s/boradcast/broadcast/ in comment.

playstation2: Somewhat belated device_t/softc split.

Use ETHER_LOCK()/ETHER_UNLOCK() for all ethernet drivers to protect ec_multi*.

Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy

Add missing semicolon.

branches: 1.11.16; 1.11.18;
Adopt to device_t/struct ifnet* changes

branches: 1.10.4; 1.10.6;
Add missing includes, use new style function declarations.

branches: 1.9.2;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.8.10; 1.8.16;
Remove support for NetBSD/playstation2.

branches: 1.7.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.6.6; 1.6.8; 1.6.10;
Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange(). Check for
a non-ENXIO error return from mii_mediachg(). (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines. There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run. I have compiled macppc, sparc64, i386. I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.

__FUNCTION__ -> __func__

branches: 1.4.50; 1.4.56; 1.4.60; 1.4.64;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

merge ktrace-lwp.

branches: 1.2.16;
__KERNEL_RCSID()

branches: 1.1.4; 1.1.6; 1.1.22;
playstation2 port

branches: 1.3.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.2.10; 1.2.16;
Remove support for NetBSD/playstation2.

branches: 1.1.4; 1.1.6; 1.1.128; 1.1.142;
playstation2 port

playstation2: Somewhat belated device_t/softc split.

Change MII PHY read/write API from:

int (*mii_readreg_t)(device_t, int, int);
void (*mii_writereg_t)(device_t, int, int, int);
to:

int (*mii_readreg_t)(device_t, int, int, uint16_t *);
int (*mii_writereg_t)(device_t, int, int, uint16_t);

Now we can test if a read/write operation failed or not by the return value.

In 802.3 spec says that the PHY shall not respond to read/write transaction
to the unimplemented register(22.2.4.3). Detecting timeout can be used to
check whether a register is implemented or not (if the register conforms to
the spec). ukphy(4) can be used this for MII_MMDACR and MII_MMDAADR.

Note that I noticed that the following code do infinite loop in the
read/wirte function. If it accesses unimplemented PHY register, it will hang.
It should be fixed:

arm/at91/at91emac.c
arm/ep93xx/epe.c
arm/omap/omapl1x_emac.c
mips/ralink/ralink_eth.c
arch/powerpc/booke/dev/pq3etsec.c(read)
dev/cadence/if_cemac.c <- hkenken
dev/ic/lan9118.c


Tested with the following device:

axe+ukphy
axe+rgephy
axen+rgephy (tested by Andrius V)
wm+atphy
wm+ukphy
wm+igphy
wm+ihphy
wm+makphy
sk+makphy
sk+brgphy
sk+gentbi
msk+makphy
sip+icsphy
sip+ukphy
re+rgephy
bge+brgphy
bnx+brgphy
gsip+gphyter
rtk+rlphy
fxp+inphy (tested by Andrius V)
tlp+acphy
ex+exphy
epic+qsphy
vge+ciphy (tested by Andrius V)
vr+ukphy (tested by Andrius V)
vte+ukphy (tested by Andrius V)

Not tested (MAC):
arm:at91emac
arm:cemac
arm:epe
arm:geminigmac
arm:enet
arm:cpsw
arm:emac(omac)
arm:emac(sunxi)
arm:npe
evbppc:temac
macppc:bm
macppc:gm
mips:aumac
mips:ae
mips:cnmac
mips:reth
mips:sbmac
playstation2:smap
powerpc:tsec
powerpc:emac(ibm4xx)
sgimips:mec
sparc:be
sf
ne(ax88190, dl10019)
awge
ep
gem
hme
smsh
mtd
sm
age
alc
ale
bce
cas
et
jme
lii
nfe
pcn
ste
stge
tl
xi
aue
mue
smsc
udav
url

Not tested (PHY):
amhphy
bmtphy
dmphy
etphy
glxtphy
ikphy
iophy
lxtphy
nsphyter
pnaphy
rdcphy
sqphy
tlphy
tqphy
urlphy

branches: 1.6.16; 1.6.18;
Use device_t/struct ifnet* for phy callbacks

branches: 1.5.6; 1.5.8;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.4.10; 1.4.16;
Remove support for NetBSD/playstation2.

branches: 1.3.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.6; 1.2.8; 1.2.10;
Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange(). Check for
a non-ENXIO error return from mii_mediachg(). (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines. There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run. I have compiled macppc, sparc64, i386. I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.

branches: 1.1.4; 1.1.6; 1.1.38; 1.1.100; 1.1.106; 1.1.114;
playstation2 port

Use DPRINTF instead of __gsfb_print() to print smap status.

__gsfb_printf() is defined only with the GSFB_DEBUG_MONITOR option.

Eliminate use of IFF_OACTIVE.

playstation2: Somewhat belated device_t/softc split.

malloc(9) -> kmem(9)

XXX Audit use of KM_NOSLEEP here.

branches: 1.32.6;
Adopt <net/if_stats.h>.

branches: 1.31.2;
in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

KNF. No functional change.

