FM / linux

/usr/src/linux-headers-5.15.0-181/include/linux/

/usr/src/linux-headers-5.15.0-181/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	9197	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	16947	0644	edit dl rm
cpu.h	8485	0644	edit dl rm
cpufeature.h	1751	0644	edit dl rm
cpufreq.h	33551	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	33997	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	9406	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	20589	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	4372	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	2136	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	30006	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	6989	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	30416	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-5.15.0-181/include/linux/libata.h (69046B)

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  Copyright 2003-2005 Red Hat, Inc.  All rights reserved.
 *  Copyright 2003-2005 Jeff Garzik
 *
 *  libata documentation is available via 'make {ps|pdf}docs',
 *  as Documentation/driver-api/libata.rst
 */

#ifndef __LINUX_LIBATA_H__
#define __LINUX_LIBATA_H__

#include <linux/delay.h>
#include <linux/jiffies.h>
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
#include <linux/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
#include <scsi/scsi_host.h>
#include <linux/acpi.h>
#include <linux/cdrom.h>
#include <linux/sched.h>
#include <linux/async.h>

/*
 * Define if arch has non-standard setup.  This is a _PCI_ standard
 * not a legacy or ISA standard.
 */
#ifdef CONFIG_ATA_NONSTANDARD
#include <asm/libata-portmap.h>
#else
#define ATA_PRIMARY_IRQ(dev)	14
#define ATA_SECONDARY_IRQ(dev)	15
#endif

/*
 * compile-time options: to be removed as soon as all the drivers are
 * converted to the new debugging mechanism
 */
#undef ATA_DEBUG		/* debugging output */
#undef ATA_VERBOSE_DEBUG	/* yet more debugging output */
#undef ATA_IRQ_TRAP		/* define to ack screaming irqs */
#undef ATA_NDEBUG		/* define to disable quick runtime checks */

/* note: prints function name for you */
#ifdef ATA_DEBUG
#define DPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
#ifdef ATA_VERBOSE_DEBUG
#define VPRINTK(fmt, args...) printk(KERN_ERR "%s: " fmt, __func__, ## args)
#else
#define VPRINTK(fmt, args...)
#endif	/* ATA_VERBOSE_DEBUG */
#else
#define DPRINTK(fmt, args...)
#define VPRINTK(fmt, args...)
#endif	/* ATA_DEBUG */

#define ata_print_version_once(dev, version)			\
({								\
	static bool __print_once;				\
								\
	if (!__print_once) {					\
		__print_once = true;				\
		ata_print_version(dev, version);		\
	}							\
})

/* NEW: debug levels */
#define HAVE_LIBATA_MSG 1

enum {
	ATA_MSG_DRV	= 0x0001,
	ATA_MSG_INFO	= 0x0002,
	ATA_MSG_PROBE	= 0x0004,
	ATA_MSG_WARN	= 0x0008,
	ATA_MSG_MALLOC	= 0x0010,
	ATA_MSG_CTL	= 0x0020,
	ATA_MSG_INTR	= 0x0040,
	ATA_MSG_ERR	= 0x0080,
};

#define ata_msg_drv(p)    ((p)->msg_enable & ATA_MSG_DRV)
#define ata_msg_info(p)   ((p)->msg_enable & ATA_MSG_INFO)
#define ata_msg_probe(p)  ((p)->msg_enable & ATA_MSG_PROBE)
#define ata_msg_warn(p)   ((p)->msg_enable & ATA_MSG_WARN)
#define ata_msg_malloc(p) ((p)->msg_enable & ATA_MSG_MALLOC)
#define ata_msg_ctl(p)    ((p)->msg_enable & ATA_MSG_CTL)
#define ata_msg_intr(p)   ((p)->msg_enable & ATA_MSG_INTR)
#define ata_msg_err(p)    ((p)->msg_enable & ATA_MSG_ERR)

static inline u32 ata_msg_init(int dval, int default_msg_enable_bits)
{
	if (dval < 0 || dval >= (sizeof(u32) * 8))
		return default_msg_enable_bits; /* should be 0x1 - only driver info msgs */
	if (!dval)
		return 0;
	return (1 << dval) - 1;
}

/* defines only for the constants which don't work well as enums */
#define ATA_TAG_POISON		0xfafbfcfdU

enum {
	/* various global constants */
	LIBATA_MAX_PRD		= ATA_MAX_PRD / 2,
	LIBATA_DUMB_MAX_PRD	= ATA_MAX_PRD / 4,	/* Worst case */
	ATA_DEF_QUEUE		= 1,
	ATA_MAX_QUEUE		= 32,
	ATA_TAG_INTERNAL	= ATA_MAX_QUEUE,
	ATA_SHORT_PAUSE		= 16,

ATAPI_MAX_DRAIN		= 16 << 10,

ATA_ALL_DEVICES		= (1 << ATA_MAX_DEVICES) - 1,

ATA_SHT_EMULATED	= 1,
	ATA_SHT_THIS_ID		= -1,

/* struct ata_taskfile flags */
	ATA_TFLAG_LBA48		= (1 << 0), /* enable 48-bit LBA and "HOB" */
	ATA_TFLAG_ISADDR	= (1 << 1), /* enable r/w to nsect/lba regs */
	ATA_TFLAG_DEVICE	= (1 << 2), /* enable r/w to device reg */
	ATA_TFLAG_WRITE		= (1 << 3), /* data dir: host->dev==1 (write) */
	ATA_TFLAG_LBA		= (1 << 4), /* enable LBA */
	ATA_TFLAG_FUA		= (1 << 5), /* enable FUA */
	ATA_TFLAG_POLLING	= (1 << 6), /* set nIEN to 1 and use polling */

/* struct ata_device stuff */
	ATA_DFLAG_LBA		= (1 << 0), /* device supports LBA */
	ATA_DFLAG_LBA48		= (1 << 1), /* device supports LBA48 */
	ATA_DFLAG_CDB_INTR	= (1 << 2), /* device asserts INTRQ when ready for CDB */
	ATA_DFLAG_NCQ		= (1 << 3), /* device supports NCQ */
	ATA_DFLAG_FLUSH_EXT	= (1 << 4), /* do FLUSH_EXT instead of FLUSH */
	ATA_DFLAG_ACPI_PENDING	= (1 << 5), /* ACPI resume action pending */
	ATA_DFLAG_ACPI_FAILED	= (1 << 6), /* ACPI on devcfg has failed */
	ATA_DFLAG_AN		= (1 << 7), /* AN configured */
	ATA_DFLAG_TRUSTED	= (1 << 8), /* device supports trusted send/recv */
	ATA_DFLAG_DMADIR	= (1 << 10), /* device requires DMADIR */
	ATA_DFLAG_CFG_MASK	= (1 << 12) - 1,

ATA_DFLAG_PIO		= (1 << 12), /* device limited to PIO mode */
	ATA_DFLAG_NCQ_OFF	= (1 << 13), /* device limited to non-NCQ mode */
	ATA_DFLAG_SLEEPING	= (1 << 15), /* device is sleeping */
	ATA_DFLAG_DUBIOUS_XFER	= (1 << 16), /* data transfer not verified */
	ATA_DFLAG_NO_UNLOAD	= (1 << 17), /* device doesn't support unload */
	ATA_DFLAG_UNLOCK_HPA	= (1 << 18), /* unlock HPA */
	ATA_DFLAG_NCQ_SEND_RECV = (1 << 19), /* device supports NCQ SEND and RECV */
	ATA_DFLAG_NCQ_PRIO	= (1 << 20), /* device supports NCQ priority */
	ATA_DFLAG_NCQ_PRIO_ENABLE = (1 << 21), /* Priority cmds sent to dev */
	ATA_DFLAG_INIT_MASK	= (1 << 24) - 1,

ATA_DFLAG_DETACH	= (1 << 24),
	ATA_DFLAG_DETACHED	= (1 << 25),

ATA_DFLAG_DA		= (1 << 26), /* device supports Device Attention */
	ATA_DFLAG_DEVSLP	= (1 << 27), /* device supports Device Sleep */
	ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
	ATA_DFLAG_D_SENSE	= (1 << 29), /* Descriptor sense requested */
	ATA_DFLAG_ZAC		= (1 << 30), /* ZAC device */

ATA_DFLAG_FEATURES_MASK	= ATA_DFLAG_TRUSTED | ATA_DFLAG_DA | \
				  ATA_DFLAG_DEVSLP | ATA_DFLAG_NCQ_SEND_RECV | \
				  ATA_DFLAG_NCQ_PRIO,

ATA_DEV_UNKNOWN		= 0,	/* unknown device */
	ATA_DEV_ATA		= 1,	/* ATA device */
	ATA_DEV_ATA_UNSUP	= 2,	/* ATA device (unsupported) */
	ATA_DEV_ATAPI		= 3,	/* ATAPI device */
	ATA_DEV_ATAPI_UNSUP	= 4,	/* ATAPI device (unsupported) */
	ATA_DEV_PMP		= 5,	/* SATA port multiplier */
	ATA_DEV_PMP_UNSUP	= 6,	/* SATA port multiplier (unsupported) */
	ATA_DEV_SEMB		= 7,	/* SEMB */
	ATA_DEV_SEMB_UNSUP	= 8,	/* SEMB (unsupported) */
	ATA_DEV_ZAC		= 9,	/* ZAC device */
	ATA_DEV_ZAC_UNSUP	= 10,	/* ZAC device (unsupported) */
	ATA_DEV_NONE		= 11,	/* no device */

/* struct ata_link flags */
	/* NOTE: struct ata_force_param currently stores lflags in u16 */
	ATA_LFLAG_NO_HRST	= (1 << 1), /* avoid hardreset */
	ATA_LFLAG_NO_SRST	= (1 << 2), /* avoid softreset */
	ATA_LFLAG_ASSUME_ATA	= (1 << 3), /* assume ATA class */
	ATA_LFLAG_ASSUME_SEMB	= (1 << 4), /* assume SEMB class */
	ATA_LFLAG_ASSUME_CLASS	= ATA_LFLAG_ASSUME_ATA | ATA_LFLAG_ASSUME_SEMB,
	ATA_LFLAG_NO_RETRY	= (1 << 5), /* don't retry this link */
	ATA_LFLAG_DISABLED	= (1 << 6), /* link is disabled */
	ATA_LFLAG_SW_ACTIVITY	= (1 << 7), /* keep activity stats */
	ATA_LFLAG_NO_LPM	= (1 << 8), /* disable LPM on this link */
	ATA_LFLAG_RST_ONCE	= (1 << 9), /* limit recovery to one reset */
	ATA_LFLAG_CHANGED	= (1 << 10), /* LPM state changed on this link */
	ATA_LFLAG_NO_DEBOUNCE_DELAY = (1 << 11), /* no debounce delay on link resume */

