--- /dev/null
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
+CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
+CONFIG_ARCH_MCS814X=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USES_GETTIMEOFFSET=y
+CONFIG_ARM=y
+CONFIG_ARM_APPENDED_DTB=y
+# CONFIG_ARM_ATAG_DTB_COMPAT is not set
+# CONFIG_ARM_CPU_SUSPEND is not set
+CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_NR_BANKS=8
+# CONFIG_ARM_THUMB is not set
+# CONFIG_ARPD is not set
+CONFIG_BCMA_POSSIBLE=y
+CONFIG_BINFMT_MISC=y
+# CONFIG_BRIDGE is not set
+# CONFIG_CACHE_L2X0 is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CMDLINE="earlyprintk"
+CONFIG_CMDLINE_EXTEND=y
+CONFIG_CPU_32v5=y
+CONFIG_CPU_ABRT_EV5TJ=y
+CONFIG_CPU_ARM926T=y
+# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
+CONFIG_CPU_CACHE_VIVT=y
+CONFIG_CPU_COPY_V4WB=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_PABRT_LEGACY=y
+CONFIG_CPU_TLB_V4WBI=y
+CONFIG_CPU_USE_DOMAINS=y
+CONFIG_CRC_CCITT=y
+CONFIG_CRC_ITU_T=y
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_CRC32C=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_DEBUG_LL=y
+CONFIG_DEBUG_LL_UART_NONE=y
+# CONFIG_DEBUG_USER is not set
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DTC=y
+CONFIG_EARLY_PRINTK=y
+# CONFIG_ENABLE_WARN_DEPRECATED is not set
+CONFIG_FIQ=y
+CONFIG_FRAME_POINTER=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_IRQ_CHIP=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIO_MCS814X=y
+CONFIG_GPIO_SYSFS=y
+# CONFIG_HAMRADIO is not set
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAVE_AOUT=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DMA_API_DEBUG=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_GENERIC_HARDIRQS=y
+CONFIG_HAVE_IRQ_WORK=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_MEMBLOCK=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_SPARSE_IRQ=y
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_MCS814X=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_IRQ_DOMAIN=y
+# CONFIG_ISDN is not set
+CONFIG_JFFS2_LZO=y
+CONFIG_JFFS2_RUBIN=y
+# CONFIG_JFFS2_SUMMARY is not set
+CONFIG_JFFS2_ZLIB=y
+CONFIG_KALLSYMS=y
+CONFIG_KTIME_SCALAR=y
+CONFIG_LEDS_GPIO=y
+# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set
+# CONFIG_LEDS_TRIGGER_NETDEV is not set
+# CONFIG_LEDS_TRIGGER_TIMER is not set
+CONFIG_LIBCRC32C=y
+CONFIG_LZO_COMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+CONFIG_MACH_DLAN_USB_EXT=y
+CONFIG_MACH_RBT_832=y
+CONFIG_MCS8140=y
+CONFIG_MCS814X_PHY=y
+# CONFIG_MCS814X_WATCHDOG is not set
+CONFIG_MDIO_BOARDINFO=y
+# CONFIG_MFD_T7L66XB is not set
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_IMPA7 is not set
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_OF_PARTS=y
+CONFIG_MTD_PHYSMAP=y
+CONFIG_MTD_PHYSMAP_OF=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_MACH_MEMORY_H=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NET_KEY=y
+# CONFIG_NET_SCHED is not set
+# CONFIG_NET_VENDOR_BROADCOM is not set
+# CONFIG_NET_VENDOR_CHELSIO is not set
+# CONFIG_NET_VENDOR_FARADAY is not set
+# CONFIG_NET_VENDOR_INTEL is not set
+# CONFIG_NET_VENDOR_MARVELL is not set
+# CONFIG_NET_VENDOR_MICREL is not set
+# CONFIG_NET_VENDOR_NATSEMI is not set
+# CONFIG_NET_VENDOR_SEEQ is not set
+# CONFIG_NET_VENDOR_SMSC is not set
+# CONFIG_NET_VENDOR_STMICRO is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="iso8859-15"
+CONFIG_NUPORT_ETHERNET_DRIVER=y
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_DEVICE=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_NET=y
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PAGE_OFFSET=0xC0000000
+# CONFIG_PARTITION_ADVANCED is not set
+# CONFIG_PCI is not set
+# CONFIG_PCI_SYSCALL is not set
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PHYLIB=y
+# CONFIG_PREEMPT_RCU is not set
+# CONFIG_PREVENT_FIRMWARE_BUILD is not set
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_SCSI_DMA is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SPLIT_PTLOCK_CPUS=999999
+# CONFIG_SWAP is not set
+# CONFIG_SYN_COOKIES is not set
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_UID16=y
+# CONFIG_USB_ARCH_HAS_XHCI is not set
+CONFIG_USB_SUPPORT=y
+CONFIG_USE_OF=y
+CONFIG_VECTORS_BASE=0xffff0000
+# CONFIG_VFP is not set
+# CONFIG_VLAN_8021Q is not set
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_WATCHDOG_CORE=y
+CONFIG_WATCHDOG_NOWAYOUT=y
+# CONFIG_WEXT_PRIV is not set
+# CONFIG_WEXT_SPY is not set
+# CONFIG_WIRELESS_EXT is not set
+CONFIG_XZ_DEC=y
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZONE_DMA_FLAG=0
--- /dev/null
+/*
+ * dlan-usb-extender.dts - Device Tree file for Devolo dLAN USB Extender
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2
+ */
+
+/dts-v1/;
+/include/ "mcs8140.dtsi"
+
+/ {
+ model = "Devolo dLAN USB Extender";
+ compatible = "devolo,dlan-usb-extender", "moschip,mcs8140", "moschip,mcs814x";
+
+ chosen {
+ bootargs = "mem=16M console=ttyS0,57600 earlyprintk";
+ };
+
+ ahb {
+ vci {
+ eth0: ethernet@40084000 {
+ phy = <&phy0>;
+ phy-mode = "mii";
+
+ phy0: ethernet-phy@0 {
+ reg = <8>;
+ };
+ };
+
+ adc {
+ sdram: memory@0,0 {
+ reg = <0 0 0x1000000>;
+ };
+
+ nor: flash@7,0 {
+
+ partition@0 {
+ label = "ArmBoot";
+ reg = <0 0x30000>;
+ };
+ partition@30000 {
+ label = "Config1";
+ reg = <0x30000 0x10000>;
+ };
+ partition@40000 {
+ label = "Config2";
+ reg = <0x40000 0x10000>;
+ };
+ partition@50000 {
+ label = "kernel";
+ reg = <0x50000 0x100000>;
+ };
+ partition@150000 {
+ label = "rootfs";
+ reg = <0x150000 0x3C0000>;
+ };
+ partition@50001 {
+ label = "linux";
+ reg = <0x50000 0x4C0000>;
+ };
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ usb {
+ label = "dlan-usb-extender:green:usb";
+ gpios = <&gpio 19 0>; // gpio 19 active high
+ };
+ };
+ };
+ };
+};
+
--- /dev/null
+/*
+ * mcs8140.dtsi - Device Tree Include file for Moschip MCS8140 family SoC
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2.
