ec/google/wilco: Add UCSI support
This change adds support for the UCSI specification in order to provide information about the Type-C port and an interface to perform power and data role swap. This change is split across the DSDT and SSDT, with the shared memory and operation region declared in the SSDT after being allocated in CBMEM. The OS will fill in the registers in the system memory region and then call the _DSM method wtih a read or write argument. The DSM method will copy the required registers to/from the system memory and the EC and perform the write or read action. Responses from the EC will generate a new SCI with event code 0x79 which will notify this UCSI ACPI device and the OS driver will take action to read status from the EC. BUG=b:131083691 Change-Id: I438a2bdfaf6720acd8354e0339dcef2844b63a4e Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/32357 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
This commit is contained in:
Duncan Laurie
Duncan Laurie
parent
c1c60601ee
commit
c145e54f69
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@ -57,6 +57,9 @@ Device (EC0)
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If (\DPTE == One) {
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W (DWST, Arg1)
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}
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/* Initialize UCSI */
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^UCSI.INIT ()
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}
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/*
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@ -165,6 +168,7 @@ Device (EC0)
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#include "lid.asl"
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#include "platform.asl"
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#include "vbtn.asl"
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#include "ucsi.asl"
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#ifdef EC_ENABLE_DPTF
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#include "dptf.asl"
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#endif
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@ -143,3 +143,54 @@ Name (DWHY, Package () { 0x37, 0xff, WR }) /* DPTF: Write Hysteresis */
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Name (DWTQ, Package () { 0x38, 0xff, WR }) /* DPTF: Write Trip Query */
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Name (CSOS, Package () { 0xb8, 0xff, WR }) /* OS support for S0ix */
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Name (CSEX, Package () { 0xb9, 0xff, WR }) /* OS enter(1)/exit(0) S0ix */
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/*
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* EC UCSI
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*/
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Name (UVR0, Package () { 0x80, 0xff, RD }) /* UCSI Version */
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Name (UVR1, Package () { 0x81, 0xff, RD }) /* UCSI Version */
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Name (UCI0, Package () { 0x84, 0xff, RD }) /* UCSI Change Indicator */
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Name (UCI1, Package () { 0x85, 0xff, RD }) /* UCSI Change Indicator */
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Name (UCI2, Package () { 0x86, 0xff, RD }) /* UCSI Change Indicator */
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Name (UCI3, Package () { 0x87, 0xff, RD }) /* UCSI Change Indicator */
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Name (UCL0, Package () { 0x88, 0xff, WR }) /* UCSI Control */
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Name (UCL1, Package () { 0x89, 0xff, WR }) /* UCSI Control */
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Name (UCL2, Package () { 0x8a, 0xff, WR }) /* UCSI Control */
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Name (UCL3, Package () { 0x8b, 0xff, WR }) /* UCSI Control */
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Name (UCL4, Package () { 0x8c, 0xff, WR }) /* UCSI Control */
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Name (UCL5, Package () { 0x8d, 0xff, WR }) /* UCSI Control */
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Name (UCL6, Package () { 0x8e, 0xff, WR }) /* UCSI Control */
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Name (UCL7, Package () { 0x8f, 0xff, WR }) /* UCSI Control */
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Name (UMI0, Package () { 0x90, 0xff, RD }) /* UCSI Message In */
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Name (UMI1, Package () { 0x91, 0xff, RD }) /* UCSI Message In */
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Name (UMI2, Package () { 0x92, 0xff, RD }) /* UCSI Message In */
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Name (UMI3, Package () { 0x93, 0xff, RD }) /* UCSI Message In */
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Name (UMI4, Package () { 0x94, 0xff, RD }) /* UCSI Message In */
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Name (UMI5, Package () { 0x95, 0xff, RD }) /* UCSI Message In */
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Name (UMI6, Package () { 0x96, 0xff, RD }) /* UCSI Message In */
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Name (UMI7, Package () { 0x97, 0xff, RD }) /* UCSI Message In */
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Name (UMI8, Package () { 0x98, 0xff, RD }) /* UCSI Message In */
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Name (UMI9, Package () { 0x99, 0xff, RD }) /* UCSI Message In */
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Name (UMIA, Package () { 0x9a, 0xff, RD }) /* UCSI Message In */
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Name (UMIB, Package () { 0x9b, 0xff, RD }) /* UCSI Message In */
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Name (UMIC, Package () { 0x9c, 0xff, RD }) /* UCSI Message In */
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Name (UMID, Package () { 0x9d, 0xff, RD }) /* UCSI Message In */
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Name (UMIE, Package () { 0x9e, 0xff, RD }) /* UCSI Message In */
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Name (UMIF, Package () { 0x9f, 0xff, RD }) /* UCSI Message In */
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Name (UMO0, Package () { 0xa0, 0xff, WR }) /* UCSI Message Out */
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Name (UMO1, Package () { 0xa1, 0xff, WR }) /* UCSI Message Out */
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Name (UMO2, Package () { 0xa2, 0xff, WR }) /* UCSI Message Out */
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Name (UMO3, Package () { 0xa3, 0xff, WR }) /* UCSI Message Out */
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Name (UMO4, Package () { 0xa4, 0xff, WR }) /* UCSI Message Out */
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Name (UMO5, Package () { 0xa5, 0xff, WR }) /* UCSI Message Out */
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Name (UMO6, Package () { 0xa6, 0xff, WR }) /* UCSI Message Out */
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Name (UMO7, Package () { 0xa7, 0xff, WR }) /* UCSI Message Out */