Whitespace fix. No functional change.

Remove very old IFF_NOTRAILERS flag.

branches: 1.27.2;
Implement the BPF direction filter (BIOC[GS]DIRECTION). It provides backward
compatibility with BIOC[GS]SEESENT ioctl. The userland interface is the same
as FreeBSD.

This change also fixes a bug that the direction is misunderstand on some
environment by passing the direction to bpf_mtap*() instead of checking
m->m_pkthdr.rcvif.

Simplify like other drivers. NULL check of ifp->if_bpf is done in
bpf_mtap(), so it's not required to do it here.

It's not required to include net/bpfdesc.h. Remove it.

branches: 1.24.2;
Typos.

branches: 1.23.8;
Move bpf_mtap and if_ipackets++ on Rx of each driver to percpuq if_input

The benefits of the change are:
- We can reduce codes
- We can provide the same behavior between drivers
- Where/When if_ipackets is counted up
- Note that some drivers still update packet statistics in their own
way (periodical update)
- Moved bpf_mtap run in softint
- This makes it easy to MP-ify bpf

Proposed on tech-kern and tech-net

Apply deferred if_start framework

if_schedule_deferred_start checks if the if_snd queue contains packets,
so drivers don't need to check it by themselves.

branches: 1.21.2;
Introduce m_set_rcvif and m_reset_rcvif

The API is used to set (or reset) a received interface of a mbuf.
They are counterpart of m_get_rcvif, which will come in another
commit, hide internal of rcvif operation, and reduce the diff of
the upcoming change.

No functional change.

Fix bpf_mtap argument

Introduce softint-based if_input

This change intends to run the whole network stack in softint context
(or normal LWP), not hardware interrupt context. Note that the work is
still incomplete by this change; to that end, we also have to softint-ify
if_link_state_change (and bpf) which can still run in hardware interrupt.

This change softint-ifies at ifp->if_input that is called from
each device driver (and ieee80211_input) to ensure Layer 2 runs
in softint (e.g., ether_input and bridge_input). To this end,
we provide a framework (called percpuq) that utlizes softint(9)
and percpu ifqueues. With this patch, rxintr of most drivers just
queues received packets and schedules a softint, and the softint
dequeues packets and does rest packet processing.

To minimize changes to each driver, percpuq is allocated in struct
ifnet for now and that is initialized by default (in if_attach).
We probably have to move percpuq to softc of each driver, but it's
future work. At this point, only wm(4) has percpuq in its softc
as a reference implementation.

Additional information including performance numbers can be found
in the thread at tech-kern@ and tech-net@:
http://mail-index.netbsd.org/tech-kern/2016/01/14/msg019997.html

Acknowledgment: riastradh@ greatly helped this work.
Thank you very much!

MD rnd.h cleanups. Please let me know if I broke anything!

branches: 1.17.4; 1.17.6;
Merge tls-earlyentropy branch into HEAD.

NBPFILTER is no more.

branches: 1.15.2;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.14.10; 1.14.16;
Remove support for NetBSD/playstation2.

branches: 1.13.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.12.2; 1.12.4;
In smap_stop(), clear IFF_RUNNING before disabling the device.

branches: 1.11.2; 1.11.6;
Make many ethernet drivers share the common code for MII media
handling, ether_mediastatus() and ether_mediachange(). Check for
a non-ENXIO error return from mii_mediachg(). (ENXIO indicates
that a PHY is suspended.)

This patch shrinks the source code size by 979 lines. There was
a 5100-byte savings on the NetBSD/i386 kernel configuration, ALL.

I have made a few miscellaneous changes, too:

gem(4): use LIST_EMPTY(), LIST_FOREACH().
mtd(4): handle media ioctls, for a change!
axe(4): do not track link status in sc->axe_link any longer
nfe(4), aue(4), axe(4), udav(4), url(4): do not reset all PHYs
on a change of media

Except for the change to mtd(4), no functional changes are intended.

XXX This patch affects more architectures than I can feasibly
XXX compile and run. I have compiled macppc, sparc64, i386. I
XXX have run the patches on i386 boxen with bnx(4) and sip(4).
XXX Compiling and running on evbmips (MERAKI, ADM5120) is in
XXX progress.

__FUNCTION__ -> __func__

branches: 1.9.20; 1.9.26; 1.9.28; 1.9.32;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.8.26;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

merge ktrace-lwp.

branches: 1.6.12;
When adding/deleting multicast addresses, only whack the address
filter if the interface is marked RUNNING.

Fixes kern/27678.

__KERNEL_RCSID()

branches: 1.4.2;
transmission, not transmition.

