From patchwork Tue Oct 15 08:36:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189853 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7ECB915AB for ; Tue, 15 Oct 2019 08:48:50 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 4FA592089C for ; Tue, 15 Oct 2019 08:48:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="maCBXnKQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4FA592089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=NGyEGlV2djGE6+ndRI2eGJu7nEbl0xsxzo8pqEDRmE4=; b=maCBXnKQVo30AnbuEaZMBhTkVD OKhoi7tnXGIybXU5qszy/Ydo2Az1v74rnWxLFm1bhSvEtbvVlBB7dW7guaOCMEaG73fevECWu4Mgm 1CRCAFasqhNx0vXzzYKKz9OY1rpfQi6TmvcHEJHhcK9J0JAmX2gjY9ZFSi4fWBM7BxxwDsSdVbeVP yvYMJj8rONPLCbjTdbunRv9LvgciBJV9DntK3RDczKHmM2lgt37jITUI/4rSn66JMKnSFmjZ2/FqB 4T5lmzdVUVs92AXk81Vzpb2FbivksxScGzstVgyzerzjVINSZUMA5tOKLtpOURH4cuGdchIIxJuf0 9AzWV+ug==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIVW-00046W-Bt; Tue, 15 Oct 2019 08:48:42 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIUy-0003YK-J3 for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:11 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id D401420087F; Tue, 15 Oct 2019 10:48:06 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 9402420045E; Tue, 15 Oct 2019 10:47:59 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id D8A6640305; Tue, 15 Oct 2019 16:47:50 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/6] PCI: mobiveil: Add the EP driver support Date: Tue, 15 Oct 2019 16:36:57 +0800 Message-Id: <20191015083702.21792-2-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014809_050146_26201933 X-CRM114-Status: GOOD ( 18.11 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the EP driver support for Mobiveil base on endpoint framework. Signed-off-by: Xiaowei Bao --- v2: - Modify the Copyright. MAINTAINERS | 1 + drivers/pci/controller/mobiveil/Kconfig | 5 + drivers/pci/controller/mobiveil/Makefile | 1 + drivers/pci/controller/mobiveil/pcie-mobiveil-ep.c | 569 +++++++++++++++++++++ drivers/pci/controller/mobiveil/pcie-mobiveil.c | 99 +++- drivers/pci/controller/mobiveil/pcie-mobiveil.h | 68 +++ 6 files changed, 735 insertions(+), 8 deletions(-) create mode 100644 drivers/pci/controller/mobiveil/pcie-mobiveil-ep.c diff --git a/MAINTAINERS b/MAINTAINERS index e6a4de0..b997056 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12409,6 +12409,7 @@ F: drivers/ntb/hw/mscc/ PCI DRIVER FOR MOBIVEIL PCIE IP M: Karthikeyan Mitran M: Hou Zhiqiang +M: Xiaowei Bao L: linux-pci@vger.kernel.org S: Supported F: Documentation/devicetree/bindings/pci/mobiveil-pcie.txt diff --git a/drivers/pci/controller/mobiveil/Kconfig b/drivers/pci/controller/mobiveil/Kconfig index c823be8..2054950 100644 --- a/drivers/pci/controller/mobiveil/Kconfig +++ b/drivers/pci/controller/mobiveil/Kconfig @@ -11,6 +11,11 @@ config PCIE_MOBIVEIL_HOST depends on PCI_MSI_IRQ_DOMAIN select PCIE_MOBIVEIL +config PCIE_MOBIVEIL_EP + bool + depends on PCI_ENDPOINT + select PCIE_MOBIVEIL + config PCIE_MOBIVEIL_PLAT bool "Mobiveil AXI PCIe controller" depends on ARCH_ZYNQMP || COMPILE_TEST diff --git a/drivers/pci/controller/mobiveil/Makefile b/drivers/pci/controller/mobiveil/Makefile index 99d879d..686d41f 100644 --- a/drivers/pci/controller/mobiveil/Makefile +++ b/drivers/pci/controller/mobiveil/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_PCIE_MOBIVEIL) += pcie-mobiveil.o obj-$(CONFIG_PCIE_MOBIVEIL_HOST) += pcie-mobiveil-host.o +obj-$(CONFIG_PCIE_MOBIVEIL_EP) += pcie-mobiveil-ep.o obj-$(CONFIG_PCIE_MOBIVEIL_PLAT) += pcie-mobiveil-plat.o obj-$(CONFIG_PCIE_LAYERSCAPE_GEN4) += pcie-layerscape-gen4.o diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil-ep.c b/drivers/pci/controller/mobiveil/pcie-mobiveil-ep.c new file mode 100644 index 0000000..285d7cb --- /dev/null +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil-ep.c @@ -0,0 +1,569 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Mobiveil PCIe Endpoint controller driver + * + * Copyright 2019 NXP + * + * Author: Xiaowei Bao + */ + +#include +#include +#include +#include +#include "pcie-mobiveil.h" + +static void mobiveil_pcie_ep_func_select(struct mobiveil_pcie *pcie, u8 func_no) +{ + u32 func_num; + + /* + * select to access the config space of func_no by setting func_no + * to FUNC_SEL_SHIFT bit of PAB_CTRL register. + */ + func_num = csr_readl(pcie, PAB_CTRL); + func_num &= ~(FUNC_SEL_MASK << FUNC_SEL_SHIFT); + func_num |= (func_no & FUNC_SEL_MASK) << FUNC_SEL_SHIFT; + csr_writel(pcie, func_num, PAB_CTRL); +} + +static void mobiveil_pcie_ep_func_deselect(struct mobiveil_pcie *pcie) +{ + u32 func_num; + + /* + * clear the FUNC_SEL_SHIFT bits when access other registers except + * config space register. + */ + func_num = csr_readl(pcie, PAB_CTRL); + func_num &= ~(FUNC_SEL_MASK << FUNC_SEL_SHIFT); + csr_writel(pcie, func_num, PAB_CTRL); +} + +static void __mobiveil_pcie_ep_reset_bar(struct mobiveil_pcie *pcie, u8 bar) +{ + csr_writel(pcie, bar, GPEX_BAR_SELECT); + csr_writel(pcie, 0, GPEX_BAR_SIZE_LDW); + csr_writel(pcie, 0, GPEX_BAR_SIZE_UDW); +} + +void mobiveil_pcie_ep_reset_bar(struct mobiveil_pcie *pcie, u8 bar) +{ + __mobiveil_pcie_ep_reset_bar(pcie, bar); +} + +static u8 __mobiveil_pcie_ep_find_next_cap(struct mobiveil_pcie *pcie, + u8 func_no, u8 cap_ptr, u8 cap) +{ + u8 cap_id, next_cap_ptr; + u16 reg; + + if (!cap_ptr) + return 0; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = csr_readw(pcie, cap_ptr); + cap_id = (reg & 0x00ff); + + mobiveil_pcie_ep_func_deselect(pcie); + + if (cap_id > PCI_CAP_ID_MAX) + return 0; + + if (cap_id == cap) + return cap_ptr; + + next_cap_ptr = (reg & 0xff00) >> 8; + return __mobiveil_pcie_ep_find_next_cap(pcie, func_no, + next_cap_ptr, cap); +} + +static u8 mobiveil_pcie_ep_find_capability(struct mobiveil_pcie_ep *ep, + u8 func_no, u8 cap) +{ + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + u8 next_cap_ptr; + u16 reg; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = csr_readw(pcie, PCI_CAPABILITY_LIST); + next_cap_ptr = (reg & 