TO-562

Change-Id: I159ee8ae73d05bbf42c3e64238b16ab82e2e634f

Previously, certain errors would call an "out-of-band" error
response function if a response was requested. Unfortunately,
in the case of a multi-message operation, if any intermediate
messages caused an error, they would be silently dropped.

This patch addresses that issue by ensuring that for ALL
requests which have a valid txid, errors are "remembered"
and transmitted when a response is requested.

ZX-1581 #done

Change-Id: Ife2f91f6f756bb8333664c6f234cf12f31cbab16

ZX-1541 #done

Change-Id: I115b59c0991f15dd312d9199583ebe583735b004

Old iotxn mechanism locked behind IOTXN_LEGACY_SUPPORT.
It is necessary to support lower-layer drivers which
do not yet support the new protocol.

ZX-1579 #done

Change-Id: I8bddaf43bfc3daa5e24e0008e1e90825d3c9f206

On every VM exit, we check whether the guest timer was set. If so, we
setup a timer object to fire and inject an interrupt when the guest
expected one.

Previously, we would wait for a WFI before we setup a timer object,
which would cause us to incorrect inject a timer.

We also now ensure that interrupts are unmasked before we inject them.

Change-Id: I1a1a2319a6d358f5a86d45ee251bafb6156a22bd

llvm-project revision 343562fb40155031de118407e2d491e970f1bbd7.

Change-Id: I77a580c0a50d8d27022afb35b4d4f72a7c890621

It is now safe to pass reschedule=true to event_signal() in the
contexts where cbuf_write_char() is called, so change
cbuf_write_char() to do that and remove its "bool reschedule"
argument.  This means these code paths no longer need to return
INT_RESCHEDULE.

ZX-1490

Change-Id: I00b0099211fb01c2cdc01733809dff94d20c75fd

Recognize when no progress is being made in the paver buffer copy
thread and abort, killing the paver process, instead of waiting
forever. This allows us a more gracious exit when the tftp
connection goes south, giving us a chance to re-establish
communications.

ZX-1521

Change-Id: I7abcb315cbb04c4201c1c1c1dd04feb0bf6d5015

This test was sufficient for preventing the regression
of LE-388 using the old block protocol, where an iotxn_clone
would fail with invalid arguments, but with the new block protocol
the test could pass (incorrectly) if the vmo_off was miscalculated.

This path checks that the complex path of noncontiguous slice
access is validated against contiguous slice access reads.
This improvement prevents the regression, even with the incoming
new block protocol.

ZX-1578 #done

Change-Id: I034bfe2d90307f19b6ec69659d6ce01fa5feb38e

ResetCommonIrqBookkeeping is called from both LeaveLegacyIrqMode
and LeaveMsiIrqMode. The existing assert is written to assume
that if you have > 1 irq handlers then you have the handler table,
and otherwise you're using the singleton. However, the singleton path
also catches the case where this is called when you have no configured
handlers. This path is hit if a driver tries to enter MSI mode, then
bails out due to no backing MSI blocks being available in the platform
driver.

It appears safe to remove and refactor since all the work it does is
safe unconditionally.

ZX-1511 #in-progress
ZX-1512 #in-progress

Change-Id: I29eb70a5367df265f2b4b6ed7ecd766f06dc1441

blktest fails without blkdev_path being set properly, so make it clear
to the user and add handling for -h and incorrect execution.

Change-Id: Ief5e67441b62fab3f34c0cb8dcb2120148b6cd9c

The protocol handles mapping the device IO for the proxy devhost,
so it is not necessary for the driver to do this following get_bar
any longer.

Change-Id: I54d37e11f741707c3e6af213222fb309edb1cec9

Some things, like rand.c, want to be able to xor.

Change-Id: I74c56c14b429a83c4ce76aeab93f04e046eb982d

This allows to invoke mp_reschedule in Vcpu::Interrupt only if the VCPU
is actually running. It also simplifies the logic of Vcpu::Interrupt,
requiring less reading of tea leaves.

Change-Id: I0fd363e39838a66d53447c342ae0d399315f843f

Calling sched_reschedule() when arch_in_int_handler() is true is now
allowed (see preempt_disable).  This means we can remove uses of the
INT_RESCHEDULE return value.  We can instead call sched_reschedule()
or pass reschedule=true to functions that take a "reschedule"
argument.

ZX-1490

Change-Id: I2f777296db65558c4124fc8a522932fcf174bf82

Change-Id: I18a962d2cd5489cc760710be535627d865435201

- Added config_write to protocol and syscalls.
- Removed zx_pci_io_* syscalls as they are unused / unimplemented.

Change-Id: Ie495370c96e9fe74dbe0d6d5f58337f722ec1d35

Separating out this cosmetic change from an upcoming change.

Change-Id: I9b2caa49a39a23e260a7c2ded36a36dce517ebff

- bt-hci.h now includes "<zircon/types.h>"
- minor formatting fix

Change-Id: I1543b9d6fed2189e09ecd5936e4e36fce79f7a5f

Change-Id: I34f2f931c678bed146081e14e3cbfd4a043f6661

This allows a user to hit ctrl-d and receive a stracktrace, without the
need for an end marker.

