From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 441471774B; Thu, 18 Jan 2024 10:58:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705575480; cv=none; b=srNyGrxWuiZVTLWyV1L8k/4ynRx8S15VdR6o9B3XbkpAlcR5tx7RVsa8rYenJNwzxjDuvh3MRO5VRGOyBxfA0W4UZcLJNVDPZptcQ5B+15GC5y2ABjHMvjvf761oK2op19J2Nvsq7KRQ4DqFjAFGINJf4K/u5JCdVPjn92BQtKw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705575480; c=relaxed/simple; bh=kIjz0m31cKKsfh0JDjBydTYgZJ/oJfvIADNqRL/VPD4=; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID: X-Mailer:In-Reply-To:References:User-Agent:X-stable: X-Patchwork-Hint:MIME-Version:Content-Transfer-Encoding; b=qCYOTxb4c+/vrFO5ZwrVdv8mV9BVOZvie37VAkJSUhNNdYHICKe6jxw3kXMibDMHqlmk3kZn3lKglIHxxRXiNXWFtLa6ON35ngnxHGD0PVfgej77vgmLTwMMiCYsuSS0Kn9rtx20EpBUEjzmfUpBtoL1N3cGaQTDXqQRboveDno= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vvE2Ra21; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vvE2Ra21" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BD227C433C7; Thu, 18 Jan 2024 10:57:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1705575480; bh=kIjz0m31cKKsfh0JDjBydTYgZJ/oJfvIADNqRL/VPD4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vvE2Ra213njVJNXs2NeDDNUlIMk68KlgAN6y+q6pr07EdgBU2eiaIkB4pFzoszRsJ VMZu6GD0Wah/X7IoxycrOrhDiUg/UzzJbOWdQWS3PE5H/GFJozvxJSGy4y2Xa2THt/ LFhNu+Ya15Y9RM34c0fNEkIIzWFbdh5uDwtFJQV8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, LeoLiuoc , Bjorn Helgaas Subject: [PATCH 6.6 147/150] PCI: Add ACS quirk for more Zhaoxin Root Ports Date: Thu, 18 Jan 2024 11:49:29 +0100 Message-ID: <20240118104326.861351986@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240118104320.029537060@linuxfoundation.org> References: <20240118104320.029537060@linuxfoundation.org> User-Agent: quilt/0.67 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: LeoLiuoc commit e367e3c765f5477b2e79da0f1399aed49e2d1e37 upstream. Add more Root Port Device IDs to pci_quirk_zhaoxin_pcie_ports_acs() for some new Zhaoxin platforms. Fixes: 299bd044a6f3 ("PCI: Add ACS quirk for Zhaoxin Root/Downstream Ports") Link: https://lore.kernel.org/r/20231211091543.735903-1-LeoLiu-oc@zhaoxin.com Signed-off-by: LeoLiuoc [bhelgaas: update subject, drop changelog, add Fixes, add stable tag, fix whitespace, wrap code comment] Signed-off-by: Bjorn Helgaas Cc: # 5.7 Signed-off-by: Greg Kroah-Hartman --- drivers/pci/quirks.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4699,17 +4699,21 @@ static int pci_quirk_xgene_acs(struct pc * But the implementation could block peer-to-peer transactions between them * and provide ACS-like functionality. */ -static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) +static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) { if (!pci_is_pcie(dev) || ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) && (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM))) return -ENOTTY; + /* + * Future Zhaoxin Root Ports and Switch Downstream Ports will + * implement ACS capability in accordance with the PCIe Spec. + */ switch (dev->device) { case 0x0710 ... 0x071e: case 0x0721: - case 0x0723 ... 0x0732: + case 0x0723 ... 0x0752: return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); }