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.1.4; 1.1.6;
playstation2 port

branches: 1.4.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.3.10; 1.3.16;
Remove support for NetBSD/playstation2.

branches: 1.2.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.4; 1.1.6; 1.1.124; 1.1.126; 1.1.128;
playstation2 port

Merge thorpej-cfargs2.

branches: 1.15.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.14.2;
malloc(9) -> kmem(9)

XXX Audit use of KM_NOSLEEP here.

branches: 1.13.28;
Include mips/cpuregs.h for MIPS_PHYS_TO_KSEG1

branches: 1.12.2;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix

branches: 1.11.4; 1.11.6; 1.11.8; 1.11.12;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.10.10; 1.10.16;
Remove support for NetBSD/playstation2.

branches: 1.9.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.8.2;
try to update for OHCI device/softc split, untested
(I've asked for testing on Apr 3, w/o success.)

branches: 1.7.40; 1.7.42;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

branches: 1.6.26;
merge ktrace-lwp.

branches: 1.5.10;
Make this compile again after the introduction of usb_dma_reserve;
need to include <dev/usb/usb_mem.h> now to pick up it's definition.

__KERNEL_RCSID()

branches: 1.3.6;
Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.1.4; 1.1.6;
playstation2 port

playstation2: Fix some pre-device_t/softc-split device private sizes.

Nothing appears to use device_private here, so let's not allocate
anything or ask for sizeof(struct device).

Merge thorpej-cfargs2.

branches: 1.18.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.17.30;
CFATTACH_DECL -> CFATTACH_DECL_NEW
struct device * -> device_t

We need to include param.h before device.h, as it uses uint64_t

Don't use old-style definitions.
Appeases GCC.

Include sys/device.h for cfdata_t

Adapt to change: struct cfdata * -> cfdata_t

branches: 1.12.6; 1.12.8; 1.12.12;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.11.10; 1.11.16;
Remove support for NetBSD/playstation2.

branches: 1.10.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.9.74; 1.9.76; 1.9.78;
merge ktrace-lwp.

s/locdesc_t/int/g

branches: 1.7.2;
adaptions to config_search() change, and minor autoconf fixes, mostly from Havard Eidnes

__KERNEL_RCSID()

branches: 1.5.6;
Use CFATTACH_DECL().

Declare all cfattach structures const.

remove trailing \n in panic(). approved perry.

Introduce a new routine, config_match(), which invokes the
cfattach->ca_match function in behalf of the caller. Use it
rather than invoking cfattach->ca_match directly.

branches: 1.1.4; 1.1.6;
playstation2 port

branches: 1.4.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.3.10; 1.3.16;
Remove support for NetBSD/playstation2.

branches: 1.2.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.4; 1.1.6; 1.1.124; 1.1.126; 1.1.128;
playstation2 port

branches: 1.4.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.3.10; 1.3.16;
Remove support for NetBSD/playstation2.

branches: 1.2.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.4; 1.1.6; 1.1.124; 1.1.126; 1.1.128;
playstation2 port

playstation2: Fix some pre-device_t/softc-split device private sizes.

Nothing appears to use device_private here, so let's not allocate
anything or ask for sizeof(struct device).

Merge thorpej-cfargs2.

branches: 1.14.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.13.30;
CFATTACH_DECL -> CFATTACH_DECL_NEW
struct device * -> device_t

We need to include param.h before device.h, as it uses uint64_t

Include sys/device.h for cfdata_t

Adapt to change: struct cfdata * -> cfdata_t

branches: 1.9.6; 1.9.8; 1.9.12;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.8.10; 1.8.16;
Remove support for NetBSD/playstation2.

branches: 1.7.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.6.74; 1.6.76; 1.6.78;
merge ktrace-lwp.

__KERNEL_RCSID()

branches: 1.4.2;
Use aprint_normal() for cfprint routines.

Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.1.4; 1.1.6;
playstation2 port

branches: 1.4.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.3.10; 1.3.16;
Remove support for NetBSD/playstation2.

branches: 1.2.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.1.4; 1.1.6; 1.1.124; 1.1.126; 1.1.128;
playstation2 port

branches: 1.5.6;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.4.10; 1.4.16;
Remove support for NetBSD/playstation2.

branches: 1.3.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.74; 1.2.76; 1.2.78;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

branches: 1.1.4; 1.1.6; 1.1.38;
playstation2 port

Remove unnecessary <sys/malloc.h>.

move ata_queue_alloc(1) and ata_queue_free() calls to ata_channel_init()
and ata_channel_destroy() respectively, to make attachment code simpler,
and to make it easier to spot special queue manipulation like cmdide(4)

on topic of PR kern/52606

Merge support for SATA NCQ (Native Command Queueing) from jdolecek-ncq branch

ATA subsystem was changed to support several outstanding commands, and use
NCQ xfers if supported by both the controller and the disk, including NCQ
error recovery. Set NCQ high priority for BPRIO_TIMECRITICAL xfers
if supported. Added FUA support.

