265	0644	edit dl rm
dma-map-ops.h	13197	0644	edit dl rm
dma-mapping.h	20596	0644	edit dl rm
dma-resv.h	12236	0644	edit dl rm
dmaengine.h	54851	0644	edit dl rm
dmapool.h	1832	0644	edit dl rm
dmar.h	7929	0644	edit dl rm
dmi.h	4512	0644	edit dl rm
dnotify.h	1044	0644	edit dl rm
dns_resolver.h	1390	0644	edit dl rm
dqblk_qtree.h	2238	0644	edit dl rm
dqblk_v1.h	327	0644	edit dl rm
dqblk_v2.h	406	0644	edit dl rm
drbd.h	10311	0644	edit dl rm
drbd_genl.h	22010	0644	edit dl rm
drbd_genl_api.h	1808	0644	edit dl rm
drbd_limits.h	8003	0644	edit dl rm
ds2782_battery.h	158	0644	edit dl rm
dtlk.h	3584	0644	edit dl rm
dtpm.h	1684	0644	edit dl rm
dw_apb_timer.h	1566	0644	edit dl rm
dynamic_debug.h	6471	0644	edit dl rm
dynamic_queue_limits.h	3812	0644	edit dl rm
earlycpio.h	359	0644	edit dl rm
ecryptfs.h	3915	0644	edit dl rm
edac.h	19924	0644	edit dl rm
edd.h	1077	0644	edit dl rm
eeprom_93cx6.h	2707	0644	edit dl rm
eeprom_93xx46.h	1062	0644	edit dl rm
efi-bgrt.h	644	0644	edit dl rm
efi.h	43038	0644	edit dl rm
efi_embedded_fw.h	1060	0644	edit dl rm
efs_vh.h	1585	0644	edit dl rm
eisa.h	3031	0644	edit dl rm
elevator.h	5653	0644	edit dl rm
elf-fdpic.h	2030	0644	edit dl rm
elf-randomize.h	583	0644	edit dl rm
elf.h	3030	0644	edit dl rm
elfcore-compat.h	1302	0644	edit dl rm
elfcore.h	4209	0644	edit dl rm
elfnote-lto.h	314	0644	edit dl rm
elfnote.h	3626	0644	edit dl rm
enclosure.h	4112	0644	edit dl rm
energy_model.h	8361	0644	edit dl rm
entry-common.h	17359	0644	edit dl rm
entry-kvm.h	2800	0644	edit dl rm
err.h	1527	0644	edit dl rm
errname.h	283	0644	edit dl rm
errno.h	1481	0644	edit dl rm
error-injection.h	607	0644	edit dl rm
errqueue.h	524	0644	edit dl rm
errseq.h	382	0644	edit dl rm
etherdevice.h	17607	0644	edit dl rm
ethtool.h	32505	0644	edit dl rm
ethtool_netlink.h	2029	0644	edit dl rm
eventfd.h	2336	0644	edit dl rm
eventpoll.h	2472	0644	edit dl rm
evm.h	3500	0644	edit dl rm
export.h	5394	0644	edit dl rm
exportfs.h	8421	0644	edit dl rm
ext2_fs.h	967	0644	edit dl rm
extable.h	1309	0644	edit dl rm
extcon-provider.h	3919	0644	edit dl rm
extcon.h	10399	0644	edit dl rm
f2fs_fs.h	19471	0644	edit dl rm
f75375s.h	541	0644	edit dl rm
falloc.h	1624	0644	edit dl rm
fanotify.h	4547	0644	edit dl rm
fault-inject-usercopy.h	496	0644	edit dl rm
fault-inject.h	1975	0644	edit dl rm
fb.h	28958	0644	edit dl rm
fbcon.h	2256	0644	edit dl rm
fcdevice.h	774	0644	edit dl rm
fcntl.h	1698	0644	edit dl rm
fd.h	490	0644	edit dl rm
fddidevice.h	833	0644	edit dl rm
fdtable.h	3571	0644	edit dl rm
fec.h	463	0644	edit dl rm
fiemap.h	713	0644	edit dl rm
file.h	3158	0644	edit dl rm
fileattr.h	1952	0644	edit dl rm
filter.h	43995	0644	edit dl rm
fips.h	303	0644	edit dl rm
firewire.h	13718	0644	edit dl rm
firmware-map.h	959	0644	edit dl rm
firmware.h	3348	0644	edit dl rm
fixp-arith.h	4290	0644	edit dl rm
flat.h	2629	0644	edit dl rm
flex_proportions.h	2881	0644	edit dl rm
font.h	1714	0644	edit dl rm
fortify-string.h	9329	0644	edit dl rm
freelist.h	3890	0644	edit dl rm
freezer.h	9193	0644	edit dl rm
frontswap.h	3118	0644	edit dl rm
fs.h	125506	0644	edit dl rm
fscache-cache.h	19025	0644	edit dl rm
fscache.h	30303	0644	edit dl rm
fscrypt.h	30622	0644	edit dl rm
fsi-occ.h	681	0644	edit dl rm
fsi-sbefifo.h	629	0644	edit dl rm
fsi.h	2318	0644	edit dl rm
fsl-diu-fb.h	3963	0644	edit dl rm
fsldma.h	202	0644	edit dl rm
fsl_devices.h	4261	0644	edit dl rm
fsl_hypervisor.h	2824	0644	edit dl rm
fsl_ifc.h	25063	0644	edit dl rm
fsnotify.h	10287	0644	edit dl rm
fsnotify_backend.h	30076	0644	edit dl rm
fsverity.h	6914	0644	edit dl rm
fs_context.h	8818	0644	edit dl rm
fs_enet_pd.h	3457	0644	edit dl rm
fs_parser.h	4543	0644	edit dl rm
fs_pin.h	539	0644	edit dl rm
fs_stack.h	811	0644	edit dl rm
fs_struct.h	1066	0644	edit dl rm
fs_types.h	2071	0644	edit dl rm
fs_uart_pd.h	1523	0644	edit dl rm
ftrace.h	35597	0644	edit dl rm
ftrace_irq.h	884	0644	edit dl rm
futex.h	2497	0644	edit dl rm
fwnode.h	7535	0644	edit dl rm
fwnode_mdio.h	858	0644	edit dl rm
gameport.h	5549	0644	edit dl rm
gcd.h	193	0644	edit dl rm
genalloc.h	7912	0644	edit dl rm
generic-radix-tree.h	6504	0644	edit dl rm
genetlink.h	589	0644	edit dl rm
genhd.h	9055	0644	edit dl rm
genl_magic_func.h	11809	0644	edit dl rm
genl_magic_struct.h	7793	0644	edit dl rm
getcpu.h	641	0644	edit dl rm
gfp.h	26892	0644	edit dl rm
glob.h	256	0644	edit dl rm
gnss.h	1601	0644	edit dl rm
goldfish.h	878	0644	edit dl rm
gpio-pxa.h	571	0644	edit dl rm
gpio.h	5423	0644	edit dl rm
gpio_keys.h	1782	0644	edit dl rm
greybus.h	4240	0644	edit dl rm
hardirq.h	3516	0644	edit dl rm
hash.h	3071	0644	edit dl rm
hashtable.h	6827	0644	edit dl rm
hdlc.h	3267	0644	edit dl rm
hdlcdrv.h	6468	0644	edit dl rm
hdmi.h	12705	0644	edit dl rm
hid-debug.h	1458	0644	edit dl rm
hid-roccat.h	484	0644	edit dl rm
hid-sensor-hub.h	9190	0644	edit dl rm
hid-sensor-ids.h	7617	0644	edit dl rm
hid.h	38923	0644	edit dl rm
hidden.h	966	0644	edit dl rm
hiddev.h	1458	0644	edit dl rm
hidraw.h	1146	0644	edit dl rm
highmem-internal.h	5239	0644	edit dl rm
highmem.h	9731	0644	edit dl rm
highuid.h	3194	0644	edit dl rm
hil.h	18857	0644	edit dl rm
hil_mlc.h	5248	0644	edit dl rm
hippidevice.h	1052	0644	edit dl rm
hmm.h	4168	0644	edit dl rm
host1x.h	10993	0644	edit dl rm
hpet.h	2615	0644	edit dl rm
hp_sdc.h	14352	0644	edit dl rm
hrtimer.h	16515	0644	edit dl rm
hrtimer_defs.h	660	0644	edit dl rm
htcpld.h	617	0644	edit dl rm
hugetlb.h	30606	0644	edit dl rm
hugetlb_cgroup.h	7241	0644	edit dl rm
hugetlb_inline.h	374	0644	edit dl rm
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Edit: /usr/src/linux-headers-5.15.0-190/include/linux/iommu.h (34873B)

