diff options
| -rw-r--r-- | Documentation/devicetree/bindings/ata/ahci-platform.txt | 3 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/dma/arm-pl330.txt | 3 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/net/calxeda-xgmac.txt | 3 | ||||
| -rw-r--r-- | arch/arm/boot/dts/highbank.dts | 1 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/highbank.c | 52 |
5 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index 8bb8a76d42e..6c1ad01d27e 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -8,6 +8,9 @@ Required properties: - interrupts : <interrupt mapping for SATA IRQ> - reg : <registers mapping> +Optional properties: +- dma-coherent : Present if dma operations are coherent + Example: sata@ffe08000 { compatible = "calxeda,hb-ahci"; diff --git a/Documentation/devicetree/bindings/dma/arm-pl330.txt b/Documentation/devicetree/bindings/dma/arm-pl330.txt index a4cd273b2a6..36e27d54260 100644 --- a/Documentation/devicetree/bindings/dma/arm-pl330.txt +++ b/Documentation/devicetree/bindings/dma/arm-pl330.txt @@ -9,6 +9,9 @@ Required properties: region. - interrupts: interrupt number to the cpu. +Optional properties: +- dma-coherent : Present if dma operations are coherent + Example: pdma0: pdma@12680000 { diff --git a/Documentation/devicetree/bindings/net/calxeda-xgmac.txt b/Documentation/devicetree/bindings/net/calxeda-xgmac.txt index 411727a3f82..c8ae996bd8f 100644 --- a/Documentation/devicetree/bindings/net/calxeda-xgmac.txt +++ b/Documentation/devicetree/bindings/net/calxeda-xgmac.txt @@ -6,6 +6,9 @@ Required properties: - interrupts : Should contain 3 xgmac interrupts. The 1st is main interrupt. The 2nd is pwr mgt interrupt. The 3rd is low power state interrupt. +Optional properties: +- dma-coherent : Present if dma operations are coherent + Example: ethernet@fff50000 { diff --git a/arch/arm/boot/dts/highbank.dts b/arch/arm/boot/dts/highbank.dts index 9fecf1ae777..7414577c177 100644 --- a/arch/arm/boot/dts/highbank.dts +++ b/arch/arm/boot/dts/highbank.dts @@ -121,6 +121,7 @@ compatible = "calxeda,hb-ahci"; reg = <0xffe08000 0x10000>; interrupts = <0 83 4>; + dma-coherent; }; sdhci@ffe0e000 { diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index d75b0a78d88..93617d61f4b 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -15,6 +15,7 @@ */ #include <linux/clk.h> #include <linux/clkdev.h> +#include <linux/dma-mapping.h> #include <linux/io.h> #include <linux/irq.h> #include <linux/irqdomain.h> @@ -23,6 +24,7 @@ #include <linux/of_platform.h> #include <linux/of_address.h> #include <linux/smp.h> +#include <linux/amba/bus.h> #include <asm/cacheflush.h> #include <asm/smp_plat.h> @@ -149,10 +151,60 @@ static void highbank_power_off(void) cpu_do_idle(); } +static int highbank_platform_notifier(struct notifier_block *nb, + unsigned long event, void *__dev) +{ + struct resource *res; + int reg = -1; + struct device *dev = __dev; + + if (event != BUS_NOTIFY_ADD_DEVICE) + return NOTIFY_DONE; + + if (of_device_is_compatible(dev->of_node, "calxeda,hb-ahci")) + reg = 0xc; + else if (of_device_is_compatible(dev->of_node, "calxeda,hb-sdhci")) + reg = 0x18; + else if (of_device_is_compatible(dev->of_node, "arm,pl330")) + reg = 0x20; + else if (of_device_is_compatible(dev->of_node, "calxeda,hb-xgmac")) { + res = platform_get_resource(to_platform_device(dev), + IORESOURCE_MEM, 0); + if (res) { + if (res->start == 0xfff50000) + reg = 0; + else if (res->start == 0xfff51000) + reg = 4; + } + } + + if (reg < 0) + return NOTIFY_DONE; + + if (of_property_read_bool(dev->of_node, "dma-coherent")) { + writel(0xff31, sregs_base + reg); + set_dma_ops(dev, &arm_coherent_dma_ops); + } else + writel(0, sregs_base + reg); + + return NOTIFY_OK; +} + +static struct notifier_block highbank_amba_nb = { + .notifier_call = highbank_platform_notifier, +}; + +static struct notifier_block highbank_platform_nb = { + .notifier_call = highbank_platform_notifier, +}; + static void __init highbank_init(void) { pm_power_off = highbank_power_off; + bus_register_notifier(&platform_bus_type, &highbank_platform_nb); + bus_register_notifier(&amba_bustype, &highbank_amba_nb); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } |