diff options
| author | Edward O'Callaghan <quasisec@google.com> | 2020-06-24 09:45:49 +1000 |
|---|---|---|
| committer | Edward O'Callaghan <quasisec@chromium.org> | 2020-06-30 21:19:23 +0000 |
| commit | 811284125f0a553963de0e849b18cf60b66be5c4 (patch) | |
| tree | 813515c23e3478be91d602f73ae7f9f36cf50a10 /src/soc | |
| parent | f4a940c23613b988512f46acf45b4e0eb338e2c5 (diff) | |
soc/intel/cannonlake: Add UWES ASL into xhci.asl
Align support for enable wake-on-usb attach/detach as was
introduced in Skylake in
`commit 3bfe3404df32ca226c624be0435c640bf1ebeae7`.
This adds the USB Wake Enable Setup (UWES) ASL blocks
required to inform the OS about plug wake events bits
being set in the PORTSCN register configured by devicetree.
BUG=b:159187889
BRANCH=none
TEST=none
Change-Id: I6c63d226e5acadff04486c8a6764fb715a0ac051
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42737
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/cannonlake/acpi/xhci.asl | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/acpi/xhci.asl b/src/soc/intel/cannonlake/acpi/xhci.asl index d5187e6b78..7d89665dca 100644 --- a/src/soc/intel/cannonlake/acpi/xhci.asl +++ b/src/soc/intel/cannonlake/acpi/xhci.asl @@ -2,6 +2,65 @@ #include <soc/gpe.h> +#define PORTSCN_OFFSET 0x480 +#define PORTSCXUSB3_OFFSET 0x540 + +#define WAKE_ON_CONNECT_DISCONNECT_ENABLE 0x6000000 +#define RO_BITS_OFF_MASK ~0x80FE0012 + +/* + * USB Port Wake Enable (UPWE) on usb attach/detach + * Arg0 - Port Number + * Arg1 - Port 1 Status and control offset + * Arg2 - xHCI Memory-mapped address + */ +Method (UPWE, 3, Serialized) +{ + Local0 = Arg1 + ((Arg0 - 1) * 0x10) + + /* Map ((XMEM << 16) + Local0 in PSCR */ + OperationRegion (PSCR, SystemMemory, + Add (ShiftLeft (Arg2, 16), Local0), 0x10) + Field (PSCR, DWordAcc, NoLock, Preserve) + { + PSCT, 32, + } + Local0 = PSCT + /* + * And port status/control reg with RO and RWS bits + * RO bits: 0, 2:3, 10:13, 24, 28:30 + * RWS bits: 5:9, 14:16, 25:27 + */ + Local0 = Local0 & RO_BITS_OFF_MASK + /* Set WCE and WDE bits */ + Local0 = Local0 | WAKE_ON_CONNECT_DISCONNECT_ENABLE + PSCT = Local0 +} + +/* + * USB Wake Enable Setup (UWES) + * Arg0 - Port enable bitmap + * Arg1 - Port 1 Status and control offset + * Arg2 - xHCI Memory-mapped address + */ +Method (UWES, 3, Serialized) +{ + Local0 = Arg0 + + While (One) { + FindSetRightBit (Local0, Local1) + If (Local1 == Zero) { + Break + } + UPWE (Local1, Arg1, Arg2) + /* + * Clear the lowest set bit in Local0 since it was + * processed. + */ + Local0 = Local0 & (Local0 - 1) + } +} + /* XHCI Controller 0:14.0 */ Device (XHCI) @@ -10,10 +69,24 @@ Device (XHCI) Name (_PRW, Package () { GPE0_PME_B0, 3 }) + Method (_DSW, 3) + { + UWES ((\U2WE & 0xFFF), PORTSCN_OFFSET, XMEM) + UWES ((\U3WE & 0x3F ), PORTSCXUSB3_OFFSET, XMEM) + } + Name (_S3D, 3) /* D3 supported in S3 */ Name (_S0W, 3) /* D3 can wake device in S0 */ Name (_S3W, 3) /* D3 can wake system from S3 */ + OperationRegion (XPRT, PCI_Config, 0x00, 0x100) + Field (XPRT, AnyAcc, NoLock, Preserve) + { + Offset (0x10), + , 16, + XMEM, 16, /* MEM_BASE */ + } + Method (_PS0, 0, Serialized) { |