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2007-2008 Advanced Micro Devices, Inc.
 * Author: Joerg Roedel <joerg.roedel@amd.com>
 */

#ifndef __LINUX_IOMMU_H
#define __LINUX_IOMMU_H

#include <linux/scatterlist.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/ioasid.h>
#include <uapi/linux/iommu.h>

#define IOMMU_READ	(1 << 0)
#define IOMMU_WRITE	(1 << 1)
#define IOMMU_CACHE	(1 << 2) /* DMA cache coherency */
#define IOMMU_NOEXEC	(1 << 3)
#define IOMMU_MMIO	(1 << 4) /* e.g. things like MSI doorbells */
/*
 * Where the bus hardware includes a privilege level as part of its access type
 * markings, and certain devices are capable of issuing transactions marked as
 * either 'supervisor' or 'user', the IOMMU_PRIV flag requests that the other
 * given permission flags only apply to accesses at the higher privilege level,
 * and that unprivileged transactions should have as little access as possible.
 * This would usually imply the same permissions as kernel mappings on the CPU,
 * if the IOMMU page table format is equivalent.
 */
#define IOMMU_PRIV	(1 << 5)

struct iommu_ops;
struct iommu_group;
struct bus_type;
struct device;
struct iommu_domain;
struct notifier_block;
struct iommu_sva;
struct iommu_fault_event;
struct iommu_dma_cookie;

/* iommu fault flags */
#define IOMMU_FAULT_READ	0x0
#define IOMMU_FAULT_WRITE	0x1

typedef int (*iommu_fault_handler_t)(struct iommu_domain *,
			struct device *, unsigned long, int, void *);
typedef int (*iommu_dev_fault_handler_t)(struct iommu_fault *, void *);

struct iommu_domain_geometry {
	dma_addr_t aperture_start; /* First address that can be mapped    */
	dma_addr_t aperture_end;   /* Last address that can be mapped     */
	bool force_aperture;       /* DMA only allowed in mappable range? */
};

/* Domain feature flags */
#define __IOMMU_DOMAIN_PAGING	(1U << 0)  /* Support for iommu_map/unmap */
#define __IOMMU_DOMAIN_DMA_API	(1U << 1)  /* Domain for use in DMA-API
					      implementation              */
#define __IOMMU_DOMAIN_PT	(1U << 2)  /* Domain is identity mapped   */
#define __IOMMU_DOMAIN_DMA_FQ	(1U << 3)  /* DMA-API uses flush queue    */

