Hi Rob,
I reviewed and verified this change for non-sorted DT entries.. It is
working fine
Reviewed-by: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
Tested-by: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
Regards,
Srinath.
On Thu, Oct 31, 2019 at 4:01 AM Rob Herring <robh@xxxxxxxxxx> 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
> Tested-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxx> # for AArdvark
> Reviewed-by: Andrew Murray <andrew.murray@xxxxxxx>
> Acked-by: Gustavo Pimentel <gustavo.pimentel@xxxxxxxxxxxx>
> Signed-off-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> Lorenzo, Just sending this one patch. Let me know if you want the whole
> series.
>
> v4:
> - Keep inbound resources sorted because iova_reserve_pci_windows()
> depends on it
> v3:
> - Fix some >80 char lines
> 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 | 51 ++++++++++++++++++-
> drivers/pci/pci.h | 8 ++-
> include/linux/pci.h | 9 ++--
> 19 files changed, 88 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..7d5c7783dfdc 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 +342,48 @@ 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) {
> + struct resource_entry *entry;
> + /*
> + * 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;
> + }
> +
> + /* Keep the resource list sorted */
> + resource_list_for_each_entry(entry, ib_resources)
> + if (entry->res->start > res->start)
> + break;
> +
> + pci_add_resource_offset(&entry->node, res,
> + res->start - range.pci_addr);
> + }
> +
> return 0;
>
> failed:
> @@ -482,6 +526,7 @@ 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 +534,10 @@ 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
>
