From patchwork Tue May 9 12:41:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13235757 X-Patchwork-Delegate: geert@linux-m68k.org 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5FB5C77B7C for ; Tue, 9 May 2023 12:42:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234784AbjEIMmY (ORCPT ); Tue, 9 May 2023 08:42:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235695AbjEIMmT (ORCPT ); Tue, 9 May 2023 08:42:19 -0400 Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id EDBCD4C03; Tue, 9 May 2023 05:42:12 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.99,262,1677510000"; d="scan'208";a="158709411" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 09 May 2023 21:42:02 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 0698C403832D; Tue, 9 May 2023 21:42:02 +0900 (JST) From: Yoshihiro Shimoda To: jingoohan1@gmail.com, mani@kernel.org, gustavo.pimentel@synopsys.com, fancer.lancer@gmail.com, lpieralisi@kernel.org, robh+dt@kernel.org, kw@linux.com, bhelgaas@google.com, kishon@kernel.org Cc: marek.vasut+renesas@gmail.com, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH v15 15/22] PCI: dwc: Introduce .ep_pre_init() and .ep_deinit() Date: Tue, 9 May 2023 21:41:49 +0900 Message-Id: <20230509124156.150200-16-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230509124156.150200-1-yoshihiro.shimoda.uh@renesas.com> References: <20230509124156.150200-1-yoshihiro.shimoda.uh@renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org Renesas R-Car Gen4 PCIe controllers require vender-specific initialization before .ep_init(). To use dw->dbi and dw->num-lanes in the initialization code, introduce .ep_pre_init() into struct dw_pcie_ep_ops. Also introduce .ep_deinit() to disable the controller by using vender-specific de-initialization. Signed-off-by: Yoshihiro Shimoda --- drivers/pci/controller/dwc/pcie-designware-ep.c | 6 ++++++ drivers/pci/controller/dwc/pcie-designware.h | 2 ++ 2 files changed, 8 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index b11370ef22f1..2bcd723a0682 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -664,6 +664,9 @@ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) struct dw_pcie *pci = to_dw_pcie_from_ep(ep); struct pci_epc *epc = ep->epc; + if (ep->ops->ep_deinit) + ep->ops->ep_deinit(ep); + dw_pcie_edma_remove(pci); if (ep->intx_mem) @@ -777,6 +780,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->phys_base = res->start; ep->addr_size = resource_size(res); + if (ep->ops->ep_pre_init) + ep->ops->ep_pre_init(ep); + dw_pcie_version_detect(pci); dw_pcie_iatu_detect(pci); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index 2639206b4c18..c8a0fd97731f 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -336,7 +336,9 @@ struct dw_pcie_rp { }; struct dw_pcie_ep_ops { + void (*ep_pre_init)(struct dw_pcie_ep *ep); void (*ep_init)(struct dw_pcie_ep *ep); + void (*ep_deinit)(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);