/*
 * This are the possible domain-types
 *
 *	IOMMU_DOMAIN_BLOCKED	- All DMA is blocked, can be used to isolate
 *				  devices
 *	IOMMU_DOMAIN_IDENTITY	- DMA addresses are system physical addresses
 *	IOMMU_DOMAIN_UNMANAGED	- DMA mappings managed by IOMMU-API user, used
 *				  for VMs
 *	IOMMU_DOMAIN_DMA	- Internally used for DMA-API implementations.
 *				  This flag allows IOMMU drivers to implement
 *				  certain optimizations for these domains
 *	IOMMU_DOMAIN_DMA_FQ	- As above, but definitely using batched TLB
 *				  invalidation.
 */
#define IOMMU_DOMAIN_BLOCKED	(0U)
#define IOMMU_DOMAIN_IDENTITY	(__IOMMU_DOMAIN_PT)
#define IOMMU_DOMAIN_UNMANAGED	(__IOMMU_DOMAIN_PAGING)
#define IOMMU_DOMAIN_DMA	(__IOMMU_DOMAIN_PAGING |	\
				 __IOMMU_DOMAIN_DMA_API)
#define IOMMU_DOMAIN_DMA_FQ	(__IOMMU_DOMAIN_PAGING |	\
				 __IOMMU_DOMAIN_DMA_API |	\
				 __IOMMU_DOMAIN_DMA_FQ)

struct iommu_domain {
	unsigned type;
	const struct iommu_ops *ops;
	unsigned long pgsize_bitmap;	/* Bitmap of page sizes in use */
	iommu_fault_handler_t handler;
	void *handler_token;
	struct iommu_domain_geometry geometry;
	struct iommu_dma_cookie *iova_cookie;
};

static inline bool iommu_is_dma_domain(struct iommu_domain *domain)
{
	return domain->type & __IOMMU_DOMAIN_DMA_API;
}

enum iommu_cap {
	IOMMU_CAP_CACHE_COHERENCY,	/* IOMMU can enforce cache coherent DMA
					   transactions */
	IOMMU_CAP_INTR_REMAP,		/* IOMMU supports interrupt isolation */
	IOMMU_CAP_NOEXEC,		/* IOMMU_NOEXEC flag */
};

/* These are the possible reserved region types */
enum iommu_resv_type {
	/* Memory regions which must be mapped 1:1 at all times */
	IOMMU_RESV_DIRECT,
	/*
	 * Memory regions which are advertised to be 1:1 but are
	 * commonly considered relaxable in some conditions,
	 * for instance in device assignment use case (USB, Graphics)
	 */
	IOMMU_RESV_DIRECT_RELAXABLE,
	/* Arbitrary "never map this or give it to a device" address ranges */
	IOMMU_RESV_RESERVED,
	/* Hardware MSI region (untranslated) */
	IOMMU_RESV_MSI,
	/* Software-managed MSI translation window */
	IOMMU_RESV_SW_MSI,
};

/**
 * struct iommu_resv_region - descriptor for a reserved memory region
 * @list: Linked list pointers
 * @start: System physical start address of the region
 * @length: Length of the region in bytes
 * @prot: IOMMU Protection flags (READ/WRITE/...)
 * @type: Type of the reserved region
 */
struct iommu_resv_region {
	struct list_head	list;
	phys_addr_t		start;
	size_t			length;
	int			prot;
	enum iommu_resv_type	type;
};

/**
 * enum iommu_dev_features - Per device IOMMU features
 * @IOMMU_DEV_FEAT_AUX: Auxiliary domain feature
 * @IOMMU_DEV_FEAT_SVA: Shared Virtual Addresses
 * @IOMMU_DEV_FEAT_IOPF: I/O Page Faults such as PRI or Stall. Generally
 *			 enabling %IOMMU_DEV_FEAT_SVA requires
 *			 %IOMMU_DEV_FEAT_IOPF, but some devices manage I/O Page
 *			 Faults themselves instead of relying on the IOMMU. When
 *			 supported, this feature must be enabled before and
 *			 disabled after %IOMMU_DEV_FEAT_SVA.
 *
 * Device drivers query whether a feature is supported using
 * iommu_dev_has_feature(), and enable it using iommu_dev_enable_feature().
 */
enum iommu_dev_features {
	IOMMU_DEV_FEAT_AUX,
	IOMMU_DEV_FEAT_SVA,
	IOMMU_DEV_FEAT_IOPF,
};

#define IOMMU_PASID_INVALID	(-1U)

#ifdef CONFIG_IOMMU_API

/**
 * struct iommu_iotlb_gather - Range information for a pending IOTLB flush
 *
 * @start: IOVA representing the start of the range to be flushed
 * @end: IOVA representing the end of the range to be flushed (inclusive)
 * @pgsize: The interval at which to perform the flush
 * @freelist: Removed pages to free after sync
 * @queued: Indicates that the flush will be queued
 *
 * This structure is intended to be updated by multiple calls to the
 * ->unmap() function in struct iommu_ops before eventually being passed
 * into ->iotlb_sync(). Drivers can add pages to @freelist to be freed after
 * ->iotlb_sync() or ->iotlb_flush_all() have cleared all cached references to
 * them. @queued is set to indicate when ->iotlb_flush_all() will be called
 * later instead of ->iotlb_sync(), so drivers may optimise accordingly.
 */
struct iommu_iotlb_gather {
	unsigned long		start;
	unsigned long		end;
	size_t			pgsize;
	struct page		*freelist;
	bool			queued;
};

