On Tue, Sep 24, 2019 at 04:46:25PM -0500, Rob Herring wrote:
> 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 <jingoohan1@xxxxxxxxx>
> Cc: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
> Cc: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> Cc: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx>
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
> Cc: Toan Le <toan@xxxxxxxxxxxxxxxxxxxxxx>
> Cc: Ley Foon Tan <lftan@xxxxxxxxxx>
> Cc: Tom Joseph <tjoseph@xxxxxxxxxxx>
> Cc: Ray Jui <rjui@xxxxxxxxxxxx>
> Cc: Scott Branden <sbranden@xxxxxxxxxxxx>
> Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx
> Cc: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
> Cc: Karthikeyan Mitran <m.karthikeyan@xxxxxxxxxxxxxx>
> Cc: Hou Zhiqiang <Zhiqiang.Hou@xxxxxxx>
> Cc: Simon Horman <horms@xxxxxxxxxxxx>
> Cc: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
> Cc: Heiko Stuebner <heiko@xxxxxxxxx>
> Cc: Michal Simek <michal.simek@xxxxxxxxxx>
> Cc: rfi@xxxxxxxxxxxxxxxxxxxxxx
> Cc: linux-mediatek@xxxxxxxxxxxxxxxxxxx
> Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
> Cc: linux-rockchip@xxxxxxxxxxxxxxxxxxx
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx>
> .../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 | 2 +-
> drivers/pci/controller/pci-versatile.c | 2 +-
> drivers/pci/controller/pci-xgene.c | 1 +
> drivers/pci/controller/pcie-altera.c | 2 +-
> drivers/pci/controller/pcie-cadence-host.c | 2 +-
> drivers/pci/controller/pcie-iproc-platform.c | 1 +
> drivers/pci/controller/pcie-mediatek.c | 2 +-
> drivers/pci/controller/pcie-mobiveil.c | 4 +-
> drivers/pci/controller/pcie-rcar.c | 3 +-
> drivers/pci/controller/pcie-rockchip-host.c | 3 +-
> drivers/pci/controller/pcie-xilinx-nwl.c | 2 +-
> drivers/pci/controller/pcie-xilinx.c | 2 +-
> drivers/pci/of.c | 44 ++++++++++++++++++-
> drivers/pci/pci.h | 8 +++-
> include/linux/pci.h | 2 +
> 19 files changed, 72 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index f93252d0da5b..0743ae64bb0f 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)
> return -ENOMEM;
>
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> - &bridge->windows, &pp->io_base);
> + &bridge->windows, &bridge->dma_ranges,
> + &pp->io_base);
> if (ret)
> return ret;
>
> diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c
> index ff3af3d34028..c00b391529f3 100644
> --- a/drivers/pci/controller/pci-aardvark.c
> +++ b/drivers/pci/controller/pci-aardvark.c
> @@ -940,7 +940,7 @@ static int advk_pcie_probe(struct platform_device *pdev)
> }
>
> ret = pci_parse_request_of_pci_ranges(dev, &pcie->resources,
> - &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 bf5ece5d9291..3e07a8203736 100644
> --- a/drivers/pci/controller/pci-ftpci100.c
> +++ b/drivers/pci/controller/pci-ftpci100.c
> @@ -481,7 +481,8 @@ static int faraday_pci_probe(struct platform_device *pdev)
> return PTR_ERR(p->base);
>
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> - &res, &io_base);
> + &res, &host->dma_ranges,
> + &io_base);
> if (ret)
> return ret;
>
> diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
> index c742881b5061..183381c19ee8 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 d219404bad92..090df766faf9 100644
> --- a/drivers/pci/controller/pci-v3-semi.c
> +++ b/drivers/pci/controller/pci-v3-semi.c
> @@ -794,7 +794,7 @@ static int v3_pci_probe(struct platform_device *pdev)
> return PTR_ERR(v3->config_base);
>
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
> - &io_base);
> + &host->dma_ranges, &io_base);
> if (ret)
> return ret;
>
> diff --git a/drivers/pci/controller/pci-versatile.c b/drivers/pci/controller/pci-versatile.c
> index 237b1abb26f2..211159f54b4a 100644
> --- a/drivers/pci/controller/pci-versatile.c
> +++ b/drivers/pci/controller/pci-versatile.c
> @@ -93,7 +93,7 @@ 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, &pci_res, NULL);
> + ret = pci_parse_request_of_pci_ranges(dev, &pci_res, NULL, NULL);
> if (ret)
> return ret;
>
> diff --git a/drivers/pci/controller/pci-xgene.c b/drivers/pci/controller/pci-xgene.c
