diff mbox series

[4/8] ARM/net: ixp4xx: Pass ethernet physical base as resource

Message ID 20190524162023.9115-5-linus.walleij@linaro.org
State Superseded
Headers show
Series Xscale IXP4xx ethernet refurbishing | expand

Commit Message

Linus Walleij May 24, 2019, 4:20 p.m. UTC 
In order to probe this ethernet interface from the device tree
all physical MMIO regions must be passed as resources. Begin
this rewrite by first passing the port base address as a
resource for all platforms using this driver, remap it in
the driver and avoid using any reference of the statically
mapped virtual address in the driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

---
 arch/arm/mach-ixp4xx/fsg-setup.c         | 20 ++++++++++++++++++++
 arch/arm/mach-ixp4xx/goramo_mlr.c        | 20 ++++++++++++++++++++
 arch/arm/mach-ixp4xx/ixdp425-setup.c     | 20 ++++++++++++++++++++
 arch/arm/mach-ixp4xx/nas100d-setup.c     | 10 ++++++++++
 arch/arm/mach-ixp4xx/nslu2-setup.c       | 10 ++++++++++
 arch/arm/mach-ixp4xx/omixp-setup.c       | 20 ++++++++++++++++++++
 arch/arm/mach-ixp4xx/vulcan-setup.c      | 20 ++++++++++++++++++++
 drivers/net/ethernet/xscale/ixp4xx_eth.c | 20 +++++++++++---------
 8 files changed, 131 insertions(+), 9 deletions(-)

-- 
2.20.1

Comments

Andrew Lunn May 24, 2019, 8 p.m. UTC | #1 
On Fri, May 24, 2019 at 06:20:19PM +0200, Linus Walleij wrote:
> In order to probe this ethernet interface from the device tree

> all physical MMIO regions must be passed as resources. Begin

> this rewrite by first passing the port base address as a

> resource for all platforms using this driver, remap it in

> the driver and avoid using any reference of the statically

> mapped virtual address in the driver.

> 

> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

> ---

>  arch/arm/mach-ixp4xx/fsg-setup.c         | 20 ++++++++++++++++++++

>  arch/arm/mach-ixp4xx/goramo_mlr.c        | 20 ++++++++++++++++++++

>  arch/arm/mach-ixp4xx/ixdp425-setup.c     | 20 ++++++++++++++++++++

>  arch/arm/mach-ixp4xx/nas100d-setup.c     | 10 ++++++++++

>  arch/arm/mach-ixp4xx/nslu2-setup.c       | 10 ++++++++++

>  arch/arm/mach-ixp4xx/omixp-setup.c       | 20 ++++++++++++++++++++

>  arch/arm/mach-ixp4xx/vulcan-setup.c      | 20 ++++++++++++++++++++

>  drivers/net/ethernet/xscale/ixp4xx_eth.c | 20 +++++++++++---------

>  8 files changed, 131 insertions(+), 9 deletions(-)

> 

> diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c

> index 648932d8d7a8..507ee3878769 100644

> --- a/arch/arm/mach-ixp4xx/fsg-setup.c

> +++ b/arch/arm/mach-ixp4xx/fsg-setup.c

> @@ -132,6 +132,22 @@ static struct platform_device fsg_leds = {

>  };

>  

>  /* Built-in 10/100 Ethernet MAC interfaces */

> +static struct resource fsg_eth_npeb_resources[] = {

> +	{

> +		.start		= IXP4XX_EthB_BASE_PHYS,

> +		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,


Hi Linus

It is a long time since i did resources. But i was always told to use
the SZ_ macros, so SZ_4K. I also think 0xfff is wrong, it should be
0x1000.

	Andrew
Sergei Shtylyov May 25, 2019, 9:14 a.m. UTC | #2 
Hello!

On 24.05.2019 23:00, Andrew Lunn wrote:

>> In order to probe this ethernet interface from the device tree

>> all physical MMIO regions must be passed as resources. Begin

>> this rewrite by first passing the port base address as a

>> resource for all platforms using this driver, remap it in

>> the driver and avoid using any reference of the statically

>> mapped virtual address in the driver.

