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mb/google/brya/acpi: Add support for NBCI _DSM subfunction 

The Nvidia GPU supports another function named NBCI (NoteBook Common
Interface), which has some subfunctions which are required for the
Nvidia kernel driver to consume. The specification for this function
comes from the Nvidia GN20 Software Design Guide.

BUG=b:214581763
TEST=build

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I19eb9417923d297a084d6f5329682e91cd506a9e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64008
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
This commit is contained in:
Tim Wawrzynczak 2022-04-29 13:31:00 -06:00
parent 2a9b7d9313
commit f5cd9a15ba
2 changed files with 82 additions and 0 deletions
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8
src/mainboard/google/brya/acpi/gpu_top.asl
View File

@ -22,6 +22,7 @@ Scope (\_SB.PCI0.PEG0)
#include "power.asl"
#include "nvop.asl"
#include "nvjt.asl"
#include "nbci.asl"
Method (_DSM, 4, Serialized)
{
@ -39,6 +40,13 @@ Scope (\_SB.PCI0.PEG0)
Return (NVJT (Arg2, Arg3))
}
}
ElseIf (Arg0 == ToUUID (UUID_NBCI))
{
If (ToInteger (Arg1) >= REVISION_MIN_NBCI)
{
Return (NBCI (Arg2, Arg3))
}
}
Return (NV_ERROR_UNSUPPORTED)
}

74
src/mainboard/google/brya/acpi/nbci.asl Normal file
View File

@ -0,0 +1,74 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#define NBCI_FUNC_SUPPORT 0
#define NBCI_FUNC_PLATCAPS 1
#define NBCI_FUNC_GETOBJBYTYPE 16
#define NBCI_FUNC_GETCALLBACKS 19
/* 'DR' in ASCII, for DRiver Object */
#define NBCI_OBJTYPE_DR 0x4452
Method (NBCI, 2, Serialized)
{
Switch (ToInteger (Arg0))
{
Case (NBCI_FUNC_SUPPORT)
{
Return (ITOB(
(1 << NBCI_FUNC_SUPPORT) |
(1 << NBCI_FUNC_PLATCAPS) |
(1 << NBCI_FUNC_GETOBJBYTYPE)))
}
Case (NBCI_FUNC_PLATCAPS)
{
Return (ITOB(
(0 << 10) | /* No 3D Hotkeys */
(0 << 9) | /* Do not enumerate a dock */
(0 << 7) | /* Does not have DISPLAYSTATUS */
(0 << 5) | /* No LID support */
(0 << 4))) /* No Aux power state request */
}
Case (NBCI_FUNC_GETCALLBACKS)
{
Return (0)
}
Case (NBCI_FUNC_GETOBJBYTYPE)
{
CreateWordField (Arg1, 2, BFF0)
If (BFF0 == NBCI_OBJTYPE_DR)
{
Return (Buffer(0xa1)
{
/* DR ("Driver Object") is a data object which
* might vary depending on the eDP panel used. */
0x57, 0x74, 0xdc, 0x86, 0x75, 0x84, 0xec, 0xe7,
0x52, 0x44, 0xa1, 0x00, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00, 0xde, 0x10, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00,
0x00, 0x00, 0x01, 0x00, 0x47, 0x00, 0x00, 0x00,
0x02, 0x00, 0x45, 0x00, 0x00, 0x00, 0x03, 0x00,
0x51, 0x00, 0x00, 0x00, 0x04, 0x00, 0x4f, 0x00,
0x00, 0x00, 0x05, 0x00, 0x4d, 0x00, 0x00, 0x00,
0x06, 0x00, 0x4b, 0x00, 0x00, 0x00, 0x07, 0x00,
0x49, 0x00, 0x00, 0x00, 0x08, 0x00, 0x47, 0x00,
0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0xd9, 0x1c,
0x04, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x41, 0x5d, 0xc9, 0x00, 0x01, 0x24, 0x2e, 0x00,
0x02, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0xd9, 0x1c, 0x04, 0x00, 0x00,
0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x68, 0x9e,
0x35, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00
})
} Else {
Return (NV_ERROR_UNSPECIFIED)
}
}
}
Return (NV_ERROR_UNSUPPORTED)
}