/**
 * struct iommu_ops - iommu ops and capabilities
 * @capable: check capability
 * @domain_alloc: allocate iommu domain
 * @domain_free: free iommu domain
 * @attach_dev: attach device to an iommu domain
 * @detach_dev: detach device from an iommu domain
 * @map: map a physically contiguous memory region to an iommu domain
 * @map_pages: map a physically contiguous set of pages of the same size to
 *             an iommu domain.
 * @unmap: unmap a physically contiguous memory region from an iommu domain
 * @unmap_pages: unmap a number of pages of the same size from an iommu domain
 * @flush_iotlb_all: Synchronously flush all hardware TLBs for this domain
 * @iotlb_sync_map: Sync mappings created recently using @map to the hardware
 * @iotlb_sync: Flush all queued ranges from the hardware TLBs and empty flush
 *            queue
 * @iova_to_phys: translate iova to physical address
 * @probe_device: Add device to iommu driver handling
 * @release_device: Remove device from iommu driver handling
 * @probe_finalize: Do final setup work after the device is added to an IOMMU
 *                  group and attached to the groups domain
 * @device_group: find iommu group for a particular device
 * @enable_nesting: Enable nesting
 * @set_pgtable_quirks: Set io page table quirks (IO_PGTABLE_QUIRK_*)
 * @get_resv_regions: Request list of reserved regions for a device
 * @put_resv_regions: Free list of reserved regions for a device
 * @apply_resv_region: Temporary helper call-back for iova reserved ranges
 * @of_xlate: add OF master IDs to iommu grouping
 * @is_attach_deferred: Check if domain attach should be deferred from iommu
 *                      driver init to device driver init (default no)
 * @dev_has/enable/disable_feat: per device entries to check/enable/disable
 *                               iommu specific features.
 * @dev_feat_enabled: check enabled feature
 * @aux_attach/detach_dev: aux-domain specific attach/detach entries.
 * @aux_get_pasid: get the pasid given an aux-domain
 * @sva_bind: Bind process address space to device
 * @sva_unbind: Unbind process address space from device
 * @sva_get_pasid: Get PASID associated to a SVA handle
 * @page_response: handle page request response
 * @cache_invalidate: invalidate translation caches
 * @sva_bind_gpasid: bind guest pasid and mm
 * @sva_unbind_gpasid: unbind guest pasid and mm
 * @def_domain_type: device default domain type, return value:
 *		- IOMMU_DOMAIN_IDENTITY: must use an identity domain
 *		- IOMMU_DOMAIN_DMA: must use a dma domain
 *		- 0: use the default setting
 * @pgsize_bitmap: bitmap of all possible supported page sizes
 * @owner: Driver module providing these ops
 */
struct iommu_ops {
	bool (*capable)(enum iommu_cap);

/* Domain allocation and freeing by the iommu driver */
	struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type);
	void (*domain_free)(struct iommu_domain *);

int (*attach_dev)(struct iommu_domain *domain, struct device *dev);
	void (*detach_dev)(struct iommu_domain *domain, struct device *dev);
	int (*map)(struct iommu_domain *domain, unsigned long iova,
		   phys_addr_t paddr, size_t size, int prot, gfp_t gfp);
	int (*map_pages)(struct iommu_domain *domain, unsigned long iova,
			 phys_addr_t paddr, size_t pgsize, size_t pgcount,
			 int prot, gfp_t gfp, size_t *mapped);
	size_t (*unmap)(struct iommu_domain *domain, unsigned long iova,
		     size_t size, struct iommu_iotlb_gather *iotlb_gather);
	size_t (*unmap_pages)(struct iommu_domain *domain, unsigned long iova,
			      size_t pgsize, size_t pgcount,
			      struct iommu_iotlb_gather *iotlb_gather);
	void (*flush_iotlb_all)(struct iommu_domain *domain);
	void (*iotlb_sync_map)(struct iommu_domain *domain, unsigned long iova,
			       size_t size);
	void (*iotlb_sync)(struct iommu_domain *domain,
			   struct iommu_iotlb_gather *iotlb_gather);
	phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
	struct iommu_device *(*probe_device)(struct device *dev);
	void (*release_device)(struct device *dev);
	void (*probe_finalize)(struct device *dev);
	struct iommu_group *(*device_group)(struct device *dev);
	int (*enable_nesting)(struct iommu_domain *domain);
	int (*set_pgtable_quirks)(struct iommu_domain *domain,
				  unsigned long quirks);

/* Request/Free a list of reserved regions for a device */
	void (*get_resv_regions)(struct device *dev, struct list_head *list);
	void (*put_resv_regions)(struct device *dev, struct list_head *list);
	void (*apply_resv_region)(struct device *dev,
				  struct iommu_domain *domain,
				  struct iommu_resv_region *region);

int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
	bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);

/* Per device IOMMU features */
	bool (*dev_has_feat)(struct device *dev, enum iommu_dev_features f);
	bool (*dev_feat_enabled)(struct device *dev, enum iommu_dev_features f);
	int (*dev_enable_feat)(struct device *dev, enum iommu_dev_features f);
	int (*dev_disable_feat)(struct device *dev, enum iommu_dev_features f);

/* Aux-domain specific attach/detach entries */
	int (*aux_attach_dev)(struct iommu_domain *domain, struct device *dev);
	void (*aux_detach_dev)(struct iommu_domain *domain, struct device *dev);
	int (*aux_get_pasid)(struct iommu_domain *domain, struct device *dev);

struct iommu_sva *(*sva_bind)(struct device *dev, struct mm_struct *mm,
				      void *drvdata);
	void (*sva_unbind)(struct iommu_sva *handle);
	u32 (*sva_get_pasid)(struct iommu_sva *handle);

int (*page_response)(struct device *dev,
			     struct iommu_fault_event *evt,
			     struct iommu_page_response *msg);
	int (*cache_invalidate)(struct iommu_domain *domain, struct device *dev,
				struct iommu_cache_invalidate_info *inv_info);
	int (*sva_bind_gpasid)(struct iommu_domain *domain,
			struct device *dev, struct iommu_gpasid_bind_data *data);

int (*sva_unbind_gpasid)(struct device *dev, u32 pasid);

int (*def_domain_type)(struct device *dev);

unsigned long pgsize_bitmap;
	struct module *owner;
};

