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instead
Only one ACPI device should be added to a PCIe root port. For the root
ports which already have device created, the generated code from this
driver needs to be merged with the existing device.
By default, this driver will create new device named DEV0.
This change allows to generate code under an existing device.
ex: (generate code under PXSX):
Scope (\_SB.PCI0.RP01.PXSX)
{
Name (_DSD, Package (0x02) // _DSD: Device-Specific Data
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301")
Package (0x01)
{
Package (0x02)
{
"UntrustedDevice",
One
}
}
})
}
BUG=b:221250331
BRANCH=firmware-brya-14505.B
Signed-off-by: Cliff Huang <cliff.huang@intel.com>
Change-Id: I80634bbfc2927f26f2a55a9c244eca517c437079
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62301
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
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In order to align with established standards for establishing DMA
boundaries[1] from ACPI, the UntrustedDevice property has been renamed
to DmaProperty, which follows Microsoft's implementation. After
discussions with Microsoft, they have agreed to make the `UID` property
optional, so it is left out here, and instead it can be applied to:
1) Internal PCI devices
2) PCIe root ports
3) Downstream PCI(e) devices
[1]: https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports
BUG=b:215424986
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: Id70e916532e3d3d70305fc61473da28c702fc397
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62435
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
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This new chip driver will be used for attaching ACPI properties to PCIe
endpoints. The first property it supports is "UntrustedDevice." This
property can be used by a payload to, e.g., restrict the device to its
own IOMMU domain for security purposes. The new property is added by
adding a _DSD and an integer property set to 1.
Example of the property from google/brya0:
Scope (\_SB.PCI0.RP01)
{
Device (DEV0)
{
Name (_ADR, 0x0000000000000000) // _ADR: Address
Name (_DSD, Package (0x02) // _DSD: Device-Specific Data
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x01)
{
Package (0x02)
{
"UntrustedDevice",
One
}
}
})
}
}
BUG=b:215424986
TEST=boot patch train on google/brya0, dump SSDT, see above for snippet
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I53986614dcbf4d10a6bb4010e131f5ff5a9d25cf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61627
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
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This driver was inspired from soc/intel/common/block/pci/rtd3. I decided
to copy and modify it because the Intel driver has a lot of Intel
specific code.
This driver has been stripped down to only provide a power resource and
set the StorageD3Enable property. This driver is SoC agnostic and does
not handle suspending the actual PCIe root port. That should be
implemented by an SoC specific driver.
This is required for Guybrush to suspend/resume properly because the
NVMe power is tied to the S0 power rails, so the kernel needs to place
the device into D3.
BUG=b:184617186
TEST=Guybrush is able to suspend/resume properly. Also see power
resource get enabled / disabled.
[ 56.075559] power-0416 __acpi_power_off : Power resource [RTD3] turned off
[ 56.075562] device_pm-0279 device_set_power : Device [PXSX] transitioned to D3cold
[ 56.075567] pci_pm_suspend_noirq: nvme 0000:02:00.0: PCI PM: Suspend power state: D3cold
[ 56.075569] nvme 0000:02:00.0: pci_pm_suspend_noirq+0x0/0x413 returned 0 after 15978 usecs
[ 123.464874] nvme 0000:02:00.0: calling pci_pm_resume_noirq+0x0/0x11d @ 7, parent: 0000:00:02.4
[ 123.464891] acpi_device_set_power: ACPI: \_SB_.PCI0.GP14.PXSX: Power state change: D3cold -> D0
[ 123.464982] power-0360 __acpi_power_on : Power resource [RTD3] turned on
[ 123.464984] device_pm-0279 device_set_power : Device [PXSX] transitioned to D0
[ 123.465039] nvme 0000:02:00.0: pci_pm_resume_noirq+0x0/0x11d returned 0 after 158 usecs
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I2adfc925183ff7a19ab97e89212bc87c40d552d0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54966
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
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