Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r227293 (by ed):
Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.

This means that their use is restricted to a single C file.

MFC: r227309 (partial)

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.

The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.

MFC 241027:
- Re-shuffle the <machine/pc/bios.h> headers to move all kernel-specific
bits under #ifdef _KERNEL but leave definitions for various structures
defined by standards ($PIR table, SMAP entries, etc.) available to
userland.
- Consolidate duplicate SMBIOS table structure definitions in ipmi(4)
and smbios(4) in <machine/pc/bios.h> and make them available to
userland.

MFC 239128:
Don't try to stop the IPMI watchdog timer if it is not running.
Starting or stopping the IPMI watchdog is rather expensive with the
current implementation as all IPMI requests are bounced via thread.
This is not viable during shutdown or dumps, and this avoids headache
in the common case that the watchdog is not enabled. The IPMI watchdog
should probably be reworked to not use a separate thread to fix this
in the case when the watchdog timer is enabled.

Toss bogus mergeinfo.

MFC r235634

Fix and update battery status bits according to linux driver

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Second-to-last commit implementing Capsicum capabilities in the FreeBSD
kernel for FreeBSD 9.0:

Add a new capability mask argument to fget(9) and friends, allowing system
call code to declare what capabilities are required when an integer file
descriptor is converted into an in-kernel struct file *. With options
CAPABILITIES compiled into the kernel, this enforces capability
protection; without, this change is effectively a no-op.

Some cases require special handling, such as mmap(2), which must preserve
information about the maximum rights at the time of mapping in the memory
map so that they can later be enforced in mprotect(2) -- this is done by
narrowing the rights in the existing max_protection field used for similar
purposes with file permissions.

In namei(9), we assert that the code is not reached from within capability
mode, as we're not yet ready to enforce namespace capabilities there.
This will follow in a later commit.

Update two capability names: CAP_EVENT and CAP_KEVENT become
CAP_POST_KEVENT and CAP_POLL_KEVENT to more accurately indicate what they
represent.

Approved by: re (bz)
Submitted by: jonathan
Sponsored by: Google Inc

Fixed firmware revision decoding:
- the major is 7-bit binary encoded
- the minor is BCD encoded

PR: kern/151586
MFC after: 3 days

Fix test for double-nul characters that terminate the string table at
the end of each SMBIOS/DMI structure.

Submitted by: Dmitrij Tejblum @ yandex.ru
MFC after: 3 days

Rework the SMBIOS table walker to make it operate like other table walkers
and remove a buffer overflow:
- Remove the array of per-type dispatch functions. Instead, pass each
structure to a single callback. The callback should check the type of
each table entry to take appropriate action. This matches the behavior
of other table walkers such as for the MP Table and MADT.
- Don't attempt to save an array of string pointers for each structure
entry. Instead, just skip the strings. If this code is reused to
provide a generic SMBIOS table walker in the future we could provide
a method that looks up a specific string N for a given structure record
instead of pre-populating an array of pointers. This fixes a buffer
overflow for structure entries with more than 20 strings.

PR: kern/148546
Reported by: Spencer Minear @ McAfee
MFC after: 3 days

- Fixed incorrect watchdog timeout setting: MSB of a 2-byte
value is obtained by dividing it by 256, not by 2550; also,
one second is 10^9 nanoseconds, not 1800000000 nanoseconds.

- Due to rounding error, setting watchdog to a really small
timeout (<1 sec) was turning the watchdog off. It should
set the watchdog to a small timeout instead.

- Implemented error checking in ipmi_wd_event(), as required
by watchdog(9).

PR: kern/130512
Submitted by: Dmitrij Tejblum

- Additionally, check that the timeout value is within the
supported range, and if it's too large, act as required by
watchdog(9).

MFC after: 3 days

Import ACPICA 20090521.

