From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 81D383803DC; Sat, 17 Oct 2026 17:09:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792256989; cv=none; b=WP7YsfgLTHSytTPBvG1VGFXO9KTqy/vE8s801C4A3FgVV29Z+19j326nn7L5SfXb008AaFtC9noJDzuiOmUtxx5pR+rKULhCdZ0G3kgF/xMga3eeBtD+ajBLtAKC5NcLDf+rHrn98ciW9cuT4SNhnPyHz5eoAFMmy6xnoP780SA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1792256989; c=relaxed/simple; bh=JjJqtERFn3MzI6lT+GPe6Cip2hoWoMplg4XAfEOp2bM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ItpC5k2JSy5wVbEoW+/t685FNNBlIS5ZqmYRFrui1p3CgCviAfwHrIW1PZRdO6o8ZZoHLuRhuFpdwJqz9DJcFbQezgaszuDyDDdTMM3G2h/pbCRYS/EeaGXaaaarce3svaEZegSN5d05KiW91Bf+xa4OKNUAs69JTlrlt1wUCmg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=TOcm6Amn; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="TOcm6Amn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFC631F000C4; Sat, 17 Oct 2026 17:09:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792256988; bh=XYBR1ZMPS7hj9cu1p5ib2b1gEvkR6iHf1l241ZRw2n4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=TOcm6AmnyDJcukC2ODetikTNOsQKUuddxpgtFj5MeSCUDxYz/RC8/kuh1u1g4U9PJ HPhSdFVq1Sx4bBYcXr4/vxOFLRpuhhtQJAv6vAPr3Y0MDL/uel/gxZcLOjglRbiNfu C1MzULwI/bX0oxqrxrfqoTQOeJzzTSVHgop52FUg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Frederick Morlock , Andre Eikmeyer , Alex Deucher , Sasha Levin Subject: [PATCH 6.6 0389/1674] drm/amdgpu: reset VI ASIC on MacBookPro15,1 Date: Sat, 17 Oct 2026 17:44:21 +0200 Message-ID: <20261017160441.093847907@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261017160431.119607952@linuxfoundation.org> References: <20261017160431.119607952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andre Eikmeyer [ Upstream commit a5be7ad8f5f0e067613e9197638f216f46252946 ] After S3, reloading amdgpu on MacBookPro15,1 systems with a Radeon Pro 555X or 560X fails while loading the SMU firmware. The existing SMC register check does not request a reset because the registers do not reliably reflect the stale SMU state on these machines. Frederick Morlock found that forcing a VI ASIC reset allows the driver to initialize again. This patch limits his workaround to the exact PCI device, Apple subsystem device and revision combinations used by these two GPUs, leaving other VI hardware unchanged. Suggested-by: Frederick Morlock Signed-off-by: Andre Eikmeyer Signed-off-by: Alex Deucher Stable-dep-of: a22e5e4f2ebb ("drm/amdgpu: reset VI ASIC on MacBookPro14,3") Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/vi.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 3683a5d9348bf..162077d3bf765 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -1409,10 +1409,30 @@ static uint64_t vi_get_pcie_replay_count(struct amdgpu_device *adev) return (nak_r + nak_g); } +struct vi_reset_quirk { + u16 device; + u16 subsystem_vendor; + u16 subsystem_device; + u8 revision; +}; + +static const struct vi_reset_quirk vi_reset_quirks[] = { + { 0x67ef, PCI_VENDOR_ID_APPLE, 0x0190, 0xe3 }, /* Radeon Pro 555X */ + { 0x67ef, PCI_VENDOR_ID_APPLE, 0x018f, 0xc2 }, /* Radeon Pro 560X */ +}; + static bool vi_need_reset_on_init(struct amdgpu_device *adev) { + unsigned int i; u32 clock_cntl, pc; + for (i = 0; i < ARRAY_SIZE(vi_reset_quirks); i++) + if (adev->pdev->device == vi_reset_quirks[i].device && + adev->pdev->subsystem_vendor == vi_reset_quirks[i].subsystem_vendor && + adev->pdev->subsystem_device == vi_reset_quirks[i].subsystem_device && + adev->pdev->revision == vi_reset_quirks[i].revision) + return true; + if (adev->flags & AMD_IS_APU) return false; -- 2.53.0