From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9C9DC43381 for ; Thu, 21 Feb 2019 10:20:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC25120855 for ; Thu, 21 Feb 2019 10:20:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="QwIgfyjF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728256AbfBUKUX (ORCPT ); Thu, 21 Feb 2019 05:20:23 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:48200 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727930AbfBUKTC (ORCPT ); Thu, 21 Feb 2019 05:19:02 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x1LAIm5n124780; Thu, 21 Feb 2019 04:18:48 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1550744328; bh=Z1JHg2Qq2FnL4xEwwPeYK1OkUFNj+u1JrItWYv+o0WU=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=QwIgfyjFNImjRWl+aQ3E+dEF1ntPS5Y9KIJNeTVLbbdqSnTT5y9X0Yd6SUwaDI6wU /ST78MA0ZUGqKtpNX38Z10JwOARnj/t45T0IGFgm0AWOnT+vqTZy2syV9UT4FXG82U a9r9qnr2VXf8w3xlC6h6qwTU+Dlhg+GpPSPnNMpI= Received: from DFLE106.ent.ti.com (dfle106.ent.ti.com [10.64.6.27]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x1LAIlLO052926 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 21 Feb 2019 04:18:48 -0600 Received: from DFLE109.ent.ti.com (10.64.6.30) by DFLE106.ent.ti.com (10.64.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1591.10; Thu, 21 Feb 2019 04:18:47 -0600 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1591.10 via Frontend Transport; Thu, 21 Feb 2019 04:18:47 -0600 Received: from a0393678ub.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id x1LAIORM022198; Thu, 21 Feb 2019 04:18:45 -0600 From: Kishon Vijay Abraham I To: Murali Karicheri , Lorenzo Pieralisi CC: Kishon Vijay Abraham I , Bjorn Helgaas , Jingoo Han , Gustavo Pimentel , , , Subject: [PATCH v4 7/9] PCI: keystone: Use Keystone specific msi_irq_chip Date: Thu, 21 Feb 2019 15:45:16 +0530 Message-ID: <20190221101518.22604-8-kishon@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190221101518.22604-1-kishon@ti.com> References: <20190221101518.22604-1-kishon@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use Keystone specific msi_irq_chip to configure the MSI controller logic in the PCIe keystone wrapper instead of using the default Designware msi_irq chip (dw_pci_msi_bottom_irq_chip) with callback functions for configuring the Keystone MSI controller. This will help to remove Keystone specific callback functions added in dw_pcie_host_ops. Move the default msi_irq_chip assignment to dw_pcie_host_init since platforms that doesn't use the default msi_irq_chip will assign msi_irq_chip in msi_host_init() callback. Signed-off-by: Kishon Vijay Abraham I --- drivers/pci/controller/dwc/pci-keystone.c | 96 ++++++++++++++----- .../pci/controller/dwc/pcie-designware-host.c | 5 +- 2 files changed, 74 insertions(+), 27 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c index 16feab853a7b..88a60e1a1486 100644 --- a/drivers/pci/controller/dwc/pci-keystone.c +++ b/drivers/pci/controller/dwc/pci-keystone.c @@ -104,14 +104,6 @@ struct keystone_pcie { struct resource app; }; -static phys_addr_t ks_pcie_get_msi_addr(struct pcie_port *pp) -{ - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct keystone_pcie *ks_pcie = to_keystone_pcie(pci); - - return ks_pcie->app.start + MSI_IRQ; -} - static u32 ks_pcie_app_readl(struct keystone_pcie *ks_pcie, u32 offset) { return readl(ks_pcie->va_app_base + offset); @@ -123,11 +115,14 @@ static void ks_pcie_app_writel(struct keystone_pcie *ks_pcie, u32 offset, writel(val, ks_pcie->va_app_base + offset); } -static void ks_pcie_msi_irq_ack(int irq, struct pcie_port *pp) +static void ks_pcie_msi_irq_ack(struct irq_data *data) { - u32 reg_offset, bit_pos; + struct pcie_port *pp = irq_data_get_irq_chip_data(data); struct keystone_pcie *ks_pcie; + u32 irq = data->hwirq; struct dw_pcie *pci; + u32 reg_offset; + u32 bit_pos; pci = to_dw_pcie_from_pp(pp); ks_pcie = to_keystone_pcie(pci); @@ -140,34 +135,91 @@ static void ks_pcie_msi_irq_ack(int irq, struct pcie_port *pp) ks_pcie_app_writel(ks_pcie, IRQ_EOI, reg_offset + MSI_IRQ_OFFSET); } -static void ks_pcie_msi_set_irq(struct pcie_port *pp, int irq) +static void ks_pcie_compose_msi_msg(struct irq_data *data, struct msi_msg *msg) { - u32 reg_offset, bit_pos; - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct keystone_pcie *ks_pcie = to_keystone_pcie(pci); + struct pcie_port *pp = irq_data_get_irq_chip_data(data); + struct keystone_pcie *ks_pcie; + struct dw_pcie *pci; + u64 msi_target; + + pci = to_dw_pcie_from_pp(pp); + ks_pcie = to_keystone_pcie(pci); + + msi_target = ks_pcie->app.start + MSI_IRQ; + msg->address_lo = lower_32_bits(msi_target); + msg->address_hi = upper_32_bits(msi_target); + msg->data = data->hwirq; + + dev_dbg(pci->dev, "msi#%d address_hi %#x address_lo %#x\n", + (int)data->hwirq, msg->address_hi, msg->address_lo); +} + +static int ks_pcie_msi_set_affinity(struct irq_data *irq_data, + const struct cpumask *mask, bool force) +{ + return -EINVAL; +} + +static void ks_pcie_msi_mask(struct irq_data *data) +{ + struct pcie_port *pp = irq_data_get_irq_chip_data(data); + struct keystone_pcie *ks_pcie; + u32 irq = data->hwirq; + struct dw_pcie *pci; + unsigned long flags; + u32 reg_offset; + u32 bit_pos; + + raw_spin_lock_irqsave(&pp->lock, flags); + + pci = to_dw_pcie_from_pp(pp); + ks_pcie = to_keystone_pcie(pci); reg_offset = irq % 8; bit_pos = irq >> 3; - ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_SET(reg_offset), + ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_CLR(reg_offset), BIT(bit_pos)); + + raw_spin_unlock_irqrestore(&pp->lock, flags); } -static void ks_pcie_msi_clear_irq(struct pcie_port *pp, int irq) +static void ks_pcie_msi_unmask(struct irq_data *data) { - u32 reg_offset, bit_pos; - struct dw_pcie *pci = to_dw_pcie_from_pp(pp); - struct keystone_pcie *ks_pcie = to_keystone_pcie(pci); + struct pcie_port *pp = irq_data_get_irq_chip_data(data); + struct keystone_pcie *ks_pcie; + u32 irq = data->hwirq; + struct dw_pcie *pci; + unsigned long flags; + u32 reg_offset; + u32 bit_pos; + + raw_spin_lock_irqsave(&pp->lock, flags); + + pci = to_dw_pcie_from_pp(pp); + ks_pcie = to_keystone_pcie(pci); reg_offset = irq % 8; bit_pos = irq >> 3; - ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_CLR(reg_offset), + ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_SET(reg_offset), BIT(bit_pos)); + + raw_spin_unlock_irqrestore(&pp->lock, flags); } +static struct irq_chip ks_pcie_msi_irq_chip = { + .name = "KEYSTONE-PCI-MSI", + .irq_ack = ks_pcie_msi_irq_ack, + .irq_compose_msi_msg = ks_pcie_compose_msi_msg, + .irq_set_affinity = ks_pcie_msi_set_affinity, + .irq_mask = ks_pcie_msi_mask, + .irq_unmask = ks_pcie_msi_unmask, +}; + static int ks_pcie_msi_host_init(struct pcie_port *pp) { + pp->msi_irq_chip = &ks_pcie_msi_irq_chip; return dw_pcie_allocate_domains(pp); } @@ -816,11 +868,7 @@ static const struct dw_pcie_host_ops ks_pcie_host_ops = { .rd_other_conf = ks_pcie_rd_other_conf, .wr_other_conf = ks_pcie_wr_other_conf, .host_init = ks_pcie_host_init, - .msi_set_irq = ks_pcie_msi_set_irq, - .msi_clear_irq = ks_pcie_msi_clear_irq, - .get_msi_addr = ks_pcie_get_msi_addr, .msi_host_init = ks_pcie_msi_host_init, - .msi_irq_ack = ks_pcie_msi_irq_ack, .scan_bus = ks_pcie_v3_65_scan_bus, }; diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index 042de09b0451..72cfedce5af1 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -277,9 +277,6 @@ int dw_pcie_allocate_domains(struct pcie_port *pp) struct dw_pcie *pci = to_dw_pcie_from_pp(pp); struct fwnode_handle *fwnode = of_node_to_fwnode(pci->dev->of_node); - if (!pp->msi_irq_chip) - pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip; - pp->irq_domain = irq_domain_create_linear(fwnode, pp->num_vectors, &dw_pcie_msi_domain_ops, pp); if (!pp->irq_domain) { @@ -462,6 +459,8 @@ int dw_pcie_host_init(struct pcie_port *pp) } if (!pp->ops->msi_host_init) { + pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip; + ret = dw_pcie_allocate_domains(pp); if (ret) goto error; -- 2.17.1