/**
 * struct iommu_device - IOMMU core representation of one IOMMU hardware
 *			 instance
 * @list: Used by the iommu-core to keep a list of registered iommus
 * @ops: iommu-ops for talking to this iommu
 * @dev: struct device for sysfs handling
 */
struct iommu_device {
	struct list_head list;
	const struct iommu_ops *ops;
	struct fwnode_handle *fwnode;
	struct device *dev;
};

/**
 * struct iommu_fault_event - Generic fault event
 *
 * Can represent recoverable faults such as a page requests or
 * unrecoverable faults such as DMA or IRQ remapping faults.
 *
 * @fault: fault descriptor
 * @list: pending fault event list, used for tracking responses
 */
struct iommu_fault_event {
	struct iommu_fault fault;
	struct list_head list;
};

/**
 * struct iommu_fault_param - per-device IOMMU fault data
 * @handler: Callback function to handle IOMMU faults at device level
 * @data: handler private data
 * @faults: holds the pending faults which needs response
 * @lock: protect pending faults list
 */
struct iommu_fault_param {
	iommu_dev_fault_handler_t handler;
	void *data;
	struct list_head faults;
	struct mutex lock;
};

/**
 * struct dev_iommu - Collection of per-device IOMMU data
 *
 * @fault_param: IOMMU detected device fault reporting data
 * @iopf_param:	 I/O Page Fault queue and data
 * @fwspec:	 IOMMU fwspec data
 * @iommu_dev:	 IOMMU device this device is linked to
 * @priv:	 IOMMU Driver private data
 *
 * TODO: migrate other per device data pointers under iommu_dev_data, e.g.
 *	struct iommu_group	*iommu_group;
 */
struct dev_iommu {
	struct mutex lock;
	struct iommu_fault_param	*fault_param;
	struct iopf_device_param	*iopf_param;
	struct iommu_fwspec		*fwspec;
	struct iommu_device		*iommu_dev;
	void				*priv;
};

int iommu_device_register(struct iommu_device *iommu,
			  const struct iommu_ops *ops,
			  struct device *hwdev);
void iommu_device_unregister(struct iommu_device *iommu);
int  iommu_device_sysfs_add(struct iommu_device *iommu,
			    struct device *parent,
			    const struct attribute_group **groups,
			    const char *fmt, ...) __printf(4, 5);
void iommu_device_sysfs_remove(struct iommu_device *iommu);
int  iommu_device_link(struct iommu_device   *iommu, struct device *link);
void iommu_device_unlink(struct iommu_device *iommu, struct device *link);
int iommu_deferred_attach(struct device *dev, struct iommu_domain *domain);

static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
{
	return (struct iommu_device *)dev_get_drvdata(dev);
}

static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather)
{
	*gather = (struct iommu_iotlb_gather) {
		.start	= ULONG_MAX,
	};
}

#define IOMMU_GROUP_NOTIFY_ADD_DEVICE		1 /* Device added */
#define IOMMU_GROUP_NOTIFY_DEL_DEVICE		2 /* Pre Device removed */
#define IOMMU_GROUP_NOTIFY_BIND_DRIVER		3 /* Pre Driver bind */
#define IOMMU_GROUP_NOTIFY_BOUND_DRIVER		4 /* Post Driver bind */
#define IOMMU_GROUP_NOTIFY_UNBIND_DRIVER	5 /* Pre Driver unbind */
#define IOMMU_GROUP_NOTIFY_UNBOUND_DRIVER	6 /* Post Driver unbind */

extern int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops);
extern int bus_iommu_probe(struct bus_type *bus);
extern bool iommu_present(struct bus_type *bus);
extern bool iommu_capable(struct bus_type *bus, enum iommu_cap cap);
extern struct iommu_domain *iommu_domain_alloc(struct bus_type *bus);
extern struct iommu_group *iommu_group_get_by_id(int id);
extern void iommu_domain_free(struct iommu_domain *domain);
extern int iommu_attach_device(struct iommu_domain *domain,
			       struct device *dev);
extern void iommu_detach_device(struct iommu_domain *domain,
				struct device *dev);
extern int iommu_uapi_cache_invalidate(struct iommu_domain *domain,
				       struct device *dev,
				       void __user *uinfo);

extern int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain,
				      struct device *dev, void __user *udata);
extern int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain,
					struct device *dev, void __user *udata);
extern int iommu_sva_unbind_gpasid(struct iommu_domain *domain,
				   struct device *dev, ioasid_t pasid);
extern struct iommu_domain *iommu_get_domain_for_dev(struct device *dev);
extern struct iommu_domain *iommu_get_dma_domain(struct device *dev);
extern int iommu_map(struct iommu_domain *domain, unsigned long iova,
		     phys_addr_t paddr, size_t size, int prot);
extern int iommu_map_atomic(struct iommu_domain *domain, unsigned long iova,
			    phys_addr_t paddr, size_t size, int prot);
extern size_t iommu_unmap(struct iommu_domain *domain, unsigned long iova,
			  size_t size);
extern size_t iommu_unmap_fast(struct iommu_domain *domain,
			       unsigned long iova, size_t size,
			       struct iommu_iotlb_gather *iotlb_gather);
extern ssize_t iommu_map_sg(struct iommu_domain *domain, unsigned long iova,
		struct scatterlist *sg, unsigned int nents, int prot);
extern ssize_t iommu_map_sg_atomic(struct iommu_domain *domain,
				   unsigned long iova, struct scatterlist *sg,
				   unsigned int nents, int prot);
extern phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova);
extern void iommu_set_fault_handler(struct iommu_domain *domain,
			iommu_fault_handler_t handler, void *token);

extern void iommu_get_resv_regions(struct device *dev, struct list_head *list);
extern void iommu_put_resv_regions(struct device *dev, struct list_head *list);
extern void generic_iommu_put_resv_regions(struct device *dev,
					   struct list_head *list);
extern void iommu_set_default_passthrough(bool cmd_line);
extern void iommu_set_default_translated(bool cmd_line);
extern bool iommu_default_passthrough(void);
extern struct iommu_resv_region *
iommu_alloc_resv_region(phys_addr_t start, size_t length, int prot,
			enum iommu_resv_type type);
extern int iommu_get_group_resv_regions(struct iommu_group *group,
					struct list_head *head);