0x00ff); + + mobiveil_pcie_ep_func_deselect(pcie); + + return __mobiveil_pcie_ep_find_next_cap(pcie, func_no, + next_cap_ptr, cap); +} + +static int mobiveil_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, + struct pci_epf_header *hdr) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + mobiveil_pcie_ep_func_select(pcie, func_no); + + csr_writew(pcie, hdr->vendorid, PCI_VENDOR_ID); + csr_writew(pcie, hdr->deviceid, PCI_DEVICE_ID); + csr_writeb(pcie, hdr->revid, PCI_REVISION_ID); + csr_writeb(pcie, hdr->progif_code, PCI_CLASS_PROG); + csr_writew(pcie, hdr->subclass_code | hdr->baseclass_code << 8, + PCI_CLASS_DEVICE); + csr_writeb(pcie, hdr->cache_line_size, PCI_CACHE_LINE_SIZE); + csr_writew(pcie, hdr->subsys_vendor_id, PCI_SUBSYSTEM_VENDOR_ID); + csr_writew(pcie, hdr->subsys_id, PCI_SUBSYSTEM_ID); + csr_writeb(pcie, hdr->interrupt_pin, PCI_INTERRUPT_PIN); + + mobiveil_pcie_ep_func_deselect(pcie); + + return 0; +} + +static void mobiveil_pcie_ep_inbound_win(struct mobiveil_pcie_ep *ep, + u8 func_no, enum pci_barno bar, + dma_addr_t cpu_addr) +{ + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + program_ib_windows_ep(pcie, func_no, bar, cpu_addr); +} + +static int mobiveil_pcie_ep_outbound_win(struct mobiveil_pcie_ep *ep, + phys_addr_t phys_addr, + u64 pci_addr, u8 func_no, + size_t size) +{ + u32 free_win; + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + free_win = find_first_zero_bit(ep->apio_wins_map, ep->apio_wins); + if (free_win >= ep->apio_wins) { + dev_err(&pcie->pdev->dev, "No free outbound window\n"); + return -EINVAL; + } + + program_ob_windows_ep(pcie, func_no, free_win, phys_addr, + pci_addr, MEM_WINDOW_TYPE, size); + + set_bit(free_win, ep->apio_wins_map); + ep->apio_addr[free_win] = phys_addr; + + return 0; +} + +static void mobiveil_pcie_ep_clear_bar(struct pci_epc *epc, u8 func_no, + struct pci_epf_bar *epf_bar) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + enum pci_barno bar = epf_bar->barno; + + if (bar < ep->bar_num) { + __mobiveil_pcie_ep_reset_bar(pcie, func_no * ep->bar_num + bar); + + mobiveil_pcie_disable_ib_win_ep(pcie, func_no, bar); + } +} + +static int mobiveil_pcie_ep_set_bar(struct pci_epc *epc, u8 func_no, + struct pci_epf_bar *epf_bar) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + enum pci_barno bar = epf_bar->barno; + size_t size = epf_bar->size; + + if (bar < ep->bar_num) { + mobiveil_pcie_ep_inbound_win(ep, func_no, bar, + epf_bar->phys_addr); + + csr_writel(pcie, func_no * ep->bar_num + bar, + GPEX_BAR_SELECT); + csr_writel(pcie, lower_32_bits(~(size - 1)), + GPEX_BAR_SIZE_LDW); + csr_writel(pcie, upper_32_bits(~(size - 1)), + GPEX_BAR_SIZE_UDW); + } + + return 0; +} + +static int mobiveil_pcie_find_index(struct mobiveil_pcie_ep *ep, + phys_addr_t addr, + u32 *atu_index) +{ + u32 index; + + for (index = 0; index < ep->apio_wins; index++) { + if (ep->apio_addr[index] != addr) + continue; + *atu_index = index; + return 0; + } + + return -EINVAL; +} + +static void mobiveil_pcie_ep_unmap_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t addr) +{ + int ret; + u32 atu_index; + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + ret = mobiveil_pcie_find_index(ep, addr, &atu_index); + if (ret < 0) + return; + + mobiveil_pcie_disable_ob_win(pcie, atu_index); + clear_bit(atu_index, ep->apio_wins_map); +} + +static int mobiveil_pcie_ep_map_addr(struct pci_epc *epc, u8 func_no, + phys_addr_t addr, + u64 pci_addr, size_t size) +{ + int ret; + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + ret = mobiveil_pcie_ep_outbound_win(ep, addr, pci_addr, func_no, size); + if (ret) { + dev_err(&pcie->pdev->dev, "Failed to enable address\n"); + return ret; + } + + return 0; +} + +static int mobiveil_pcie_ep_get_msi(struct pci_epc *epc, u8 func_no) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + u32 val, reg; + u8 msi_cap; + + msi_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSI); + if (!msi_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = msi_cap + PCI_MSI_FLAGS; + val = csr_readw(pcie, reg); + + mobiveil_pcie_ep_func_deselect(pcie); + + if (!(val & PCI_MSI_FLAGS_ENABLE)) + return -EINVAL; + + val = (val & PCI_MSI_FLAGS_QSIZE) >> 4; + + return val; +} + +static int mobiveil_pcie_ep_set_msi(struct pci_epc *epc, + u8 func_no, u8 interrupts) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + u32 val, reg; + u8 msi_cap; + + msi_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSI); + if (!msi_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = msi_cap + PCI_MSI_FLAGS; + val = csr_readw(pcie, reg); + val &= ~PCI_MSI_FLAGS_QMASK; + val |= (interrupts << 1) & PCI_MSI_FLAGS_QMASK; + csr_writew(pcie, val, reg); + + mobiveil_pcie_ep_func_deselect(pcie); + + return 0; +} + +static int mobiveil_pcie_ep_get_msix(struct pci_epc *epc, u8 func_no) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + u32 val, reg; + u8 msix_cap; + + msix_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSIX); + if (!msix_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = msix_cap + PCI_MSIX_FLAGS; + val = csr_readw(pcie, reg); + + mobiveil_pcie_ep_func_deselect(pcie); + + if (!