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mapi id 15.20.6387.019; Thu, 11 May 2023 08:10:43 +0000 From: "Minh Nguyen via groups.io" To: devel@edk2.groups.io CC: patches@amperecomputing.com, quic_llindhol@quicinc.com, ardb+tianocore@kernel.org, nhi@os.amperecomputing.com, tinhnguyen@os.amperecomputing.com, Minh Nguyen Subject: [edk2-devel] [edk2-platforms][PATCH 2/6] AmpereAltraPkg: Add Hot Plug Slot Capable during PCIe port initialization Date: Thu, 11 May 2023 15:10:07 +0700 Message-ID: <20230511081011.2692963-3-minhnguyen1@os.amperecomputing.com> In-Reply-To: <20230511081011.2692963-1-minhnguyen1@os.amperecomputing.com> References: <20230511081011.2692963-1-minhnguyen1@os.amperecomputing.com> X-ClientProxiedBy: SI2P153CA0033.APCP153.PROD.OUTLOOK.COM (2603:1096:4:190::21) To PH0PR01MB8048.prod.exchangelabs.com (2603:10b6:510:280::7) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR01MB8048:EE_|CY4PR0101MB3144:EE_ X-MS-Office365-Filtering-Correlation-Id: 3843cc0b-c27f-4345-6205-08db51f73743 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os.amperecomputing.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3843cc0b-c27f-4345-6205-08db51f73743 X-MS-Exchange-CrossTenant-AuthSource: PH0PR01MB8048.prod.exchangelabs.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 May 2023 08:10:43.3045 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3bc2b170-fd94-476d-b0ce-4229bdc904a7 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9Q6TLozgJIebFr3K+51EfnE4n7B/O5kMY83Q0D/cYvm5uJ/CvO+5etJwzDrjZGm3AUJiyAm5d6I3J+q8NIXOfF8mCMDIbENBH7oRV4ap+4QO9WfAryc96hB2j5W4LVRQ X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR0101MB3144 Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,minhnguyen1@os.amperecomputing.com X-Gm-Message-State: tZR3u3Hw74djTjHncnbKPVNSx1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1683823634; bh=V7LTfbZfTZTF6gg7VHfc7hcHUzxYvdmuaxpBYMrQqlY=; h=CC:Content-Type:Date:From:Reply-To:Subject:To; b=t6skdGC/REJ8CVN9C/L8dvnhTTpPcB6aM+Cjm1gNyGGMm+k+VHgsfoWeX5jCr+o1B6e tuUy23iimUrrvMlVYzCiMNfU41gXAfJzIDqQxsPB/xt6Ppot+HiYJGYrQdTLfOAUEk/fD RHY73aZk/wSIWgtRQUPEK81IXIpXJxcdnYk= X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1683823635603100004 Content-Type: text/plain; charset="utf-8" In order to detect the NVMe after OS boots successfully but that NVMe's not present previously. Hot Plug Slot Capable will help PCI Linux driver to initialize its slot iomem resource which is used for detecting the disk when it's inserted. Signed-off-by: Minh Nguyen --- Silicon/Ampere/AmpereAltraPkg/Library/Ac01PcieLib/PcieCore.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Silicon/Ampere/AmpereAltraPkg/Library/Ac01PcieLib/PcieCore.c b= /Silicon/Ampere/AmpereAltraPkg/Library/Ac01PcieLib/PcieCore.c index f7c8defc1906..c5a299cca6c5 100644 --- a/Silicon/Ampere/AmpereAltraPkg/Library/Ac01PcieLib/PcieCore.c +++ b/Silicon/Ampere/AmpereAltraPkg/Library/Ac01PcieLib/PcieCore.c @@ -1093,6 +1093,11 @@ Ac01PcieCoreSetupRC ( // Program the power limit TargetAddress =3D CfgBase + PCIE_CAPABILITY_BASE + SLOT_CAPABILITIES_R= EG; Val =3D MmioRead32 (TargetAddress); + // In order to detect the NVMe after OS boots successfully but + // that NVMe's not present previously. Hot Plug Slot Capable + // will help PCI Linux driver to initialize its slot iomem resource + // which is used for detecting the disk when it's inserted. + Val =3D SLOT_HPC_SET(Val, 1); Val =3D SLOT_CAP_SLOT_POWER_LIMIT_VALUE_SET (Val, SLOT_POWER_LIMIT_75W= ); MmioWrite32 (TargetAddress, Val); =20 --=20 2.39.0 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#104716): https://edk2.groups.io/g/devel/message/104716 Mute This Topic: https://groups.io/mt/98831768/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-