extern int iommu_attach_group(struct iommu_domain *domain,
			      struct iommu_group *group);
extern void iommu_detach_group(struct iommu_domain *domain,
			       struct iommu_group *group);
extern struct iommu_group *iommu_group_alloc(void);
extern void *iommu_group_get_iommudata(struct iommu_group *group);
extern void iommu_group_set_iommudata(struct iommu_group *group,
				      void *iommu_data,
				      void (*release)(void *iommu_data));
extern int iommu_group_set_name(struct iommu_group *group, const char *name);
extern int iommu_group_add_device(struct iommu_group *group,
				  struct device *dev);
extern void iommu_group_remove_device(struct device *dev);
extern int iommu_group_for_each_dev(struct iommu_group *group, void *data,
				    int (*fn)(struct device *, void *));
extern struct iommu_group *iommu_group_get(struct device *dev);
extern struct iommu_group *iommu_group_ref_get(struct iommu_group *group);
extern void iommu_group_put(struct iommu_group *group);
extern int iommu_group_register_notifier(struct iommu_group *group,
					 struct notifier_block *nb);
extern int iommu_group_unregister_notifier(struct iommu_group *group,
					   struct notifier_block *nb);
extern int iommu_register_device_fault_handler(struct device *dev,
					iommu_dev_fault_handler_t handler,
					void *data);

extern int iommu_unregister_device_fault_handler(struct device *dev);

extern int iommu_report_device_fault(struct device *dev,
				     struct iommu_fault_event *evt);
extern int iommu_page_response(struct device *dev,
			       struct iommu_page_response *msg);

extern int iommu_group_id(struct iommu_group *group);
extern struct iommu_domain *iommu_group_default_domain(struct iommu_group *);

int iommu_enable_nesting(struct iommu_domain *domain);
int iommu_set_pgtable_quirks(struct iommu_domain *domain,
		unsigned long quirks);

void iommu_set_dma_strict(void);

extern int report_iommu_fault(struct iommu_domain *domain, struct device *dev,
			      unsigned long iova, int flags);

static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
{
	if (domain->ops->flush_iotlb_all)
		domain->ops->flush_iotlb_all(domain);
}

static inline void iommu_iotlb_sync(struct iommu_domain *domain,
				  struct iommu_iotlb_gather *iotlb_gather)
{
	if (domain->ops->iotlb_sync)
		domain->ops->iotlb_sync(domain, iotlb_gather);

iommu_iotlb_gather_init(iotlb_gather);
}

/**
 * iommu_iotlb_gather_is_disjoint - Checks whether a new range is disjoint
 *
 * @gather: TLB gather data
 * @iova: start of page to invalidate
 * @size: size of page to invalidate
 *
 * Helper for IOMMU drivers to check whether a new range and the gathered range
 * are disjoint. For many IOMMUs, flushing the IOMMU in this case is better
 * than merging the two, which might lead to unnecessary invalidations.
 */
static inline
bool iommu_iotlb_gather_is_disjoint(struct iommu_iotlb_gather *gather,
				    unsigned long iova, size_t size)
{
	unsigned long start = iova, end = start + size - 1;

return gather->end != 0 &&
		(end + 1 < gather->start || start > gather->end + 1);
}

/**
 * iommu_iotlb_gather_add_range - Gather for address-based TLB invalidation
 * @gather: TLB gather data
 * @iova: start of page to invalidate
 * @size: size of page to invalidate
 *
 * Helper for IOMMU drivers to build arbitrarily-sized invalidation commands
 * where only the address range matters, and simply minimising intermediate
 * syncs is preferred.
 */
static inline void iommu_iotlb_gather_add_range(struct iommu_iotlb_gather *gather,
						unsigned long iova, size_t size)
{
	unsigned long end = iova + size - 1;

if (gather->start > iova)
		gather->start = iova;
	if (gather->end < end)
		gather->end = end;
}

/**
 * iommu_iotlb_gather_add_page - Gather for page-based TLB invalidation
 * @domain: IOMMU domain to be invalidated
 * @gather: TLB gather data
 * @iova: start of page to invalidate
 * @size: size of page to invalidate
 *
 * Helper for IOMMU drivers to build invalidation commands based on individual
 * pages, or with page size/table level hints which cannot be gathered if they
 * differ.
 */
static inline void iommu_iotlb_gather_add_page(struct iommu_domain *domain,
					       struct iommu_iotlb_gather *gather,
					       unsigned long iova, size_t size)
{
	/*
	 * If the new page is disjoint from the current range or is mapped at
	 * a different granularity, then sync the TLB so that the gather
	 * structure can be rewritten.
	 */
	if ((gather->pgsize && gather->pgsize != size) ||
	    iommu_iotlb_gather_is_disjoint(gather, iova, size))
		iommu_iotlb_sync(domain, gather);

gather->pgsize = size;
	iommu_iotlb_gather_add_range(gather, iova, size);
}

static inline bool iommu_iotlb_gather_queued(struct iommu_iotlb_gather *gather)
{
	return gather && gather->queued;
}

/* PCI device grouping function */
extern struct iommu_group *pci_device_group(struct device *dev);
/* Generic device grouping function */
extern struct iommu_group *generic_device_group(struct device *dev);
/* FSL-MC device grouping function */
struct iommu_group *fsl_mc_device_group(struct device *dev);

