From patchwork Mon Aug 3 21:00:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rob Herring \(Arm\)" X-Patchwork-Id: 247404 Delivered-To: patch@linaro.org Received: by 2002:a92:cc90:0:0:0:0:0 with SMTP id x16csp1539509ilo; Mon, 3 Aug 2020 14:01:43 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz5hVKUb1dcjx+JkImuId7Lc3Urb4VUhTxMENdjfU+NgxnM4nAbyL0wqBUR5wA71xch4zZn X-Received: by 2002:aa7:d047:: with SMTP id n7mr18164181edo.78.1596488503603; Mon, 03 Aug 2020 14:01:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1596488503; cv=none; d=google.com; s=arc-20160816; b=ORCKbzrW9/qktgDFkYMo3Hmns0EGQVcfP90qClLkIlg/GA2mWmwR9kBj8WAvnzDLxX ruz44LbZFj6T3OTVmEVNRbQz64G6EmPQAVlwS10APziw2GZdHvlJrDfXvh3iBbUFlc5o 9fm6dL5n/fSL6jH4swvVsXyAF6I4XfSPbPwP9KArSP9rbyvVa6/xCvWzZmVc3+SOaadC VQ5CjiyM8jLaqCOjXzugkdXw+y0OY6NSUqhoGC+x2IeepF9RZrbuaZqh+TId3jWgkSqo Y6iAqepCoWXvAoJNHsd2PQSTHz5cE/63X9sgguQzquM4zshxE4AlHGPMq9wC3Hhb14rR 6Ehg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=uqMmmSdRu2mAJmxJVyfdC1UZDoCNddnAHqJmdw3g1qc=; b=SutVnk4SFxPys7bbh7t0ChOMNBR8rNRDs0pSOpx50RWehh59gfHwsQ5/vWMv3fzu7b 7gT3rkiOsg7mNHDtBksI4dfoSkUFCrinKQQ3tsANUNa7oIndvR+kG7Y/rMcqM7wLGko5 9rb/VR9uf0urlw+2pO4Qio3napuxSIKJ/CDYRKo7SYXeTDj27t/Pkf18VqnTt3s5a7e1 ZpYcn8SQePPftPog+Nf5kpTdGdEl9cXogekcP99ngc7dihRW4flYuobw1lN5Y/g0AE/T PzSLZxpRsxaXVmErX/xPCIxtbMvyexMKZG8XQ6RyOF9W/AfiotsvSQni5Vi+aExfghwU nRNQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-samsung-soc-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id lk20si8340152ejb.703.2020.08.03.14.01.43; Mon, 03 Aug 2020 14:01:43 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-samsung-soc-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-samsung-soc-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729377AbgHCVBl (ORCPT + 4 others); Mon, 3 Aug 2020 17:01:41 -0400 Received: from mail-io1-f65.google.com ([209.85.166.65]:38453 "EHLO mail-io1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729372AbgHCVBk (ORCPT ); Mon, 3 Aug 2020 17:01:40 -0400 Received: by mail-io1-f65.google.com with SMTP id l1so39992207ioh.5; Mon, 03 Aug 2020 14:01:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=uqMmmSdRu2mAJmxJVyfdC1UZDoCNddnAHqJmdw3g1qc=; b=kbh/gROR243Odr5WjQNkYijTi8E5dG08IEnI96YhEKNcfAGLtuYLyJD1JIRTiIuD0C CfFzzGHJYBQxl7NtxACRGHxHO0sOfZwFL167qVqyRcbBrSFw9zEOWgHb7TxkkWSyWk5G b8K7uRWRjjoyk2uZpkzEJUtnNr3MX7nuIplrbGhqz6mUJLZYc7DQ7XtZM68w9SrFezSr hbP5INOFlox0Rl4cvwNaBQZY0vZs177aSvGv0RKb4rHjYNNvz7CS1LZEFL1kafsRIJYK SmUUfCjyDTmSG6752X7d0p2IJnkLPj3LjBXD4mud6wmTi5yj+x/77dbQ/mTXnk8qGTc5 O9sg== X-Gm-Message-State: AOAM531wschz0usaKytMHCOCSv7M8xmzDRoMrxgVay8bT4/i59DHRriV u4TH1w3/rP2v4lnXeqcu1g== X-Received: by 2002:a5e:930b:: with SMTP id k11mr1852419iom.30.1596488499811; Mon, 03 Aug 2020 14:01:39 -0700 (PDT) Received: from xps15.herring.priv ([64.188.179.252]) by smtp.googlemail.com with ESMTPSA id r6sm9292280iod.7.2020.08.03.14.01.