The gpu_buffer, gpu_display, and gpu_renderer refer to crates outside of
the devices crate. Typically importing from other crates is written as:
use name_of_crate::path::to::ThingToImport;
TEST=cargo check --features gpu
Change-Id: Ic7b1a3fa6b4a06fca7f3e9ed09cbd2a9982279cc
Reviewed-on: https://chromium-review.googlesource.com/1565726
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
The devices crate imports things from usb_util which is a separate
crate. Importing from a crate normally looks like:
use name_of_crate::path::to::ThingToImport;
In the case it would be e.g.:
use usb_util::hotplug::UsbHotplugHandler;
Importing these things through crate::usb::usb_util is unnecessary.
TEST=cargo check
Change-Id: I70554639a71b2423c1e13a30361d5f9d92e9d9a9
Reviewed-on: https://chromium-review.googlesource.com/1565725
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
Separated out of CL:1513058 to make it possible to land parts
individually while the affected crate has no other significant CLs
pending. This avoids repeatedly introducing non-textual conflicts with
new code that adds `use` statements.
TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
Change-Id: I964a198b54dfa7b98fa2f49a404fda3d09c0f44f
Reviewed-on: https://chromium-review.googlesource.com/1519693
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
To avoid wasting time re-sorting these things (CL:1492612).
https://docs.rs/remain
Disclaimer: I wrote the macro.
This CL adds #[sorted] attributes to those Error enums that seemed to
have made some effort to be in sorted order.
TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
TEST=emerge-nami crosvm
TEST=local kokoro
CQ-DEPEND=CL:1524247
Change-Id: I89685ced05e2f149fa189ca509bc14c70aebb531
Reviewed-on: https://chromium-review.googlesource.com/1515998
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
This change implements service_irq, end_of_interrupt, and just enough to
add some basic tests for those.
Still TODO: Interrupt routing (and tests for that) and tests that
require additional functionality.
BUG=chromium:908689
TEST=Unit tests in file. Integration testing is blocked on rest of split-irqchip being implemented.
Change-Id: Ia8418f9a8bec92b53d99cdafb92f05f82eafa2b1
Reviewed-on: https://chromium-review.googlesource.com/1558935
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
This de-duplicates the two separate build.rs files dealing with proto
compilation. The trunks interface.proto will be exposed under
protos::trunks and the plugin proto will be exposed under protos::plugin.
BUG=none
TEST=cargo check
TEST=cargo check --features tpm
TEST=cargo check --features plugin
TEST=cargo check --features tpm,plugin
TEST=FEATURES=test emerge-nami crosvm
TEST=FEATURES=test USE=crosvm-tpm emerge-nami crosvm
TEST=FEATURES=test USE=crosvm-plugin emerge-nami crosvm
TEST=FEATURES=test USE='crosvm-tpm crosvm-plugin' emerge-nami crosvm
TEST=local kokoro
CQ-DEPEND=CL:1553971
Change-Id: I203b654a38e9d671a508156ae06dfb6f70047c4f
Reviewed-on: https://chromium-review.googlesource.com/1556417
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Host/device sockets are now created as a pairs of MsgSockets instead of UnixSeqpacket sockets.
BUG=chromium:950663
TEST=cargo check
TEST=cargo test
Change-Id: I8f61a711fe3c2547bf5d18fcfa23bfd0dc0ef5fd
Reviewed-on: https://chromium-review.googlesource.com/1559041
Commit-Ready: Jakub Staroń <jstaron@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Jakub Staroń <jstaron@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
These are import paths in new code added since CL:1513054 that need to
be made compatible with 2018 edition's treatment of paths.
TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
Change-Id: Icb3ecf2fb2015332e0c03cdc22bff2ecab2c40df
Reviewed-on: https://chromium-review.googlesource.com/1559264
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
This may help reduce cases of conflicts between independent CLs each
appending a dependency at the bottom of the list, of which I hit two
today rebasing some of my open CLs.
