From patchwork Wed Mar 27 09:13:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 13606008 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1E56BCD1283 for ; Wed, 27 Mar 2024 09:14:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=XzmueWMMcesvrROHdoM8at0wkj3Aohtfpus5rHtPlFo=; b=45HLLvx1tQDW0Y 6wChPzVWc03HfSfP1aqKDF+5dgrKv2nSLV94QZx8piRkhSd2lNYny94uUD5XgABBPAgurrvROF43I GTRon32zABMrUzYN6BbQmzqegO6lbGp2P9EYcIZtwtx5IVKW2Dc0nfX5mP3YG8C1bXqIxuNheV3s3 X1ClTw1+sLsFFq7ohuzc4CkSvuhiGf64GRMHUoto8rU7TGPxaMlAVEbRSB+3ejMBpRY3jEuWw9+Y8 ww4j3KUXZQyL8dQcLpoIG/d//HIrME0NqrmDCRjsP6LEi4/GW89NvJqJFtvgXDiKO0A3D/vaDtOY1 sgUb5apuwMg36CNEKvOg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpPMs-00000008B79-0dQ3; Wed, 27 Mar 2024 09:14:46 +0000 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rpPMd-00000008Ayg-0Ntz for linux-rockchip@lists.infradead.org; Wed, 27 Mar 2024 09:14:32 +0000 Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-6e740fff1d8so4681642b3a.1 for ; Wed, 27 Mar 2024 02:14:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1711530870; x=1712135670; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=zPk9OMXL2EDAJPzRk28eQ8ffeZSU9ou0GuU/yWTRHW0=; b=mrGDitgvajj0YmWXhpPMDqYZStgbnwCr/Eyt6tSjnWs7R+3nZkyZOYe42AJ1X2OlGU EZF5v33Y0npEFgxb5iA0Geu2mMzrMzykfWCJOXUWOuCI5ZJn+p0wojbC3BTEgFCeytxt NcjDSziNIjz8Qv5syZJUleaZrk1X9mLhxvf4S4a8MQAIj+xkn++6TSo+FJPR4jjCNNHk V/VCqV2LD/YNPF5zwjADVdX6FpzZKo1UMIC4SJtJn/1mamNcGmPtLWsp0X5mmKYzJrtj ZJYJTWuQehGbacxnR36G6wTVGCkurxQkA815da6VUmSGJMCYU/1k+OPCVOKyLvq0L0DP TA/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711530870; x=1712135670; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=zPk9OMXL2EDAJPzRk28eQ8ffeZSU9ou0GuU/yWTRHW0=; b=CLKd5S5FXvCQlbdfjZSAkO6YHCAgl9r8HCqKGqpATKE1YmUiWdpdSam5xLjPA0rM1K SN/1L5Hk0fogvHO4C41116/1zyYLQ3XtOrDup28Qtm/HcTFBBkf+1qRqDwPnvVfDVJWJ GlyfF32isJ1yLCZafz8XGMyGfcD04JQtZ2orLI65mUXXt/YcItIs+jJJ/x+HnhV2My2/ JbKROFWQ3LeYzgIKVJ6tnZpnaUiKqFDPeypxrMbTQXx+9CoVMtWPLlbeSE7hcAUdi5gy vYFS7kfso7Vip6umO5VvvBkrAlShiWEuPw9p+lBLg86561uUI0dqTWn8sH0F8JkkJ3GE 5AFA== X-Forwarded-Encrypted: i=1; AJvYcCVZzKxZOv/anDKsQ+EUzJqkoDww+GXcKUXx2PvgIVJ6gSUnoz26s2T5JHenlEaAa/dWGWoTNGA+fOCE+qOSH0Vz4HjfAsD3xnQmDRbV1lgbtJWR X-Gm-Message-State: AOJu0Yy9diDQmPZSdusl4ZG91ZdDhscwI1R8/2u7lit9Rh3r0vfeb5qL rWKVPbneQEi4iAa0TYogRy8kKPK8mFHogy17vtW1ZwXjtteE0cv+ILu/oJ5UOw== X-Google-Smtp-Source: AGHT+IHUqTOBDCc0FzxMHZPzlvLHKFGoK7XVK6UdIi44MV6apc230jjA2Kps2spz4iW6N2fPM1JOFA== X-Received: by 2002:aa7:888f:0:b0:6ea:ad01:357c with SMTP id z15-20020aa7888f000000b006eaad01357cmr2103804pfe.22.1711530870218; Wed, 27 Mar 2024 02:14:30 -0700 (PDT) Received: from [127.0.1.1] ([120.60.52.77]) by smtp.gmail.com with ESMTPSA id h190-20020a6383c7000000b005dc4fc80b21sm8673871pge.70.2024.03.27.02.14.