/* struct ata_port flags */
	ATA_FLAG_SLAVE_POSS	= (1 << 0), /* host supports slave dev */
					    /* (doesn't imply presence) */
	ATA_FLAG_SATA		= (1 << 1),
	ATA_FLAG_NO_LPM		= (1 << 2), /* host not happy with LPM */
	ATA_FLAG_NO_LOG_PAGE	= (1 << 5), /* do not issue log page read */
	ATA_FLAG_NO_ATAPI	= (1 << 6), /* No ATAPI support */
	ATA_FLAG_PIO_DMA	= (1 << 7), /* PIO cmds via DMA */
	ATA_FLAG_PIO_LBA48	= (1 << 8), /* Host DMA engine is LBA28 only */
	ATA_FLAG_PIO_POLLING	= (1 << 9), /* use polling PIO if LLD
					     * doesn't handle PIO interrupts */
	ATA_FLAG_NCQ		= (1 << 10), /* host supports NCQ */
	ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */
	ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */
	ATA_FLAG_DEBUGMSG	= (1 << 13),
	ATA_FLAG_FPDMA_AA		= (1 << 14), /* driver supports Auto-Activate */
	ATA_FLAG_IGN_SIMPLEX	= (1 << 15), /* ignore SIMPLEX */
	ATA_FLAG_NO_IORDY	= (1 << 16), /* controller lacks iordy */
	ATA_FLAG_ACPI_SATA	= (1 << 17), /* need native SATA ACPI layout */
	ATA_FLAG_AN		= (1 << 18), /* controller supports AN */
	ATA_FLAG_PMP		= (1 << 19), /* controller supports PMP */
	ATA_FLAG_FPDMA_AUX	= (1 << 20), /* controller supports H2DFIS aux field */
	ATA_FLAG_EM		= (1 << 21), /* driver supports enclosure
					      * management */
	ATA_FLAG_SW_ACTIVITY	= (1 << 22), /* driver supports sw activity
					      * led */
	ATA_FLAG_NO_DIPM	= (1 << 23), /* host not happy with DIPM */
	ATA_FLAG_SAS_HOST	= (1 << 24), /* SAS host */

/* bits 24:31 of ap->flags are reserved for LLD specific flags */

/* struct ata_port pflags */
	ATA_PFLAG_EH_PENDING	= (1 << 0), /* EH pending */
	ATA_PFLAG_EH_IN_PROGRESS = (1 << 1), /* EH in progress */
	ATA_PFLAG_FROZEN	= (1 << 2), /* port is frozen */
	ATA_PFLAG_RECOVERED	= (1 << 3), /* recovery action performed */
	ATA_PFLAG_LOADING	= (1 << 4), /* boot/loading probe */
	ATA_PFLAG_SCSI_HOTPLUG	= (1 << 6), /* SCSI hotplug scheduled */
	ATA_PFLAG_INITIALIZING	= (1 << 7), /* being initialized, don't touch */
	ATA_PFLAG_RESETTING	= (1 << 8), /* reset in progress */
	ATA_PFLAG_UNLOADING	= (1 << 9), /* driver is being unloaded */
	ATA_PFLAG_UNLOADED	= (1 << 10), /* driver is unloaded */

ATA_PFLAG_SUSPENDED	= (1 << 17), /* port is suspended (power) */
	ATA_PFLAG_PM_PENDING	= (1 << 18), /* PM operation pending */
	ATA_PFLAG_INIT_GTM_VALID = (1 << 19), /* initial gtm data valid */

ATA_PFLAG_PIO32		= (1 << 20),  /* 32bit PIO */
	ATA_PFLAG_PIO32CHANGE	= (1 << 21),  /* 32bit PIO can be turned on/off */
	ATA_PFLAG_EXTERNAL	= (1 << 22),  /* eSATA/external port */

/* struct ata_queued_cmd flags */
	ATA_QCFLAG_ACTIVE	= (1 << 0), /* cmd not yet ack'd to scsi lyer */
	ATA_QCFLAG_DMAMAP	= (1 << 1), /* SG table is DMA mapped */
	ATA_QCFLAG_IO		= (1 << 3), /* standard IO command */
	ATA_QCFLAG_RESULT_TF	= (1 << 4), /* result TF requested */
	ATA_QCFLAG_CLEAR_EXCL	= (1 << 5), /* clear excl_link on completion */
	ATA_QCFLAG_QUIET	= (1 << 6), /* don't report device error */
	ATA_QCFLAG_RETRY	= (1 << 7), /* retry after failure */

ATA_QCFLAG_FAILED	= (1 << 16), /* cmd failed and is owned by EH */
	ATA_QCFLAG_SENSE_VALID	= (1 << 17), /* sense data valid */
	ATA_QCFLAG_EH_SCHEDULED = (1 << 18), /* EH scheduled (obsolete) */

/* host set flags */
	ATA_HOST_SIMPLEX	= (1 << 0),	/* Host is simplex, one DMA channel per host only */
	ATA_HOST_STARTED	= (1 << 1),	/* Host started */
	ATA_HOST_PARALLEL_SCAN	= (1 << 2),	/* Ports on this host can be scanned in parallel */
	ATA_HOST_IGNORE_ATA	= (1 << 3),	/* Ignore ATA devices on this host. */

ATA_HOST_NO_PART	= (1 << 4), /* Host does not support partial */
	ATA_HOST_NO_SSC		= (1 << 5), /* Host does not support slumber */
	ATA_HOST_NO_DEVSLP	= (1 << 6), /* Host does not support devslp */

/* bits 24:31 of host->flags are reserved for LLD specific flags */

/* various lengths of time */
	ATA_TMOUT_BOOT		= 30000,	/* heuristic */
	ATA_TMOUT_BOOT_QUICK	=  7000,	/* heuristic */
	ATA_TMOUT_INTERNAL_QUICK = 5000,
	ATA_TMOUT_MAX_PARK	= 30000,

/*
	 * GoVault needs 2s and iVDR disk HHD424020F7SV00 800ms.  2s
	 * is too much without parallel probing.  Use 2s if parallel
	 * probing is available, 800ms otherwise.
	 */
	ATA_TMOUT_FF_WAIT_LONG	=  2000,
	ATA_TMOUT_FF_WAIT	=   800,

/* Spec mandates to wait for ">= 2ms" before checking status
	 * after reset.  We wait 150ms, because that was the magic
	 * delay used for ATAPI devices in Hale Landis's ATADRVR, for
	 * the period of time between when the ATA command register is
	 * written, and then status is checked.  Because waiting for
	 * "a while" before checking status is fine, post SRST, we
	 * perform this magic delay here as well.
	 *
	 * Old drivers/ide uses the 2mS rule and then waits for ready.
	 */
	ATA_WAIT_AFTER_RESET	=  150,

/* If PMP is supported, we have to do follow-up SRST.  As some
	 * PMPs don't send D2H Reg FIS after hardreset, LLDs are
	 * advised to wait only for the following duration before
	 * doing SRST.
	 */
	ATA_TMOUT_PMP_SRST_WAIT	= 10000,

/* When the LPM policy is set to ATA_LPM_MAX_POWER, there might
	 * be a spurious PHY event, so ignore the first PHY event that
	 * occurs within 10s after the policy change.
	 */
	ATA_TMOUT_SPURIOUS_PHY	= 10000,

/* ATA bus states */
	BUS_UNKNOWN		= 0,
	BUS_DMA			= 1,
	BUS_IDLE		= 2,
	BUS_NOINTR		= 3,
	BUS_NODATA		= 4,
	BUS_TIMER		= 5,
	BUS_PIO			= 6,
	BUS_EDD			= 7,
	BUS_IDENTIFY		= 8,
	BUS_PACKET		= 9,

/* SATA port states */
	PORT_UNKNOWN		= 0,
	PORT_ENABLED		= 1,
	PORT_DISABLED		= 2,

/* encoding various smaller bitmaps into a single
	 * unsigned long bitmap
	 */
	ATA_NR_PIO_MODES	= 7,
	ATA_NR_MWDMA_MODES	= 5,
	ATA_NR_UDMA_MODES	= 8,

ATA_SHIFT_PIO		= 0,
	ATA_SHIFT_MWDMA		= ATA_SHIFT_PIO + ATA_NR_PIO_MODES,
	ATA_SHIFT_UDMA		= ATA_SHIFT_MWDMA + ATA_NR_MWDMA_MODES,
	ATA_SHIFT_PRIO		= 6,

ATA_PRIO_HIGH		= 2,
	/* size of buffer to pad xfers ending on unaligned boundaries */
	ATA_DMA_PAD_SZ		= 4,

/* ering size */
	ATA_ERING_SIZE		= 32,

/* return values for ->qc_defer */
	ATA_DEFER_LINK		= 1,
	ATA_DEFER_PORT		= 2,

/* desc_len for ata_eh_info and context */
	ATA_EH_DESC_LEN		= 80,

/* reset / recovery action types */
	ATA_EH_REVALIDATE	= (1 << 0),
	ATA_EH_SOFTRESET	= (1 << 1), /* meaningful only in ->prereset */
	ATA_EH_HARDRESET	= (1 << 2), /* meaningful only in ->prereset */
	ATA_EH_RESET		= ATA_EH_SOFTRESET | ATA_EH_HARDRESET,
	ATA_EH_ENABLE_LINK	= (1 << 3),
	ATA_EH_PARK		= (1 << 5), /* unload heads and stop I/O */

ATA_EH_PERDEV_MASK	= ATA_EH_REVALIDATE | ATA_EH_PARK,
	ATA_EH_ALL_ACTIONS	= ATA_EH_REVALIDATE | ATA_EH_RESET |
				  ATA_EH_ENABLE_LINK,

/* ata_eh_info->flags */
	ATA_EHI_HOTPLUGGED	= (1 << 0),  /* could have been hotplugged */
	ATA_EHI_NO_AUTOPSY	= (1 << 2),  /* no autopsy */
	ATA_EHI_QUIET		= (1 << 3),  /* be quiet */
	ATA_EHI_NO_RECOVERY	= (1 << 4),  /* no recovery */

ATA_EHI_DID_SOFTRESET	= (1 << 16), /* already soft-reset this port */
	ATA_EHI_DID_HARDRESET	= (1 << 17), /* already soft-reset this port */
	ATA_EHI_PRINTINFO	= (1 << 18), /* print configuration info */
	ATA_EHI_SETMODE		= (1 << 19), /* configure transfer mode */
	ATA_EHI_POST_SETMODE	= (1 << 20), /* revalidating after setmode */

ATA_EHI_DID_RESET	= ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,

/* mask of flags to transfer *to* the slave link */
	ATA_EHI_TO_SLAVE_MASK	= ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,

/* max tries if error condition is still set after ->error_handler */
	ATA_EH_MAX_TRIES	= 5,

/* sometimes resuming a link requires several retries */
	ATA_LINK_RESUME_TRIES	= 5,

