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 <jingooh...@gmail.com>
Cc: Gustavo Pimentel <gustavo.pimen...@synopsys.com>
Cc: Lorenzo Pieralisi <lorenzo.pieral...@arm.com>
Cc: Bjorn Helgaas <bhelg...@google.com>
Cc: Thomas Petazzoni <thomas.petazz...@bootlin.com>
Cc: Will Deacon <w...@kernel.org>
Cc: Linus Walleij <linus.wall...@linaro.org>
Cc: Toan Le <t...@os.amperecomputing.com>
Cc: Ley Foon Tan <lf...@altera.com>
Cc: Tom Joseph <tjos...@cadence.com>
Cc: Ray Jui <r...@broadcom.com>
Cc: Scott Branden <sbran...@broadcom.com>
Cc: bcm-kernel-feedback-l...@broadcom.com
Cc: Ryder Lee <ryder....@mediatek.com>
Cc: Karthikeyan Mitran <m.karthike...@mobiveil.co.in>
Cc: Hou Zhiqiang <zhiqiang....@nxp.com>
Cc: Simon Horman <ho...@verge.net.au>
Cc: Shawn Lin <shawn....@rock-chips.com>
Cc: Heiko Stuebner <he...@sntech.de>
Cc: Michal Simek <michal.si...@xilinx.com>
Cc: r...@lists.rocketboards.org
Cc: linux-media...@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockc...@lists.infradead.org
Tested-by: Thomas Petazzoni <thomas.petazz...@bootlin.com> # for AArdvark
Reviewed-by: Andrew Murray <andrew.mur...@arm.com>
Acked-by: Gustavo Pimentel <gustavo.pimen...@synopsys.com>
Signed-off-by: Rob Herring <r...@kernel.org>
---
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 | 2 +-
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 | 2 +
19 files changed, 77 insertions(+), 20 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 12bc7daef5b5..5824913e311b 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..8f81d2c9296a 100644
--- a/drivers/pci/controller/pci-versatile.c
+++ b/drivers/pci/controller/pci-versatile.c
@@ -92,7 +92,7 @@ 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, &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 df19beb2b2f1..d334925f19fd 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 2255ff53e2fb..b538b9ad8917 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..df6bafc54080 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) */
@@ -2288,6 +2289,7 @@ 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