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Mar 2024 02:14:29 -0700 (PDT) From: Manivannan Sadhasivam Date: Wed, 27 Mar 2024 14:43:32 +0530 Subject: [PATCH v12 3/8] PCI: dwc: ep: Remove deinit() callback from struct dw_pcie_ep_ops MIME-Version: 1.0 Message-Id: <20240327-pci-dbi-rework-v12-3-082625472414@linaro.org> References: <20240327-pci-dbi-rework-v12-0-082625472414@linaro.org> In-Reply-To: <20240327-pci-dbi-rework-v12-0-082625472414@linaro.org> To: Jingoo Han , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas , Marek Vasut , Yoshihiro Shimoda , Thierry Reding , Jonathan Hunter , Vidya Sagar , Vignesh Raghavendra , Richard Zhu , Lucas Stach , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Minghuan Lian , Mingkai Hu , Roy Zang , Kunihiko Hayashi , Masami Hiramatsu , Kishon Vijay Abraham I , Jesper Nilsson , Srikanth Thokala , Shawn Lin , Heiko Stuebner , Kishon Vijay Abraham I Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Niklas Cassel , linux-arm-kernel@axis.com, linux-rockchip@lists.infradead.org, Manivannan Sadhasivam , Frank Li X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=4397; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=oxVwts31AynSAqvIvFdaJ3BN9dSR3M2c799N6+9XayE=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBmA+NJyLax6YW3Dcb5Sh5QpLv875ecVd4pu/l86 j0PZPCzgsaJATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZgPjSQAKCRBVnxHm/pHO 9XU1B/9zbXi+U6FRqviLhKGscc2BcpWXO/vZZZSbP1V8JFoZQnH13D+vsY4FHCsxxKSu06ZxXci Pur8uJij9gSzGzokzDgbR32/AAtNIxKbJmJgSp7Rm/DFAGPfOYbmm2CM1m8VXNgxphbS/ADHe2c k6+hszGUixD98daIPtNbm7G3Bo2O1PKrhUIRj5+kjN9Evl6Hr1b56Toj7oGZJbzedElT3HOKsa3 Dw7LsKjusaL39VdWv2jKh2IgAZ2qC/VQCjZ7ub0J+yicfYWLIMdl4MPmlL+Ri/OUCJ8AzkGAmXp RJsivu+Qzbyuwo6MRmVdT54dAvHVgWmOq4iue+ylu5TEgsmZ X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240327_021431_222833_F22B5158 X-CRM114-Status: GOOD ( 16.34 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org deinit() callback was solely introduced for the pcie-rcar-gen4 driver where it is used to do platform specific resource deallocation. And this callback is called right at the end of the dw_pcie_ep_exit() API. So it doesn't matter whether it is called within or outside of dw_pcie_ep_exit() API. So let's remove this callback and directly call rcar_gen4_pcie_ep_deinit() in pcie-rcar-gen4 driver to do resource deallocation after the completion of dw_pcie_ep_exit() API in rcar_gen4_remove_dw_pcie_ep(). This simplifies the DWC layer. Reviewed-by: Frank Li Reviewed-by: Niklas Cassel Reviewed-by: Yoshihiro Shimoda Signed-off-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-designware-ep.c | 9 +-------- drivers/pci/controller/dwc/pcie-designware.h | 1 - drivers/pci/controller/dwc/pcie-rcar-gen4.c | 14 ++++++++------ 3 files changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index dc63478f6910..f06598715412 