/* how hard are we gonna try to probe/recover devices */
	ATA_PROBE_MAX_TRIES	= 3,
	ATA_EH_DEV_TRIES	= 3,
	ATA_EH_PMP_TRIES	= 5,
	ATA_EH_PMP_LINK_TRIES	= 3,

SATA_PMP_RW_TIMEOUT	= 3000,		/* PMP read/write timeout */

/* This should match the actual table size of
	 * ata_eh_cmd_timeout_table in libata-eh.c.
	 */
	ATA_EH_CMD_TIMEOUT_TABLE_SIZE = 7,

/* Horkage types. May be set by libata or controller on drives
	   (some horkage may be drive/controller pair dependent */

ATA_HORKAGE_DIAGNOSTIC	= (1 << 0),	/* Failed boot diag */
	ATA_HORKAGE_NODMA	= (1 << 1),	/* DMA problems */
	ATA_HORKAGE_NONCQ	= (1 << 2),	/* Don't use NCQ */
	ATA_HORKAGE_MAX_SEC_128	= (1 << 3),	/* Limit max sects to 128 */
	ATA_HORKAGE_BROKEN_HPA	= (1 << 4),	/* Broken HPA */
	ATA_HORKAGE_DISABLE	= (1 << 5),	/* Disable it */
	ATA_HORKAGE_HPA_SIZE	= (1 << 6),	/* native size off by one */
	ATA_HORKAGE_IVB		= (1 << 8),	/* cbl det validity bit bugs */
	ATA_HORKAGE_STUCK_ERR	= (1 << 9),	/* stuck ERR on next PACKET */
	ATA_HORKAGE_BRIDGE_OK	= (1 << 10),	/* no bridge limits */
	ATA_HORKAGE_ATAPI_MOD16_DMA = (1 << 11), /* use ATAPI DMA for commands
						    not multiple of 16 bytes */
	ATA_HORKAGE_FIRMWARE_WARN = (1 << 12),	/* firmware update warning */
	ATA_HORKAGE_1_5_GBPS	= (1 << 13),	/* force 1.5 Gbps */
	ATA_HORKAGE_NOSETXFER	= (1 << 14),	/* skip SETXFER, SATA only */
	ATA_HORKAGE_BROKEN_FPDMA_AA	= (1 << 15),	/* skip AA */
	ATA_HORKAGE_DUMP_ID	= (1 << 16),	/* dump IDENTIFY data */
	ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17),	/* Set max sects to 65535 */
	ATA_HORKAGE_ATAPI_DMADIR = (1 << 18),	/* device requires dmadir */
	ATA_HORKAGE_NO_NCQ_TRIM	= (1 << 19),	/* don't use queued TRIM */
	ATA_HORKAGE_NOLPM	= (1 << 20),	/* don't use LPM */
	ATA_HORKAGE_WD_BROKEN_LPM = (1 << 21),	/* some WDs have broken LPM */
	ATA_HORKAGE_ZERO_AFTER_TRIM = (1 << 22),/* guarantees zero after trim */
	ATA_HORKAGE_NO_DMA_LOG	= (1 << 23),	/* don't use DMA for log read */
	ATA_HORKAGE_NOTRIM	= (1 << 24),	/* don't use TRIM */
	ATA_HORKAGE_MAX_SEC_1024 = (1 << 25),	/* Limit max sects to 1024 */
	ATA_HORKAGE_MAX_TRIM_128M = (1 << 26),	/* Limit max trim size to 128M */
	ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27),	/* Disable NCQ on ATI chipset */

/* DMA mask for user DMA control: User visible values; DO NOT
	    renumber */
	ATA_DMA_MASK_ATA	= (1 << 0),	/* DMA on ATA Disk */
	ATA_DMA_MASK_ATAPI	= (1 << 1),	/* DMA on ATAPI */
	ATA_DMA_MASK_CFA	= (1 << 2),	/* DMA on CF Card */

/* ATAPI command types */
	ATAPI_READ		= 0,		/* READs */
	ATAPI_WRITE		= 1,		/* WRITEs */
	ATAPI_READ_CD		= 2,		/* READ CD [MSF] */
	ATAPI_PASS_THRU		= 3,		/* SAT pass-thru */
	ATAPI_MISC		= 4,		/* the rest */

/* Timing constants */
	ATA_TIMING_SETUP	= (1 << 0),
	ATA_TIMING_ACT8B	= (1 << 1),
	ATA_TIMING_REC8B	= (1 << 2),
	ATA_TIMING_CYC8B	= (1 << 3),
	ATA_TIMING_8BIT		= ATA_TIMING_ACT8B | ATA_TIMING_REC8B |
				  ATA_TIMING_CYC8B,
	ATA_TIMING_ACTIVE	= (1 << 4),
	ATA_TIMING_RECOVER	= (1 << 5),
	ATA_TIMING_DMACK_HOLD	= (1 << 6),
	ATA_TIMING_CYCLE	= (1 << 7),
	ATA_TIMING_UDMA		= (1 << 8),
	ATA_TIMING_ALL		= ATA_TIMING_SETUP | ATA_TIMING_ACT8B |
				  ATA_TIMING_REC8B | ATA_TIMING_CYC8B |
				  ATA_TIMING_ACTIVE | ATA_TIMING_RECOVER |
				  ATA_TIMING_DMACK_HOLD | ATA_TIMING_CYCLE |
				  ATA_TIMING_UDMA,

/* ACPI constants */
	ATA_ACPI_FILTER_SETXFER	= 1 << 0,
	ATA_ACPI_FILTER_LOCK	= 1 << 1,
	ATA_ACPI_FILTER_DIPM	= 1 << 2,
	ATA_ACPI_FILTER_FPDMA_OFFSET = 1 << 3,	/* FPDMA non-zero offset */
	ATA_ACPI_FILTER_FPDMA_AA = 1 << 4,	/* FPDMA auto activate */

ATA_ACPI_FILTER_DEFAULT	= ATA_ACPI_FILTER_SETXFER |
				  ATA_ACPI_FILTER_LOCK |
				  ATA_ACPI_FILTER_DIPM,
};

enum ata_xfer_mask {
	ATA_MASK_PIO		= ((1LU << ATA_NR_PIO_MODES) - 1)
					<< ATA_SHIFT_PIO,
	ATA_MASK_MWDMA		= ((1LU << ATA_NR_MWDMA_MODES) - 1)
					<< ATA_SHIFT_MWDMA,
	ATA_MASK_UDMA		= ((1LU << ATA_NR_UDMA_MODES) - 1)
					<< ATA_SHIFT_UDMA,
};

enum hsm_task_states {
	HSM_ST_IDLE,		/* no command on going */
	HSM_ST_FIRST,		/* (waiting the device to)
				   write CDB or first data block */
	HSM_ST,			/* (waiting the device to) transfer data */
	HSM_ST_LAST,		/* (waiting the device to) complete command */
	HSM_ST_ERR,		/* error */
};

enum ata_completion_errors {
	AC_ERR_OK		= 0,	    /* no error */
	AC_ERR_DEV		= (1 << 0), /* device reported error */
	AC_ERR_HSM		= (1 << 1), /* host state machine violation */
	AC_ERR_TIMEOUT		= (1 << 2), /* timeout */
	AC_ERR_MEDIA		= (1 << 3), /* media error */
	AC_ERR_ATA_BUS		= (1 << 4), /* ATA bus error */
	AC_ERR_HOST_BUS		= (1 << 5), /* host bus error */
	AC_ERR_SYSTEM		= (1 << 6), /* system error */
	AC_ERR_INVALID		= (1 << 7), /* invalid argument */
	AC_ERR_OTHER		= (1 << 8), /* unknown */
	AC_ERR_NODEV_HINT	= (1 << 9), /* polling device detection hint */
	AC_ERR_NCQ		= (1 << 10), /* marker for offending NCQ qc */
};

/*
 * Link power management policy: If you alter this, you also need to
 * alter libata-scsi.c (for the ascii descriptions)
 */
enum ata_lpm_policy {
	ATA_LPM_UNKNOWN,
	ATA_LPM_MAX_POWER,
	ATA_LPM_MED_POWER,
	ATA_LPM_MED_POWER_WITH_DIPM, /* Med power + DIPM as win IRST does */
	ATA_LPM_MIN_POWER_WITH_PARTIAL, /* Min Power + partial and slumber */
	ATA_LPM_MIN_POWER, /* Min power + no partial (slumber only) */
};

enum ata_lpm_hints {
	ATA_LPM_EMPTY		= (1 << 0), /* port empty/probing */
	ATA_LPM_HIPM		= (1 << 1), /* may use HIPM */
	ATA_LPM_WAKE_ONLY	= (1 << 2), /* only wake up link */
};

/* forward declarations */
struct scsi_device;
struct ata_port_operations;
struct ata_port;
struct ata_link;
struct ata_queued_cmd;

/* typedefs */
typedef void (*ata_qc_cb_t) (struct ata_queued_cmd *qc);
typedef int (*ata_prereset_fn_t)(struct ata_link *link, unsigned long deadline);
typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
			      unsigned long deadline);
typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);

extern struct device_attribute dev_attr_unload_heads;
#ifdef CONFIG_SATA_HOST
extern struct device_attribute dev_attr_link_power_management_policy;
extern struct device_attribute dev_attr_ncq_prio_supported;
extern struct device_attribute dev_attr_ncq_prio_enable;
extern struct device_attribute dev_attr_em_message_type;
extern struct device_attribute dev_attr_em_message;
extern struct device_attribute dev_attr_sw_activity;
#endif

enum sw_activity {
	OFF,
	BLINK_ON,
	BLINK_OFF,
};

struct ata_taskfile {
	unsigned long		flags;		/* ATA_TFLAG_xxx */
	u8			protocol;	/* ATA_PROT_xxx */

u8			ctl;		/* control reg */

u8			hob_feature;	/* additional data */
	u8			hob_nsect;	/* to support LBA48 */
	u8			hob_lbal;
	u8			hob_lbam;
	u8			hob_lbah;

union {
		u8		error;
		u8		feature;
	};
	u8			nsect;
	u8			lbal;
	u8			lbam;
	u8			lbah;

u8			device;

union {
		u8		status;
		u8		command;
	};

u32			auxiliary;	/* auxiliary field */
						/* from SATA 3.1 and */
						/* ATA-8 ACS-3 */
};

#ifdef CONFIG_ATA_SFF
struct ata_ioports {
	void __iomem		*cmd_addr;
	void __iomem		*data_addr;
	void __iomem		*error_addr;
	void __iomem		*feature_addr;
	void __iomem		*nsect_addr;
	void __iomem		*lbal_addr;
	void __iomem		*lbam_addr;
	void __iomem		*lbah_addr;
	void __iomem		*device_addr;
	void __iomem		*status_addr;
	void __iomem		*command_addr;
	void __iomem		*altstatus_addr;
	void __iomem		*ctl_addr;
#ifdef CONFIG_ATA_BMDMA
	void __iomem		*bmdma_addr;
#endif /* CONFIG_ATA_BMDMA */
	void __iomem		*scr_addr;
};
#endif /* CONFIG_ATA_SFF */

struct ata_host {
	spinlock_t		lock;
	struct device 		*dev;
	void __iomem * const	*iomap;
	unsigned int		n_ports;
	unsigned int		n_tags;			/* nr of NCQ tags */
	void			*private_data;
	struct ata_port_operations *ops;
	unsigned long		flags;
	struct kref		kref;

struct mutex		eh_mutex;
	struct task_struct	*eh_owner;

struct ata_port		*simplex_claimed;	/* channel owning the DMA */
	struct ata_port		*ports[];
};

struct ata_queued_cmd {
	struct ata_port		*ap;
	struct ata_device	*dev;

struct scsi_cmnd	*scsicmd;
	void			(*scsidone)(struct scsi_cmnd *);

struct ata_taskfile	tf;
	u8			cdb[ATAPI_CDB_LEN];

unsigned long		flags;		/* ATA_QCFLAG_xxx */
	unsigned int		tag;		/* libata core tag */
	unsigned int		hw_tag;		/* driver tag */
	unsigned int		n_elem;
	unsigned int		orig_n_elem;

int			dma_dir;

unsigned int		sect_size;

unsigned int		nbytes;
	unsigned int		extrabytes;
	unsigned int		curbytes;

struct scatterlist	sgent;

struct scatterlist	*sg;

struct scatterlist	*cursg;
	unsigned int		cursg_ofs;

unsigned int		err_mask;
	struct ata_taskfile	result_tf;
	ata_qc_cb_t		complete_fn;

void			*private_data;
	void			*lldd_task;
};

struct ata_port_stats {
	unsigned long		unhandled_irq;
	unsigned long		idle_irq;
	unsigned long		rw_reqbuf;
};

struct ata_ering_entry {
	unsigned int		eflags;
	unsigned int		err_mask;
	u64			timestamp;
};

struct ata_ering {
	int			cursor;
	struct ata_ering_entry	ring[ATA_ERING_SIZE];
};

struct ata_device {
	struct ata_link		*link;
	unsigned int		devno;		/* 0 or 1 */
	unsigned int		horkage;	/* List of broken features */
	unsigned long		flags;		/* ATA_DFLAG_xxx */
	struct scsi_device	*sdev;		/* attached SCSI device */
	void			*private_data;
#ifdef CONFIG_ATA_ACPI
	union acpi_object	*gtf_cache;
	unsigned int		gtf_filter;
#endif
#ifdef CONFIG_SATA_ZPODD
	void			*zpodd;
#endif
	struct device		tdev;
	/* n_sector is CLEAR_BEGIN, read comment above CLEAR_BEGIN */
	u64			n_sectors;	/* size of device, if ATA */
	u64			n_native_sectors; /* native size, if ATA */
	unsigned int		class;		/* ATA_DEV_xxx */
	unsigned long		unpark_deadline;

u8			pio_mode;
	u8			dma_mode;
	u8			xfer_mode;
	unsigned int		xfer_shift;	/* ATA_SHIFT_xxx */

unsigned int		multi_count;	/* sectors count for
						   READ/WRITE MULTIPLE */
	unsigned int		max_sectors;	/* per-device max sectors */
	unsigned int		cdb_len;

/* per-dev xfer mask */
	unsigned long		pio_mask;
	unsigned long		mwdma_mask;
	unsigned long		udma_mask;

/* for CHS addressing */
	u16			cylinders;	/* Number of cylinders */
	u16			heads;		/* Number of heads */
	u16			sectors;	/* Number of sectors per track */

union {
		u16		id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */
		u32		gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */
	} ____cacheline_aligned;

/* DEVSLP Timing Variables from Identify Device Data Log */
	u8			devslp_timing[ATA_LOG_DEVSLP_SIZE];

/* NCQ send and receive log subcommand support */
	u8			ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
	u8			ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_SIZE];

/* ZAC zone configuration */
	u32			zac_zoned_cap;
	u32			zac_zones_optimal_open;
	u32			zac_zones_optimal_nonseq;
	u32			zac_zones_max_open;

/* error history */
	int			spdn_cnt;
	/* ering is CLEAR_END, read comment above CLEAR_END */
	struct ata_ering	ering;
};

/* Fields between ATA_DEVICE_CLEAR_BEGIN and ATA_DEVICE_CLEAR_END are
 * cleared to zero on ata_dev_init().
 */
#define ATA_DEVICE_CLEAR_BEGIN		offsetof(struct ata_device, n_sectors)
#define ATA_DEVICE_CLEAR_END		offsetof(struct ata_device, ering)

struct ata_eh_info {
	struct ata_device	*dev;		/* offending device */
	u32			serror;		/* SError from LLDD */
	unsigned int		err_mask;	/* port-wide err_mask */
	unsigned int		action;		/* ATA_EH_* action mask */
	unsigned int		dev_action[ATA_MAX_DEVICES]; /* dev EH action */
	unsigned int		flags;		/* ATA_EHI_* flags */

unsigned int		probe_mask;

char			desc[ATA_EH_DESC_LEN];
	int			desc_len;
};

struct ata_eh_context {
	struct ata_eh_info	i;
	int			tries[ATA_MAX_DEVICES];
	int			cmd_timeout_idx[ATA_MAX_DEVICES]
					       [ATA_EH_CMD_TIMEOUT_TABLE_SIZE];
	unsigned int		classes[ATA_MAX_DEVICES];
	unsigned int		did_probe_mask;
	unsigned int		unloaded_mask;
	unsigned int		saved_ncq_enabled;
	u8			saved_xfer_mode[ATA_MAX_DEVICES];
	/* timestamp for the last reset attempt or success */
	unsigned long		last_reset;
};

struct ata_acpi_drive
{
	u32 pio;
	u32 dma;
} __packed;

struct ata_acpi_gtm {
	struct ata_acpi_drive drive[2];
	u32 flags;
} __packed;

struct ata_link {
	struct ata_port		*ap;
	int			pmp;		/* port multiplier port # */

struct device		tdev;
	unsigned int		active_tag;	/* active tag on this link */
	u32			sactive;	/* active NCQ commands */

unsigned int		flags;		/* ATA_LFLAG_xxx */

u32			saved_scontrol;	/* SControl on probe */
	unsigned int		hw_sata_spd_limit;
	unsigned int		sata_spd_limit;
	unsigned int		sata_spd;	/* current SATA PHY speed */
	enum ata_lpm_policy	lpm_policy;

/* record runtime error info, protected by host_set lock */
	struct ata_eh_info	eh_info;
	/* EH context */
	struct ata_eh_context	eh_context;

struct ata_device	device[ATA_MAX_DEVICES];

unsigned long		last_lpm_change; /* when last LPM change happened */
};
#define ATA_LINK_CLEAR_BEGIN		offsetof(struct ata_link, active_tag)
#define ATA_LINK_CLEAR_END		offsetof(struct ata_link, device[0])

struct ata_port {
	struct Scsi_Host	*scsi_host; /* our co-allocated scsi host */
	struct ata_port_operations *ops;
	spinlock_t		*lock;
	/* Flags owned by the EH context. Only EH should touch these once the
	   port is active */
	unsigned long		flags;	/* ATA_FLAG_xxx */
	/* Flags that change dynamically, protected by ap->lock */
	unsigned int		pflags; /* ATA_PFLAG_xxx */
	unsigned int		print_id; /* user visible unique port ID */
	unsigned int            local_port_no; /* host local port num */
	unsigned int		port_no; /* 0 based port no. inside the host */

#ifdef CONFIG_ATA_SFF
	struct ata_ioports	ioaddr;	/* ATA cmd/ctl/dma register blocks */
	u8			ctl;	/* cache of ATA control register */
	u8			last_ctl;	/* Cache last written value */
	struct ata_link*	sff_pio_task_link; /* link currently used */
	struct delayed_work	sff_pio_task;
#ifdef CONFIG_ATA_BMDMA
	struct ata_bmdma_prd	*bmdma_prd;	/* BMDMA SG list */
	dma_addr_t		bmdma_prd_dma;	/* and its DMA mapping */
#endif /* CONFIG_ATA_BMDMA */
#endif /* CONFIG_ATA_SFF */

unsigned int		pio_mask;
	unsigned int		mwdma_mask;
	unsigned int		udma_mask;
	unsigned int		cbl;	/* cable type; ATA_CBL_xxx */

struct ata_queued_cmd	qcmd[ATA_MAX_QUEUE + 1];
	unsigned long		sas_tag_allocated; /* for sas tag allocation only */
	u64			qc_active;
	int			nr_active_links; /* #links with active qcs */
	unsigned int		sas_last_tag;	/* track next tag hw expects */

struct ata_link		link;		/* host default link */
	struct ata_link		*slave_link;	/* see ata_slave_link_init() */

int			nr_pmp_links;	/* nr of available PMP links */
	struct ata_link		*pmp_link;	/* array of PMP links */
	struct ata_link		*excl_link;	/* for PMP qc exclusion */

struct ata_port_stats	stats;
	struct ata_host		*host;
	struct device 		*dev;
	struct device		tdev;

struct mutex		scsi_scan_mutex;
	struct delayed_work	hotplug_task;
	struct delayed_work	scsi_rescan_task;

unsigned int		hsm_task_state;

u32			msg_enable;
	struct list_head	eh_done_q;
	wait_queue_head_t	eh_wait_q;
	int			eh_tries;
	struct completion	park_req_pending;

pm_message_t		pm_mesg;
	enum ata_lpm_policy	target_lpm_policy;

struct timer_list	fastdrain_timer;
	unsigned long		fastdrain_cnt;

async_cookie_t		cookie;

int			em_message_type;
	void			*private_data;

#ifdef CONFIG_ATA_ACPI
	struct ata_acpi_gtm	__acpi_init_gtm; /* use ata_acpi_init_gtm() */
#endif
	/* owned by EH */
	u8			sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
};

/* The following initializer overrides a method to NULL whether one of
 * its parent has the method defined or not.  This is equivalent to
 * ERR_PTR(-ENOENT).  Unfortunately, ERR_PTR doesn't render a constant
 * expression and thus can't be used as an initializer.
 */
#define ATA_OP_NULL		(void *)(unsigned long)(-ENOENT)

struct ata_port_operations {
	/*
	 * Command execution
	 */
	int (*qc_defer)(struct ata_queued_cmd *qc);
	int (*check_atapi_dma)(struct ata_queued_cmd *qc);
	enum ata_completion_errors (*qc_prep)(struct ata_queued_cmd *qc);
	unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
	bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);