(val & PCI_MSIX_FLAGS_ENABLE)) + return -EINVAL; + + val &= PCI_MSIX_FLAGS_QSIZE; + + return val; +} + +static int mobiveil_pcie_ep_set_msix(struct pci_epc *epc, u8 func_no, + u16 interrupts) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + u32 val, reg; + u8 msix_cap; + + msix_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSIX); + if (!msix_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = msix_cap + PCI_MSIX_FLAGS; + val = csr_readw(pcie, reg); + val &= ~PCI_MSIX_FLAGS_QSIZE; + val |= interrupts; + csr_writew(pcie, val, reg); + + mobiveil_pcie_ep_func_deselect(pcie); + + return 0; +} + +static int mobiveil_pcie_ep_raise_irq(struct pci_epc *epc, u8 func_no, + enum pci_epc_irq_type type, + u16 interrupt_num) +{ + struct mobiveil_pcie_ep *ep = epc_get_drvdata(epc); + + if (!ep->ops->raise_irq) + return -EINVAL; + + return ep->ops->raise_irq(ep, func_no, type, interrupt_num); +} + +static const struct pci_epc_features* +mobiveil_pcie_ep_get_features(struct pci_epc *epc, u8 func_no) +{ + struct mobiveil_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 = mobiveil_pcie_ep_write_header, + .set_bar = mobiveil_pcie_ep_set_bar, + .clear_bar = mobiveil_pcie_ep_clear_bar, + .map_addr = mobiveil_pcie_ep_map_addr, + .unmap_addr = mobiveil_pcie_ep_unmap_addr, + .set_msi = mobiveil_pcie_ep_set_msi, + .get_msi = mobiveil_pcie_ep_get_msi, + .set_msix = mobiveil_pcie_ep_set_msix, + .get_msix = mobiveil_pcie_ep_get_msix, + .raise_irq = mobiveil_pcie_ep_raise_irq, + .get_features = mobiveil_pcie_ep_get_features, +}; + +int mobiveil_pcie_ep_raise_legacy_irq(struct mobiveil_pcie_ep *ep, u8 func_no) +{ + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + + dev_err(&pcie->pdev->dev, "EP cannot trigger legacy IRQs\n"); + + return -EINVAL; +} + +int mobiveil_pcie_ep_raise_msi_irq(struct mobiveil_pcie_ep *ep, u8 func_no, + u8 interrupt_num) +{ + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + struct pci_epc *epc = ep->epc; + u16 msg_ctrl, msg_data; + u32 msg_addr_lower, msg_addr_upper, reg; + u64 msg_addr; + bool has_upper; + int ret; + u8 msi_cap; + + msi_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSI); + if (!msi_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_select(pcie, func_no); + + reg = msi_cap + PCI_MSI_FLAGS; + msg_ctrl = csr_readw(pcie, reg); + has_upper = !!(msg_ctrl & PCI_MSI_FLAGS_64BIT); + reg = msi_cap + PCI_MSI_ADDRESS_LO; + msg_addr_lower = csr_readl(pcie, reg); + if (has_upper) { + reg = msi_cap + PCI_MSI_ADDRESS_HI; + msg_addr_upper = csr_readl(pcie, reg); + reg = msi_cap + PCI_MSI_DATA_64; + msg_data = csr_readw(pcie, reg); + } else { + msg_addr_upper = 0; + reg = msi_cap + PCI_MSI_DATA_32; + msg_data = csr_readw(pcie, reg); + } + msg_addr = ((u64) msg_addr_upper) << 32 | msg_addr_lower; + + mobiveil_pcie_ep_func_deselect(pcie); + + ret = mobiveil_pcie_ep_map_addr(epc, func_no, ep->msi_mem_phys, + msg_addr, epc->mem->page_size); + if (ret) + return ret; + + writel(msg_data | (interrupt_num - 1), ep->msi_mem); + + mobiveil_pcie_ep_unmap_addr(epc, func_no, ep->msi_mem_phys); + + return 0; +} + +int mobiveil_pcie_ep_raise_msix_irq(struct mobiveil_pcie_ep *ep, u8 func_no, + u16 interrupt_num) +{ + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + struct pci_epc *epc = ep->epc; + u32 msg_addr_upper, msg_addr_lower; + u32 msg_data; + u64 msg_addr; + u8 msix_cap; + int ret; + + msix_cap = mobiveil_pcie_ep_find_capability(ep, func_no, + PCI_CAP_ID_MSIX); + if (!msix_cap) + return -EINVAL; + + mobiveil_pcie_ep_func_deselect(pcie); + + msg_addr_lower = csr_readl(pcie, PAB_MSIX_TABLE_PBA_ACCESS + + PCI_MSIX_ENTRY_LOWER_ADDR + + (interrupt_num - 1) * PCI_MSIX_ENTRY_SIZE); + msg_addr_upper = csr_readl(pcie, PAB_MSIX_TABLE_PBA_ACCESS + + PCI_MSIX_ENTRY_UPPER_ADDR + + (interrupt_num - 1) * PCI_MSIX_ENTRY_SIZE); + msg_addr = ((u64) msg_addr_upper) << 32 | msg_addr_lower; + msg_data = csr_readl(pcie, PAB_MSIX_TABLE_PBA_ACCESS + + PCI_MSIX_ENTRY_DATA + + (interrupt_num - 1) * PCI_MSIX_ENTRY_SIZE); + + ret = mobiveil_pcie_ep_map_addr(epc, func_no, ep->msi_mem_phys, + msg_addr, epc->mem->page_size); + if (ret) + return ret; + + writel(msg_data, ep->msi_mem); + + mobiveil_pcie_ep_unmap_addr(epc, func_no, ep->msi_mem_phys); + + return 0; +} + +void mobiveil_pcie_ep_exit(struct mobiveil_pcie_ep *ep) +{ + struct pci_epc *epc = ep->epc; + + pci_epc_mem_free_addr(epc, ep->msi_mem_phys, ep->msi_mem, + epc->mem->page_size); + + pci_epc_mem_exit(epc); +} + +int mobiveil_pcie_ep_init(struct mobiveil_pcie_ep *ep) +{ + int ret; + void *addr; + struct pci_epc *epc; + struct mobiveil_pcie *pcie = to_mobiveil_pcie_from_ep(ep); + struct device *dev = &pcie->pdev->dev; + struct device_node *np = dev->of_node; + + if (!pcie->csr_axi_slave_base) { + dev_err(dev, "csr_base is not populated\n"); + return -EINVAL; + } + + ret = of_property_read_u32(np, "apio-wins", &ep->apio_wins); + if (ret < 0) { + dev_err(dev, "Unable to read apio-wins property\n"); + return ret; + } + + if (ep->apio_wins > MAX_IATU_OUT) { + dev_err(dev, "Invalid apio-wins\n"); + return -EINVAL; + } + ep->apio_wins_map = devm_kcalloc(dev, + BITS_TO_LONGS(ep->apio_wins), + sizeof(long), + GFP_KERNEL); + if (!ep->apio_wins_map) + return -ENOMEM; + + addr = devm_kcalloc(dev, ep->apio_wins, sizeof(phys_addr_t), + GFP_KERNEL); + if (!addr) + return -ENOMEM; + + ep->apio_addr = addr; + + mobiveil_pcie_enable_bridge_pio(pcie); + mobiveil_pcie_enable_engine_apio(pcie); + mobiveil_pcie_enable_engine_ppio(pcie); + mobiveil_pcie_enable_msi_ep(pcie); + + epc = devm_pci_epc_create(dev, &epc_ops); + if (IS_ERR(epc)) { + dev_err(dev, "Failed to create epc device\n"); + return PTR_ERR(epc); + } + + ep->epc = epc; + epc_set_drvdata(epc, ep); + + ret = of_property_read_u8(np, "max-functions", &epc->max_functions); + if (ret < 0) + epc->max_functions = 1; + + if (ep->ops->ep_init) + ep->ops->ep_init(ep); + + ret = __pci_epc_mem_init(epc, ep->phys_base, ep->addr_size, + ep->page_size); + if (ret < 0) { + dev_err(dev, "Failed to initialize address space\n"); + return ret; + } + + ep->msi_mem = pci_epc_mem_alloc_addr(epc, &ep->msi_mem_phys, + epc->mem->page_size); + if (!ep->msi_mem) { + dev_err(dev, "Failed to reserve memory for MSI/MSI-X\n"); + return -ENOMEM; + } + + return 0; +} diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.c b/drivers/pci/controller/mobiveil/pcie-mobiveil.c index 94b23be..6d47164 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.c +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.c @@ -168,18 +168,12 @@ void program_ib_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, /* * routine to program the outbound windows */ -void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, - u64 pci_addr, u32 type, u64 size) +void __program_ob_windows(struct mobiveil_pcie *pcie, u8 func_no, int win_num, + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) { u32 value; u64 size64 = ~(size - 1); - if (win_num >= pcie->apio_wins) { - dev_err(&pcie->pdev->dev, - "ERROR: max outbound windows reached !