From patchwork Wed Dec 6 08:37:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Smlhbmp1biBXYW5nICjnjovlu7rlhpsp?= X-Patchwork-Id: 13481270 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 8953EC10DC1 for ; Wed, 6 Dec 2023 08:38:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=73koCofZDqmsIg3RWsQNbfp+mHALtOtkTxc6gTpLsjU=; b=I7LtzcLIKfFflJ8N5/yi1kjzAU zwdJ5qgMB1waFWzCY6pa0DDzlugUYEb1bPho1ZHV0ntGf0AS+57JBKus9jPkNTzyLT4tRXm/H9jMH Pm5X3i6skFTdtkAVXIYVAzzbP41ranYeTpm/a4eDnkIwkfflUcLnjN0iPfqxiUZW7CLysHP8OhQWH UEjWDgwUXyXKsdSVQQ9mBA4EOC6oA9Txf3F8gGdZNDCUeRkKdfTgrrAyb0n/5o/+oOEwueu0bN/ru izKsUCrNVB5slehVUadE2O0RoZeFQm1dqfShCE+BzRizVJbB8q+PsJUvwRgZbjjJF9KcuJHcS9vPv GDQT9jLw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rAnQG-009RXy-0u; Wed, 06 Dec 2023 08:38:24 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rAnQE-009RWl-14; Wed, 06 Dec 2023 08:38:23 +0000 X-UUID: cd1c4044941211ee9b09ad09c76753c8-20231206 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=73koCofZDqmsIg3RWsQNbfp+mHALtOtkTxc6gTpLsjU=; b=u3hpMb9B6QxC5UjskNllsQoUz1eEy4Ss+/uIrXwarZ3h26wQNZl/YJWJg0KlCW41Fb0HsDI4LgPNc6rN/ZwLTWDwRDy9vd6f5A0EUSW4kVNyHlV+3x6zFFGDeet+oZLR9FhOmn9+NoBa9Q5QgG7fTYxgfSfysl7cGBjtANhCHak=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.34,REQID:229d5ce3-0b2e-4a1e-b481-29d99f7b5571,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:abefa75,CLOUDID:3dc1e060-c89d-4129-91cb-8ebfae4653fc,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR: NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0,NGT X-CID-BAS: 0,NGT,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULN X-UUID: cd1c4044941211ee9b09ad09c76753c8-20231206 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 152221310; Wed, 06 Dec 2023 01:38:16 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Wed, 6 Dec 2023 16:38:13 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Wed, 6 Dec 2023 16:38:13 +0800 From: Jianjun Wang To: Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas , Matthias Brugger , AngeloGioacchino Del Regno CC: Ryder Lee , Jianjun Wang , , , , , , , , , Subject: [PATCH 1/2] PCI: mediatek: Allocate MSI address with dmam_alloc_coherent Date: Wed, 6 Dec 2023 16:37:52 +0800 Message-ID: <20231206083753.18186-2-jianjun.wang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231206083753.18186-1-jianjun.wang@mediatek.com> References: <20231206083753.18186-1-jianjun.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231206_003822_376123_AF94B81D X-CRM114-Status: GOOD ( 14.61 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Use 'dmam_alloc_coherent' to allocate the MSI address, instead of using 'virt_to_phys'. Signed-off-by: Jianjun Wang --- drivers/pci/controller/pcie-mediatek.c | 29 ++++++++++++++++++-------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 66a8f73296fc..b080f7ca6da0 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -178,6 +178,7 @@ struct mtk_pcie_soc { * @phy: pointer to PHY control block * @slot: port slot * @irq: GIC irq + * @msg_addr: MSI message address * @irq_domain: legacy INTx IRQ domain * @inner_domain: inner IRQ domain * @msi_domain: MSI IRQ domain @@ -198,6 +199,7 @@ struct mtk_pcie_port { struct phy *phy; u32 slot; int irq; + dma_addr_t msg_addr; struct irq_domain *irq_domain; struct irq_domain *inner_domain; struct irq_domain *msi_domain; @@ -394,12 +396,10 @@ static struct pci_ops mtk_pcie_ops_v2 = { static void mtk_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) { struct mtk_pcie_port *port = irq_data_get_irq_chip_data(data); - phys_addr_t addr; /* MT2712/MT7622 only support 32-bit MSI addresses */ - addr = virt_to_phys(port->base + PCIE_MSI_VECTOR); msg->address_hi = 0; - msg->address_lo = lower_32_bits(addr); + msg->address_lo = lower_32_bits(port->msg_addr); msg->data = data->hwirq; @@ -515,18 +515,26 @@ static int mtk_pcie_allocate_msi_domains(struct mtk_pcie_port *port) return 0; } -static void mtk_pcie_enable_msi(struct mtk_pcie_port *port) +static int mtk_pcie_enable_msi(struct mtk_pcie_port *port) { u32 val; - phys_addr_t msg_addr; + void *msi_vaddr; - msg_addr = virt_to_phys(port->base + PCIE_MSI_VECTOR); - val = lower_32_bits(msg_addr); + msi_vaddr = dmam_alloc_coherent(port->pcie->dev, sizeof(dma_addr_t), &port->msg_addr, + GFP_KERNEL); + if (!msi_vaddr) { + dev_err(port->pcie->dev, "failed to alloc and map MSI data\n"); + return -ENOMEM; + } + + val = lower_32_bits(port->msg_addr); writel(val, port->base + PCIE_IMSI_ADDR); val = readl(port->base + PCIE_INT_MASK); val &= ~MSI_MASK; writel(val, port->base + PCIE_INT_MASK); + + return 0; } static void mtk_pcie_irq_teardown(struct mtk_pcie *pcie) @@ -732,8 +740,11 @@ static int mtk_pcie_startup_port_v2(struct mtk_pcie_port *port) val &= ~INTX_MASK; writel(val, port->base + PCIE_INT_MASK); - if (IS_ENABLED(CONFIG_PCI_MSI)) - mtk_pcie_enable_msi(port); + if (IS_ENABLED(CONFIG_PCI_MSI)) { + err = mtk_pcie_enable_msi(port); + if (err) + return err; + } /* Set AHB to PCIe translation windows */ val = lower_32_bits(mem->start) | From patchwork Wed Dec 6 08:37:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Smlhbmp1biBXYW5nICjnjovlu7rlhpsp?= X-Patchwork-Id: 13481271 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 4BAC0C10F04 for ; 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Signed-off-by: Jianjun Wang --- drivers/pci/controller/pcie-mediatek-gen3.c | 30 +++++++++++---------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index e0e27645fdf4..0b1b5c8e5288 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -108,7 +108,7 @@ */ struct mtk_msi_set { void __iomem *base; - phys_addr_t msg_addr; + dma_addr_t msg_addr; u32 saved_irq_state; }; @@ -116,7 +116,6 @@ struct mtk_msi_set { * struct mtk_gen3_pcie - PCIe port information * @dev: pointer to PCIe device * @base: IO mapped register base - * @reg_base: physical register base * @mac_reset: MAC reset control * @phy_reset: PHY reset control * @phy: PHY controller block @@ -135,7 +134,6 @@ struct mtk_msi_set { struct mtk_gen3_pcie { struct device *dev; void __iomem *base; - phys_addr_t reg_base; struct reset_control *mac_reset; struct reset_control *phy_reset; struct phy *phy; @@ -278,18 +276,24 @@ static int mtk_pcie_set_trans_table(struct mtk_gen3_pcie *pcie, return 0; } -static void mtk_pcie_enable_msi(struct mtk_gen3_pcie *pcie) +static int mtk_pcie_enable_msi(struct mtk_gen3_pcie *pcie) { int i; u32 val; + void *msi_vaddr; for (i = 0; i < PCIE_MSI_SET_NUM; i++) { struct mtk_msi_set *msi_set = &pcie->msi_sets[i]; msi_set->base = pcie->base + PCIE_MSI_SET_BASE_REG + i * PCIE_MSI_SET_OFFSET; - msi_set->msg_addr = pcie->reg_base + PCIE_MSI_SET_BASE_REG + - i * PCIE_MSI_SET_OFFSET; + + msi_vaddr = dmam_alloc_coherent(pcie->dev, sizeof(dma_addr_t), &msi_set->msg_addr, + GFP_KERNEL); + if (!msi_vaddr) { + dev_err(pcie->dev, "failed to alloc and map MSI data for set %d\n", i); + return -ENOMEM; + } /* Configure the MSI capture address */ writel_relaxed(lower_32_bits(msi_set->msg_addr), msi_set->base); @@ -305,6 +309,8 @@ static void mtk_pcie_enable_msi(struct mtk_gen3_pcie *pcie) val = readl_relaxed(pcie->base + PCIE_INT_ENABLE_REG); val |= PCIE_MSI_ENABLE; writel_relaxed(val, pcie->base + PCIE_INT_ENABLE_REG); + + return 0; } static int mtk_pcie_startup_port(struct mtk_gen3_pcie *pcie) @@ -371,7 +377,9 @@ static int mtk_pcie_startup_port(struct mtk_gen3_pcie *pcie) return err; } - mtk_pcie_enable_msi(pcie); + err = mtk_pcie_enable_msi(pcie); + if (err) + return err; /* Set PCIe translation windows */ resource_list_for_each_entry(entry, &host->windows) { @@ -762,20 +770,14 @@ static int mtk_pcie_parse_port(struct mtk_gen3_pcie *pcie) { struct device *dev = pcie->dev; struct platform_device *pdev = to_platform_device(dev); - struct resource *regs; int ret; - regs = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pcie-mac"); - if (!regs) - return -EINVAL; - pcie->base = devm_ioremap_resource(dev, regs); + pcie->base = devm_platform_ioremap_resource_byname(pdev, "pcie-mac"); if (IS_ERR(pcie->base)) { dev_err(dev, "failed to map register base\n"); return PTR_ERR(pcie->base); } - pcie->reg_base = regs->start; - pcie->phy_reset = devm_reset_control_get_optional_exclusive(dev, "phy"); if (IS_ERR(pcie->phy_reset)) { ret = PTR_ERR(pcie->phy_reset);