>>

>> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

>> ---

>>   arch/arm/mach-ixp4xx/fsg-setup.c         | 20 ++++++++++++++++++++

>>   arch/arm/mach-ixp4xx/goramo_mlr.c        | 20 ++++++++++++++++++++

>>   arch/arm/mach-ixp4xx/ixdp425-setup.c     | 20 ++++++++++++++++++++

>>   arch/arm/mach-ixp4xx/nas100d-setup.c     | 10 ++++++++++

>>   arch/arm/mach-ixp4xx/nslu2-setup.c       | 10 ++++++++++

>>   arch/arm/mach-ixp4xx/omixp-setup.c       | 20 ++++++++++++++++++++

>>   arch/arm/mach-ixp4xx/vulcan-setup.c      | 20 ++++++++++++++++++++

>>   drivers/net/ethernet/xscale/ixp4xx_eth.c | 20 +++++++++++---------

>>   8 files changed, 131 insertions(+), 9 deletions(-)

>>

>> diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c

>> index 648932d8d7a8..507ee3878769 100644

>> --- a/arch/arm/mach-ixp4xx/fsg-setup.c

>> +++ b/arch/arm/mach-ixp4xx/fsg-setup.c

>> @@ -132,6 +132,22 @@ static struct platform_device fsg_leds = {

>>   };

>>   

>>   /* Built-in 10/100 Ethernet MAC interfaces */

>> +static struct resource fsg_eth_npeb_resources[] = {

>> +	{

>> +		.start		= IXP4XX_EthB_BASE_PHYS,

>> +		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,

> 

> Hi Linus

> 

> It is a long time since i did resources. But i was always told to use

> the SZ_ macros, so SZ_4K. I also think 0xfff is wrong, it should be

> 0x1000.


    No, 0x0fff is correct there, 0x1000 is not...

> 	Andrew


MBR, Sergei
Andrew Lunn May 28, 2019, 1:21 p.m. UTC | #3 
> >>  /* Built-in 10/100 Ethernet MAC interfaces */

> >>+static struct resource fsg_eth_npeb_resources[] = {

> >>+	{

> >>+		.start		= IXP4XX_EthB_BASE_PHYS,

> >>+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,

> >

> >Hi Linus

> >

> >It is a long time since i did resources. But i was always told to use

> >the SZ_ macros, so SZ_4K. I also think 0xfff is wrong, it should be

> >0x1000.

> 

>    No, 0x0fff is correct there, 0x1000 is not...


Yes, the DEFINE_RES_* macros make this clear. The code should be
changed to use them, and then SZ_ macros can be used, since
DEFINE_RES_NAMED() does a - 1.

	Andrew
diff mbox series

Patch

diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c
index 648932d8d7a8..507ee3878769 100644
--- a/arch/arm/mach-ixp4xx/fsg-setup.c
+++ b/arch/arm/mach-ixp4xx/fsg-setup.c
@@ -132,6 +132,22 @@  static struct platform_device fsg_leds = {
 };
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource fsg_eth_npeb_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct resource fsg_eth_npec_resources[] = {
+	{
+		.start		= IXP4XX_EthC_BASE_PHYS,
+		.end		= IXP4XX_EthC_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info fsg_plat_eth[] = {
 	{
 		.phy		= 5,
@@ -151,12 +167,16 @@  static struct platform_device fsg_eth[] = {
 		.dev = {
 			.platform_data	= fsg_plat_eth,
 		},
+		.num_resources	= ARRAY_SIZE(fsg_eth_npeb_resources),
+		.resource	= fsg_eth_npeb_resources,
 	}, {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEC,
 		.dev = {
 			.platform_data	= fsg_plat_eth + 1,
 		},
+		.num_resources	= ARRAY_SIZE(fsg_eth_npec_resources),
+		.resource	= fsg_eth_npec_resources,
 	}
 };
 
diff --git a/arch/arm/mach-ixp4xx/goramo_mlr.c b/arch/arm/mach-ixp4xx/goramo_mlr.c
index 4d805080020e..7db396cc4353 100644
--- a/arch/arm/mach-ixp4xx/goramo_mlr.c
+++ b/arch/arm/mach-ixp4xx/goramo_mlr.c
@@ -270,6 +270,22 @@  static struct platform_device device_uarts = {
 