/**
 * struct iommu_fwspec - per-device IOMMU instance data
 * @ops: ops for this device's IOMMU
 * @iommu_fwnode: firmware handle for this device's IOMMU
 * @flags: IOMMU_FWSPEC_* flags
 * @num_ids: number of associated device IDs
 * @ids: IDs which this device may present to the IOMMU
 */
struct iommu_fwspec {
	const struct iommu_ops	*ops;
	struct fwnode_handle	*iommu_fwnode;
	u32			flags;
	unsigned int		num_ids;
	u32			ids[];
};

/* ATS is supported */
#define IOMMU_FWSPEC_PCI_RC_ATS			(1 << 0)

/**
 * struct iommu_sva - handle to a device-mm bond
 */
struct iommu_sva {
	struct device			*dev;
};

int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,
		      const struct iommu_ops *ops);
void iommu_fwspec_free(struct device *dev);
int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids);
const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);

static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
{
	if (dev->iommu)
		return dev->iommu->fwspec;
	else
		return NULL;
}

static inline void dev_iommu_fwspec_set(struct device *dev,
					struct iommu_fwspec *fwspec)
{
	dev->iommu->fwspec = fwspec;
}

static inline void *dev_iommu_priv_get(struct device *dev)
{
	if (dev->iommu)
		return dev->iommu->priv;
	else
		return NULL;
}

static inline void dev_iommu_priv_set(struct device *dev, void *priv)
{
	dev->iommu->priv = priv;
}

int iommu_probe_device(struct device *dev);
void iommu_release_device(struct device *dev);

int iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features f);
int iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features f);
bool iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features f);
int iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev);
void iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev);
int iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev);

struct iommu_sva *iommu_sva_bind_device(struct device *dev,
					struct mm_struct *mm,
					void *drvdata);
void iommu_sva_unbind_device(struct iommu_sva *handle);
u32 iommu_sva_get_pasid(struct iommu_sva *handle);

#else /* CONFIG_IOMMU_API */

struct iommu_ops {};
struct iommu_group {};
struct iommu_fwspec {};
struct iommu_device {};
struct iommu_fault_param {};
struct iommu_iotlb_gather {};

static inline bool iommu_present(struct bus_type *bus)
{
	return false;
}

static inline bool iommu_capable(struct bus_type *bus, enum iommu_cap cap)
{
	return false;
}

static inline struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
{
	return NULL;
}

static inline struct iommu_group *iommu_group_get_by_id(int id)
{
	return NULL;
}

static inline void iommu_domain_free(struct iommu_domain *domain)
{
}

static inline int iommu_attach_device(struct iommu_domain *domain,
				      struct device *dev)
{
	return -ENODEV;
}

static inline void iommu_detach_device(struct iommu_domain *domain,
				       struct device *dev)
{
}

static inline struct iommu_domain *iommu_get_domain_for_dev(struct device *dev)
{
	return NULL;
}

static inline int iommu_map(struct iommu_domain *domain, unsigned long iova,
			    phys_addr_t paddr, size_t size, int prot)
{
	return -ENODEV;
}

static inline int iommu_map_atomic(struct iommu_domain *domain,
				   unsigned long iova, phys_addr_t paddr,
				   size_t size, int prot)
{
	return -ENODEV;
}

static inline size_t iommu_unmap(struct iommu_domain *domain,
				 unsigned long iova, size_t size)
{
	return 0;
}

static inline size_t iommu_unmap_fast(struct iommu_domain *domain,
				      unsigned long iova, int gfp_order,
				      struct iommu_iotlb_gather *iotlb_gather)
{
	return 0;
}

static inline ssize_t iommu_map_sg(struct iommu_domain *domain,
				   unsigned long iova, struct scatterlist *sg,
				   unsigned int nents, int prot)
{
	return -ENODEV;
}

static inline ssize_t iommu_map_sg_atomic(struct iommu_domain *domain,
				  unsigned long iova, struct scatterlist *sg,
				  unsigned int nents, int prot)
{
	return -ENODEV;
}

static inline void iommu_flush_iotlb_all(struct iommu_domain *domain)
{
}

static inline void iommu_iotlb_sync(struct iommu_domain *domain,
				  struct iommu_iotlb_gather *iotlb_gather)
{
}

static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, dma_addr_t iova)
{
	return 0;
}

static inline void iommu_set_fault_handler(struct iommu_domain *domain,
				iommu_fault_handler_t handler, void *token)
{
}

static inline void iommu_get_resv_regions(struct device *dev,
					struct list_head *list)
{
}

static inline void iommu_put_resv_regions(struct device *dev,
					struct list_head *list)
{
}

static inline int iommu_get_group_resv_regions(struct iommu_group *group,
					       struct list_head *head)
{
	return -ENODEV;
}

static inline void iommu_set_default_passthrough(bool cmd_line)
{
}

static inline void iommu_set_default_translated(bool cmd_line)
{
}

static inline bool iommu_default_passthrough(void)
{
	return true;
}

static inline int iommu_attach_group(struct iommu_domain *domain,
				     struct iommu_group *group)
{
	return -ENODEV;
}

static inline void iommu_detach_group(struct iommu_domain *domain,
				      struct iommu_group *group)
{
}

static inline struct iommu_group *iommu_group_alloc(void)
{
	return ERR_PTR(-ENODEV);
}

static inline void *iommu_group_get_iommudata(struct iommu_group *group)
{
	return NULL;
}

static inline void iommu_group_set_iommudata(struct iommu_group *group,
					     void *iommu_data,
					     void (*release)(void *iommu_data))
{
}

static inline int iommu_group_set_name(struct iommu_group *group,
				       const char *name)
{
	return -ENODEV;
}

static inline int iommu_group_add_device(struct iommu_group *group,
					 struct device *dev)
{
	return -ENODEV;
}

static inline void iommu_group_remove_device(struct device *dev)
{
}

static inline int iommu_group_for_each_dev(struct iommu_group *group,
					   void *data,
					   int (*fn)(struct device *, void *))
{
	return -ENODEV;
}