> index ffda3e8b4742..11f27c42c06a 100644
> --- a/drivers/pci/controller/pci-xgene.c
> +++ b/drivers/pci/controller/pci-xgene.c
> @@ -635,6 +635,7 @@ static int xgene_pcie_probe(struct platform_device *pdev)
> return ret;
>
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
> + &bridge->dma_ranges,
> &iobase);
> if (ret)
> return ret;
> diff --git a/drivers/pci/controller/pcie-altera.c b/drivers/pci/controller/pcie-altera.c
> index 2ed00babff5a..fde6a3b16fb9 100644
> --- a/drivers/pci/controller/pcie-altera.c
> +++ b/drivers/pci/controller/pcie-altera.c
> @@ -801,7 +801,7 @@ static int altera_pcie_probe(struct platform_device *pdev)
> }
>
> ret = pci_parse_request_of_pci_ranges(dev, &pcie->resources,
> - 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 5a3550b6bb29..62eee2d17f43 100644
> --- a/drivers/pci/controller/pcie-iproc-platform.c
> +++ b/drivers/pci/controller/pcie-iproc-platform.c
> @@ -101,6 +101,7 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
> }
>
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &resources,
> + &bridge->dma_ranges,
> &iobase);
> if (ret) {
> dev_err(dev, "unable to get PCI host bridge resources\n");
> diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
> index cea4112b5309..f3996eed152d 100644
> --- a/drivers/pci/controller/pcie-mediatek.c
> +++ b/drivers/pci/controller/pcie-mediatek.c
> @@ -1032,7 +1032,7 @@ 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 672e633601c7..93064faaa656 100644
> --- a/drivers/pci/controller/pcie-mobiveil.c
> +++ b/drivers/pci/controller/pcie-mobiveil.c
> @@ -875,7 +875,9 @@ static int mobiveil_pcie_probe(struct platform_device *pdev)
>
> /* parse the host bridge base addresses from the device tree file */
> ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> - &pcie->resources, &iobase);
> + &pcie->resources,
> + &bridge->dma_ranges,
> + &iobase);
> 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 8d20f1793a61..093b816b9dc9 100644
> --- a/drivers/pci/controller/pcie-rockchip-host.c
> +++ b/drivers/pci/controller/pcie-rockchip-host.c
> @@ -996,7 +996,8 @@ static int rockchip_pcie_probe(struct platform_device *pdev)
> goto err_deinit_port;
>
> err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
> - &res, &io_base);
> + &res, &bridge->dma_ranges,
> + &io_base);
> 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 45c0f344ccd1..5c9132a02d15 100644
> --- a/drivers/pci/controller/pcie-xilinx-nwl.c
> +++ b/drivers/pci/controller/pcie-xilinx-nwl.c
> @@ -846,7 +846,7 @@ static int nwl_pcie_probe(struct platform_device *pdev)
> }
>
> err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
> - &iobase);
> + &bridge->dma_ranges, &iobase);
> 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 5bf3af3b28e6..a95faca30291 100644
> --- a/drivers/pci/controller/pcie-xilinx.c
> +++ b/drivers/pci/controller/pcie-xilinx.c
> @@ -648,7 +648,7 @@ static int xilinx_pcie_probe(struct platform_device *pdev)
> }
>
> err = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &res,
> - &iobase);
> + &bridge->dma_ranges, &iobase);
> 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 bc7b27a28795..8d31e078461f 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 +528,9 @@ int pci_parse_request_of_pci_ranges(struct device *dev,
> struct resource_entry *win, *tmp;
>
> INIT_LIST_HEAD(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 d22d1b807701..790458953c54 100644
> --- a/drivers/pci/pci.h
> +++ b/drivers/pci/pci.h
> @@ -582,11 +582,15 @@ of_pci_get_max_link_speed(struct device_node *node)
> #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 82e4cd1b7ac3..d57389b86f92 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -2312,6 +2312,7 @@ void pci_release_bus_of_node(struct pci_bus *bus);
> 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) */
> @@ -2326,6 +2327,7 @@ 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 list_head *ib_resources,
> struct resource **bus_range)
> {
> return -EINVAL;
> --
> 2.20.1
>
>
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