/*
	 * Configuration and exception handling
	 */
	int  (*cable_detect)(struct ata_port *ap);
	unsigned long (*mode_filter)(struct ata_device *dev, unsigned long xfer_mask);
	void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
	void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
	int  (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
	unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);

void (*dev_config)(struct ata_device *dev);

void (*freeze)(struct ata_port *ap);
	void (*thaw)(struct ata_port *ap);
	ata_prereset_fn_t	prereset;
	ata_reset_fn_t		softreset;
	ata_reset_fn_t		hardreset;
	ata_postreset_fn_t	postreset;
	ata_prereset_fn_t	pmp_prereset;
	ata_reset_fn_t		pmp_softreset;
	ata_reset_fn_t		pmp_hardreset;
	ata_postreset_fn_t	pmp_postreset;
	void (*error_handler)(struct ata_port *ap);
	void (*lost_interrupt)(struct ata_port *ap);
	void (*post_internal_cmd)(struct ata_queued_cmd *qc);
	void (*sched_eh)(struct ata_port *ap);
	void (*end_eh)(struct ata_port *ap);

/*
	 * Optional features
	 */
	int  (*scr_read)(struct ata_link *link, unsigned int sc_reg, u32 *val);
	int  (*scr_write)(struct ata_link *link, unsigned int sc_reg, u32 val);
	void (*pmp_attach)(struct ata_port *ap);
	void (*pmp_detach)(struct ata_port *ap);
	int  (*set_lpm)(struct ata_link *link, enum ata_lpm_policy policy,
			unsigned hints);

/*
	 * Start, stop, suspend and resume
	 */
	int  (*port_suspend)(struct ata_port *ap, pm_message_t mesg);
	int  (*port_resume)(struct ata_port *ap);
	int  (*port_start)(struct ata_port *ap);
	void (*port_stop)(struct ata_port *ap);
	void (*host_stop)(struct ata_host *host);

#ifdef CONFIG_ATA_SFF
	/*
	 * SFF / taskfile oriented ops
	 */
	void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
	void (*sff_set_devctl)(struct ata_port *ap, u8 ctl);
	u8   (*sff_check_status)(struct ata_port *ap);
	u8   (*sff_check_altstatus)(struct ata_port *ap);
	void (*sff_tf_load)(struct ata_port *ap, const struct ata_taskfile *tf);
	void (*sff_tf_read)(struct ata_port *ap, struct ata_taskfile *tf);
	void (*sff_exec_command)(struct ata_port *ap,
				 const struct ata_taskfile *tf);
	unsigned int (*sff_data_xfer)(struct ata_queued_cmd *qc,
			unsigned char *buf, unsigned int buflen, int rw);
	void (*sff_irq_on)(struct ata_port *);
	bool (*sff_irq_check)(struct ata_port *);
	void (*sff_irq_clear)(struct ata_port *);
	void (*sff_drain_fifo)(struct ata_queued_cmd *qc);

#ifdef CONFIG_ATA_BMDMA
	void (*bmdma_setup)(struct ata_queued_cmd *qc);
	void (*bmdma_start)(struct ata_queued_cmd *qc);
	void (*bmdma_stop)(struct ata_queued_cmd *qc);
	u8   (*bmdma_status)(struct ata_port *ap);
#endif /* CONFIG_ATA_BMDMA */
#endif /* CONFIG_ATA_SFF */

ssize_t (*em_show)(struct ata_port *ap, char *buf);
	ssize_t (*em_store)(struct ata_port *ap, const char *message,
			    size_t size);
	ssize_t (*sw_activity_show)(struct ata_device *dev, char *buf);
	ssize_t (*sw_activity_store)(struct ata_device *dev,
				     enum sw_activity val);
	ssize_t (*transmit_led_message)(struct ata_port *ap, u32 state,
					ssize_t size);

/*
	 * Obsolete
	 */
	void (*phy_reset)(struct ata_port *ap);
	void (*eng_timeout)(struct ata_port *ap);

/*
	 * ->inherits must be the last field and all the preceding
	 * fields must be pointers.
	 */
	const struct ata_port_operations	*inherits;
};

struct ata_port_info {
	unsigned long		flags;
	unsigned long		link_flags;
	unsigned long		pio_mask;
	unsigned long		mwdma_mask;
	unsigned long		udma_mask;
	struct ata_port_operations *port_ops;
	void 			*private_data;
};

struct ata_timing {
	unsigned short mode;		/* ATA mode */
	unsigned short setup;		/* t1 */
	unsigned short act8b;		/* t2 for 8-bit I/O */
	unsigned short rec8b;		/* t2i for 8-bit I/O */
	unsigned short cyc8b;		/* t0 for 8-bit I/O */
	unsigned short active;		/* t2 or tD */
	unsigned short recover;		/* t2i or tK */
	unsigned short dmack_hold;	/* tj */
	unsigned short cycle;		/* t0 */
	unsigned short udma;		/* t2CYCTYP/2 */
};

/*
 * Core layer - drivers/ata/libata-core.c
 */
extern struct ata_port_operations ata_dummy_port_ops;
extern const struct ata_port_info ata_dummy_port_info;

static inline bool ata_is_atapi(u8 prot)
{
	return prot & ATA_PROT_FLAG_ATAPI;
}

static inline bool ata_is_pio(u8 prot)
{
	return prot & ATA_PROT_FLAG_PIO;
}

static inline bool ata_is_dma(u8 prot)
{
	return prot & ATA_PROT_FLAG_DMA;
}

static inline bool ata_is_ncq(u8 prot)
{
	return prot & ATA_PROT_FLAG_NCQ;
}

static inline bool ata_is_data(u8 prot)
{
	return prot & (ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA);
}

static inline int is_multi_taskfile(struct ata_taskfile *tf)
{
	return (tf->command == ATA_CMD_READ_MULTI) ||
	       (tf->command == ATA_CMD_WRITE_MULTI) ||
	       (tf->command == ATA_CMD_READ_MULTI_EXT) ||
	       (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
	       (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
}

static inline int ata_port_is_dummy(struct ata_port *ap)
{
	return ap->ops == &ata_dummy_port_ops;
}

extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
extern int ata_wait_after_reset(struct ata_link *link, unsigned long deadline,
				int (*check_ready)(struct ata_link *link));
extern int sata_std_hardreset(struct ata_link *link, unsigned int *class,
			      unsigned long deadline);
extern void ata_std_postreset(struct ata_link *link, unsigned int *classes);

extern struct ata_host *ata_host_alloc(struct device *dev, int max_ports);
extern struct ata_host *ata_host_alloc_pinfo(struct device *dev,
			const struct ata_port_info * const * ppi, int n_ports);
extern void ata_host_get(struct ata_host *host);
extern void ata_host_put(struct ata_host *host);
extern int ata_host_start(struct ata_host *host);
extern int ata_host_register(struct ata_host *host,
			     struct scsi_host_template *sht);
extern int ata_host_activate(struct ata_host *host, int irq,
			     irq_handler_t irq_handler, unsigned long irq_flags,
			     struct scsi_host_template *sht);
extern void ata_host_detach(struct ata_host *host);
extern void ata_host_init(struct ata_host *, struct device *, struct ata_port_operations *);
extern int ata_scsi_detect(struct scsi_host_template *sht);
extern int ata_scsi_ioctl(struct scsi_device *dev, unsigned int cmd,
			  void __user *arg);
#ifdef CONFIG_COMPAT
#define ATA_SCSI_COMPAT_IOCTL .compat_ioctl = ata_scsi_ioctl,
#else
#define ATA_SCSI_COMPAT_IOCTL /* empty */
#endif
extern int ata_scsi_queuecmd(struct Scsi_Host *h, struct scsi_cmnd *cmd);
#if IS_REACHABLE(CONFIG_ATA)
bool ata_scsi_dma_need_drain(struct request *rq);
#else
#define ata_scsi_dma_need_drain NULL
#endif
extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev,
			    unsigned int cmd, void __user *arg);
extern bool ata_link_online(struct ata_link *link);
extern bool ata_link_offline(struct ata_link *link);
#ifdef CONFIG_PM
extern int ata_host_suspend(struct ata_host *host, pm_message_t mesg);
extern void ata_host_resume(struct ata_host *host);
extern void ata_sas_port_suspend(struct ata_port *ap);
extern void ata_sas_port_resume(struct ata_port *ap);
#else
static inline void ata_sas_port_suspend(struct ata_port *ap)
{
}
static inline void ata_sas_port_resume(struct ata_port *ap)
{
}
#endif
extern int ata_ratelimit(void);
extern void ata_msleep(struct ata_port *ap, unsigned int msecs);
extern u32 ata_wait_register(struct ata_port *ap, void __iomem *reg, u32 mask,
			u32 val, unsigned long interval, unsigned long timeout);
extern int atapi_cmd_type(u8 opcode);
extern unsigned long ata_pack_xfermask(unsigned long pio_mask,
			unsigned long mwdma_mask, unsigned long udma_mask);
extern void ata_unpack_xfermask(unsigned long xfer_mask,
			unsigned long *pio_mask, unsigned long *mwdma_mask,
			unsigned long *udma_mask);
extern u8 ata_xfer_mask2mode(unsigned long xfer_mask);
extern unsigned long ata_xfer_mode2mask(u8 xfer_mode);
extern int ata_xfer_mode2shift(unsigned long xfer_mode);
extern const char *ata_mode_string(unsigned long xfer_mask);
extern unsigned long ata_id_xfermask(const u16 *id);
extern int ata_std_qc_defer(struct ata_queued_cmd *qc);
extern enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc);
extern void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
		 unsigned int n_elem);
extern unsigned int ata_dev_classify(const struct ata_taskfile *tf);
extern void ata_dev_disable(struct ata_device *adev);
extern void ata_id_string(const u16 *id, unsigned char *s,
			  unsigned int ofs, unsigned int len);
extern void ata_id_c_string(const u16 *id, unsigned char *s,
			    unsigned int ofs, unsigned int len);
extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
					struct ata_taskfile *tf, u16 *id);
extern void ata_qc_complete(struct ata_queued_cmd *qc);
extern u64 ata_qc_get_active(struct ata_port *ap);
extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd);
extern int ata_std_bios_param(struct scsi_device *sdev,
			      struct block_device *bdev,
			      sector_t capacity, int geom[]);
extern void ata_scsi_unlock_native_capacity(struct scsi_device *sdev);
extern int ata_scsi_slave_config(struct scsi_device *sdev);
extern void ata_scsi_slave_destroy(struct scsi_device *sdev);
extern int ata_scsi_change_queue_depth(struct scsi_device *sdev,
				       int queue_depth);
extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
				    int queue_depth);
extern struct ata_device *ata_dev_pair(struct ata_device *adev);
extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev);
extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);
extern void ata_scsi_cmd_error_handler(struct Scsi_Host *host, struct ata_port *ap, struct list_head *eh_q);