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Name (UMO8, Package () { 0xa8, 0xff, WR }) /* UCSI Message Out */
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Name (UMO9, Package () { 0xa9, 0xff, WR }) /* UCSI Message Out */
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Name (UMOA, Package () { 0xaa, 0xff, WR }) /* UCSI Message Out */
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Name (UMOB, Package () { 0xab, 0xff, WR }) /* UCSI Message Out */
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Name (UMOC, Package () { 0xac, 0xff, WR }) /* UCSI Message Out */
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Name (UMOD, Package () { 0xad, 0xff, WR }) /* UCSI Message Out */
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Name (UMOE, Package () { 0xae, 0xff, WR }) /* UCSI Message Out */
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Name (UMOF, Package () { 0xaf, 0xff, WR }) /* UCSI Message Out */
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Name (UCTL, Package () { 0xb0, 0xff, WR }) /* UCSI Control Register */
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@ -145,3 +145,10 @@ Method (_Q66, 0, Serialized)
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ECQ4 (Local0)
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}
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}
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/* UCSI SCI uses a unique event code */
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Method (_Q79, 0, Serialized)
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{
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Printf ("EC _Q79 UCSI Event")
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Notify (^UCSI, 0x80)
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}
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@ -0,0 +1,157 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2019 Google LLC
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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Device (UCSI)
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{
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Name (_HID, "GOOG000E")
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Name (_CID, EisaId ("PNP0CA0"))
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Name (_DDN, "Wilco EC UCSI")
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Name (_UID, One)
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Name (_ADR, Zero)
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Name (_STA, 0xf)
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/* Value written to EC control register to start UCSI command */
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Name (UCMD, 0xE0)
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/* Shared memory fields are defined in the SSDT */
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External (VER0, FieldUnitObj)
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External (VER1, FieldUnitObj)
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External (CCI0, FieldUnitObj)
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External (CCI1, FieldUnitObj)
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External (CCI2, FieldUnitObj)
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External (CCI3, FieldUnitObj)
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External (CTL0, FieldUnitObj)
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External (CTL1, FieldUnitObj)
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External (CTL2, FieldUnitObj)
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External (CTL3, FieldUnitObj)
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External (CTL4, FieldUnitObj)
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External (CTL5, FieldUnitObj)
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External (CTL6, FieldUnitObj)
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External (CTL7, FieldUnitObj)
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External (MGI0, FieldUnitObj)
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External (MGI1, FieldUnitObj)
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External (MGI2, FieldUnitObj)
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External (MGI3, FieldUnitObj)
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External (MGI4, FieldUnitObj)
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External (MGI5, FieldUnitObj)
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External (MGI6, FieldUnitObj)
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External (MGI7, FieldUnitObj)
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External (MGI8, FieldUnitObj)
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External (MGI9, FieldUnitObj)
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External (MGIA, FieldUnitObj)
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External (MGIB, FieldUnitObj)
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External (MGIC, FieldUnitObj)
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External (MGID, FieldUnitObj)
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External (MGIE, FieldUnitObj)
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External (MGIF, FieldUnitObj)
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External (MGO0, FieldUnitObj)
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External (MGO1, FieldUnitObj)
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External (MGO2, FieldUnitObj)
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External (MGO3, FieldUnitObj)
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External (MGO4, FieldUnitObj)
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External (MGO5, FieldUnitObj)
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External (MGO6, FieldUnitObj)
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External (MGO7, FieldUnitObj)
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External (MGO8, FieldUnitObj)
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External (MGO9, FieldUnitObj)
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External (MGOA, FieldUnitObj)
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External (MGOB, FieldUnitObj)
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External (MGOC, FieldUnitObj)
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External (MGOD, FieldUnitObj)
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External (MGOE, FieldUnitObj)
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External (MGOF, FieldUnitObj)
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Method (INIT)
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{
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/* Read UCSI version from EC into shared memory */
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^VER0 = R (^^UVR0)
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^VER1 = R (^^UVR1)
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}
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Method (_DSM, 4, Serialized)
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{