TEST=cargo check --all-features
Change-Id: Ief10bb004cc7b44b107dc3841ce36c6b23632aed
Reviewed-on: https://chromium-review.googlesource.com/1557172
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Found by running: `cargo rustc -- -D bare_trait_objects`
Bare trait objects like `&Trait` and `Box<Trait>` are soft-deprecated in
2018 edition and will start warning at some point.
As part of this, I replaced `Box<Trait + 'static>` with `Box<dyn Trait>`
because the 'static bound is implied for boxed trait objects.
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
TEST=local kokoro
Change-Id: I41c4f13530bece8a34a8ed1c1afd7035b8f86f19
Reviewed-on: https://chromium-review.googlesource.com/1513059
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
The PIC device that this commit provides isn't quite complete: It needs to
interact with a userspace APIC in order to properly route interrupts,
but crosvm does not yet have a userspace APIC. In the interest of not
making this CL too much larger, the userspace APIC implementation will
come in a future CL.
BUG=chromium:908689
TEST=Unit tests in file. Integration testing is blocked on rest of split-irqchip being implemented.
Change-Id: Id1f23da12fa7b83511a2a4df895b0cfacdbc559e
Reviewed-on: https://chromium-review.googlesource.com/1475057
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Prior to this change empty command buffers would generate errors and syslogs.
BUG=None
TEST=glbench nop_virtgpu_execbuffer test
Change-Id: I456fb342c945beebe121e22543bd93fe41cc5cbe
Reviewed-on: https://chromium-review.googlesource.com/1532796
Commit-Ready: David Riley <davidriley@chromium.org>
Tested-by: David Riley <davidriley@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
We were lucky that adb does not trigger this code path, but Arduino do.
BUG=None
TEST=local build, deploy and run
Change-Id: I0cf02c5de0a73af4e5cb6f5b668cef6606ed166b
Reviewed-on: https://chromium-review.googlesource.com/1542032
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Set up the infrastructure for reporting block size in the virtio-blk
device model. For now, we'll keep reporting SECTOR_SIZE (512), which is
the default block size that is assumed if we don't report it. This
prepares us to easily switch the reported block size in the future.
BUG=chromium:942700
TEST=Boot Crostini on nami with an existing VM and container
Change-Id: I983817743c40e8278fe6cb9a10498011a8887ec9
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1526334
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Checks for the IFF_NO_PI and IFF_VNET_HDR flags, failing if those are
not set.
Sets the offload and vnet header sizes to the required values, instead
of trusting the values on the interface.
Bug=b/128686192
Change-Id: Ibbbfbf3cdedd6e64cdcfb446bcdfb26b4fd38395
Reviewed-on: https://chromium-review.googlesource.com/1526771
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
VirtioPciCap omits the `cap_vndr` and `cap_next` fields from it's
definition, deferring the instantiation of these bytes to the
add_capability method in PCI configuration. There is even a
comment on add_capability that mentions this omission.
Unfortunately, comments tend not to be read, and mismatches between
the linux headers and crosvm structures can result in some subtle
and tricky to debug bugs, especially when implementing other types
of virtio capabilties that subsume VirtioPciCap.
Case in point, when implementing the VirtioPciShmCap (used by
virtio-fs), this subtle mismatch resulted in a bug where an
additional 2 bytes of padding were inserted between the `cap` member
and the `offset_hi` member (see CL:1493014 for the exact struct).
Since the cap_len field was instantiated using mem::sizeof Self, the
additional padding just-so-happened to be the perfect ammount to sneak
past the sanity checks in add_capabilities. The bug manifested itself by
shifting over the length_hi field by 16 bits, resulting in much larger
than expected cache sizes.
This CL brings the VirtioPciCap structures in-line with their
linux/virtio_pci.h counterparts, marking the structures as repr(C) (as
opposed to repr(packed)) and leaving the cap_vndr and cap_next members
in the struct, noting that they will be automatically populated in
add_capability.
BUG=chromium:936567
TEST=cargo test -p devices, boot vm
Change-Id: Ia360e532b58070372a52346e85dd4e30e81ace7a
Reviewed-on: https://chromium-review.googlesource.com/1540397
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Removes an unnecessary Option from the return type.