/*
 * SATA specific code - drivers/ata/libata-sata.c
 */
#ifdef CONFIG_SATA_HOST
extern const unsigned long sata_deb_timing_normal[];
extern const unsigned long sata_deb_timing_hotplug[];
extern const unsigned long sata_deb_timing_long[];

static inline const unsigned long *
sata_ehc_deb_timing(struct ata_eh_context *ehc)
{
	if (ehc->i.flags & ATA_EHI_HOTPLUGGED)
		return sata_deb_timing_hotplug;
	else
		return sata_deb_timing_normal;
}

extern int sata_scr_valid(struct ata_link *link);
extern int sata_scr_read(struct ata_link *link, int reg, u32 *val);
extern int sata_scr_write(struct ata_link *link, int reg, u32 val);
extern int sata_scr_write_flush(struct ata_link *link, int reg, u32 val);
extern int sata_set_spd(struct ata_link *link);
extern int sata_link_hardreset(struct ata_link *link,
			const unsigned long *timing, unsigned long deadline,
			bool *online, int (*check_ready)(struct ata_link *));
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,
			    unsigned long deadline);
extern void ata_eh_analyze_ncq_error(struct ata_link *link);
#else
static inline const unsigned long *
sata_ehc_deb_timing(struct ata_eh_context *ehc)
{
	return NULL;
}
static inline int sata_scr_valid(struct ata_link *link) { return 0; }
static inline int sata_scr_read(struct ata_link *link, int reg, u32 *val)
{
	return -EOPNOTSUPP;
}
static inline int sata_scr_write(struct ata_link *link, int reg, u32 val)
{
	return -EOPNOTSUPP;
}
static inline int sata_scr_write_flush(struct ata_link *link, int reg, u32 val)
{
	return -EOPNOTSUPP;
}
static inline int sata_set_spd(struct ata_link *link) { return -EOPNOTSUPP; }
static inline int sata_link_hardreset(struct ata_link *link,
				      const unsigned long *timing,
				      unsigned long deadline,
				      bool *online,
				      int (*check_ready)(struct ata_link *))
{
	if (online)
		*online = false;
	return -EOPNOTSUPP;
}
static inline int sata_link_resume(struct ata_link *link,
				   const unsigned long *params,
				   unsigned long deadline)
{
	return -EOPNOTSUPP;
}
static inline void ata_eh_analyze_ncq_error(struct ata_link *link) { }
#endif
extern int sata_link_debounce(struct ata_link *link,
			const unsigned long *params, unsigned long deadline);
extern int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy,
			     bool spm_wakeup);
extern int ata_slave_link_init(struct ata_port *ap);
extern void ata_sas_port_destroy(struct ata_port *);
extern struct ata_port *ata_sas_port_alloc(struct ata_host *,
					   struct ata_port_info *, struct Scsi_Host *);
extern void ata_sas_async_probe(struct ata_port *ap);
extern int ata_sas_sync_probe(struct ata_port *ap);
extern int ata_sas_port_init(struct ata_port *);
extern int ata_sas_port_start(struct ata_port *ap);
extern int ata_sas_tport_add(struct device *parent, struct ata_port *ap);
extern void ata_sas_tport_delete(struct ata_port *ap);
extern void ata_sas_port_stop(struct ata_port *ap);
extern int ata_sas_slave_configure(struct scsi_device *, struct ata_port *);
extern int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap);
extern void ata_tf_to_fis(const struct ata_taskfile *tf,
			  u8 pmp, int is_cmd, u8 *fis);
extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
extern int ata_qc_complete_multiple(struct ata_port *ap, u64 qc_active);
extern bool sata_lpm_ignore_phy_events(struct ata_link *link);
extern int sata_async_notification(struct ata_port *ap);

extern int ata_cable_40wire(struct ata_port *ap);
extern int ata_cable_80wire(struct ata_port *ap);
extern int ata_cable_sata(struct ata_port *ap);
extern int ata_cable_ignore(struct ata_port *ap);
extern int ata_cable_unknown(struct ata_port *ap);

/* Timing helpers */
extern unsigned int ata_pio_need_iordy(const struct ata_device *);
extern u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle);

/* PCI */
#ifdef CONFIG_PCI
struct pci_dev;

struct pci_bits {
	unsigned int		reg;	/* PCI config register to read */
	unsigned int		width;	/* 1 (8 bit), 2 (16 bit), 4 (32 bit) */
	unsigned long		mask;
	unsigned long		val;
};

extern int pci_test_config_bits(struct pci_dev *pdev, const struct pci_bits *bits);
extern void ata_pci_shutdown_one(struct pci_dev *pdev);
extern void ata_pci_remove_one(struct pci_dev *pdev);

#ifdef CONFIG_PM
extern void ata_pci_device_do_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern int __must_check ata_pci_device_do_resume(struct pci_dev *pdev);
extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t mesg);
extern int ata_pci_device_resume(struct pci_dev *pdev);
#endif /* CONFIG_PM */
#endif /* CONFIG_PCI */

struct platform_device;

extern int ata_platform_remove_one(struct platform_device *pdev);

/*
 * ACPI - drivers/ata/libata-acpi.c
 */
#ifdef CONFIG_ATA_ACPI
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
{
	if (ap->pflags & ATA_PFLAG_INIT_GTM_VALID)
		return &ap->__acpi_init_gtm;
	return NULL;
}
int ata_acpi_stm(struct ata_port *ap, const struct ata_acpi_gtm *stm);
int ata_acpi_gtm(struct ata_port *ap, struct ata_acpi_gtm *stm);
unsigned long ata_acpi_gtm_xfermask(struct ata_device *dev,
				    const struct ata_acpi_gtm *gtm);
int ata_acpi_cbl_80wire(struct ata_port *ap, const struct ata_acpi_gtm *gtm);
#else
static inline const struct ata_acpi_gtm *ata_acpi_init_gtm(struct ata_port *ap)
{
	return NULL;
}

static inline int ata_acpi_stm(const struct ata_port *ap,
			       struct ata_acpi_gtm *stm)
{
	return -ENOSYS;
}

static inline int ata_acpi_gtm(const struct ata_port *ap,
			       struct ata_acpi_gtm *stm)
{
	return -ENOSYS;
}

static inline unsigned int ata_acpi_gtm_xfermask(struct ata_device *dev,
					const struct ata_acpi_gtm *gtm)
{
	return 0;
}

static inline int ata_acpi_cbl_80wire(struct ata_port *ap,
				      const struct ata_acpi_gtm *gtm)
{
	return 0;
}
#endif

/*
 * EH - drivers/ata/libata-eh.c
 */
extern void ata_port_schedule_eh(struct ata_port *ap);
extern void ata_port_wait_eh(struct ata_port *ap);
extern int ata_link_abort(struct ata_link *link);
extern int ata_port_abort(struct ata_port *ap);
extern int ata_port_freeze(struct ata_port *ap);

extern void ata_eh_freeze_port(struct ata_port *ap);
extern void ata_eh_thaw_port(struct ata_port *ap);

extern void ata_eh_qc_complete(struct ata_queued_cmd *qc);
extern void ata_eh_qc_retry(struct ata_queued_cmd *qc);

extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
		      ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
		      ata_postreset_fn_t postreset);
extern void ata_std_error_handler(struct ata_port *ap);
extern void ata_std_sched_eh(struct ata_port *ap);
extern void ata_std_end_eh(struct ata_port *ap);
extern int ata_link_nr_enabled(struct ata_link *link);

/*
 * Base operations to inherit from and initializers for sht
 *
 * Operations
 *
 * base  : Common to all libata drivers.
 * sata  : SATA controllers w/ native interface.
 * pmp   : SATA controllers w/ PMP support.
 * sff   : SFF ATA controllers w/o BMDMA support.
 * bmdma : SFF ATA controllers w/ BMDMA support.
 *
 * sht initializers
 *
 * BASE  : Common to all libata drivers.  The user must set
 *	   sg_tablesize and dma_boundary.
 * PIO   : SFF ATA controllers w/ only PIO support.
 * BMDMA : SFF ATA controllers w/ BMDMA support.  sg_tablesize and
 *	   dma_boundary are set to BMDMA limits.
 * NCQ   : SATA controllers supporting NCQ.  The user must set
 *	   sg_tablesize, dma_boundary and can_queue.
 */
extern const struct ata_port_operations ata_base_port_ops;
extern const struct ata_port_operations sata_port_ops;
extern struct device_attribute *ata_common_sdev_attrs[];

/*
 * All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
 * by the edge drivers.  Because the 'module' field of sht must be the
 * edge driver's module reference, otherwise the driver can be unloaded
 * even if the scsi_device is being accessed.
 */
#define __ATA_BASE_SHT(drv_name)				\
	.module			= THIS_MODULE,			\
	.name			= drv_name,			\
	.ioctl			= ata_scsi_ioctl,		\
	ATA_SCSI_COMPAT_IOCTL					\
	.queuecommand		= ata_scsi_queuecmd,		\
	.dma_need_drain		= ata_scsi_dma_need_drain,	\
	.this_id		= ATA_SHT_THIS_ID,		\
	.emulated		= ATA_SHT_EMULATED,		\
	.proc_name		= drv_name,			\
	.slave_destroy		= ata_scsi_slave_destroy,	\
	.bios_param		= ata_std_bios_param,		\
	.unlock_native_capacity	= ata_scsi_unlock_native_capacity

#define ATA_SUBBASE_SHT(drv_name)				\
	__ATA_BASE_SHT(drv_name),				\
	.can_queue		= ATA_DEF_QUEUE,		\
	.tag_alloc_policy	= BLK_TAG_ALLOC_RR,		\
	.slave_configure	= ata_scsi_slave_config

#define ATA_BASE_SHT(drv_name)					\
	ATA_SUBBASE_SHT(drv_name),				\
	.sdev_attrs		= ata_common_sdev_attrs

#ifdef CONFIG_SATA_HOST
extern struct device_attribute *ata_ncq_sdev_attrs[];

#define ATA_NCQ_SHT(drv_name)					\
	ATA_SUBBASE_SHT(drv_name),				\
	.sdev_attrs		= ata_ncq_sdev_attrs,		\
	.change_queue_depth	= ata_scsi_change_queue_depth
#endif

/*
 * PMP helpers
 */
#ifdef CONFIG_SATA_PMP
static inline bool sata_pmp_supported(struct ata_port *ap)
{
	return ap->flags & ATA_FLAG_PMP;
}

static inline bool sata_pmp_attached(struct ata_port *ap)
{
	return ap->nr_pmp_links != 0;
}

static inline bool ata_is_host_link(const struct ata_link *link)
{
	return link == &link->ap->link || link == link->ap->slave_link;
}
#else /* CONFIG_SATA_PMP */
static inline bool sata_pmp_supported(struct ata_port *ap)
{
	return false;
}

static inline bool sata_pmp_attached(struct ata_port *ap)
{
	return false;
}

static inline bool ata_is_host_link(const struct ata_link *link)
{
	return true;
}
#endif /* CONFIG_SATA_PMP */

static inline int sata_srst_pmp(struct ata_link *link)
{
	if (sata_pmp_supported(link->ap) && ata_is_host_link(link))
		return SATA_PMP_CTRL_PORT;
	return link->pmp;
}