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If (Arg0 != ToUUID ("6f8398c2-7ca4-11e4-ad36-631042b5008f")) {
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Return (Buffer (One) { Zero })
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}
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Switch (ToInteger (Arg2))
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{
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Case (Zero)
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{
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Return (Buffer (One) { 0x07 })
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}
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Case (One)
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{
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/* Write Message Out */
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W (^^UMO0, ^MGO0)
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W (^^UMO1, ^MGO1)
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W (^^UMO2, ^MGO2)
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W (^^UMO3, ^MGO3)
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W (^^UMO4, ^MGO4)
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W (^^UMO5, ^MGO5)
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W (^^UMO6, ^MGO6)
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W (^^UMO7, ^MGO7)
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W (^^UMO8, ^MGO8)
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W (^^UMO9, ^MGO9)
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W (^^UMOA, ^MGOA)
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W (^^UMOB, ^MGOB)
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W (^^UMOC, ^MGOC)
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W (^^UMOD, ^MGOD)
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W (^^UMOE, ^MGOE)
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W (^^UMOF, ^MGOF)
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/* Write Control */
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W (^^UCL0, ^CTL0)
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W (^^UCL1, ^CTL1)
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W (^^UCL2, ^CTL2)
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W (^^UCL3, ^CTL3)
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W (^^UCL4, ^CTL4)
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W (^^UCL5, ^CTL5)
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W (^^UCL6, ^CTL6)
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W (^^UCL7, ^CTL7)
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/* Start EC Command */
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W (^^UCTL, ^UCMD)
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}
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Case (2)
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{
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/* Read Message In */
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^MGI0 = R (^^UMI0)
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^MGI1 = R (^^UMI1)
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^MGI2 = R (^^UMI2)
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^MGI3 = R (^^UMI3)
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^MGI4 = R (^^UMI4)
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^MGI5 = R (^^UMI5)
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^MGI6 = R (^^UMI6)
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^MGI7 = R (^^UMI7)
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^MGI8 = R (^^UMI8)
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^MGI9 = R (^^UMI9)
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^MGIA = R (^^UMIA)
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^MGIB = R (^^UMIB)
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^MGIC = R (^^UMIC)
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^MGID = R (^^UMID)
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^MGIE = R (^^UMIE)
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^MGIF = R (^^UMIF)
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/* Read Status */
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^CCI0 = R (^^UCI0)
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^CCI1 = R (^^UCI1)
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^CCI2 = R (^^UCI2)
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^CCI3 = R (^^UCI3)
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}
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}
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Return (Buffer (One) { Zero })
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}
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}
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@ -14,7 +14,10 @@
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*/
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#include <arch/acpi.h>
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#include <arch/acpi_device.h>
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#include <arch/acpigen.h>
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#include <bootstate.h>
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#include <cbmem.h>
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#include <device/pnp.h>
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#include <ec/acpi/ec.h>
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#include <pc80/keyboard.h>
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@ -25,6 +28,64 @@
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#include "ec.h"
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#include "chip.h"
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/*
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* The UCSI fields are defined in the UCSI specification at
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* https://www.intel.com/content/www/us/en/io/universal-serial-bus/usb-type-c-ucsi-spec.html
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* https://www.intel.com/content/www/us/en/io/universal-serial-bus/bios-implementation-of-ucsi.html
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*/
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static struct fieldlist ucsi_region_fields[] = {
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FIELDLIST_NAMESTR("VER0", 8),
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FIELDLIST_NAMESTR("VER1", 8),
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FIELDLIST_NAMESTR("RSV0", 8),
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FIELDLIST_NAMESTR("RSV1", 8),
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FIELDLIST_NAMESTR("CCI0", 8),
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FIELDLIST_NAMESTR("CCI1", 8),
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FIELDLIST_NAMESTR("CCI2", 8),
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FIELDLIST_NAMESTR("CCI3", 8),
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FIELDLIST_NAMESTR("CTL0", 8),
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FIELDLIST_NAMESTR("CTL1", 8),
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FIELDLIST_NAMESTR("CTL2", 8),
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FIELDLIST_NAMESTR("CTL3", 8),