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Aug 2020 14:01:39 -0700 (PDT) From: Rob Herring To: Bjorn Helgaas , Gustavo Pimentel , Jingoo Han , Lorenzo Pieralisi Cc: Binghui Wang , Bjorn Andersson , Fabio Estevam , Jesper Nilsson , Jonathan Chocron , Jonathan Hunter , Kevin Hilman , Kishon Vijay Abraham I , Krzysztof Kozlowski , Kukjin Kim , Kunihiko Hayashi , linux-amlogic@lists.infradead.org, linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-omap@vger.kernel.org, linux-pci@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org, Lucas Stach , Masahiro Yamada , Murali Karicheri , NXP Linux Team , Pengutronix Kernel Team , Pratyush Anand , Richard Zhu , Sascha Hauer , Shawn Guo , Stanimir Varbanov , Thierry Reding , Xiaowei Song , Yue Wang Subject: [RFC 09/27] PCI: dwc: kirin: Use pci_ops for root config space accessors Date: Mon, 3 Aug 2020 15:00:58 -0600 Message-Id: <20200803210116.3132633-10-robh@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200803210116.3132633-1-robh@kernel.org> References: <20200803210116.3132633-1-robh@kernel.org> MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Now that DWC drivers can setup their own pci_ops for the root and child buses, convert the HiSilicon Kirin driver to use the standard pci_ops for root bus config accesses. Cc: Xiaowei Song Cc: Binghui Wang Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Signed-off-by: Rob Herring --- drivers/pci/controller/dwc/pcie-kirin.c | 39 +++++++++++++------------ 1 file changed, 21 insertions(+), 18 deletions(-) -- 2.25.1 diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c index c19617a912bd..1680dc72b416 100644 --- a/drivers/pci/controller/dwc/pcie-kirin.c +++ b/drivers/pci/controller/dwc/pcie-kirin.c @@ -335,34 +335,37 @@ static void kirin_pcie_sideband_dbi_r_mode(struct kirin_pcie *kirin_pcie, kirin_apb_ctrl_writel(kirin_pcie, val, SOC_PCIECTRL_CTRL1_ADDR); } -static int kirin_pcie_rd_own_conf(struct pcie_port *pp, +static int kirin_pcie_rd_own_conf(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val) { - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct kirin_pcie *kirin_pcie = to_kirin_pcie(pci); - int ret; + struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata); - kirin_pcie_sideband_dbi_r_mode(kirin_pcie, true); - ret = dw_pcie_read(pci->dbi_base + where, size, val); - kirin_pcie_sideband_dbi_r_mode(kirin_pcie, false); + if (PCI_SLOT(devfn)) { + *val = ~0; + return PCIBIOS_DEVICE_NOT_FOUND; + } - return ret; + *val = dw_pcie_read_dbi(pci, where, size); + return PCIBIOS_SUCCESSFUL; } -static int kirin_pcie_wr_own_conf(struct pcie_port *pp, +static int kirin_pcie_wr_own_conf(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) { - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct kirin_pcie *kirin_pcie = to_kirin_pcie(pci); - int ret; + struct dw_pcie *pci = to_dw_pcie_from_pp(bus->sysdata); - kirin_pcie_sideband_dbi_w_mode(kirin_pcie, true); - ret = dw_pcie_write(pci->dbi_base + where, size, val); - kirin_pcie_sideband_dbi_w_mode(kirin_pcie, false); + if (PCI_SLOT(devfn)) + return PCIBIOS_DEVICE_NOT_FOUND; - return ret; + dw_pcie_write_dbi(pci, where, size, val); + return PCIBIOS_SUCCESSFUL; } +static struct pci_ops kirin_pci_ops = { + .read = kirin_pcie_rd_own_conf, + .write = kirin_pcie_wr_own_conf, +}; + static u32 kirin_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, size_t size) { @@ -428,6 +431,8 @@ static int kirin_pcie_establish_link(struct pcie_port *pp) static int kirin_pcie_host_init(struct pcie_port *pp) { + pp->bridge->ops = &kirin_pci_ops; + kirin_pcie_establish_link(pp); if (IS_ENABLED(CONFIG_PCI_MSI)) @@ -443,8 +448,6 @@ static const struct dw_pcie_ops kirin_dw_pcie_ops = { }; static const struct dw_pcie_host_ops kirin_pcie_host_ops = { - .rd_own_conf = kirin_pcie_rd_own_conf, - .wr_own_conf = kirin_pcie_wr_own_conf, .host_init = kirin_pcie_host_init, };