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource eth_npeb_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct resource eth_npec_resources[] = {
+	{
+		.start		= IXP4XX_EthC_BASE_PHYS,
+		.end		= IXP4XX_EthC_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info eth_plat[] = {
 	{
 		.phy		= 0,
@@ -287,10 +303,14 @@  static struct platform_device device_eth_tab[] = {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEB,
 		.dev.platform_data	= eth_plat,
+		.num_resources		= ARRAY_SIZE(eth_npeb_resources),
+		.resource		= eth_npeb_resources,
 	}, {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEC,
 		.dev.platform_data	= eth_plat + 1,
+		.num_resources		= ARRAY_SIZE(eth_npec_resources),
+		.resource		= eth_npec_resources,
 	}
 };
 
diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c
index 6f0f7ed18ea8..45d5b720ded6 100644
--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c
+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c
@@ -187,6 +187,22 @@  static struct platform_device ixdp425_uart = {
 };
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource ixp425_npeb_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct resource ixp425_npec_resources[] = {
+	{
+		.start		= IXP4XX_EthC_BASE_PHYS,
+		.end		= IXP4XX_EthC_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info ixdp425_plat_eth[] = {
 	{
 		.phy		= 0,
@@ -204,10 +220,14 @@  static struct platform_device ixdp425_eth[] = {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEB,
 		.dev.platform_data	= ixdp425_plat_eth,
+		.num_resources		= ARRAY_SIZE(ixp425_npeb_resources),
+		.resource		= ixp425_npeb_resources,
 	}, {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEC,
 		.dev.platform_data	= ixdp425_plat_eth + 1,
+		.num_resources		= ARRAY_SIZE(ixp425_npec_resources),
+		.resource		= ixp425_npec_resources,
 	}
 };
 
diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c
index c142cfa8c5d6..6959ad2e3aec 100644
--- a/arch/arm/mach-ixp4xx/nas100d-setup.c
+++ b/arch/arm/mach-ixp4xx/nas100d-setup.c
@@ -165,6 +165,14 @@  static struct platform_device nas100d_uart = {
 };
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource nas100d_eth_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info nas100d_plat_eth[] = {
 	{
 		.phy		= 0,
@@ -178,6 +186,8 @@  static struct platform_device nas100d_eth[] = {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEB,
 		.dev.platform_data	= nas100d_plat_eth,
+		.num_resources		= ARRAY_SIZE(nas100d_eth_resources),
+		.resource		= nas100d_eth_resources,
 	}
 };
 
diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c
index ee1877fcfafe..a428bb918703 100644
--- a/arch/arm/mach-ixp4xx/nslu2-setup.c
+++ b/arch/arm/mach-ixp4xx/nslu2-setup.c
@@ -185,6 +185,14 @@  static struct platform_device nslu2_uart = {
 };
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource nslu2_eth_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info nslu2_plat_eth[] = {
 	{
 		.phy		= 1,
@@ -198,6 +206,8 @@  static struct platform_device nslu2_eth[] = {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEB,
 		.dev.platform_data	= nslu2_plat_eth,
+		.num_resources		= ARRAY_SIZE(nslu2_eth_resources),
+		.resource		= nslu2_eth_resources,
 	}
 };
 
diff --git a/arch/arm/mach-ixp4xx/omixp-setup.c b/arch/arm/mach-ixp4xx/omixp-setup.c
index 2d494b454376..6f86c27b725e 100644
--- a/arch/arm/mach-ixp4xx/omixp-setup.c
+++ b/arch/arm/mach-ixp4xx/omixp-setup.c
@@ -171,6 +171,22 @@  static struct platform_device mic256_leds = {
 };
 
 /* Built-in 10/100 Ethernet MAC interfaces */
+static struct resource ixp425_npeb_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct resource ixp425_npec_resources[] = {
+	{
+		.start		= IXP4XX_EthC_BASE_PHYS,
+		.end		= IXP4XX_EthC_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info ixdp425_plat_eth[] = {
 	{
 		.phy		= 0,
@@ -188,10 +204,14 @@  static struct platform_device ixdp425_eth[] = {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEB,
 		.dev.platform_data	= ixdp425_plat_eth,
+		.num_resources		= ARRAY_SIZE(ixp425_npeb_resources),
+		.resource		= ixp425_npeb_resources,
 	}, {
 		.name			= "ixp4xx_eth",
 		.id			= IXP4XX_ETH_NPEC,
 		.dev.platform_data	= ixdp425_plat_eth + 1,
+		.num_resources		= ARRAY_SIZE(ixp425_npec_resources),
+		.resource		= ixp425_npec_resources,
 	},
 };
 
diff --git a/arch/arm/mach-ixp4xx/vulcan-setup.c b/arch/arm/mach-ixp4xx/vulcan-setup.c
index 2c03d2f6b647..783c291f8f4c 100644
--- a/arch/arm/mach-ixp4xx/vulcan-setup.c
+++ b/arch/arm/mach-ixp4xx/vulcan-setup.c
@@ -122,6 +122,22 @@  static struct platform_device vulcan_uart = {
 	.num_resources		= ARRAY_SIZE(vulcan_uart_resources),
 };
 