#define ata_port_printk(level, ap, fmt, ...)			\
	pr_ ## level ("ata%u: " fmt, (ap)->print_id, ##__VA_ARGS__)

#define ata_port_err(ap, fmt, ...)				\
	ata_port_printk(err, ap, fmt, ##__VA_ARGS__)
#define ata_port_warn(ap, fmt, ...)				\
	ata_port_printk(warn, ap, fmt, ##__VA_ARGS__)
#define ata_port_notice(ap, fmt, ...)				\
	ata_port_printk(notice, ap, fmt, ##__VA_ARGS__)
#define ata_port_info(ap, fmt, ...)				\
	ata_port_printk(info, ap, fmt, ##__VA_ARGS__)
#define ata_port_dbg(ap, fmt, ...)				\
	ata_port_printk(debug, ap, fmt, ##__VA_ARGS__)

#define ata_link_printk(level, link, fmt, ...)			\
do {								\
	if (sata_pmp_attached((link)->ap) ||			\
	    (link)->ap->slave_link)				\
		pr_ ## level ("ata%u.%02u: " fmt,		\
			      (link)->ap->print_id,		\
			      (link)->pmp,			\
			      ##__VA_ARGS__);			\
        else							\
		pr_ ## level ("ata%u: " fmt,			\
			      (link)->ap->print_id,		\
			      ##__VA_ARGS__);			\
} while (0)

#define ata_link_err(link, fmt, ...)				\
	ata_link_printk(err, link, fmt, ##__VA_ARGS__)
#define ata_link_warn(link, fmt, ...)				\
	ata_link_printk(warn, link, fmt, ##__VA_ARGS__)
#define ata_link_notice(link, fmt, ...)				\
	ata_link_printk(notice, link, fmt, ##__VA_ARGS__)
#define ata_link_info(link, fmt, ...)				\
	ata_link_printk(info, link, fmt, ##__VA_ARGS__)
#define ata_link_dbg(link, fmt, ...)				\
	ata_link_printk(debug, link, fmt, ##__VA_ARGS__)

#define ata_dev_printk(level, dev, fmt, ...)			\
        pr_ ## level("ata%u.%02u: " fmt,			\
               (dev)->link->ap->print_id,			\
	       (dev)->link->pmp + (dev)->devno,			\
	       ##__VA_ARGS__)

#define ata_dev_err(dev, fmt, ...)				\
	ata_dev_printk(err, dev, fmt, ##__VA_ARGS__)
#define ata_dev_warn(dev, fmt, ...)				\
	ata_dev_printk(warn, dev, fmt, ##__VA_ARGS__)
#define ata_dev_notice(dev, fmt, ...)				\
	ata_dev_printk(notice, dev, fmt, ##__VA_ARGS__)
#define ata_dev_info(dev, fmt, ...)				\
	ata_dev_printk(info, dev, fmt, ##__VA_ARGS__)
#define ata_dev_dbg(dev, fmt, ...)				\
	ata_dev_printk(debug, dev, fmt, ##__VA_ARGS__)

void ata_print_version(const struct device *dev, const char *version);

/*
 * ata_eh_info helpers
 */
extern __printf(2, 3)
void __ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
extern __printf(2, 3)
void ata_ehi_push_desc(struct ata_eh_info *ehi, const char *fmt, ...);
extern void ata_ehi_clear_desc(struct ata_eh_info *ehi);

static inline void ata_ehi_hotplugged(struct ata_eh_info *ehi)
{
	ehi->probe_mask |= (1 << ATA_MAX_DEVICES) - 1;
	ehi->flags |= ATA_EHI_HOTPLUGGED;
	ehi->action |= ATA_EH_RESET | ATA_EH_ENABLE_LINK;
	ehi->err_mask |= AC_ERR_ATA_BUS;
}

/*
 * port description helpers
 */
extern __printf(2, 3)
void ata_port_desc(struct ata_port *ap, const char *fmt, ...);
#ifdef CONFIG_PCI
extern void ata_port_pbar_desc(struct ata_port *ap, int bar, ssize_t offset,
			       const char *name);
#endif

static inline bool ata_tag_internal(unsigned int tag)
{
	return tag == ATA_TAG_INTERNAL;
}

static inline bool ata_tag_valid(unsigned int tag)
{
	return tag < ATA_MAX_QUEUE || ata_tag_internal(tag);
}

#define __ata_qc_for_each(ap, qc, tag, max_tag, fn)		\
	for ((tag) = 0; (tag) < (max_tag) &&			\
	     ({ qc = fn((ap), (tag)); 1; }); (tag)++)		\

/*
 * Internal use only, iterate commands ignoring error handling and
 * status of 'qc'.
 */
#define ata_qc_for_each_raw(ap, qc, tag)					\
	__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, __ata_qc_from_tag)

/*
 * Iterate all potential commands that can be queued
 */
#define ata_qc_for_each(ap, qc, tag)					\
	__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE, ata_qc_from_tag)

/*
 * Like ata_qc_for_each, but with the internal tag included
 */
#define ata_qc_for_each_with_internal(ap, qc, tag)			\
	__ata_qc_for_each(ap, qc, tag, ATA_MAX_QUEUE + 1, ata_qc_from_tag)

/*
 * device helpers
 */
static inline unsigned int ata_class_enabled(unsigned int class)
{
	return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI ||
		class == ATA_DEV_PMP || class == ATA_DEV_SEMB ||
		class == ATA_DEV_ZAC;
}

static inline unsigned int ata_class_disabled(unsigned int class)
{
	return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP ||
		class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP ||
		class == ATA_DEV_ZAC_UNSUP;
}

static inline unsigned int ata_class_absent(unsigned int class)
{
	return !ata_class_enabled(class) && !ata_class_disabled(class);
}

static inline unsigned int ata_dev_enabled(const struct ata_device *dev)
{
	return ata_class_enabled(dev->class);
}

static inline unsigned int ata_dev_disabled(const struct ata_device *dev)
{
	return ata_class_disabled(dev->class);
}

static inline unsigned int ata_dev_absent(const struct ata_device *dev)
{
	return ata_class_absent(dev->class);
}

/*
 * link helpers
 */
static inline int ata_link_max_devices(const struct ata_link *link)
{
	if (ata_is_host_link(link) && link->ap->flags & ATA_FLAG_SLAVE_POSS)
		return 2;
	return 1;
}

static inline int ata_link_active(struct ata_link *link)
{
	return ata_tag_valid(link->active_tag) || link->sactive;
}

/*
 * Iterators
 *
 * ATA_LITER_* constants are used to select link iteration mode and
 * ATA_DITER_* device iteration mode.
 *
 * For a custom iteration directly using ata_{link|dev}_next(), if
 * @link or @dev, respectively, is NULL, the first element is
 * returned.  @dev and @link can be any valid device or link and the
 * next element according to the iteration mode will be returned.
 * After the last element, NULL is returned.
 */
enum ata_link_iter_mode {
	ATA_LITER_EDGE,		/* if present, PMP links only; otherwise,
				 * host link.  no slave link */
	ATA_LITER_HOST_FIRST,	/* host link followed by PMP or slave links */
	ATA_LITER_PMP_FIRST,	/* PMP links followed by host link,
				 * slave link still comes after host link */
};

enum ata_dev_iter_mode {
	ATA_DITER_ENABLED,
	ATA_DITER_ENABLED_REVERSE,
	ATA_DITER_ALL,
	ATA_DITER_ALL_REVERSE,
};

extern struct ata_link *ata_link_next(struct ata_link *link,
				      struct ata_port *ap,
				      enum ata_link_iter_mode mode);

extern struct ata_device *ata_dev_next(struct ata_device *dev,
				       struct ata_link *link,
				       enum ata_dev_iter_mode mode);

/*
 * Shortcut notation for iterations
 *
 * ata_for_each_link() iterates over each link of @ap according to
 * @mode.  @link points to the current link in the loop.  @link is
 * NULL after loop termination.  ata_for_each_dev() works the same way
 * except that it iterates over each device of @link.
 *
 * Note that the mode prefixes ATA_{L|D}ITER_ shouldn't need to be
 * specified when using the following shorthand notations.  Only the
 * mode itself (EDGE, HOST_FIRST, ENABLED, etc...) should be
 * specified.  This not only increases brevity but also makes it
 * impossible to use ATA_LITER_* for device iteration or vice-versa.
 */
#define ata_for_each_link(link, ap, mode) \
	for ((link) = ata_link_next(NULL, (ap), ATA_LITER_##mode); (link); \
	     (link) = ata_link_next((link), (ap), ATA_LITER_##mode))

#define ata_for_each_dev(dev, link, mode) \
	for ((dev) = ata_dev_next(NULL, (link), ATA_DITER_##mode); (dev); \
	     (dev) = ata_dev_next((dev), (link), ATA_DITER_##mode))

/**
 *	ata_ncq_enabled - Test whether NCQ is enabled
 *	@dev: ATA device to test for
 *
 *	LOCKING:
 *	spin_lock_irqsave(host lock)
 *
 *	RETURNS:
 *	1 if NCQ is enabled for @dev, 0 otherwise.
 */
static inline int ata_ncq_enabled(struct ata_device *dev)
{
	if (!IS_ENABLED(CONFIG_SATA_HOST))
		return 0;
	return (dev->flags & (ATA_DFLAG_PIO | ATA_DFLAG_NCQ_OFF |
			      ATA_DFLAG_NCQ)) == ATA_DFLAG_NCQ;
}

static inline bool ata_fpdma_dsm_supported(struct ata_device *dev)
{
	return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
		(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET] &
		 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM);
}

static inline bool ata_fpdma_read_log_supported(struct ata_device *dev)
{
	return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
		(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET] &
		 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED);
}

static inline bool ata_fpdma_zac_mgmt_in_supported(struct ata_device *dev)
{
	return (dev->flags & ATA_DFLAG_NCQ_SEND_RECV) &&
		(dev->ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET] &
		ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED);
}

static inline bool ata_fpdma_zac_mgmt_out_supported(struct ata_device *dev)
{
	return (dev->ncq_non_data_cmds[ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET] &
		ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT);
}

static inline void ata_qc_set_polling(struct ata_queued_cmd *qc)
{
	qc->tf.ctl |= ATA_NIEN;
}

static inline struct ata_queued_cmd *__ata_qc_from_tag(struct ata_port *ap,
						       unsigned int tag)
{
	if (ata_tag_valid(tag))
		return &ap->qcmd[tag];
	return NULL;
}

static inline struct ata_queued_cmd *ata_qc_from_tag(struct ata_port *ap,
						     unsigned int tag)
{
	struct ata_queued_cmd *qc = __ata_qc_from_tag(ap, tag);

if (unlikely(!qc) || !ap->ops->error_handler)
		return qc;

if ((qc->flags & (ATA_QCFLAG_ACTIVE |
			  ATA_QCFLAG_FAILED)) == ATA_QCFLAG_ACTIVE)
		return qc;

return NULL;
}

static inline unsigned int ata_qc_raw_nbytes(struct ata_queued_cmd *qc)
{
	return qc->nbytes - min(qc->extrabytes, qc->nbytes);
}

static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
{
	memset(tf, 0, sizeof(*tf));