\n"); - return; - } - /* * program Enable Bit to 1, Type Bit to (00) base 2, AXI Window Size Bit * to 4 KB in PAB_AXI_AMAP_CTRL register @@ -192,6 +186,7 @@ void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, csr_writel(pcie, upper_32_bits(size64), PAB_EXT_AXI_AMAP_SIZE(win_num)); + csr_writel(pcie, func_no, PAB_AXI_AMAP_PCI_HDR_PARAM(win_num)); /* * program AXI window base with appropriate value in * PAB_AXI_AMAP_AXI_WIN0 register @@ -205,10 +200,98 @@ void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, PAB_AXI_AMAP_PEX_WIN_L(win_num)); csr_writel(pcie, upper_32_bits(pci_addr), PAB_AXI_AMAP_PEX_WIN_H(win_num)); +} + +void program_ob_windows(struct mobiveil_pcie *pcie, int win_num, u64 cpu_addr, + u64 pci_addr, u32 type, u64 size) +{ + if (win_num >= pcie->apio_wins) { + dev_err(&pcie->pdev->dev, + "ERROR: max outbound windows reached !\n"); + return; + } + + __program_ob_windows(pcie, 0, win_num, cpu_addr, + pci_addr, type, size); pcie->ob_wins_configured++; } +void program_ob_windows_ep(struct mobiveil_pcie *pcie, u8 func_no, int win_num, + u64 cpu_addr, u64 pci_addr, u32 type, u64 size) +{ + if (size & (size - 1)) + size = 1 << (1 + ilog2(size)); + + __program_ob_windows(pcie, func_no, win_num, cpu_addr, + pci_addr, type, size); +} + +void program_ib_windows_ep(struct mobiveil_pcie *pcie, u8 func_no, + int bar, u64 phys) +{ + csr_writel(pcie, upper_32_bits(phys), + PAB_EXT_PEX_BAR_AMAP(func_no, bar)); + csr_writel(pcie, lower_32_bits(phys) | PEX_BAR_AMAP_EN, + PAB_PEX_BAR_AMAP(func_no, bar)); +} + +void mobiveil_pcie_disable_ib_win_ep(struct mobiveil_pcie *pcie, + u8 func_no, u8 bar) +{ + u32 val; + + val = csr_readl(pcie, PAB_PEX_BAR_AMAP(func_no, bar)); + val &= ~(1 << 0); + csr_writel(pcie, val, PAB_PEX_BAR_AMAP(func_no, bar)); +} + +void mobiveil_pcie_disable_ob_win(struct mobiveil_pcie *pcie, int win_num) +{ + u32 val; + + val = csr_readl(pcie, PAB_AXI_AMAP_CTRL(win_num)); + val &= ~(1 << WIN_ENABLE_SHIFT); + csr_writel(pcie, val, PAB_AXI_AMAP_CTRL(win_num)); +} + +void mobiveil_pcie_enable_bridge_pio(struct mobiveil_pcie *pcie) +{ + u32 val; + + val = csr_readl(pcie, PAB_CTRL); + val |= 1 << AMBA_PIO_ENABLE_SHIFT; + val |= 1 << PEX_PIO_ENABLE_SHIFT; + csr_writel(pcie, val, PAB_CTRL); +} + +void mobiveil_pcie_enable_engine_apio(struct mobiveil_pcie *pcie) +{ + u32 val; + + val = csr_readl(pcie, PAB_AXI_PIO_CTRL); + val |= APIO_EN_MASK; + csr_writel(pcie, val, PAB_AXI_PIO_CTRL); +} + +void mobiveil_pcie_enable_engine_ppio(struct mobiveil_pcie *pcie) +{ + u32 val; + + val = csr_readl(pcie, PAB_PEX_PIO_CTRL); + val |= 1 << PIO_ENABLE_SHIFT; + csr_writel(pcie, val, PAB_PEX_PIO_CTRL); +} + +void mobiveil_pcie_enable_msi_ep(struct mobiveil_pcie *pcie) +{ + u32 val; + + val = csr_readl(pcie, PAB_INTP_AMBA_MISC_ENB); + val |= PAB_INTP_PAMR; + csr_writel(pcie, val, PAB_INTP_AMBA_MISC_ENB); +} + int mobiveil_bringup_link(struct mobiveil_pcie *pcie) { int retries; diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h index b7e9603..7308fa4 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h @@ -15,8 +15,12 @@ #include #include #include +#include +#include + #include "../../pci.h" +#define MAX_IATU_OUT 256 /* register offsets and bit positions */ /* @@ -42,6 +46,9 @@ #define PAGE_SEL_MASK 0x3f #define PAGE_LO_MASK 0x3ff #define PAGE_SEL_OFFSET_SHIFT 10 +#define FUNC_SEL_SHIFT 19 +#define FUNC_SEL_MASK 0x1ff +#define MSI_SW_CTRL_EN BIT(29) #define PAB_ACTIVITY_STAT 0x81c @@ -52,6 +59,7 @@ #define PIO_ENABLE_SHIFT 0 #define PAB_INTP_AMBA_MISC_ENB 0x0b0c +#define PAB_INTP_PAMR BIT(0) #define PAB_INTP_AMBA_MISC_STAT 0x0b1c #define PAB_INTP_RESET BIT(1) #define PAB_INTP_MSI BIT(3) @@ -72,6 +80,8 @@ #define WIN_TYPE_MASK 0x3 #define WIN_SIZE_MASK 0xfffffc00 +#define PAB_AXI_AMAP_PCI_HDR_PARAM(win) PAB_EXT_REG_ADDR(0x5ba0, win) + #define PAB_EXT_AXI_AMAP_SIZE(win) PAB_EXT_REG_ADDR(0xbaf0, win) #define PAB_EXT_AXI_AMAP_AXI_WIN(win) PAB_EXT_REG_ADDR(0x80a0, win) @@ -101,6 +111,18 @@ #define PAB_PEX_AMAP_PEX_WIN_L(win) PAB_REG_ADDR(0x4ba8, win) #define PAB_PEX_AMAP_PEX_WIN_H(win) PAB_REG_ADDR(0x4bac, win) +/* PPIO WINs EP mode */ +#define PAB_PEX_BAR_AMAP(func, bar) (0x1ba0 + 0x20 * func + 4 * bar) +#define PAB_EXT_PEX_BAR_AMAP(func, bar) (0x84a0 + 0x20 * func + 4 * bar) +#define PEX_BAR_AMAP_EN BIT(0) + +#define PAB_MSIX_TABLE_PBA_ACCESS 0xD000 + +#define GPEX_BAR_ENABLE 0x4D4 +#define GPEX_BAR_SIZE_LDW 0x4D8 +#define GPEX_BAR_SIZE_UDW 0x4DC +#define GPEX_BAR_SELECT 0x4E0 + /* starting offset of INTX bits in status register */ #define PAB_INTX_START 5 @@ -138,6 +160,7 @@ ((off >> PAGE_SEL_OFFSET_SHIFT) & PAGE_SEL_MASK) struct mobiveil_pcie; +struct mobiveil_pcie_ep; struct mobiveil_msi { /* MSI information */ struct mutex lock; /* protect bitmap variable */ @@ -170,6 +193,28 @@ struct mobiveil_pab_ops { int (*host_init)(struct mobiveil_pcie *pcie); }; +struct mobiveil_pcie_ep_ops { + void (*ep_init)(struct mobiveil_pcie_ep *ep); + int (*raise_irq)(struct mobiveil_pcie_ep *ep, u8 func_no, + enum pci_epc_irq_type type, u16 interrupt_num); + const struct pci_epc_features* (*get_features) + (struct mobiveil_pcie_ep *ep); +}; + +struct mobiveil_pcie_ep { + struct pci_epc *epc; + const struct mobiveil_pcie_ep_ops *ops; + phys_addr_t phys_base; + size_t addr_size; + size_t page_size; + phys_addr_t *apio_addr; + unsigned long *apio_wins_map; + u32 apio_wins; + void __iomem *msi_mem; + phys_addr_t msi_mem_phys; + u8 bar_num; +}; + struct mobiveil_pcie { struct platform_device *pdev; struct list_head *resources; @@ -183,8 +228,12 @@ struct mobiveil_pcie { const struct mobiveil_pab_ops *ops; struct root_port rp; struct pci_host_bridge *bridge; + struct mobiveil_pcie_ep ep; }; +#define to_mobiveil_pcie_from_ep(endpoint) \ + container_of((endpoint), struct mobiveil_pcie, ep) + int mobiveil_pcie_host_probe(struct mobiveil_pcie *pcie); int mobiveil_host_init(struct mobiveil_pcie *pcie, bool