+static struct resource vulcan_npeb_resources[] = {
+	{
+		.start		= IXP4XX_EthB_BASE_PHYS,
+		.end		= IXP4XX_EthB_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
+static struct resource vulcan_npec_resources[] = {
+	{
+		.start		= IXP4XX_EthC_BASE_PHYS,
+		.end		= IXP4XX_EthC_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM,
+	},
+};
+
 static struct eth_plat_info vulcan_plat_eth[] = {
 	[0] = {
 		.phy		= 0,
@@ -142,6 +158,8 @@  static struct platform_device vulcan_eth[] = {
 		.dev = {
 			.platform_data	= &vulcan_plat_eth[0],
 		},
+		.num_resources		= ARRAY_SIZE(vulcan_npeb_resources),
+		.resource		= vulcan_npeb_resources,
 	},
 	[1] = {
 		.name			= "ixp4xx_eth",
@@ -149,6 +167,8 @@  static struct platform_device vulcan_eth[] = {
 		.dev = {
 			.platform_data	= &vulcan_plat_eth[1],
 		},
+		.num_resources		= ARRAY_SIZE(vulcan_npec_resources),
+		.resource		= vulcan_npec_resources,
 	},
 };
 
diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index 064ff0886cc3..17d3291d79b4 100644
--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
+++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
@@ -1373,9 +1373,10 @@  static int ixp4xx_eth_probe(struct platform_device *pdev)
 	struct phy_device *phydev = NULL;
 	struct device *dev = &pdev->dev;
 	struct eth_plat_info *plat;
+	resource_size_t regs_phys;
 	struct net_device *ndev;
+	struct resource *res;
 	struct port *port;
-	u32 regs_phys;
 	int err;
 
 	plat = dev_get_platdata(dev);
@@ -1388,13 +1389,18 @@  static int ixp4xx_eth_probe(struct platform_device *pdev)
 	port->netdev = ndev;
 	port->id = pdev->id;
 
+	/* Get the port resource and remap */
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res)
+		return -ENODEV;
+	regs_phys = res->start;
+	port->regs = devm_ioremap_resource(dev, res);
+
 	switch (port->id) {
 	case IXP4XX_ETH_NPEA:
 		/* If the MDIO bus is not up yet, defer probe */
 		if (!mdio_bus)
 			return -EPROBE_DEFER;
-		port->regs = (struct eth_regs __iomem *)IXP4XX_EthA_BASE_VIRT;
-		regs_phys  = IXP4XX_EthA_BASE_PHYS;
 		break;
 	case IXP4XX_ETH_NPEB:
 		/*
@@ -1407,13 +1413,11 @@  static int ixp4xx_eth_probe(struct platform_device *pdev)
 			      IXP4XX_FEATURE_NPEB_ETH0))
 				return -ENODEV;
 			/* Else register the MDIO bus on NPE-B */
-			if ((err = ixp4xx_mdio_register(IXP4XX_EthC_BASE_VIRT)))
+			if ((err = ixp4xx_mdio_register(port->regs)))
 				return err;
 		}
 		if (!mdio_bus)
 			return -EPROBE_DEFER;
-		port->regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
-		regs_phys  = IXP4XX_EthB_BASE_PHYS;
 		break;
 	case IXP4XX_ETH_NPEC:
 		/*
@@ -1425,13 +1429,11 @@  static int ixp4xx_eth_probe(struct platform_device *pdev)
 			      IXP4XX_FEATURE_NPEC_ETH))
 				return -ENODEV;
 			/* Else register the MDIO bus on NPE-C */
-			if ((err = ixp4xx_mdio_register(IXP4XX_EthC_BASE_VIRT)))
+			if ((err = ixp4xx_mdio_register(port->regs)))
 				return err;
 		}
 		if (!mdio_bus)
 			return -EPROBE_DEFER;
-		port->regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
-		regs_phys  = IXP4XX_EthC_BASE_PHYS;
 		break;
 	default:
 		return -ENODEV;