Add an implementatation of the 'Virtual Machine Generation ID' spec to
Bhyve. The spec provides a randomly generated GUID (at bhyve start) in
device memory, along with an ACPI device with _CID VM_Gen_Counter and ADDR
evaluating to a Package pointing at that GUID.
A GPE is defined which Notifies the ACPI Device when the generation changes
(such as when a snapshot is rolled back). At this time, Bhyve does not
support snapshotting, so the GPE is never actually raised.
Suggested by: rpokala
Discussed with: grehan
Differential Revision: https://reviews.freebsd.org/D23165
The bhyve acpi MADT table was given a static space of 256 (0x100) bytes,
this is enough space to allow VM_MAXCPU to be 21, this patch changes that
so VM_MAXCPU can be of arbitrary value and not overflow the space by
actually calculating the space needed for the table.
PR: 212782
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Approved by: bde (mentor), jhb (maintainer)
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D18815
Also stdarg(3) says that each invocation of va_start() must be paired
with a corresponding invocation of va_end() in the same function. [1]
Reported by: Coverity
CID: 1194318[0] and 1194332[1]
Discussed with: jhb
MFC after: 4 weeks.
Sponsored by: iXsystems Inc.
Differential Revision: https://reviews.freebsd.org/D15548
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
No functional change intended.
values. Therefore the bit width of the "PM Timer Block" was actually being
interpreted as 50-bits instead of the expected 32-bit.
This eliminates an error message emitted by a Linux 3.17 guest during boot:
"Invalid length for FADT/PmTimerBlock: 50, using default 32"
Reviewed by: grehan
MFC after: 1 week
The new IASL from the recent acpi-ca import will error out
if it doesn't see these new fields, which were previously
reserved.
Reported by: lme
Reviewed by: neel
Add the ACPI MCFG table to advertise the extended config memory window.
Introduce a new flag MEM_F_IMMUTABLE for memory ranges that cannot be deleted
or moved in the guest's address space. The PCI extended config space is an
example of an immutable memory range.
Add emulation for the "movzw" instruction. This instruction is used by FreeBSD
to read a 16-bit extended config space register.
CR: https://phabric.freebsd.org/D505
Reviewed by: jhb, grehan
Requested by: tychon
the legacy 8259A PICs.
- Implement an ICH-comptabile PCI interrupt router on the lpc device with
8 steerable pins configured via config space access to byte-wide
registers at 0x60-63 and 0x68-6b.
- For each configured PCI INTx interrupt, route it to both an I/O APIC
pin and a PCI interrupt router pin. When a PCI INTx interrupt is
asserted, ensure that both pins are asserted.
- Provide an initial routing of PCI interrupt router (PIRQ) pins to
8259A pins (ISA IRQs) and initialize the interrupt line config register
for the corresponding PCI function with the ISA IRQ as this matches
existing hardware.
- Add a global _PIC method for OSPM to select the desired interrupt routing
configuration.
- Update the _PRT methods for PCI bridges to provide both APIC and legacy
PRT tables and return the appropriate table based on the configured
routing configuration. Note that if the lpc device is not configured, no
routing information is provided.
- When the lpc device is enabled, provide ACPI PCI link devices corresponding
to each PIRQ pin.
- Add a VMM ioctl to adjust the trigger mode (edge vs level) for 8259A
pins via the ELCR.
- Mark the power management SCI as level triggered.
- Don't hardcode the number of elements in Packages in the source for
the DSDT. iasl(8) will fill in the actual number of elements, and
this makes it simpler to generate a Package with a variable number of
elements.
Reviewed by: tycho
This is done by representing each bus as root PCI device in ACPI. The device
implements the _BBN method to return the PCI bus number to the guest OS.
Each PCI bus keeps track of the resources that is decodes for devices
configured on the bus: i/o, mmio (32-bit) and mmio (64-bit). These windows
are advertised to the guest via the _CRS object of the root device.
Bus 0 is treated specially since it consumes the I/O ports to access the
PCI config space [0xcf8-0xcff]. It also decodes the legacy I/O ports that
are consumed by devices on the LPC bus. For this reason the LPC bridge can
be configured only on bus 0.
The bus number can be specified using the following command line option
to bhyve(8): "-s <bus>:<slot>:<func>,<emul>[,<config>]"
Discussed with: grehan@
Reviewed by: jhb@
LPC devices. Among other things, the LPC serial ports now appear as
ACPI devices.
- Move the info for the top-level PCI bus into the PCI emulation code and
add ResourceProducer entries for the memory ranges decoded by the bus
for memory BARs.
- Add a framework to allow each PCI emulation driver to optionally write
an entry into the DSDT under the \_SB_.PCI0 namespace. The LPC driver
uses this to write a node for the LPC bus (\_SB_.PCI0.ISA).
- Add a linker set to allow any LPC devices to write entries into the
DSDT below the LPC node.
- Move the existing DSDT block for the RTC to the RTC driver.
- Add DSDT nodes for the AT PIC, the 8254 ISA timer, and the LPC UART
devices.
- Add a "SuperIO" device under the LPC node to claim "system resources"
aling with a linker set to allow various drivers to add IO or memory
ranges that should be claimed as a system resource.
- Add system resource entries for the extended RTC IO range, the registers
used for ACPI power management, the ELCR, PCI interrupt routing register,
and post data register.
- Add various helper routines for generating DSDT entries.