Change-Id: I715a506fce9876f56f5e8eb98b69e3ec52656002

Until there is a decision to officially support vfork, remove the
function prototype and no-op implementation. This functionality isn't
needed to compile fuchsia.

Change-Id: I26f43ae3bdcde53ff5caabf159970042236a46d2

This patch will be obsolete when ZX-1541 is complete, but in the
meantime, it prevents blktest from failing.

ZX-1588 #done

Change-Id: Ic9e23c6f6d6ccd66ac54720a7c53680dc5a19da2

handles.md makes reference to many syscalls. Link to the syscall
documentation so the reader can learn more.

Change-Id: I8628659f68d0713fd2229e28dac5fc3f5043500e

The following were unused:

cbuf_read()
cbuf_peek_etc()
cbuf_peek_write()
cbuf_write_etc()
cbuf_write()
cbuf_advance_write()
cbuf_space_used()
cbuf_size()
cbuf_reset()

Change-Id: If3a30177fc7af5d4a3f1b6790698b8936578a6d1

The interface provided by the board driver to the platform bus
only supports retrieving protocols from the board driver,
so it is simpler to just have the board drivers set protocols
on the platform bus driver instead.

Change-Id: I2d0a04504102c4a49082b3d4eeba3cf4380dacab

Change-Id: I6833f1c2927ea9eecac2194b154439bbaeb96bf2

This change frees up the get() method in for a zx_time_t accessor in the
zx::time class.

Change-Id: Ia4cdc7e3e558df5ba0cfeedb27a442abf4d6f305

This implementation supports only supports writing to file descriptors
and defaults to stdout.

Change-Id: I2aaca1cb98e0f8951e1b791c40250dc503a93b3f

Added plumbing to platform-bus for proxying this new call,
but have not wired it up to any of the GPIO drivers yet.

Change-Id: If512ae3bbd830e36f4c9a03de82d4c065c8527c3

Refactor the aml-a113 driver so we can use it for other Amlogic platforms

Change-Id: I25f7a703e7006200643ae917317df4014e255de1

A wlanphy will represent a wlan peripheral, and a wlanif will represent
a soft MAC interface that the generic wlan MLME driver will bind to.
Only the phy will need ioctls.

Change-Id: I9a571480143dc04564daab93774c877f17cca1d7

Change-Id: Ib2e61ced13c3f32ff03ce3a8d6b46afafb537042

Change-Id: Ic3739a7d266cd811d3ef39927c8deac50ca19284

Hadn't really discovered any sort of systemic problem, but was falsely triggering
in various situations.

ZX-1527 #done

Change-Id: I260463e977ae8433a1eedb04544f4794261e5109

Possible race condition

Iotxn Thread  - Signals SDMMC_IOTXN_RECEIVED on worker_event
Worker Thread - Wakes up, removes txn from txn_list
Worker Thread - Does txn, loops (~line 345)
Worker Thread - (LOCKED) Removes "NULL" from txn_list
Worker Thread - (UNLOCKS)
Iotxn Thread  - (LOCKED) Adds txn to txn_list
Iotxn Thread  - (UNLOCKED) Signals SDMMC_IOTXN_RECEIVED
Worker Thread - (UNLOCKED) Sees txn is null, clears SDMMC_IOTXN_RECEIVED
Worker Thread - (UNLOCKED) Waits on worker_event for RECEIVED

Under these conditions, an iotxn_queue can occur, but the sdmmc driver
will not actually process it in the worker thread. Until another iotxn
is queued, this causes the sdmmc driver to appear to hang indefinitely.

ZX-1478 #done
ZX-1572 #done
LE-388 #done

Change-Id: Ifa150853be86e8ee53fa4efca3049109e7c0dfa4

Calling sched_reschedule() when arch_in_int_handler() is true is now
allowed (see preempt_disable).  This means we can remove uses of the
INT_RESCHEDULE return value.  We can instead call sched_reschedule()
or pass reschedule=true to functions that take a "reschedule"
argument.

Change event_signal() to allow passing reschedule=true down to
wait_queue_wake_one() or wait_queue_wake_all() when
arch_in_int_handler() is true.

Testing: This is easily tested because this code path gets exercised
even under QEMU, which catches the need to remove the DEBUG_ASSERT()
in event_signal_internal().

ZX-1490

Change-Id: I305196cf0266ee3e21fdb70db2d6382095bbdc8b

For most packages the default automated selection mechanism works,
but MODULE_PACKAGE_SRCS and MODULE_PACKAGE_INCS now allows that to
be overridden with explicit lists of sources and includes if needed.

Updated async*.pkg to use this.

Change-Id: I5569779b1f59710efd33015c3a54c575f089d820

This removes another use of INT_RESCHEDULE.  We set preempt_disable
instead of returning INT_RESCHEDULE.

Testing: This is easily tested as long as you boot Zircon with >1 CPU.
If this code path fails to set preempt_disable, the system will hang
soon after boot.

ZX-1490

Change-Id: Iec12ebd079267ebba0bbdfd48ba0089b508a4b6d

-Update docs to better explain what are the expectations
 of the |entry| function of the syscall
-Update C runtime to use the two args that the syscall
 now supports.

Existing test suffice.

Change-Id: I8d212ea2a3f9d036f8e1b30ddc91f6d2522fcdaa