From nobody Tue Aug 18 01:31:45 2026 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4hPBxs6wMqz6phh5 for ; Tue, 18 Aug 2026 01:31:45 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "YR2" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4hPBxs56zTz4KXZ for ; Tue, 18 Aug 2026 01:31:45 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1787016705; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=tCGKMfBTX/S34z/5ZLi3O/oXR2JDD5Ye5F49M752y9Y=; b=Wimr4UfoCLeIuxvOXVdA2FXe544LtjwCqO/pfo0aj6LOjBy1UD7ulKcPMiPRsQxY0sOaaR bA2v7wNZns6uZk2qeeZmfqW060vyOaQEexMT8VLwqtQ9YWfNGltC5SLch1aAgXpzo5M6Ej YhfMBmawPNS0MNCh7VL8fNtdsXz6yg3xy+oR/E2pj7teIg0odRikb3nyxi0jpfsdyMh8nN jRmYDFBYhcBe4aCzg8mflwLv6y607AqEyuZTakoEzuHcRB7G8fjW5OiV5oE6oCLoft38ex ymVnuoxdBlERhfoRvQR9bQ7AZfd7RzLLNDUKDFHkXRpgwW6EFVxT2dDpyxwx+w== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1787016705; a=rsa-sha256; cv=none; b=Y1Qm0beyqFeNh4+0Grfg9YsBm2zb1SF02bf+m717uX1SEpToIkLwkAI8P/q/uPsPnPrugh +HQ62taHotcFzxgCSAjJUzw6eF5qEvD5qDoZ12SeI/SssasmDAdiF5XSVMJkgcgllseX0y bIVtM/t7AD3VEuBYLU0k7CHwW7+eFXeYnCkWBptQSfsik+WA9OEoTw5eq4+2Iyx24snnh0 21+WWFhnNdPLGh4m3LRx/pKgdC/pttIVichZECp6HjGV+cdmLVnMEXE5LM5r/MdwYsqS0h SdODrBLSiHNutz5L441wlLmz7pH+TGEjFjM+7coQaKHI4eidu/UZKInWS0LcNg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1787016705; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=tCGKMfBTX/S34z/5ZLi3O/oXR2JDD5Ye5F49M752y9Y=; b=cSGxBru4yBnF/vwUJs1XT4BD46dYAMDovd3bKl040+RgQppMz8El2fNDOThXBVAw3n0AfW xq1jFdtBs+s/7pKXPpzBrl2yN+x89dOEz2PLDOx3C/7rKhYZKSjni54lLclViarhxXIniY FB+QZdmxZmlKFpfi3DJVsTlrJNnt5YboE6sl7T14+/p6FhS5goxx68X77cz6ya2I7H8iOz KIKZ7/eYrzfjMHTmOk3svs0SKBBW7e8ikNsTo/Yc6Dqs8VyBS+KcB1gy6MgZH6TU+utAQt i1xPAITboyV8nEqUUwefINeuRIT3+iOeBX1e2hvDGr36DjOkXptWd6inmp3DQw== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) by mxrelay.nyi.freebsd.org (Postfix) with ESMTP id 4hPBxs3SGRz7l8 for ; Tue, 18 Aug 2026 01:31:45 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from git (uid 1279) (envelope-from git@FreeBSD.org) id 1919f by gitrepo.freebsd.org (DragonFly Mail Agent v0.13+ on gitrepo.freebsd.org); Tue, 18 Aug 2026 01:31:45 +0000 To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kevin Bowling Subject: git: 7ee086b95dce - stable/14 - e1000: Disable autonomous PCH power gating after reset List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kbowling X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 7ee086b95dce6913b8b76f887ed6deb337c401ae Auto-Submitted: auto-generated Date: Tue, 18 Aug 2026 01:31:45 +0000 Message-Id: <6a83b601.1919f.1419590f@gitrepo.freebsd.org> The branch stable/14 has been updated by kbowling: URL: https://cgit.FreeBSD.org/src/commit/?id=7ee086b95dce6913b8b76f887ed6deb337c401ae commit 7ee086b95dce6913b8b76f887ed6deb337c401ae Author: Kevin Bowling AuthorDate: 2026-08-11 15:23:51 +0000 Commit: Kevin Bowling CommitDate: 2026-08-18 01:31:29 +0000 e1000: Disable autonomous PCH power gating after reset Panther Point changed the reset value of CTRL_EXT.DPG_EN to enable autonomous power gating. Clear it after hardware reset on Panther Point and Nova Point controllers to prevent unexpected Tx/Rx hangs, packet loss, or corruption. (cherry picked from commit 0979b0430c2d728e595841ecba30b63972794fe9) --- sys/dev/e1000/e1000_defines.h | 1 + sys/dev/e1000/e1000_ich8lan.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/sys/dev/e1000/e1000_defines.h b/sys/dev/e1000/e1000_defines.h index f1b1008764a1..9b8aca173856 100644 --- a/sys/dev/e1000/e1000_defines.h +++ b/sys/dev/e1000/e1000_defines.h @@ -66,6 +66,7 @@ /* Extended Device Control */ #define E1000_CTRL_EXT_LPCD 0x00000004 /* LCD Power Cycle Done */ +#define E1000_CTRL_EXT_DPG_EN 0x00000008 /* Dynamic Power Gating */ #define E1000_CTRL_EXT_SDP4_DATA 0x00000010 /* SW Definable Pin 4 data */ #define E1000_CTRL_EXT_SDP6_DATA 0x00000040 /* SW Definable Pin 6 data */ #define E1000_CTRL_EXT_SDP3_DATA 0x00000080 /* SW Definable Pin 3 data */ diff --git a/sys/dev/e1000/e1000_ich8lan.c b/sys/dev/e1000/e1000_ich8lan.c index 3102505faa15..f1a5fe59bb81 100644 --- a/sys/dev/e1000/e1000_ich8lan.c +++ b/sys/dev/e1000/e1000_ich8lan.c @@ -5094,6 +5094,14 @@ static s32 e1000_reset_hw_ich8lan(struct e1000_hw *hw) reg |= E1000_KABGTXD_BGSQLBIAS; E1000_WRITE_REG(hw, E1000_KABGTXD, reg); + /* Prevent autonomous power gating after the hardware reset. */ + if (hw->mac.type >= e1000_pch_ptp && + hw->mac.type < e1000_82575) { + reg = E1000_READ_REG(hw, E1000_CTRL_EXT); + reg &= ~E1000_CTRL_EXT_DPG_EN; + E1000_WRITE_REG(hw, E1000_CTRL_EXT, reg); + } + return E1000_SUCCESS; }