Done some work towards MP-safe, all ATA code tsleep()/wakeup() replaced
by condvars, and switched most code from spl* to mutexes (separate
wd(4) and ata channel lock).

Introduced new option WD_CHAOS_MONKEY to facilitate testing of error
handling, fixed several uncovered issues. Also fixed several problems
with kernel dump to wd(4) disk.

Tested with ahcisata(4), mvsata(4), siisata(4), piixide(4) on amd64,
with and without port multiplier, both disk and ATAPI devices; other
drivers and archs mechanically adjusted and compile-tested. NCQ is
supported for ahcisata(4) and siisata(4) for any controller, for
mvsata(4) only Gen IIe ones for now. Also enabled ATAPI support in
mvsata(4).

Thanks to Matt Thomas for initial ATA infrastructure patch, and
Jonathan A.Kollasch for siisata(4) NCQ changes and general testing.

Also fixes PR kern/43169 (wd(4)); and PR kern/11811, PR kern/47041,
PR kern/51979 (kernel dump)

branches: 1.27.6; 1.27.20;
Bring back the playstation2 port - now that a toolchain for it is
available again.

branches: 1.26.10; 1.26.16;
Remove support for NetBSD/playstation2.

Ansify function definitions w/o arguments. Generated with sed.

branches: 1.24.8; 1.24.14;
Remove clause 3 and 4 from TNF licenses

branches: 1.23.2; 1.23.4;
Split device_t and softc for ATA devices, as well as wd(4). Other
cosmetic changes where appropriate.

branches: 1.22.48; 1.22.68; 1.22.72;
properly use ata_channel->ch_ndrive:
- initialize it properly in the bus front-ends (all 2, exept in wdc_pcmcia.c
for the "Sandisk CompactFlash Card" where it's set to 1)
- remplace hardcoded '2' by ata_channel->ch_ndrive in MI IDE drivers.

From Christos Zoulas in kern/32501.

branches: 1.21.2;
__asm__ -> __asm
__const__ -> const
__inline__ -> inline
__volatile__ -> volatile

merge ktrace-lwp.

branches: 1.19.2;
Rename macro-local variables so that __read_1() and __write_1() does
not use the same variable name. Fixes -Wshadow warning.

It's atac_pio_cap, not atac_PIO_cap. I wonder how I could get this
to compile earlier...

Make this compile again by removing a now-unused local variable
and picking up cmd_iot from the new register struct instead of the
channel struct.

Move most of wdc_softc into a new atac_softc structure that contains
info common to all types of ATA controllers.

- Split the register handles out of struct wdc_channel into a separate
wdc_regs structure, and array of which (indexed per channel) is pointed
to by struct wdc_softc.
- Move the resulting wdc_channel structure to atavar.h and rename it to
ata_channel. Rename the corresponding flags.
- Add a "ch_ndrive" member to struct ata_channel, which indicates the
maximum number of drives that can be present on the channel. For now,
this is always 2. Add an ATA_MAXDRIVES constant that places an upper
limit on this value, also currently 2.

Add the notion of "shadow registers" to the wdc driver. These shadow
registers are registers that overlap with others on many controllers, but
which may actually be distinct on some controllers. Right now, the two
shadows are:

- wd_status (usually overlaps wd_command)
- wd_features (usually overlaps wd_error)

Add a new helper function, wdc_init_shadow_regs(), used to initialize
the shadow register handles on controllers where they do actually overlap.

Partially from Jordan Rhody @ Wasabi Systems, Inc.

Make these compile again after the latest adjustments.

More wdc_channel structure member namespace cleanup:
- channel -> ch_channel
- wdc -> ch_wdc

Rename "struct channel_softc" to "struct wdc_channel".

Rename:
- wdc_xfer to ata_xfer
- channel_queue to ata_queue
and move them to <dev/ata/atavar.h> so they can be used by non-wdc ATA
controllers. Clean up the member names of these structures while at it.

Simplify allocation of the channel queue.

Update for new world of indirect wdc registers.

Add adabus.

Hide the use of config_interrupts() in one place.

1) Use config_interrupts() to attach IDE and ATAPI drives. This eliminates
most polling.
2) Clean up some goofiness in pciide -- get rid of the whole "candisable" path
(it's gratuitous) and simplify the code by calling pciide_map_compat_intr(),
*_set_modes() and wdc_print_modes() from central locations.
3) Add a register writability and register ghost test to eliminate phantom
drives more quickly.

__KERNEL_RCSID()

branches: 1.3.6;
Use CFATTACH_DECL().

Declare all cfattach structures const.

branches: 1.1.4; 1.1.6;
playstation2 port