static inline struct iommu_group *iommu_group_get(struct device *dev)
{
	return NULL;
}

static inline void iommu_group_put(struct iommu_group *group)
{
}

static inline int iommu_group_register_notifier(struct iommu_group *group,
						struct notifier_block *nb)
{
	return -ENODEV;
}

static inline int iommu_group_unregister_notifier(struct iommu_group *group,
						  struct notifier_block *nb)
{
	return 0;
}

static inline
int iommu_register_device_fault_handler(struct device *dev,
					iommu_dev_fault_handler_t handler,
					void *data)
{
	return -ENODEV;
}

static inline int iommu_unregister_device_fault_handler(struct device *dev)
{
	return 0;
}

static inline
int iommu_report_device_fault(struct device *dev, struct iommu_fault_event *evt)
{
	return -ENODEV;
}

static inline int iommu_page_response(struct device *dev,
				      struct iommu_page_response *msg)
{
	return -ENODEV;
}

static inline int iommu_group_id(struct iommu_group *group)
{
	return -ENODEV;
}

static inline int iommu_set_pgtable_quirks(struct iommu_domain *domain,
		unsigned long quirks)
{
	return 0;
}

static inline int iommu_device_register(struct iommu_device *iommu,
					const struct iommu_ops *ops,
					struct device *hwdev)
{
	return -ENODEV;
}

static inline struct iommu_device *dev_to_iommu_device(struct device *dev)
{
	return NULL;
}

static inline void iommu_iotlb_gather_init(struct iommu_iotlb_gather *gather)
{
}

static inline void iommu_iotlb_gather_add_page(struct iommu_domain *domain,
					       struct iommu_iotlb_gather *gather,
					       unsigned long iova, size_t size)
{
}

static inline bool iommu_iotlb_gather_queued(struct iommu_iotlb_gather *gather)
{
	return false;
}

static inline void iommu_device_unregister(struct iommu_device *iommu)
{
}

static inline int  iommu_device_sysfs_add(struct iommu_device *iommu,
					  struct device *parent,
					  const struct attribute_group **groups,
					  const char *fmt, ...)
{
	return -ENODEV;
}

static inline void iommu_device_sysfs_remove(struct iommu_device *iommu)
{
}

static inline int iommu_device_link(struct device *dev, struct device *link)
{
	return -EINVAL;
}

static inline void iommu_device_unlink(struct device *dev, struct device *link)
{
}

static inline int iommu_fwspec_init(struct device *dev,
				    struct fwnode_handle *iommu_fwnode,
				    const struct iommu_ops *ops)
{
	return -ENODEV;
}

static inline void iommu_fwspec_free(struct device *dev)
{
}

static inline int iommu_fwspec_add_ids(struct device *dev, u32 *ids,
				       int num_ids)
{
	return -ENODEV;
}

static inline
const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode)
{
	return NULL;
}

static inline bool
iommu_dev_feature_enabled(struct device *dev, enum iommu_dev_features feat)
{
	return false;
}

static inline int
iommu_dev_enable_feature(struct device *dev, enum iommu_dev_features feat)
{
	return -ENODEV;
}

static inline int
iommu_dev_disable_feature(struct device *dev, enum iommu_dev_features feat)
{
	return -ENODEV;
}

static inline int
iommu_aux_attach_device(struct iommu_domain *domain, struct device *dev)
{
	return -ENODEV;
}

static inline void
iommu_aux_detach_device(struct iommu_domain *domain, struct device *dev)
{
}

static inline int
iommu_aux_get_pasid(struct iommu_domain *domain, struct device *dev)
{
	return -ENODEV;
}

static inline struct iommu_sva *
iommu_sva_bind_device(struct device *dev, struct mm_struct *mm, void *drvdata)
{
	return ERR_PTR(-ENODEV);
}

static inline void iommu_sva_unbind_device(struct iommu_sva *handle)
{
}

static inline u32 iommu_sva_get_pasid(struct iommu_sva *handle)
{
	return IOMMU_PASID_INVALID;
}

static inline int
iommu_uapi_cache_invalidate(struct iommu_domain *domain,
			    struct device *dev,
			    struct iommu_cache_invalidate_info *inv_info)
{
	return -ENODEV;
}

static inline int iommu_uapi_sva_bind_gpasid(struct iommu_domain *domain,
					     struct device *dev, void __user *udata)
{
	return -ENODEV;
}

static inline int iommu_uapi_sva_unbind_gpasid(struct iommu_domain *domain,
					       struct device *dev, void __user *udata)
{
	return -ENODEV;
}

static inline int iommu_sva_unbind_gpasid(struct iommu_domain *domain,
					  struct device *dev,
					  ioasid_t pasid)
{
	return -ENODEV;
}

static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)
{
	return NULL;
}
#endif /* CONFIG_IOMMU_API */

/**
 * iommu_map_sgtable - Map the given buffer to the IOMMU domain
 * @domain:	The IOMMU domain to perform the mapping
 * @iova:	The start address to map the buffer
 * @sgt:	The sg_table object describing the buffer
 * @prot:	IOMMU protection bits
 *
 * Creates a mapping at @iova for the buffer described by a scatterlist
 * stored in the given sg_table object in the provided IOMMU domain.
 */
static inline size_t iommu_map_sgtable(struct iommu_domain *domain,
			unsigned long iova, struct sg_table *sgt, int prot)
{
	return iommu_map_sg(domain, iova, sgt->sgl, sgt->orig_nents, prot);
}

#ifdef CONFIG_IOMMU_DEBUGFS
extern	struct dentry *iommu_debugfs_dir;
void iommu_debugfs_setup(void);
#else
static inline void iommu_debugfs_setup(void) {}
#endif

#endif /* __LINUX_IOMMU_H */

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