Also added a note about moving PCI methods out of the VirtioDevice
trait, as the trait shouldn't be tied to any particular transport layer.
BUG=chromium:936567
TEST=cargo build --features=gpu
Change-Id: I2c75c830bbe2d2b4a15461e8497535c526775bbe
Reviewed-on: https://chromium-review.googlesource.com/1536206
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Using non-linear buffer seems to be safe based on the apps I've
tested. This is similiar to the ARC++ use case, which also doesn't
explicitly send modifiers to Chrome.
BUG=chromium:945033
TEST=clear_clear goes from 980 mpixels --> 6797.90 mpixels
on Nami
Change-Id: I2dcb78366c2d2d83d64bb23f6da1f07c8747819c
Reviewed-on: https://chromium-review.googlesource.com/1538463
Commit-Ready: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Riley <davidriley@chromium.org>
Reviewed-by: Chia-I Wu <olv@google.com>
Reviewed-by: Stéphane Marchesin <marcheu@chromium.org>
Building off CL:1290293
Instead of having a seperate GuestMemoryManager, this adds SharedMemory
as a Arc'd member of GuestMemory. This is nice since it removes the need
to plumb the Manager struct throughout the codebase.
BUG=chromium:936567
TEST=cargo test -p sys_util
Change-Id: I6fa5d73f7e0db495c2803a040479818445660345
Reviewed-on: https://chromium-review.googlesource.com/1493013
Commit-Ready: Daniel Prilik <prilik@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
None of instances of EventHandler::on_event actually used the fd. The
PollfdChangeHandler::remove_poll_fd callback fabricated a potentially
valid fd (0), which went undetected because nobody used it.
Additionally, using RawFds almost always requires unsafe and should be
avoided.
CQ-DEPEND=CL:1522214
BUG=chromium:831850
TEST=cargo test
Change-Id: I095edbcad317e4832b1fb29fd08d602fbde4fd5d
Reviewed-on: https://chromium-review.googlesource.com/1525135
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
This cleans up some feature flag plumping for libusb sandboxing as well.
BUG=chromium:831850
TEST=cargo test
CQ-DEPEND=CL:1512762
Change-Id: Ic70784db204ddced94498944b021bcb7dd708bb1
Reviewed-on: https://chromium-review.googlesource.com/1522214
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
Device can be assigned to slot. Command ring handles usb commands,
transfer ring handles usb transfers.
CQ-DEPEND=CL:1510819
BUG=chromium:831850
TEST=cargo test
Change-Id: Ib0836ee518d1c7a3e902630c7ea04e29b9496c80
Reviewed-on: https://chromium-review.googlesource.com/1510820
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Those are bridges between xhci and backend.
CQ-DEPEND=CL:1510818
BUG=chromium:831850
TEST=cargo test
Change-Id: I04feab449d48b0c908aeebfda08d1869239cbe6f
Reviewed-on: https://chromium-review.googlesource.com/1510819
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
for ring buffer, guest kernel is producer and crosvm is consumer
CQ-DEPEND=1510817
BUG=chromium:831850
TEST=cargo test
Change-Id: Ib62d2b42de1a77ff71ca0e2a0066feacc56dddc1
Reviewed-on: https://chromium-review.googlesource.com/1510818
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
This CL adds some necessary constants and types, as well as a few
skeleton function declarations, for an IOAPIC device.
I'm sending this CL first in the interest of minimizing CL size and
making future CLs easier to review.
TEST=Built
BUG=chromium:908689
Change-Id: Ib8ae37e0092c31d7cb8073070f9592baed236323
Reviewed-on: https://chromium-review.googlesource.com/1520809
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: Miriam Zimmerman <mutexlox@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
Implementing this macro by ignoring the args and expanding to nothing
makes it possible to pass invalid args like `usb_debug!("{}")`. Use `if
false` instead to ensure that the args are valid formatter args.
As part of this, fix a call to a non-existent function inside one of the
usb_debug invocations.