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -637,9 +637,6 @@ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) epc->mem->window.page_size); pci_epc_mem_exit(epc); - - if (ep->ops->deinit) - ep->ops->deinit(ep); } EXPORT_SYMBOL_GPL(dw_pcie_ep_exit); @@ -844,7 +841,7 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->page_size); if (ret < 0) { dev_err(dev, "Failed to initialize address space\n"); - goto err_ep_deinit; + return ret; } ep->msi_mem = pci_epc_mem_alloc_addr(epc, &ep->msi_mem_phys, @@ -881,10 +878,6 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) err_exit_epc_mem: pci_epc_mem_exit(epc); -err_ep_deinit: - if (ep->ops->deinit) - ep->ops->deinit(ep); - return ret; } EXPORT_SYMBOL_GPL(dw_pcie_ep_init); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 26dae4837462..ab7431a37209 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -333,7 +333,6 @@ struct dw_pcie_rp { struct dw_pcie_ep_ops { void (*pre_init)(struct dw_pcie_ep *ep); void (*init)(struct dw_pcie_ep *ep); - void (*deinit)(struct dw_pcie_ep *ep); int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, unsigned int type, u16 interrupt_num); const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); diff --git a/drivers/pci/controller/dwc/pcie-rcar-gen4.c b/drivers/pci/controller/dwc/pcie-rcar-gen4.c index 0be760ed420b..5d29c4cfe0a0 100644 --- a/drivers/pci/controller/dwc/pcie-rcar-gen4.c +++ b/drivers/pci/controller/dwc/pcie-rcar-gen4.c @@ -352,11 +352,8 @@ static void rcar_gen4_pcie_ep_init(struct dw_pcie_ep *ep) dw_pcie_ep_reset_bar(pci, bar); } -static void rcar_gen4_pcie_ep_deinit(struct dw_pcie_ep *ep) +static void rcar_gen4_pcie_ep_deinit(struct rcar_gen4_pcie *rcar) { - struct dw_pcie *dw = to_dw_pcie_from_ep(ep); - struct rcar_gen4_pcie *rcar = to_rcar_gen4_pcie(dw); - writel(0, rcar->base + PCIEDMAINTSTSEN); rcar_gen4_pcie_common_deinit(rcar); } @@ -410,7 +407,6 @@ static unsigned int rcar_gen4_pcie_ep_get_dbi2_offset(struct dw_pcie_ep *ep, static const struct dw_pcie_ep_ops pcie_ep_ops = { .pre_init = rcar_gen4_pcie_ep_pre_init, .init = rcar_gen4_pcie_ep_init, - .deinit = rcar_gen4_pcie_ep_deinit, .raise_irq = rcar_gen4_pcie_ep_raise_irq, .get_features = rcar_gen4_pcie_ep_get_features, .get_dbi_offset = rcar_gen4_pcie_ep_get_dbi_offset, @@ -420,18 +416,24 @@ static const struct dw_pcie_ep_ops pcie_ep_ops = { static int rcar_gen4_add_dw_pcie_ep(struct rcar_gen4_pcie *rcar) { struct dw_pcie_ep *ep = &rcar->dw.ep; + int ret; if (!IS_ENABLED(CONFIG_PCIE_RCAR_GEN4_EP)) return -ENODEV; ep->ops = &pcie_ep_ops; - return dw_pcie_ep_init(ep); + ret = dw_pcie_ep_init(ep); + if (ret) + rcar_gen4_pcie_ep_deinit(rcar); + + return ret; } static void rcar_gen4_remove_dw_pcie_ep(struct rcar_gen4_pcie *rcar) { dw_pcie_ep_exit(&rcar->dw.ep); + rcar_gen4_pcie_ep_deinit(rcar); } /* Common */