From patchwork Mon Oct 12 14:18:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lad Prabhakar X-Patchwork-Id: 11832837 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MIME_HEADER_CTYPE_ONLY,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, T_TVD_MIME_NO_HEADERS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E9EAC43457 for ; Mon, 12 Oct 2020 14:20:24 +0000 (UTC) Received: from web01.groups.io (web01.groups.io [66.175.222.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B576D2076E for ; Mon, 12 Oct 2020 14:20:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=lists.cip-project.org header.i=@lists.cip-project.org header.b="D3B6Pt+d" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B576D2076E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bp.renesas.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=bounce+64572+5522+4520388+8129055@lists.cip-project.org X-Received: by 127.0.0.2 with SMTP id SXYvYY4521723xjc1kuNEKJQ; Mon, 12 Oct 2020 07:20:23 -0700 X-Received: from relmlie6.idc.renesas.com (relmlie6.idc.renesas.com []) by mx.groups.io with SMTP id smtpd.web10.41774.1602512378241754205 for ; Mon, 12 Oct 2020 07:19:39 -0700 X-IronPort-AV: E=Sophos;i="5.77,366,1596466800"; d="scan'208";a="59351883" X-Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 12 Oct 2020 23:19:39 +0900 X-Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 1CD1942A7637; Mon, 12 Oct 2020 23:19:37 +0900 (JST) From: "Lad Prabhakar" To: cip-dev@lists.cip-project.org, Nobuhiro Iwamatsu , Pavel Machek Cc: Biju Das , Lad Prabhakar Subject: [cip-dev] [RFC PATCH 4.19.y-cip 02/50] PCI: dwc: Add ->get_features() callback function to dw_pcie_ep_ops Date: Mon, 12 Oct 2020 15:18:45 +0100 Message-Id: <20201012141933.9652-3-prabhakar.mahadev-lad.rj@bp.renesas.com> In-Reply-To: <20201012141933.9652-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20201012141933.9652-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: Bulk List-Unsubscribe: Sender: cip-dev@lists.cip-project.org List-Id: Mailing-List: list cip-dev@lists.cip-project.org; contact cip-dev+owner@lists.cip-project.org Reply-To: cip-dev@lists.cip-project.org X-Gm-Message-State: ZI4JN1I8wao5sOJg6PesFZMKx4520388AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.cip-project.org; q=dns/txt; s=20140610; t=1602512423; bh=IiiC1BYjZoNVeaVuF4B1gZ5i+FUjM1SMpH9AozWG1VA=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=D3B6Pt+d790HX2naBWbvKKKFOg+A8malIL/Ke2GrE/Xc54Ksy0He+C8TZD7rPsZ+4dw SWGOvrsaPNUZqEhT+GmJTyx4YW1G+6uxvM5ZVa2a2qvQHJ2MldOaHnsrse482EjRif927 dUOW1QdquGtljYcxazQFEfHi5jpflddyHf0= From: Kishon Vijay Abraham I commit fee35cb76a54c87985410ea6aa12002e5d38b367 upstream. Each platform using Designware PCIe core can support different set of endpoint features. Add a new callback function ->get_features() in dw_pcie_ep_ops so that each platform using Designware PCIe core can advertise its supported features to the endpoint function driver. Tested-by: Gustavo Pimentel Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Lorenzo Pieralisi Signed-off-by: Lad Prabhakar --- drivers/pci/controller/dwc/pcie-designware-ep.c | 12 ++++++++++++ drivers/pci/controller/dwc/pcie-designware.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index a3d07d9c598b..d1bb4b852b6c 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -355,6 +355,17 @@ static int dw_pcie_ep_start(struct pci_epc *epc) return pci->ops->start_link(pci); } +static const struct pci_epc_features* +dw_pcie_ep_get_features(struct pci_epc *epc, u8 func_no) +{ + struct dw_pcie_ep *ep = epc_get_drvdata(epc); + + if (!ep->ops->get_features) + return NULL; + + return ep->ops->get_features(ep); +} + static const struct pci_epc_ops epc_ops = { .write_header = dw_pcie_ep_write_header, .set_bar = dw_pcie_ep_set_bar, @@ -368,6 +379,7 @@ static const struct pci_epc_ops epc_ops = { .raise_irq = dw_pcie_ep_raise_irq, .start = dw_pcie_ep_start, .stop = dw_pcie_ep_stop, + .get_features = dw_pcie_ep_get_features, }; int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no) diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 14dcf6646699..90f978f2d1b0 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -181,6 +181,7 @@ struct dw_pcie_ep_ops { void (*ep_init)(struct dw_pcie_ep *ep); int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, enum pci_epc_irq_type type, u16 interrupt_num); + const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); }; struct dw_pcie_ep {