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FIELDLIST_NAMESTR("CTL4", 8),
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FIELDLIST_NAMESTR("CTL5", 8),
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FIELDLIST_NAMESTR("CTL6", 8),
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FIELDLIST_NAMESTR("CTL7", 8),
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FIELDLIST_NAMESTR("MGI0", 8),
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FIELDLIST_NAMESTR("MGI1", 8),
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FIELDLIST_NAMESTR("MGI2", 8),
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FIELDLIST_NAMESTR("MGI3", 8),
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FIELDLIST_NAMESTR("MGI4", 8),
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FIELDLIST_NAMESTR("MGI5", 8),
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FIELDLIST_NAMESTR("MGI6", 8),
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FIELDLIST_NAMESTR("MGI7", 8),
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FIELDLIST_NAMESTR("MGI8", 8),
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FIELDLIST_NAMESTR("MGI9", 8),
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FIELDLIST_NAMESTR("MGIA", 8),
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FIELDLIST_NAMESTR("MGIB", 8),
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FIELDLIST_NAMESTR("MGIC", 8),
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FIELDLIST_NAMESTR("MGID", 8),
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FIELDLIST_NAMESTR("MGIE", 8),
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FIELDLIST_NAMESTR("MGIF", 8),
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FIELDLIST_NAMESTR("MGO0", 8),
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FIELDLIST_NAMESTR("MGO1", 8),
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FIELDLIST_NAMESTR("MGO2", 8),
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FIELDLIST_NAMESTR("MGO3", 8),
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FIELDLIST_NAMESTR("MGO4", 8),
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FIELDLIST_NAMESTR("MGO5", 8),
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FIELDLIST_NAMESTR("MGO6", 8),
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FIELDLIST_NAMESTR("MGO7", 8),
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FIELDLIST_NAMESTR("MGO8", 8),
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FIELDLIST_NAMESTR("MGO9", 8),
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FIELDLIST_NAMESTR("MGOA", 8),
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FIELDLIST_NAMESTR("MGOB", 8),
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FIELDLIST_NAMESTR("MGOC", 8),
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FIELDLIST_NAMESTR("MGOD", 8),
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FIELDLIST_NAMESTR("MGOE", 8),
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FIELDLIST_NAMESTR("MGOF", 8),
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};
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static const size_t ucsi_region_len = ARRAY_SIZE(ucsi_region_fields);
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static void wilco_ec_post_complete(void *unused)
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{
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wilco_ec_send(KB_BIOS_PROGRESS, BIOS_PROGRESS_POST_COMPLETE);
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@ -111,11 +172,47 @@ static void wilco_ec_read_resources(struct device *dev)
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wilco_ec_resource(dev, 2, CONFIG_EC_BASE_PACKET, 16);
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}
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static void wilco_ec_fill_ssdt_generator(struct device *dev)
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{
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struct opregion opreg;
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void *region_ptr;
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if (!dev->enabled)
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return;
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region_ptr = cbmem_add(CBMEM_ID_ACPI_UCSI, ucsi_region_len);
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if (!region_ptr)
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return;
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memset(region_ptr, 0, ucsi_region_len);
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opreg.name = "UCSM";
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opreg.regionspace = SYSTEMMEMORY;
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opreg.regionoffset = (uintptr_t)region_ptr;
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opreg.regionlen = ucsi_region_len;
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acpigen_write_scope(acpi_device_path_join(dev, "UCSI"));
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acpigen_write_name("_CRS");
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acpigen_write_resourcetemplate_header();
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acpigen_write_mem32fixed(1, (uintptr_t)region_ptr, ucsi_region_len);
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acpigen_write_resourcetemplate_footer();
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acpigen_write_opregion(&opreg);
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acpigen_write_field(opreg.name, ucsi_region_fields, ucsi_region_len,
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FIELD_ANYACC | FIELD_LOCK | FIELD_PRESERVE);
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acpigen_pop_len(); /* Scope */
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}
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static const char *wilco_ec_acpi_name(const struct device *dev)
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{
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return "EC0";
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}
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static struct device_operations ops = {
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.init = wilco_ec_init,
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.read_resources = wilco_ec_read_resources,
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.enable_resources = DEVICE_NOOP,
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.set_resources = DEVICE_NOOP,
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.init = wilco_ec_init,
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.read_resources = wilco_ec_read_resources,
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.enable_resources = DEVICE_NOOP,
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.set_resources = DEVICE_NOOP,
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.acpi_fill_ssdt_generator = wilco_ec_fill_ssdt_generator,
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.acpi_name = wilco_ec_acpi_name,
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};
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static struct pnp_info info[] = {
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