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[24.155.109.49]) by smtp.googlemail.com with ESMTPSA id e186sm354991oia.47.2019.10.28.09.33.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Oct 2019 09:33:47 -0700 (PDT) From: Rob Herring To: Andrew Murray , Bjorn Helgaas , Lorenzo Pieralisi Subject: [PATCH v3 19/25] PCI: of: Add inbound resource parsing to helpers Date: Mon, 28 Oct 2019 11:32:50 -0500 Message-Id: <20191028163256.8004-20-robh@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191028163256.8004-1-robh@kernel.org> References: <20191028163256.8004-1-robh@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191028_093349_418459_96D5EEBD X-CRM114-Status: GOOD ( 17.28 ) 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: Heiko Stuebner , Karthikeyan Mitran , linux-pci@vger.kernel.org, Shawn Lin , Thomas Petazzoni , Toan Le , Will Deacon , Ryder Lee , Michal Simek , Christoph Hellwig , linux-rockchip@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, Linus Walleij , Ray Jui , Hou Zhiqiang , Simon Horman , linux-mediatek@lists.infradead.org, Matthias Brugger , linux-arm-kernel@lists.infradead.org, Scott Branden , Jingoo Han , rfi@lists.rocketboards.org, linux-renesas-soc@vger.kernel.org, Tom Joseph , Srinath Mannam , Gustavo Pimentel , Ley Foon Tan Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Extend devm_of_pci_get_host_bridge_resources() and pci_parse_request_of_pci_ranges() helpers to also parse the inbound addresses from DT 'dma-ranges' and populate a resource list with the translated addresses. This will help ensure 'dma-ranges' is always parsed in a consistent way. Cc: Jingoo Han Cc: Gustavo Pimentel Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Thomas Petazzoni Cc: Will Deacon Cc: Linus Walleij Cc: Toan Le Cc: Ley Foon Tan Cc: Tom Joseph Cc: Ray Jui Cc: Scott Branden Cc: bcm-kernel-feedback-list@broadcom.com Cc: Ryder Lee Cc: Karthikeyan Mitran Cc: Hou Zhiqiang Cc: Simon Horman Cc: Shawn Lin Cc: Heiko Stuebner Cc: Michal Simek Cc: rfi@lists.rocketboards.org Cc: linux-mediatek@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Tested-by: Thomas Petazzoni # for AArdvark Reviewed-by: Andrew Murray Acked-by: Gustavo Pimentel Signed-off-by: Rob Herring --- v2: - Fix crash in INIT_LIST_HEAD when ib_resources is NULL --- .../pci/controller/dwc/pcie-designware-host.c | 3 +- drivers/pci/controller/pci-aardvark.c | 2 +- drivers/pci/controller/pci-ftpci100.c | 3 +- drivers/pci/controller/pci-host-common.c | 2 +- drivers/pci/controller/pci-v3-semi.c | 3 +- drivers/pci/controller/pci-versatile.c | 3 +- drivers/pci/controller/pci-xgene.c | 3 +- drivers/pci/controller/pcie-altera.c | 2 +- drivers/pci/controller/pcie-cadence-host.c | 2 +- drivers/pci/controller/pcie-iproc-platform.c | 3 +- drivers/pci/controller/pcie-mediatek.c | 2 +- drivers/pci/controller/pcie-mobiveil.c | 3 +- drivers/pci/controller/pcie-rcar.c | 3 +- drivers/pci/controller/pcie-rockchip-host.c | 3 +- drivers/pci/controller/pcie-xilinx-nwl.c | 3 +- drivers/pci/controller/pcie-xilinx.c | 3 +- drivers/pci/of.c | 45 ++++++++++++++++++- drivers/pci/pci.h | 8 +++- include/linux/pci.h | 9 ++-- 19 files changed, 82 insertions(+), 23 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c index aeec8b65eb97..f7b1d80c4a0a 100644 --- a/drivers/pci/controller/dwc/pcie-designware-host.c +++ b/drivers/pci/controller/dwc/pcie-designware-host.c @@ -342,7 +342,8 @@ int dw_pcie_host_init(struct pcie_port *pp) if (!bridge) return -ENOMEM; - ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (ret) return ret; diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 9cbeba507f0c..b34eaa2cd762 