reinit); bool mobiveil_pcie_link_up(struct mobiveil_pcie *pcie); @@ -226,4 +275,23 @@ static inline void csr_writeb(struct mobiveil_pcie *pcie, u32 val, u32 off) csr_write(pcie, val, off, 0x1); } +void program_ib_windows_ep(struct mobiveil_pcie *pcie, u8 func_no, + int bar, u64 phys); +void program_ob_windows_ep(struct mobiveil_pcie *pcie, u8 func_num, int win_num, + u64 cpu_addr, u64 pci_addr, u32 type, u64 size); +void mobiveil_pcie_disable_ib_win_ep(struct mobiveil_pcie *pci, + u8 func_no, u8 bar); +void mobiveil_pcie_disable_ob_win(struct mobiveil_pcie *pcie, int win_num); +int mobiveil_pcie_ep_init(struct mobiveil_pcie_ep *ep); +int mobiveil_pcie_ep_raise_legacy_irq(struct mobiveil_pcie_ep *ep, u8 func_no); +int mobiveil_pcie_ep_raise_msi_irq(struct mobiveil_pcie_ep *ep, u8 func_no, + u8 interrupt_num); +int mobiveil_pcie_ep_raise_msix_irq(struct mobiveil_pcie_ep *ep, u8 func_no, + u16 interrupt_num); +void mobiveil_pcie_ep_reset_bar(struct mobiveil_pcie *pci, u8 bar); +u8 mobiveil_pcie_ep_get_bar_num(struct mobiveil_pcie_ep *ep, u8 func_no); +void mobiveil_pcie_enable_bridge_pio(struct mobiveil_pcie *pci); +void mobiveil_pcie_enable_engine_apio(struct mobiveil_pcie *pci); +void mobiveil_pcie_enable_engine_ppio(struct mobiveil_pcie *pci); +void mobiveil_pcie_enable_msi_ep(struct mobiveil_pcie *pci); #endif /* _PCIE_MOBIVEIL_H */ From patchwork Tue Oct 15 08:36:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189847 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C5C914ED for ; Tue, 15 Oct 2019 08:48:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id EEE3C2089C for ; Tue, 15 Oct 2019 08:48:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ASSuqP32" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EEE3C2089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=Q8MSmD5sSEwGkJfrRIBTkK0bSQT3rTuTjnlqRiBgK2k=; b=ASSuqP32P7zW41Akk1OwPyg4is w/Ty2vW4M6b0a0aUhxBhilIE9ahalhYCpaji+UmKt1NFfTPuvYMEgrwU/hqhvua7IaEvrVzNGsV1m q4a2LgqqwBMlzMstJtHbNXnnP7p187qp9QZS2Tug3aKPGbL8kEGFj2aEotKqtJdAImUb/9h4Ob2Gh NkYmwpfGgNigtU2PJF6SlBTkW+TPdRa+KYW1uzKvO72cVB+NTAy+uQsfdZak59s1Luh9tSwWGpnBn sMs0YzQxUEbU1dRATBgtK8LEWFEXeIuocN6bQMOWXRNFb3knExWS5wbyOIGAFZWpM6xj1peXmm+4H 3r4/cmTg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIVD-0003mT-6p; Tue, 15 Oct 2019 08:48:23 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIUz-0003YR-6Q for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:10 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id E280C200056; Tue, 15 Oct 2019 10:48:07 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 14D55200913; Tue, 15 Oct 2019 10:48:01 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 7354A402CA; Tue, 15 Oct 2019 16:47:52 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 2/6] dt-bindings: Add DT binding for PCIE GEN4 EP of the layerscape Date: Tue, 15 Oct 2019 16:36:58 +0800 Message-Id: <20191015083702.21792-3-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014809_370354_F9F118FE X-CRM114-Status: UNSURE ( 8.19 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the documentation for the Device Tree binding of the layerscape PCIe GEN4 controller with EP mode. Signed-off-by: Xiaowei Bao --- v2: - remove the status entry in EP Example. .../bindings/pci/layerscape-pcie-gen4.txt | 27 +++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt index b40fb5d..06f9309 100644 --- a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt +++ b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt @@ -3,6 +3,8 @@ NXP Layerscape PCIe Gen4 controller This PCIe controller is based on the Mobiveil PCIe IP and thus inherits all the common properties defined in mobiveil-pcie.txt. +HOST MODE +========= Required properties: - compatible: should contain the platform identifier such as: "fsl,lx2160a-pcie" @@ -23,7 +25,20 @@ Required properties: - msi-parent : See the generic MSI binding described in Documentation/devicetree/bindings/interrupt-controller/msi.txt. -Example: +DEVICE MODE +========= +Required properties: +- compatible: should contain the platform identifier such as: + "fsl,lx2160a-pcie-ep" +- reg: base addresses and lengths of the PCIe controller register blocks. + "regs": PCIe controller registers. + "addr_space" EP device CPU address. +- apio-wins: number of requested apio outbound windows. + +Optional Property: +- max-functions: Maximum number of functions that can be configured (default 1). + +RC Example: pcie@3400000 { compatible = "fsl,lx2160a-pcie"; @@ -50,3 +65,13 @@ Example: <0000 0 0 3 &gic 0 0 GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>, <0000 0 0 4 &gic 0 0 GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>; }; + +EP Example: + + pcie_ep@3400000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03400000 0x0 0x00100000 + 0x80 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <8>; + }; From patchwork Tue Oct 15 08:36:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189855 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 301E4112B for ; Tue, 15 Oct 2019 08:49:00 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A30D92089C for ; Tue, 15 Oct 2019 08:48:59 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="X2z2ZY0y" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A30D92089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=+4i+OXI0Uus1L3MtOcA4WcPxZdD7VPFgwYg6gfmwRew=; b=X2z2ZY0yiuJjBCY2447N2WdBqO ovBdxtyQsuIdZ1a3cg2Bos0CyXd5EQtKyte/kLud1pqQ4sonuZ7unhn71TlN6a/GnHd3y2zW/B+D5 peuVkkxZdjfvRDQUWVbFJTN/aE7pWbauKuLyYYRZ1neDGYmpXy8APX4+9VTq4Vm4MuXFv+Vpkwbb1 YVn3NmneJcAiM0AGTMTGRsQ30U/jjqLp3aQuX3asbAtsWsSf9Z1dMX+QeZ2sdCiKnIK6+qr5qKWQd 2AViel9siDDJhVSilCHTvQCryK7W7s/gXqKVoM3lVYLlj17UlaySEKNTRswuuRm0hA2gVfWLYNtzK Y+URrIpw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIVm-0004KH-IJ; Tue, 15 Oct 2019 08:48:58 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIV1-0003ZX-3e for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:13 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 9D2A91A00B8; Tue, 15 Oct 2019 10:48:09 