Add stuff to support upcoming BMC/IPMI flashing of newer Dell machine
via the Linux tool.
- Add Linux shim to ipmi(4)
- Create a partitions file to linprocfs to make Linux fdisk see
disks. This file is dynamic so we can see disks come and go.
- Convert msdosfs to vfat in mtab since Linux uses that for
msdosfs.
- In the Linux mount path convert vfat passed in to msdosfs
so Linux mount works on FreeBSD. Note that tasting works
so that if da0 is a msdos file system
/compat/linux/bin/mount /dev/da0 /mnt
works.
- fix a 64it bug for l_off_t.
Grabing sh, mount, fdisk, df from Linux, creating a symlink of mtab to
/compat/linux/etc/mtab and then some careful unpacking of the Linux bmc
update tool and hacking makes it work on newer Dell boxes. Note, probably
if you can't figure out how to do this, then you probably shouldn't be
doing it :-)

Don't right-adjust the SMBus slave address for SSIF IPMI BMCs enumerated
via ACPI either. This is somewhat academic since we don't currently
support such devices though.

- Change ichsmb(4) to follow the format of all the other smbus controllers
for slave addressing by using left-adjusted slave addresses (i.e.
xxxxxxx0b).
- Require the low bit of the slave address to always be zero in smb(4) to
help catch broken applications.
- Adjust some code in the IPMI driver to not convert the slave address for
SSIF to a right-adjusted address. I (or possibly ambrisko@) added this in
the past to (unknowingly) work around the bug in ichsmb(4).

Submitted by: Andriy Gapon <avg of icyb.net.ua> (1,2)
MFC after: 1 month

Fix typo where the code was missing the "IPMICTL_RECEIVE_MSG_32" condition
test.

Remove hack attempt at using devfs cloning for per-file descriptor storage.
Use the much simpler cdevpriv for per-fd state and enable it. This allows
multiple opens of /dev/ipmi0 (e.g. using ipmitool while ipmievd is running
in the background).

MFC after: 1 week

- Tweak an error message.
- Fix a buglet where && was used instead of & to test if OBF was set in
a couple of places.

MFC after: 1 week

Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0 so that we can eventually MFC the
new kthread_xxx() calls.

Add support to the ipmi, isa attachment to attempt to read ipmi
config info. from device.hints. Some machines have ipmi controllers
that do not have attachment info in either PCI, SMBIOS or ACPI.
This idea was hacked together by me and then done properly by
jhb.

Submitted by: jhb
Reviewed by: jhb (man page)
Approved by: re (Ken Smith)
MFC after: 1 week

Update __FreeBSD_version check for MFC of pmap_mapbios().

Add constants for the fields in a BAR. Also, add two new macros
PCI_BAR_(IO|MEM)() that return true if the passed in value from a BAR
is for an IO or memory BAR, respectively.

Reviewed by: imp

- Add missing constants for subclasses.
- Add a few progif constants as well.

Revisit the watchdogs: Resetting the error to EINVAL after failing to set the
watchdog might hide the succesful arming of an earlier one. Accept that on
failing to arm any watchdog (because of non-supported timeouts) EOPNOTSUPP is
returned instead of the more appropriate EINVAL.

MFC after: 3 days

Use pause() rather than tsleep() on stack variables and function pointers.

o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@

Align the interfaces for the various watchdogs and make the interface
behave as expected.

Also:
- Return an error if WD_PASSIVE is passed in to the ioctl as only
WD_ACTIVE is implemented at the moment. See sys/watchdog.h for an
explanation of the difference between WD_ACTIVE and WD_PASSIVE.
- Remove the I_HAVE_TOTALLY_LOST_MY_SENSE_OF_HUMOR define. If you've
lost your sense of humor, than don't add a define.

Specific changes:

i80321_wdog.c
Don't roll your own passive watchdog tickle as this would defeat the
purpose of an active (userland) watchdog tickle.

ichwd.c / ipmi.c:
WD_ACTIVE means active patting of the watchdog by a userland process,
not whether the watchdog is active. See sys/watchdog.h.

kern_clock.c:
(software watchdog) Remove a check for WD_ACTIVE as this does not make
sense here. This reverts r1.181.

Fix some edge cases in detach() as well as a memory leak if we fail to
talk to the BMC.

Reported by: Alexander Logvinov : ports at logvinov_com
MFC after: 1 week

ipmi_polled_enqueue_request() is already called with the lock held, just
assert it rather than recursing.

Reported by: mjacob
Pointy hat: jhb
MFC after: 3 days

The IPMI spec is ambiguous (or rather, it contradicts itself) about whether
or not the OS has to wait for RX_RDY or TX_RDY to be set before the OS sets
the control code in the control/status register. Looking at the interface
design, it seems that RX_RDY and TX_RDY are probably there to protect
access to the data register and have nothing to do with the control/status
register. Nevertheless, try to take what I think is the more conservative
approach and always wait for the appropriate [TR]X_RDY flag to be set
before writing any of the WR_NEXT, WR_END, RD_START, or RD_NEXT control
codes to the control/status register.

Add detailed debugging printf's for SMIC under SMIC_DEBUG.

Oops, don't toss the last character read during an SMIC transaction with
at least 1 data byte beyond the completion code.

Tested by: Terry Kennedy <terry at tmk dot com>

Fix a memory leak in ipmi_unload().

CID: 1542
Found by: Coverity Prevent

Map pmap_{un,}mapbios() to pmap_{un,}mapdev() on 6.x and earlier.

Update the ipmi(4) driver:
- Split out the communication protocols into their own files and use
a couple of function pointers in the softc that the commuication
protocols setup in their own attach routine.
- Add support for the SSIF interface (talking to IPMI over SMBus).
- Add an ACPI attachment.
- Add a PCI attachment that attaches to devices with the IPMI interface
subclass.
- Split the ISA attachment out into its own file: ipmi_isa.c.
- Change the code to probe the SMBIOS table for an IPMI entry to just use
pmap_mapbios() to map the table in rather than trying to setup a fake
resource on an isa device and then activating the resource to map in the
table.
- Make bus attachments leaner by adding attach functions for each
communication interface (ipmi_kcs_attach(), ipmi_smic_attach(), etc.)
that setup per-interface data.
- Formalize the model used by the driver to handle requests by adding an
explicit struct ipmi_request object that holds the state of a given
request and reply for the entire lifetime of the request. By bundling
the request into an object, it is easier to add retry logic to the various
communication backends (as well as eventually support BT mode which uses
a slightly different message format than KCS, SMIC, and SSIF).
- Add a per-softc lock and remove D_NEEDGIANT as the driver is now MPSAFE.
- Add 32-bit compatibility ioctl shims so you can use a 32-bit ipmitool
on FreeBSD/amd64.
- Add ipmi(4) to i386 and amd64 NOTES.

Submitted by: ambrisko (large portions of 2 and 3)
Sponsored by: IronPort Systems, Yahoo!
MFC after: 6 days

Since DELAY() was moved, most <machine/clock.h> #includes have been
unnecessary.

Don't conflict with the DEBUG define.

Add an OpenIPMI mostly compatible driver. This driver was developed
to work with ipmitools. It works with other tools that have an OpenIPMI
driver interface. The port will need to get updated to used this.
I have not implemented the IPMB mode yet so ioctl's for that don't
really do much otherwise it should work like the OpenIPMI version.
The ipmi.h definitions was derived from the ipmitool header file.
The bus attachments are done for smbios and pci/smbios. Differences
in bus probe order for modules/static are delt with. ACPI attachment
should be done.

This drivers registers with the watchdod(4) interface

Work to do:
- BT interface
- IPMB mode

This has been tested on Dell PE2850, PE2650 & PE850 with i386 & amd64
kernel.

I will link this into the build on next week.

Tom Rhodes, helped me with the man page.

Sponsored by: IronPort Systems Inc.
Inspired from: ipmitool & Linux