TEST=cargo check devices
Change-Id: Id82dad7b021060dce7b4d3b828bbd21aaa6ef410
Reviewed-on: https://chromium-review.googlesource.com/1518730
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
The regs_reg_overlap() test is a panic test but the function that it is
testing only uses debug_asserts so the test will fail if debug
assertions are disabled. Only run the test when debug assertions are
enabled.
BUG=chromium:940668
TEST=`FEATURES=test USE=-cros-debug emerge-nami crosvm`
Change-Id: Ie722cb49908ae4c4a9ecc5f248a6ec25fbcc05c9
Reviewed-on: https://chromium-review.googlesource.com/1518729
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jeffrey Kardatzke <jkardatzke@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
This is an easy step toward adopting 2018 edition eventually, and will
make any future CL that sets `edition = "2018"` this much smaller.
The module system changes in Rust 2018 are described here:
https://doc.rust-lang.org/edition-guide/rust-2018/module-system/path-clarity.html
Generated by running:
cargo fix --edition --all
in each workspace, followed by bin/fmt.
TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
Change-Id: I000ab5e69d69aa222c272fae899464bbaf65f6d8
Reviewed-on: https://chromium-review.googlesource.com/1513054
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
Usb implementation will use usb_debug to log verbose debug logs. It will
be turned off by default.
BUG=chromium:831850
TEST=local build
Change-Id: Ieaa22e57e624841a5f78a6a1a1874351bbd77a86
Reviewed-on: https://chromium-review.googlesource.com/1510813
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
event_loop: event loop based on poll context.
async_job_queue: queue a job, it will be invoked on event loop. This
could be used to invoke a function without holding any locks.
BUG=chromium:831850
TEST=local build
Change-Id: Iab61ac43221bf5d635a0138073d7f88401e5ab07
Reviewed-on: https://chromium-review.googlesource.com/1509852
Commit-Ready: Jingkui Wang <jkwang@google.com>
Tested-by: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
virtio devices should be able to specify capabilities
BUG=chromium:936567
TEST=boot vm
Change-Id: I049f9967eb59a7904528fff5aea844e30c636e28
Reviewed-on: https://chromium-review.googlesource.com/1493012
Commit-Ready: Daniel Prilik <prilik@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Very similar to the trackpad device, it has the INPUT_PROP_DIRECT
property and does not support any buttons, just touch events.
Change-Id: I2c963013e402ff2aa1b4b529c6c494dd57f4add9
Reviewed-on: https://chromium-review.googlesource.com/1509697
Commit-Ready: Jorge Moreira Broche <jemoreira@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
underflow occurs when configuring a 64 bit register with a <33 bit
address.
BUG=chromium:924405
TEST=boot VM
Change-Id: I53a309b7bff3c91012bacb12d9fc9f8ceed68699
Reviewed-on: https://chromium-review.googlesource.com/1493011
Commit-Ready: Daniel Prilik <prilik@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
u64 register callback will only be invoked when the write is done.
BUG=chromium:831850
TEST=local build
CQ-DEPEND=CL:1509514
Change-Id: Id0be69535898fdcc4ba24d3151df7a5107a2725b
Reviewed-on: https://chromium-review.googlesource.com/1509515
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Jingkui Wang <jkwang@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Then we don't need to unwrap
BUG=chromium:831850
TEST=cargo test
CQ-DEPEND=CL:1506828
Change-Id: I4200ea6351d61df1974e5e4c8583e783b21ea0eb
Reviewed-on: https://chromium-review.googlesource.com/1509514
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Jingkui Wang <jkwang@google.com>
Reviewed-by: Jingkui Wang <jkwang@google.com>
Enough failure cases have been added to `add_pci_bar` and
`add_pci_capabilities` that they should return unique errors instead of
an `Option`.
BUG=none
TEST=cargo test in devices
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Change-Id: Ice2a06d2944011f95707f113f9d709da15c90cfe
Reviewed-on: https://chromium-review.googlesource.com/1497740
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