Reviewed by: neel (earlier version)
to SIGTERM when ACPI is enabled. Sending SIGTERM to the hypervisor when an
ACPI-aware OS is running will now trigger a soft-off allowing for a graceful
shutdown of the guest.
- Move constants for ACPI-related registers to acpi.h.
- Implement an SMI_CMD register with commands to enable and disable ACPI.
Currently the only change when ACPI is enabled is to enable the virtual
power button via SIGTERM.
- Implement a fixed-feature power button when ACPI is enabled by asserting
PWRBTN_STS in PM1_EVT when SIGTERM is received.
- Add support for EVFILT_SIGNAL events to mevent.
- Implement support for the ACPI system command interrupt (SCI) and assert
it when needed based on the values in PM1_EVT. Mark the SCI as active-low
and level triggered in the MADT and MP Table.
- Mark PCI interrupts in the MP Table as active-low in addition to level
triggered.
Reviewed by: neel
- Implement the PM1_EVT and PM1_CTL registers required by ACPI.
The PM1_EVT register is mostly a dummy as bhyve doesn't support any
of the hardware-initiated events. The only bit of PM1_CNT that is
implemented are the sleep request bits (SPL_EN and SLP_TYP) which
request a graceful power off for S5. In particular, for S5, bhyve
exits with a non-zero value which terminates the loop in vmrun.sh.
- Emulate the Reset Control register at I/O port 0xcf9 and advertise
it as the reset register via ACPI.
- Advertise an _S5 package.
- Extend the in/out interface to allow an in/out handler to request
that the hypervisor trigger a reset or power-off.
- While here, note that all vCPUs in a guest support C1 ("hlt").
Reviewed by: neel (earlier version)
- Add a generic routine to trigger an LVT interrupt that supports both
fixed and NMI delivery modes.
- Add an ioctl and bhyvectl command to trigger local interrupts inside a
guest. In particular, a global NMI similar to that raised by SERR# or
PERR# can be simulated by asserting LINT1 on all vCPUs.
- Extend the LVT table in the vCPU local APIC to support CMCI.
- Flesh out the local APIC error reporting a bit to cache errors and
report them via ESR when ESR is written to. Add support for asserting
the error LVT when an error occurs. Raise illegal vector errors when
attempting to signal an invalid vector for an interrupt or when sending
an IPI.
- Ignore writes to reserved bits in LVT entries.
- Export table entries the MADT and MP Table advertising the stock x86
config of LINT0 set to ExtInt and LINT1 wired to NMI.
Reviewed by: neel (earlier version)
commit level triggered interrupts would work as long as the pin was not shared
among multiple interrupt sources.
The vlapic now keeps track of level triggered interrupts in the trigger mode
register and will forward the EOI for a level triggered interrupt to the
vioapic. The vioapic in turn uses the EOI to sample the level on the pin and
re-inject the vector if the pin is still asserted.
The vhpet is the first consumer of level triggered interrupts and advertises
that it can generate interrupts on pins 20 through 23 of the vioapic.
Discussed with: grehan@
actual value read by the guest from the device. The IOAPIC ID is now set to
zero in both MPtable/ACPI tables as well as in the ioapic device emulation.
Pointed out by: grehan@
bhyve supports a single timer block with 8 timers. The timers are all 32-bit
and capable of being operated in periodic mode. All timers support interrupt
delivery using MSI. Timers 0 and 1 also support legacy interrupt routing.
At the moment the timers are not connected to any ioapic pins but that will
be addressed in a subsequent commit.
This change is based on a patch from Tycho Nightingale (tycho.nightingale@pluribusnetworks.com).
pin 2 of the IOAPIC.
Add an 'Interrupt Source Override' entry to the MADT to describe this
and start asserting interrupts on pin 2 in the 8254 device model.
Submitted by: Tycho Nightingale (tycho.nightingale@pluribusnetworks.com)
This should be sufficient for 10.0 and will do
until forthcoming work to avoid limitations
in this area is complete.
Thanks to Bela Lubkin at tidalscale for the
headsup on the apic/cpu id/io apic ASL parameters
that are actually hex values and broke when
written as decimal when 11 vCPUs were configured.
Approved by: re@
command line option "-m <memsize in MB>" to specify the memory size.
Prior to this change the user needed to explicitly specify the amount of
memory allocated below 4G (-m <lowmem>) and the amount above 4G (-M <highmem>).
The "-M" option is no longer supported by 'bhyveload' and 'bhyve'.
The start of the PCI hole is fixed at 3GB and cannot be directly changed
using command line options. However it is still possible to change this in
special circumstances via the 'vm_set_lowmem_limit()' API provided by
libvmmapi.
Submitted by: Dinakar Medavaram (initial version)
Reviewed by: grehan
Obtained from: NetApp
This seems prudent to do in its own right but it also opens up the possibility
of not having to mmap the entire guest address space in the 'bhyve' process
context.
Discussed with: grehan
Obtained from: NetApp
bhyve is intended to be a generic hypervisor, and not FreeBSD-specific.
(renaming internal routines will come later)
Reviewed by: neel
Obtained from: NetApp
The -A option will create the minimal set of required ACPI tables in
guest memory. Since ACPI mandates an IOAPIC, the -I option must also
be used.
Template ASL files are created, and then passed to the iasl compiler
to generate AML files. These are then loaded into guest physical mem.
In support of this, the ACPI PM timer is implemented, in 32-bit mode.
Tested on 7.4/8.*/9.*/10-CURRENT.
Reviewed by: neel
Obtained from: NetApp
Discussed with: jhb (a long while back)