#ifdef CONFIG_ATA_SFF
	tf->ctl = dev->link->ap->ctl;
#else
	tf->ctl = ATA_DEVCTL_OBS;
#endif
	if (dev->devno == 0)
		tf->device = ATA_DEVICE_OBS;
	else
		tf->device = ATA_DEVICE_OBS | ATA_DEV1;
}

static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
{
	qc->dma_dir = DMA_NONE;
	qc->sg = NULL;
	qc->flags = 0;
	qc->cursg = NULL;
	qc->cursg_ofs = 0;
	qc->nbytes = qc->extrabytes = qc->curbytes = 0;
	qc->n_elem = 0;
	qc->err_mask = 0;
	qc->sect_size = ATA_SECT_SIZE;

ata_tf_init(qc->dev, &qc->tf);

/* init result_tf such that it indicates normal completion */
	qc->result_tf.command = ATA_DRDY;
	qc->result_tf.feature = 0;
}

static inline int ata_try_flush_cache(const struct ata_device *dev)
{
	return ata_id_wcache_enabled(dev->id) ||
	       ata_id_has_flush(dev->id) ||
	       ata_id_has_flush_ext(dev->id);
}

static inline unsigned int ac_err_mask(u8 status)
{
	if (status & (ATA_BUSY | ATA_DRQ))
		return AC_ERR_HSM;
	if (status & (ATA_ERR | ATA_DF))
		return AC_ERR_DEV;
	return 0;
}

static inline unsigned int __ac_err_mask(u8 status)
{
	unsigned int mask = ac_err_mask(status);
	if (mask == 0)
		return AC_ERR_OTHER;
	return mask;
}

static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
{
	return *(struct ata_port **)&host->hostdata[0];
}

static inline int ata_check_ready(u8 status)
{
	if (!(status & ATA_BUSY))
		return 1;

/* 0xff indicates either no device or device not ready */
	if (status == 0xff)
		return -ENODEV;

return 0;
}

static inline unsigned long ata_deadline(unsigned long from_jiffies,
					 unsigned long timeout_msecs)
{
	return from_jiffies + msecs_to_jiffies(timeout_msecs);
}

/* Don't open code these in drivers as there are traps. Firstly the range may
   change in future hardware and specs, secondly 0xFF means 'no DMA' but is
   > UDMA_0. Dyma ddreigiau */

static inline int ata_using_mwdma(struct ata_device *adev)
{
	if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
		return 1;
	return 0;
}

static inline int ata_using_udma(struct ata_device *adev)
{
	if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
		return 1;
	return 0;
}

static inline int ata_dma_enabled(struct ata_device *adev)
{
	return (adev->dma_mode == 0xFF ? 0 : 1);
}

/**************************************************************************
 * PATA timings - drivers/ata/libata-pata-timings.c
 */
extern const struct ata_timing *ata_timing_find_mode(u8 xfer_mode);
extern int ata_timing_compute(struct ata_device *, unsigned short,
			      struct ata_timing *, int, int);
extern void ata_timing_merge(const struct ata_timing *,
			     const struct ata_timing *, struct ata_timing *,
			     unsigned int);

/**************************************************************************
 * PMP - drivers/ata/libata-pmp.c
 */
#ifdef CONFIG_SATA_PMP

extern const struct ata_port_operations sata_pmp_port_ops;

extern int sata_pmp_qc_defer_cmd_switch(struct ata_queued_cmd *qc);
extern void sata_pmp_error_handler(struct ata_port *ap);

#else /* CONFIG_SATA_PMP */

#define sata_pmp_port_ops		sata_port_ops
#define sata_pmp_qc_defer_cmd_switch	ata_std_qc_defer
#define sata_pmp_error_handler		ata_std_error_handler

#endif /* CONFIG_SATA_PMP */

/**************************************************************************
 * SFF - drivers/ata/libata-sff.c
 */
#ifdef CONFIG_ATA_SFF

extern const struct ata_port_operations ata_sff_port_ops;
extern const struct ata_port_operations ata_bmdma32_port_ops;

/* PIO only, sg_tablesize and dma_boundary limits can be removed */
#define ATA_PIO_SHT(drv_name)					\
	ATA_BASE_SHT(drv_name),					\
	.sg_tablesize		= LIBATA_MAX_PRD,		\
	.dma_boundary		= ATA_DMA_BOUNDARY

extern void ata_sff_dev_select(struct ata_port *ap, unsigned int device);
extern u8 ata_sff_check_status(struct ata_port *ap);
extern void ata_sff_pause(struct ata_port *ap);
extern void ata_sff_dma_pause(struct ata_port *ap);
extern int ata_sff_busy_sleep(struct ata_port *ap,
			      unsigned long timeout_pat, unsigned long timeout);
extern int ata_sff_wait_ready(struct ata_link *link, unsigned long deadline);
extern void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
extern void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
extern void ata_sff_exec_command(struct ata_port *ap,
				 const struct ata_taskfile *tf);
extern unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc,
			unsigned char *buf, unsigned int buflen, int rw);
extern unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc,
			unsigned char *buf, unsigned int buflen, int rw);
extern void ata_sff_irq_on(struct ata_port *ap);
extern void ata_sff_irq_clear(struct ata_port *ap);
extern int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,
			    u8 status, int in_wq);
extern void ata_sff_queue_work(struct work_struct *work);
extern void ata_sff_queue_delayed_work(struct delayed_work *dwork,
		unsigned long delay);
extern void ata_sff_queue_pio_task(struct ata_link *link, unsigned long delay);
extern unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc);
extern bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc);
extern unsigned int ata_sff_port_intr(struct ata_port *ap,
				      struct ata_queued_cmd *qc);
extern irqreturn_t ata_sff_interrupt(int irq, void *dev_instance);
extern void ata_sff_lost_interrupt(struct ata_port *ap);
extern void ata_sff_freeze(struct ata_port *ap);
extern void ata_sff_thaw(struct ata_port *ap);
extern int ata_sff_prereset(struct ata_link *link, unsigned long deadline);
extern unsigned int ata_sff_dev_classify(struct ata_device *dev, int present,
					  u8 *r_err);
extern int ata_sff_wait_after_reset(struct ata_link *link, unsigned int devmask,
				    unsigned long deadline);
extern int ata_sff_softreset(struct ata_link *link, unsigned int *classes,
			     unsigned long deadline);
extern int sata_sff_hardreset(struct ata_link *link, unsigned int *class,
			       unsigned long deadline);
extern void ata_sff_postreset(struct ata_link *link, unsigned int *classes);
extern void ata_sff_drain_fifo(struct ata_queued_cmd *qc);
extern void ata_sff_error_handler(struct ata_port *ap);
extern void ata_sff_std_ports(struct ata_ioports *ioaddr);
#ifdef CONFIG_PCI
extern int ata_pci_sff_init_host(struct ata_host *host);
extern int ata_pci_sff_prepare_host(struct pci_dev *pdev,
				    const struct ata_port_info * const * ppi,
				    struct ata_host **r_host);
extern int ata_pci_sff_activate_host(struct ata_host *host,
				     irq_handler_t irq_handler,
				     struct scsi_host_template *sht);
extern int ata_pci_sff_init_one(struct pci_dev *pdev,
		const struct ata_port_info * const * ppi,
		struct scsi_host_template *sht, void *host_priv, int hflags);
#endif /* CONFIG_PCI */

#ifdef CONFIG_ATA_BMDMA

extern const struct ata_port_operations ata_bmdma_port_ops;

#define ATA_BMDMA_SHT(drv_name)					\
	ATA_BASE_SHT(drv_name),					\
	.sg_tablesize		= LIBATA_MAX_PRD,		\
	.dma_boundary		= ATA_DMA_BOUNDARY

extern enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc);
extern unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc);
extern enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc);
extern unsigned int ata_bmdma_port_intr(struct ata_port *ap,
				      struct ata_queued_cmd *qc);
extern irqreturn_t ata_bmdma_interrupt(int irq, void *dev_instance);
extern void ata_bmdma_error_handler(struct ata_port *ap);
extern void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc);
extern void ata_bmdma_irq_clear(struct ata_port *ap);
extern void ata_bmdma_setup(struct ata_queued_cmd *qc);
extern void ata_bmdma_start(struct ata_queued_cmd *qc);
extern void ata_bmdma_stop(struct ata_queued_cmd *qc);
extern u8 ata_bmdma_status(struct ata_port *ap);
extern int ata_bmdma_port_start(struct ata_port *ap);
extern int ata_bmdma_port_start32(struct ata_port *ap);

#ifdef CONFIG_PCI
extern int ata_pci_bmdma_clear_simplex(struct pci_dev *pdev);
extern void ata_pci_bmdma_init(struct ata_host *host);
extern int ata_pci_bmdma_prepare_host(struct pci_dev *pdev,
				      const struct ata_port_info * const * ppi,
				      struct ata_host **r_host);
extern int ata_pci_bmdma_init_one(struct pci_dev *pdev,
				  const struct ata_port_info * const * ppi,
				  struct scsi_host_template *sht,
				  void *host_priv, int hflags);
#endif /* CONFIG_PCI */
#endif /* CONFIG_ATA_BMDMA */

/**
 *	ata_sff_busy_wait - Wait for a port status register
 *	@ap: Port to wait for.
 *	@bits: bits that must be clear
 *	@max: number of 10uS waits to perform
 *
 *	Waits up to max*10 microseconds for the selected bits in the port's
 *	status register to be cleared.
 *	Returns final value of status register.
 *
 *	LOCKING:
 *	Inherited from caller.
 */
static inline u8 ata_sff_busy_wait(struct ata_port *ap, unsigned int bits,
				   unsigned int max)
{
	u8 status;

do {
		udelay(10);
		status = ap->ops->sff_check_status(ap);
		max--;
	} while (status != 0xff && (status & bits) && (max > 0));

return status;
}

/**
 *	ata_wait_idle - Wait for a port to be idle.
 *	@ap: Port to wait for.
 *
 *	Waits up to 10ms for port's BUSY and DRQ signals to clear.
 *	Returns final value of status register.
 *
 *	LOCKING:
 *	Inherited from caller.
 */
static inline u8 ata_wait_idle(struct ata_port *ap)
{
	u8 status = ata_sff_busy_wait(ap, ATA_BUSY | ATA_DRQ, 1000);

if (status != 0xff && (status & (ATA_BUSY | ATA_DRQ)))
		ata_port_dbg(ap, "abnormal Status 0x%X\n", status);

return status;
}
#endif /* CONFIG_ATA_SFF */

#endif /* __LINUX_LIBATA_H__ */

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