From patchwork Sun Jan 3 22:06:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Phil Sutter X-Patchwork-Id: 1421964 X-Patchwork-Delegate: sr@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=nwl.cc Received: from phobos.denx.de (unknown [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4D8CVt1S09z9sVR for ; Mon, 4 Jan 2021 09:05:24 +1100 (AEDT) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 6513C82652; Sun, 3 Jan 2021 23:04:43 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=nwl.cc Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: by phobos.denx.de (Postfix, from userid 109) id 32DEE82483; Sun, 3 Jan 2021 23:04:39 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from orbyte.nwl.cc (orbyte.nwl.cc [IPv6:2001:41d0:e:133a::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 14FFF823D3 for ; Sun, 3 Jan 2021 23:04:34 +0100 (CET) Authentication-Results: phobos.denx.de; dmarc=none (p=none dis=none) header.from=nwl.cc Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=phil@nwl.cc Received: from localhost ([::1]:60814 helo=base) by orbyte.nwl.cc with esmtp (Exim 4.94) (envelope-from ) id 1kwBUH-0007cq-Ig; Sun, 03 Jan 2021 23:04:33 +0100 From: Phil Sutter To: u-boot@lists.denx.de Cc: Stefan Roese Subject: [PATCH 3/3] pci: pci_mvebu: Define an IO region as well Date: Sun, 3 Jan 2021 23:06:46 +0100 Message-Id: <20210103220646.26707-4-phil@nwl.cc> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210103220646.26707-1-phil@nwl.cc> References: <20210103220646.26707-1-phil@nwl.cc> MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean Configure an IO region and window for PNP identical to how MEM region is set up. Linux does this only if the DT defines a pcie-io-aperture property for the SOC, but since all supported boards do this should not be needed. Signed-off-by: Phil Sutter Reviewed-by: Stefan Roese --- drivers/pci/pci_mvebu.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c index c9afe7515014d..9528e7c40ecfe 100644 --- a/drivers/pci/pci_mvebu.c +++ b/drivers/pci/pci_mvebu.c @@ -73,6 +73,7 @@ struct mvebu_pcie { void __iomem *membase; struct resource mem; void __iomem *iobase; + struct resource io; u32 port; u32 lane; int devfn; @@ -81,6 +82,8 @@ struct mvebu_pcie { char name[16]; unsigned int mem_target; unsigned int mem_attr; + unsigned int io_target; + unsigned int io_attr; }; /* @@ -90,6 +93,7 @@ struct mvebu_pcie { */ static void __iomem *mvebu_pcie_membase = (void __iomem *)MBUS_PCI_MEM_BASE; #define PCIE_MEM_SIZE (128 << 20) +static void __iomem *mvebu_pcie_iobase = (void __iomem *)MBUS_PCI_IO_BASE; static inline bool mvebu_pcie_link_up(struct mvebu_pcie *pcie) { @@ -306,12 +310,24 @@ static int mvebu_pcie_probe(struct udevice *dev) (u32)pcie->mem.start, PCIE_MEM_SIZE); } + pcie->io.start = (u32)mvebu_pcie_iobase; + pcie->io.end = pcie->io.start + MBUS_PCI_IO_SIZE - 1; + mvebu_pcie_iobase += MBUS_PCI_IO_SIZE; + + if (mvebu_mbus_add_window_by_id(pcie->io_target, pcie->io_attr, + (phys_addr_t)pcie->io.start, + MBUS_PCI_IO_SIZE)) { + printf("PCIe unable to add mbus window for IO at %08x+%08x\n", + (u32)pcie->io.start, MBUS_PCI_IO_SIZE); + } + /* Setup windows and configure host bridge */ mvebu_pcie_setup_wins(pcie); /* Master + slave enable. */ reg = readl(pcie->base + PCIE_CMD_OFF); reg |= PCI_COMMAND_MEMORY; + reg |= PCI_COMMAND_IO; reg |= PCI_COMMAND_MASTER; reg |= BIT(10); /* disable interrupts */ writel(reg, pcie->base + PCIE_CMD_OFF); @@ -323,7 +339,9 @@ static int mvebu_pcie_probe(struct udevice *dev) 0, 0, gd->ram_size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); - hose->region_count = 2; + pci_set_region(hose->regions + 2, pcie->io.start, + pcie->io.start, MBUS_PCI_IO_SIZE, PCI_REGION_IO); + hose->region_count = 3; /* Set BAR0 to internal registers */ writel(SOC_REGS_PHY_BASE, pcie->base + PCIE_BAR_LO_OFF(0)); @@ -442,6 +460,14 @@ static int mvebu_pcie_ofdata_to_platdata(struct udevice *dev) goto err; } + ret = mvebu_get_tgt_attr(dev_ofnode(dev->parent), pcie->devfn, + IORESOURCE_IO, + &pcie->io_target, &pcie->io_attr); + if (ret < 0) { + printf("%s: cannot get tgt/attr for IO window\n", pcie->name); + goto err; + } + /* Parse PCIe controller register base from DT */ ret = mvebu_pcie_port_parse_dt(dev_ofnode(dev), pcie); if (ret < 0)