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 93A661A07D2; Tue, 15 Oct 2019 10:48:02 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id EAD56402E2; Tue, 15 Oct 2019 16:47:53 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/6] PCI: mobiveil: Add PCIe Gen4 EP driver for NXP Layerscape SoCs Date: Tue, 15 Oct 2019 16:36:59 +0800 Message-Id: <20191015083702.21792-4-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014811_453937_9488DA16 X-CRM114-Status: GOOD ( 14.87 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This PCIe controller is based on the Mobiveil GPEX IP, it work in EP mode if select this config opteration. Signed-off-by: Xiaowei Bao --- v2: - Modify the Copyright. MAINTAINERS | 2 + drivers/pci/controller/mobiveil/Kconfig | 17 ++- drivers/pci/controller/mobiveil/Makefile | 1 + .../controller/mobiveil/pcie-layerscape-gen4-ep.c | 156 +++++++++++++++++++++ 4 files changed, 173 insertions(+), 3 deletions(-) create mode 100644 drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c diff --git a/MAINTAINERS b/MAINTAINERS index b997056..0858b54 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -12363,11 +12363,13 @@ F: drivers/pci/controller/dwc/*layerscape* PCI DRIVER FOR NXP LAYERSCAPE GEN4 CONTROLLER M: Hou Zhiqiang +M: Xiaowei Bao L: linux-pci@vger.kernel.org L: linux-arm-kernel@lists.infradead.org S: Maintained F: Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt F: drivers/pci/controller/mobibeil/pcie-layerscape-gen4.c +F: drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c PCI DRIVER FOR GENERIC OF HOSTS M: Will Deacon diff --git a/drivers/pci/controller/mobiveil/Kconfig b/drivers/pci/controller/mobiveil/Kconfig index 2054950..0696b6e 100644 --- a/drivers/pci/controller/mobiveil/Kconfig +++ b/drivers/pci/controller/mobiveil/Kconfig @@ -27,13 +27,24 @@ config PCIE_MOBIVEIL_PLAT for address translation and it is a PCIe Gen4 IP. config PCIE_LAYERSCAPE_GEN4 - bool "Freescale Layerscape PCIe Gen4 controller" + bool "Freescale Layerscpe PCIe Gen4 controller in RC mode" depends on PCI depends on OF && (ARM64 || ARCH_LAYERSCAPE) depends on PCI_MSI_IRQ_DOMAIN select PCIE_MOBIVEIL_HOST help Say Y here if you want PCIe Gen4 controller support on - Layerscape SoCs. The PCIe controller can work in RC or - EP mode according to RCW[HOST_AGT_PEX] setting. + Layerscape SoCs. And the PCIe controller work in RC mode + by setting the RCW[HOST_AGT_PEX] to 0. + +config PCIE_LAYERSCAPE_GEN4_EP + bool "Freescale Layerscpe PCIe Gen4 controller in EP mode" + depends on PCI + depends on OF && (ARM64 || ARCH_LAYERSCAPE) + depends on PCI_ENDPOINT + select PCIE_MOBIVEIL_EP + help + Say Y here if you want PCIe Gen4 controller support on + Layerscape SoCs. And the PCIe controller work in EP mode + by setting the RCW[HOST_AGT_PEX] to 1. endmenu diff --git a/drivers/pci/controller/mobiveil/Makefile b/drivers/pci/controller/mobiveil/Makefile index 686d41f..6f54856 100644 --- a/drivers/pci/controller/mobiveil/Makefile +++ b/drivers/pci/controller/mobiveil/Makefile @@ -4,3 +4,4 @@ obj-$(CONFIG_PCIE_MOBIVEIL_HOST) += pcie-mobiveil-host.o obj-$(CONFIG_PCIE_MOBIVEIL_EP) += pcie-mobiveil-ep.o obj-$(CONFIG_PCIE_MOBIVEIL_PLAT) += pcie-mobiveil-plat.o obj-$(CONFIG_PCIE_LAYERSCAPE_GEN4) += pcie-layerscape-gen4.o +obj-$(CONFIG_PCIE_LAYERSCAPE_GEN4_EP) += pcie-layerscape-gen4-ep.o diff --git a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c new file mode 100644 index 0000000..56603ea --- /dev/null +++ b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c @@ -0,0 +1,156 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * PCIe controller EP driver for Freescale Layerscape SoCs + * + * Copyright 2019 NXP + * + * Author: Xiaowei Bao + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pcie-mobiveil.h" + +#define PCIE_LX2_BAR_NUM 4 + +#define to_ls_pcie_g4_ep(x) dev_get_drvdata((x)->dev) + +struct ls_pcie_g4_ep { + struct mobiveil_pcie *mv_pci; +}; + +static const struct of_device_id ls_pcie_g4_ep_of_match[] = { + { .compatible = "fsl,lx2160a-pcie-ep",}, + { }, +}; + +static const struct pci_epc_features ls_pcie_g4_epc_features = { + .linkup_notifier = false, + .msi_capable = true, + .msix_capable = true, + .reserved_bar = (1 << BAR_4) | (1 << BAR_5), +}; + +static const struct pci_epc_features* +ls_pcie_g4_ep_get_features(struct mobiveil_pcie_ep *ep) +{ + return &ls_pcie_g4_epc_features; +} + +static void ls_pcie_g4_ep_init(struct mobiveil_pcie_ep *ep) +{ + struct mobiveil_pcie *mv_pci = to_mobiveil_pcie_from_ep(ep); + int win_idx; + u8 bar; + + ep->bar_num = PCIE_LX2_BAR_NUM; + + for (bar = BAR_0; bar < ep->epc->max_functions * ep->bar_num; bar++) + mobiveil_pcie_ep_reset_bar(mv_pci, bar); + + for (win_idx = 0; win_idx < ep->apio_wins; win_idx++) + mobiveil_pcie_disable_ob_win(mv_pci, win_idx); +} + +static int ls_pcie_g4_ep_raise_irq(struct mobiveil_pcie_ep *ep, u8 func_no, + enum pci_epc_irq_type type, + u16 interrupt_num) +{ + struct mobiveil_pcie *mv_pci = to_mobiveil_pcie_from_ep(ep); + + switch (type) { + case PCI_EPC_IRQ_LEGACY: + return mobiveil_pcie_ep_raise_legacy_irq(ep, func_no); + case PCI_EPC_IRQ_MSI: + return mobiveil_pcie_ep_raise_msi_irq(ep, func_no, + interrupt_num); + case PCI_EPC_IRQ_MSIX: + return mobiveil_pcie_ep_raise_msix_irq(ep, func_no, + interrupt_num); + default: + dev_err(&mv_pci->pdev->dev, "UNKNOWN IRQ type\n"); + } + + return 0; +} + +static const struct mobiveil_pcie_ep_ops pcie_ep_ops = { + .ep_init = ls_pcie_g4_ep_init, + .raise_irq = ls_pcie_g4_ep_raise_irq, + .get_features = ls_pcie_g4_ep_get_features, +}; + +static int __init ls_pcie_gen4_add_pcie_ep(struct ls_pcie_g4_ep *ls_ep, + struct platform_device *pdev) +{ + struct mobiveil_pcie *mv_pci = ls_ep->mv_pci; + struct device *dev = &pdev->dev; + struct mobiveil_pcie_ep *ep; + struct resource *res; + int ret; + + ep = &mv_pci->ep; + ep->ops = &pcie_ep_ops; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "addr_space"); + if (!res) + return -EINVAL; + + ep->phys_base = res->start; + ep->addr_size = resource_size(res); + + ret = mobiveil_pcie_ep_init(ep); + if (ret) { + dev_err(dev, "failed to initialize layerscape endpoint\n"); + return ret; + } + + return 0; +} + +static int __init ls_pcie_g4_ep_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mobiveil_pcie *mv_pci; + struct ls_pcie_g4_ep *ls_ep; + struct resource *res; + int ret; + + ls_ep = devm_kzalloc(dev, sizeof(*ls_ep), GFP_KERNEL); + if (!ls_ep) + return -ENOMEM; + + mv_pci = devm_kzalloc(dev, sizeof(*mv_pci), GFP_KERNEL); + if (!mv_pci) + return -ENOMEM; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + mv_pci->csr_axi_slave_base = devm_pci_remap_cfg_resource(dev, res); + if (IS_ERR(mv_pci->csr_axi_slave_base)) + return PTR_ERR(mv_pci->csr_axi_slave_base); + + mv_pci->pdev = pdev; + ls_ep->mv_pci = mv_pci; + + platform_set_drvdata(pdev, ls_ep); + + ret = ls_pcie_gen4_add_pcie_ep(ls_ep, pdev); + + return ret; +} + +static struct platform_driver ls_pcie_g4_ep_driver = { + .driver = { + .name = "layerscape-pcie-gen4-ep", + .of_match_table = ls_pcie_g4_ep_of_match, + .suppress_bind_attrs = true, + }, +}; +builtin_platform_driver_probe(ls_pcie_g4_ep_driver, ls_pcie_g4_ep_probe); From patchwork Tue Oct 15 08:37:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189857 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C35B8112B for ; Tue, 15 Oct 2019 08:49:15 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A187A2089C for ; Tue, 15 Oct 2019 08:49:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RGuXbYaU" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A187A2089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=T80gm734g/Qw+QHIRgr183+JQOEioy1LYwa0NnMzPoY=; b=RGuXbYaUTIrjrNPRFEm5P1KYs2 eAmFjflGudt2rx2AdheEWqEHYNMmXpoSekS5DuOcOAsTOIZr6KbsActDHU08JaLYsWbFxTX9K622T kmPPYp0bcC784zs6MzVwWQnAsiSxhUAq+PbAhGxPAObnVv6YHVeNfDKKNGQidBlggB+D7urIzE5fr f0QHT6CvphZDWozsNbudV0nDkMxxbD7pOuLLcOKOlsnKzmiM2V+cFQGNx6PwWDeEcV80LlSsV382k I/x8+jR9Sq1F6+SocvMjHw1YGeuJZqMirKOnu2lKUjMPhPQSY4az9ev2EmLmqcR8hosW7f+9XNx1u jvrtfvIw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIW2-0004aC-9N; Tue, 15 Oct 2019 08:49:14 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIV2-0003az-Be for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:13 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id E791820045E; Tue, 15 Oct 2019 10:48:10 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 171A1200449; Tue, 15 Oct 2019 10:48:04 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 7436C4030B; Tue, 15 Oct 2019 16:47:55 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/6] PCI: mobiveil: Add workaround for unsupported request error Date: Tue, 15 Oct 2019 16:37:00 +0800 Message-Id: <20191015083702.21792-5-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014812_556573_CAEB3C0B X-CRM114-Status: UNSURE ( 8.39 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.21 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Errata: unsupported request error on inbound posted write transaction, PCIe controller reports advisory error instead of uncorrectable error message to RC. Signed-off-by: Xiaowei Bao --- v3: - Use BIT replce the expression. drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c | 13 +++++++++++++ drivers/pci/controller/mobiveil/pcie-mobiveil.h | 4 ++++ 2 files changed, 17 insertions(+) diff --git a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c index 56603ea..82bb38d 100644 --- a/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c +++ b/drivers/pci/controller/mobiveil/pcie-layerscape-gen4-ep.c @@ -49,6 +49,19 @@ static void ls_pcie_g4_ep_init(struct mobiveil_pcie_ep *ep) struct mobiveil_pcie *mv_pci = to_mobiveil_pcie_from_ep(ep); int win_idx; u8 bar; + u32 val; + + /* + * Errata: unsupported request error on inbound posted write + * transaction, PCIe controller reports advisory error instead + * of uncorrectable error message to RC. + * workaround: set the bit20(unsupported_request_Error_severity) with + * value 1 in uncorrectable_Error_Severity_Register, make the + * unsupported request error generate the fatal error. + */ + val = csr_readl(mv_pci, CFG_UNCORRECTABLE_ERROR_SEVERITY); + val |= BIT(UNSUPPORTED_REQUEST_ERROR_SHIFT); + csr_writel(mv_pci, val, CFG_UNCORRECTABLE_ERROR_SEVERITY); ep->bar_num = PCIE_LX2_BAR_NUM; diff --git a/drivers/pci/controller/mobiveil/pcie-mobiveil.h b/drivers/pci/controller/mobiveil/pcie-mobiveil.h index 7308fa4..a40707e 100644 --- a/drivers/pci/controller/mobiveil/pcie-mobiveil.h +++ b/drivers/pci/controller/mobiveil/pcie-mobiveil.h @@ -123,6 +123,10 @@ #define GPEX_BAR_SIZE_UDW 0x4DC #define GPEX_BAR_SELECT 0x4E0 +#define CFG_UNCORRECTABLE_ERROR_SEVERITY 0x10c +#define UNSUPPORTED_REQUEST_ERROR_SHIFT 20 +#define CFG_UNCORRECTABLE_ERROR_MASK 0x108 + /* starting offset of INTX bits in status register */ #define PAB_INTX_START 5 From patchwork Tue Oct 15 08:37:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189859 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C50F513BD for ; Tue, 15 Oct 2019 08:49:36 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A2D0D2089C for ; Tue, 15 Oct 2019 08:49:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="T+vze9AW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A2D0D2089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=zE0Sj4FeOcTReW36WMa/7lk2zfh9o9W1gpfXxMqJZsM=; b=T+vze9AW6L3bJq6J3TShIG56cb jGWA9QSfaGQrebzjGKWnWSNzCSdAwNmbDd39Dm7feYvhcV/bqdnmBzqgfKO3XGZy35e2fjnIsqbwl SAp7u/QvaFUn8DgJ5csdE2ksYHYi1VJ4wHTawf6eNF0d+CxD8z1GV8l3YWVaDJVF9mcFm7gG0ZYJb Qq4j8JdldBa4YHaoZg5TOfNDB5bjhPvSarSoMsTpgSHkSXdMnAnhUJk+6CafdVfM3BZMpPkgK7Chy iP8hbaroMS8P+JyjHrHUtQfK9Z/nBDDOWj95LvGS6t/lhX76rsKai5+4+KkZdSUdAQ5LMg+4g5LfA 1T9pnVXg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIWN-0004v7-Si; Tue, 15 Oct 2019 08:49:35 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIV4-0003dA-An for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:16 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 10B311A0A1F; Tue, 15 Oct 2019 10:48:13 