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -939,7 +939,7 @@ static int advk_pcie_probe(struct platform_device *pdev) } ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, - &bus); + &bridge->dma_ranges, &bus); if (ret) { dev_err(dev, "Failed to parse resources\n"); return ret; diff --git a/drivers/pci/controller/pci-ftpci100.c b/drivers/pci/controller/pci-ftpci100.c index 75603348b88a..66288b94e92d 100644 --- a/drivers/pci/controller/pci-ftpci100.c +++ b/drivers/pci/controller/pci-ftpci100.c @@ -477,7 +477,8 @@ static int faraday_pci_probe(struct platform_device *pdev) if (IS_ERR(p->base)) return PTR_ERR(p->base); - ret = pci_parse_request_of_pci_ranges(dev, &host->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &host->windows, + &host->dma_ranges, NULL); if (ret) return ret; diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c index c8cb9c5188a4..250a3fc80ec6 100644 --- a/drivers/pci/controller/pci-host-common.c +++ b/drivers/pci/controller/pci-host-common.c @@ -27,7 +27,7 @@ static struct pci_config_window *gen_pci_init(struct device *dev, struct pci_config_window *cfg; /* Parse our PCI ranges and request their resources */ - err = pci_parse_request_of_pci_ranges(dev, resources, &bus_range); + err = pci_parse_request_of_pci_ranges(dev, resources, NULL, &bus_range); if (err) return ERR_PTR(err); diff --git a/drivers/pci/controller/pci-v3-semi.c b/drivers/pci/controller/pci-v3-semi.c index 96677520f6c1..2209c7671115 100644 --- a/drivers/pci/controller/pci-v3-semi.c +++ b/drivers/pci/controller/pci-v3-semi.c @@ -776,7 +776,8 @@ static int v3_pci_probe(struct platform_device *pdev) if (IS_ERR(v3->config_base)) return PTR_ERR(v3->config_base); - ret = pci_parse_request_of_pci_ranges(dev, &host->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &host->windows, + &host->dma_ranges, NULL); if (ret) return ret; diff --git a/drivers/pci/controller/pci-versatile.c b/drivers/pci/controller/pci-versatile.c index eae1b859990b..b911359b6d81 100644 --- a/drivers/pci/controller/pci-versatile.c +++ b/drivers/pci/controller/pci-versatile.c @@ -92,7 +92,8 @@ static int versatile_pci_probe(struct platform_device *pdev) if (IS_ERR(versatile_cfg_base[1])) return PTR_ERR(versatile_cfg_base[1]); - ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + NULL, NULL); if (ret) return ret; diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c index 7d0f0395a479..9408269d943d 100644 --- a/drivers/pci/controller/pci-xgene.c +++ b/drivers/pci/controller/pci-xgene.c @@ -627,7 +627,8 @@ static int xgene_pcie_probe(struct platform_device *pdev) if (ret) return ret; - ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (ret) return ret; diff --git a/drivers/pci/controller/pcie-altera.c b/drivers/pci/controller/pcie-altera.c index ba025efeae28..b447c3e4abad 100644 --- a/drivers/pci/controller/pcie-altera.c +++ b/drivers/pci/controller/pcie-altera.c @@ -800,7 +800,7 @@ static int altera_pcie_probe(struct platform_device *pdev) } ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, - NULL); + &bridge->dma_ranges, NULL); if (ret) { dev_err(dev, "Failed add resources\n"); return ret; diff --git a/drivers/pci/controller/pcie-cadence-host.c b/drivers/pci/controller/pcie-cadence-host.c index 97e251090b4f..a8f7a6284c3e 100644 --- a/drivers/pci/controller/pcie-cadence-host.c +++ b/drivers/pci/controller/pcie-cadence-host.c @@ -211,7 +211,7 @@ static int cdns_pcie_host_init(struct device *dev, int err; /* Parse our PCI ranges and request their resources */ - err = pci_parse_request_of_pci_ranges(dev, resources, &bus_range); + err = pci_parse_request_of_pci_ranges(dev, resources, NULL, &bus_range); if (err) return err; diff --git a/drivers/pci/controller/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c index 375d815f7301..ff0a81a632a1 100644 --- a/drivers/pci/controller/pcie-iproc-platform.c +++ b/drivers/pci/controller/pcie-iproc-platform.c @@ -95,7 +95,8 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev) if (IS_ERR(pcie->phy)) return PTR_ERR(pcie->phy); - ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (ret) { dev_err(dev, "unable to get PCI host bridge resources\n"); return ret; diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index d9206a3cd56b..cb982891b22b 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -1034,7 +1034,7 @@ static int mtk_pcie_setup(struct mtk_pcie *pcie) int err; err = pci_parse_request_of_pci_ranges(dev, windows, - &bus); + &host->dma_ranges, &bus); if (err) return err; diff --git a/drivers/pci/controller/pcie-mobiveil.c b/drivers/pci/controller/pcie-mobiveil.c index 4eab8624ce4d..257ba49c177c 100644 --- a/drivers/pci/controller/pcie-mobiveil.c +++ b/drivers/pci/controller/pcie-mobiveil.c @@ -875,7 +875,8 @@ static int mobiveil_pcie_probe(struct platform_device *pdev) } /* parse the host bridge base addresses from the device tree file */ - ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (ret) { dev_err(dev, "Getting bridge resources failed\n"); return ret; diff --git a/drivers/pci/controller/pcie-rcar.c b/drivers/pci/controller/pcie-rcar.c index f6a669a9af41..b8d6e86a5539 100644 --- a/drivers/pci/controller/pcie-rcar.c +++ b/drivers/pci/controller/pcie-rcar.c @@ -1138,7 +1138,8 @@ static int rcar_pcie_probe(struct platform_device *pdev) pcie->dev = dev; platform_set_drvdata(pdev, pcie); - err = pci_parse_request_of_pci_ranges(dev, &pcie->resources, NULL); + err = pci_parse_request_of_pci_ranges(dev, &pcie->resources, + &bridge->dma_ranges, NULL); if (err) goto err_free_bridge; diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index f375e55ea02e..ee83f8494ee9 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -1004,7 +1004,8 @@ static int rockchip_pcie_probe(struct platform_device *pdev) if (err < 0) goto err_deinit_port; - err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, &bus_res); + err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, &bus_res); if (err) goto err_remove_irq_domain; diff --git a/drivers/pci/controller/pcie-xilinx-nwl.c b/drivers/pci/controller/pcie-xilinx-nwl.c index e135a4b60489..9bd1427f2fd6 100644 --- a/drivers/pci/controller/pcie-xilinx-nwl.c +++ b/drivers/pci/controller/pcie-xilinx-nwl.c @@ -843,7 +843,8 @@ static int nwl_pcie_probe(struct platform_device *pdev) return err; } - err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (err) { dev_err(dev, "Getting bridge resources failed\n"); return err; diff --git a/drivers/pci/controller/pcie-xilinx.c b/drivers/pci/controller/pcie-xilinx.c index 257702288787..98e55297815b 100644 --- a/drivers/pci/controller/pcie-xilinx.c +++ b/drivers/pci/controller/pcie-xilinx.c @@ -645,7 +645,8 @@ static int xilinx_pcie_probe(struct platform_device *pdev) return err; } - err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, NULL); + err = pci_parse_request_of_pci_ranges(dev, &bridge->windows, + &bridge->dma_ranges, NULL); if (err) { dev_err(dev, "Getting bridge resources failed\n"); return err; diff --git a/drivers/pci/of.c b/drivers/pci/of.c index f3da49a31db4..0b1e4623dfcf 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -257,7 +257,9 @@ EXPORT_SYMBOL_GPL(of_pci_check_probe_only); */ int devm_of_pci_get_host_bridge_resources(struct device *dev, unsigned char busno, unsigned char bus_max, - struct list_head *resources, resource_size_t *io_base) + struct list_head *resources, + struct list_head *ib_resources, + resource_size_t *io_base) { struct device_node *dev_node = dev->of_node; struct resource *res, tmp_res; @@ -340,6 +342,42 @@ int devm_of_pci_get_host_bridge_resources(struct device *dev, pci_add_resource_offset(resources, res, res->start - range.pci_addr); } + /* Check for dma-ranges property */ + if (!ib_resources) + return 0; + err = of_pci_dma_range_parser_init(&parser, dev_node); + if (err) + return 0; + + dev_dbg(dev, "Parsing dma-ranges property...\n"); + for_each_of_pci_range(&parser, &range) { + /* + * If we failed translation or got a zero-sized region + * then skip this range + */ + if (((range.flags & IORESOURCE_TYPE_BITS) != IORESOURCE_MEM) || + range.cpu_addr == OF_BAD_ADDR || range.size == 0) + continue; + + dev_info(dev, "IB MEM %#010llx..%#010llx -> %#010llx\n", + range.cpu_addr, + range.cpu_addr + range.size - 1, range.pci_addr); + + + err = of_pci_range_to_resource(&range, dev_node, &tmp_res); + if (err) + continue; + + res = devm_kmemdup(dev, &tmp_res, sizeof(tmp_res), GFP_KERNEL); + if (!res) { + err = -ENOMEM; + goto failed; + } + + pci_add_resource_offset(ib_resources, res, + res->start - range.pci_addr); + } + return 0; failed: @@ -482,6 +520,7 @@ EXPORT_SYMBOL_GPL(of_irq_parse_and_map_pci); int pci_parse_request_of_pci_ranges(struct device *dev, struct list_head *resources, + struct list_head *ib_resources, struct resource **bus_range) { int err, res_valid = 0; @@ -489,8 +528,10 @@ int pci_parse_request_of_pci_ranges(struct device *dev, struct resource_entry *win, *tmp; INIT_LIST_HEAD(resources); + if (ib_resources) + INIT_LIST_HEAD(ib_resources); err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, resources, - &iobase); + ib_resources, &iobase); if (err) return err; diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 3f6947ee3324..6692c4fe4290 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -633,11 +633,15 @@ static inline void pci_release_bus_of_node(struct pci_bus *bus) { } #if defined(CONFIG_OF_ADDRESS) int devm_of_pci_get_host_bridge_resources(struct device *dev, unsigned char busno, unsigned char bus_max, - struct list_head *resources, resource_size_t *io_base); + struct list_head *resources, + struct list_head *ib_resources, + resource_size_t *io_base); #else static inline int devm_of_pci_get_host_bridge_resources(struct device *dev, unsigned char busno, unsigned char bus_max, - struct list_head *resources, resource_size_t *io_base) + struct list_head *resources, + struct list_head *ib_resources, + resource_size_t *io_base) { return -EINVAL; } diff --git a/include/linux/pci.h b/include/linux/pci.h index f9088c89a534..5cb94916eaa1 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2278,6 +2278,7 @@ struct irq_domain; struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus); int pci_parse_request_of_pci_ranges(struct device *dev, struct list_head *resources, + struct list_head *ib_resources, struct resource **bus_range); /* Arch may override this (weak) */ @@ -2286,9 +2287,11 @@ struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); #else /* CONFIG_OF */ static inline struct irq_domain * pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; } -static inline int pci_parse_request_of_pci_ranges(struct device *dev, - struct list_head *resources, - struct resource **bus_range) +static inline int +pci_parse_request_of_pci_ranges(struct device *dev, + struct list_head *resources, + struct list_head *ib_resources, + struct resource **bus_range) { return -EINVAL; } -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel