c852533379
Some brya variants will use a GN20 series Nvidia GPU, which requires quite a bit of ACPI support code to be written for it. This patch lands a decent bit of the initial code for it on the brya platform, including: 1) PEG RTD3 methods 2) DGPU power operations (RTD3 and GCOFF, NVJT _DSM and other Methods) 3) NVOP _DSM method There will be more support to come later, this is all written to specifications from the Nvidia Software Design Guide for GN20. BUG=b:214581763 TEST=build patch train Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org> Change-Id: Ifce1610210e9636e87dda4b55c8287334adfcc42 Reviewed-on: https://review.coreboot.org/c/coreboot/+/62931 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com> Reviewed-by: Subrata Banik <subratabanik@google.com>
70 lines
1.8 KiB
Plaintext
70 lines
1.8 KiB
Plaintext
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#define NVOP_FUNC_SUPPORT 0x00
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#define NVOP_FUNC_GET_OBJ_BY_TYPE 0x10
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#define NVOP_FUNC_OPTIMUS_CAPS 0x1a
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#define NVOP_FUNC_OPTIMUS_STATUS 0x1b
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Method (NVOP, 2, Serialized)
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{
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Switch (ToInteger (Arg0))
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{
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Case (NVOP_FUNC_SUPPORT)
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{
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Return (ITOB (
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(1 << NVOP_FUNC_SUPPORT) |
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(1 << NVOP_FUNC_OPTIMUS_CAPS) |
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(1 << NVOP_FUNC_OPTIMUS_STATUS)))
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}
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Case (NVOP_FUNC_OPTIMUS_CAPS)
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{
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CreateField(Arg1, 0, 1, FLUP) /* Flag Update */
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CreateField(Arg1, 1, 1, CSOT) /* Change configuration Space Owner Target */
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CreateField(Arg1, 2, 1, CSOW) /* Change configuration Space Owner Write */
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CreateField(Arg1, 24, 2, NPCE) /* New Power Control Enable setting */
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/* Change Optimus power control capabilities */
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If (ToInteger (FLUP) != 0 && ToInteger (NPCE) != 0)
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{
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OPCS = NPCE
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}
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/* Change PCI configuration space save/restore owner */
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If (ToInteger (CSOW) == 1)
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{
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PCIO = CSOT
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}
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/* Current GPU Control Status */
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If (\_SB.PCI0.PEG0.PGPR._STA == 1)
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{
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Local0 = 3
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}
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Else
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{
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Local0 = 0
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}
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Return (ITOB (
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(1 << 0) | /* Optimus Enabled */
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(Local0 << 3) | /* Current GPU Control Status */
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(0 << 6) | /* Shared Discrete GPU Hotplug Capabilities */
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(0 << 7) | /* MUXed DDC/Aux Capabilities */
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(PCIO << 8) | /* PCIe Configuration Space Owner */
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(1 << 24) | /* Platform Optimus Power Capabilities */
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(0 << 27))) /* Optimus HD Audio Codec Capabilities */
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}
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Case (NVOP_FUNC_OPTIMUS_STATUS)
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{
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Return (ITOB (
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(0 << 0) | /* Optimus Audio Codec Control */
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(0 << 2) | /* Request GPU Power State */
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(0 << 4) | /* Evaluate Requested GPU Power State */
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(0 << 5) | /* Request Optimus Adapter Policy */
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(0 << 7))) /* Evaluate Requested Optimus Adapter Selection */
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}
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}
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Return (NV_ERROR_UNSUPPORTED)
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}
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