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 383401A07D5; Tue, 15 Oct 2019 10:48:06 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id EC4EF40314; Tue, 15 Oct 2019 16:47:56 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/6] arm64: dts: lx2160a: Add PCIe EP node Date: Tue, 15 Oct 2019 16:37:01 +0800 Message-Id: <20191015083702.21792-6-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014814_678859_58CED839 X-CRM114-Status: UNSURE ( 7.23 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the LX2160A PCIe EP node. Signed-off-by: Xiaowei Bao --- v2: - No change. arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 56 ++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi index f60e5ac..18330df 100644 --- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi @@ -1005,6 +1005,15 @@ status = "disabled"; }; + pcie_ep@3400000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03400000 0x0 0x00100000 + 0x80 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <8>; + status = "disabled"; + }; + pcie@3500000 { compatible = "fsl,lx2160a-pcie"; reg = <0x00 0x03500000 0x0 0x00100000 /* controller registers */ @@ -1032,6 +1041,15 @@ status = "disabled"; }; + pcie_ep@3500000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03500000 0x0 0x00100000 + 0x88 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <8>; + status = "disabled"; + }; + pcie@3600000 { compatible = "fsl,lx2160a-pcie"; reg = <0x00 0x03600000 0x0 0x00100000 /* controller registers */ @@ -1059,6 +1077,16 @@ status = "disabled"; }; + pcie_ep@3600000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03600000 0x0 0x00100000 + 0x90 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <256>; + max-functions = /bits/ 8 <2>; + status = "disabled"; + }; + pcie@3700000 { compatible = "fsl,lx2160a-pcie"; reg = <0x00 0x03700000 0x0 0x00100000 /* controller registers */ @@ -1086,6 +1114,15 @@ status = "disabled"; }; + pcie_ep@3700000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03700000 0x0 0x00100000 + 0x98 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <8>; + status = "disabled"; + }; + pcie@3800000 { compatible = "fsl,lx2160a-pcie"; reg = <0x00 0x03800000 0x0 0x00100000 /* controller registers */ @@ -1113,6 +1150,16 @@ status = "disabled"; }; + pcie_ep@3800000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03800000 0x0 0x00100000 + 0xa0 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <256>; + max-functions = /bits/ 8 <2>; + status = "disabled"; + }; + pcie@3900000 { compatible = "fsl,lx2160a-pcie"; reg = <0x00 0x03900000 0x0 0x00100000 /* controller registers */ @@ -1140,5 +1187,14 @@ status = "disabled"; }; + pcie_ep@3900000 { + compatible = "fsl,lx2160a-pcie-ep"; + reg = <0x00 0x03900000 0x0 0x00100000 + 0xa8 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + apio-wins = <8>; + status = "disabled"; + }; + }; }; From patchwork Tue Oct 15 08:37:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaowei Bao X-Patchwork-Id: 11189861 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5E9DC112B for ; Tue, 15 Oct 2019 08:49:53 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 263CA2089C for ; Tue, 15 Oct 2019 08:49:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="cW/NJF2x" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 263CA2089C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=2M0il3KSbpx7G9xdDUR08NaCz5OQrEsvzcj/MeWTMHQ=; b=cW/NJF2xqVLcyfSCdo9mwanw5Z zdQU2Veo9yBgcZwi5J6DDUWjL9SnyMChQxvTjAKyrUqSYLRQiKGmi+VM1CiNpxS3gvCTpYSb8835N 9ddNTXFJUgkKQjlsdQ3H4Nyopww78NoJhU/yWc0l3cYuJmuHAjtfzYZPZDQxJW7FQ3JgCfIi52BjD CDeJe625rzE6J5w8sC6tVN8G1bPhaMpMppy+GetFTRubtWGrtsc1nXxxTpcVYs6xCJRC3l0XJbZNm x+1rV/uAtHfvBx3bBQ+iDEC1qpV9XZLBmQohtUTA8vRONAFSRwSFwlKp3uI/s0LCdM/V6XWmTZXDk IioU8orQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIWc-00058V-3I; Tue, 15 Oct 2019 08:49:50 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iKIV5-0003eU-Du for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2019 08:48:16 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id E976D1A00B8; Tue, 15 Oct 2019 10:48:13 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 1B1921A0A32; Tue, 15 Oct 2019 10:48:07 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 7046F4031C; Tue, 15 Oct 2019 16:47:58 +0800 (SGT) From: Xiaowei Bao To: Zhiqiang.Hou@nxp.com, bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, leoyang.li@nxp.com, kishon@ti.com, lorenzo.pieralisi@arm.com, Minghuan.Lian@nxp.com, andrew.murray@arm.com, mingkai.hu@nxp.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/6] misc: pci_endpoint_test: Add the layerscape PCIe GEN4 EP device support Date: Tue, 15 Oct 2019 16:37:02 +0800 Message-Id: <20191015083702.21792-7-xiaowei.bao@nxp.com> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20191015083702.21792-1-xiaowei.bao@nxp.com> References: <20191015083702.21792-1-xiaowei.bao@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191015_014815_613450_493107D2 X-CRM114-Status: UNSURE ( 6.86 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [92.121.34.13 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Xiaowei Bao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add the layerscape PCIE GEN4 EP device support in pci_endpoint_test driver. Signed-off-by: Xiaowei Bao --- v2: - No change. drivers/misc/pci_endpoint_test.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index 6e208a0..8b145a7 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -65,6 +65,7 @@ #define PCI_ENDPOINT_TEST_IRQ_NUMBER 0x28 #define PCI_DEVICE_ID_TI_AM654 0xb00c +#define PCI_DEVICE_ID_LX2160A 0x8d80 #define is_am654_pci_dev(pdev) \ ((pdev)->device == PCI_DEVICE_ID_TI_AM654) @@ -793,6 +794,7 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA74x) }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x) }, { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) }, + { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LX2160A) }, { PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654), .driver_data = (kernel_ulong_t)&am654_data