+ */
+
+/include/ "skeleton.dtsi"
+
+/ {
+ model = "Moschip MCS8140 family SoC";
+ compatible = "moschip,mcs8140";
+ interrupt-parent = <&intc>;
+
+ aliases {
+ serial0 = &uart0;
+ eth0 = ð0;
+ };
+
+ cpus {
+ cpu@0 {
+ compatible = "arm,arm926ejs";
+ };
+ };
+
+ ahb {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ vci {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ eth0: ethernet@40084000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "moschip,nuport-mac";
+ reg = <0x40084000 0xd8 // mac
+ 0x40080000 0x58>; // dma channels
+ interrupts = <4 5 29>; /* tx, rx, link */
+ nuport-mac,buffer-shifting;
+ nuport-mac,link-activity = <0>;
+ };
+
+ tso@40088000 {
+ reg = <0x40088000 0x1c>;
+ interrupts = <7>;
+ };
+
+ i2s@4008c000 {
+ compatible = "moschip,mcs814x-i2s";
+ reg = <0x4008c000 0x18>;
+ interrupts = <8>;
+ };
+
+ ipsec@40094000 {
+ compatible = "moschip,mcs814x-ipsec";
+ reg = <0x40094000 0x1d8>;
+ interrupts = <16>;
+ };
+
+ rng@4009c000 {
+ compatible = "moschip,mcs814x-rng";
+ reg = <0x4009c000 0x8>;
+ };
+
+ memc@400a8000 {
+ reg = <0x400a8000 0x58>;
+ };
+
+ list-proc@400ac0c0 {
+ reg = <0x400ac0c0 0x38>;
+ interrupts = <19 27>; // done, error
+ };
+
+ gpio: gpio@400d0000 {
+ compatible = "moschip,mcs814x-gpio";
+ reg = <0x400d0000 0x670>;
+ interrupts = <10>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ num-gpios = <20>;
+ };
+
+ eepio: gpio@400d4000 {
+ compatible = "moschip,mcs814x-gpio";
+ reg = <0x400d4000 0x470>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ num-gpios = <4>;
+ };
+
+ uart0: serial@400dc000 {
+ compatible = "ns16550";
+ reg = <0x400dc000 0x20>;
+ clock-frequency = <50000000>;
+ reg-shift = <2>;
+ interrupts = <21>;
+ status = "okay";
+ };
+
+ intc: interrupt-controller@400e4000 {
+ #interrupt-cells = <1>;
+ compatible = "moschip,mcs814x-intc";
+ interrupt-controller;
+ interrupt-parent;
+ reg = <0x400e4000 0x48>;
+ };
+
+ m2m@400e8000 {
+ reg = <0x400e8000 0x24>;
+ interrupts = <17>;
+ };
+
+ eth-filters@400ec000 {
+ reg = <0x400ec000 0x80>;
+ };
+
+ timer: timer@400f800c {
+ compatible = "moschip,mcs814x-timer";
+ interrupts = <0>;
+ reg = <0x400f800c 0x8>;
+ };
+
+ watchdog@400f8014 {
+ compatible = "moschip,mcs814x-wdt";
+ reg = <0x400f8014 0x8>;
+ };
+
+ adc {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <1>;
+ // 8 64MB chip-selects
+ ranges = <0 0 0x00000000 0x4000000 // sdram
+ 1 0 0x04000000 0x4000000 // sdram
+ 2 0 0x08000000 0x4000000 // reserved
+ 3 0 0x0c000000 0x4000000 // flash/localbus
+ 4 0 0x10000000 0x4000000 // flash/localbus
+ 5 0 0x14000000 0x4000000 // flash/localbus
+ 6 0 0x18000000 0x4000000 // flash/localbus
+ 7 0 0x1c000000 0x4000000>; // flash/localbus
+
+ sdram: memory@0,0 {
+ reg = <0 0 0>;
+ };
+
+ nor: flash@7,0 {
+ reg = <7 0 0x4000000>;
+ compatible = "cfi-flash";
+ bank-width = <1>; // 8-bit external flash
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
+
+ usb0: ehci@400fc000 {
+ compatible = "moschip,mcs814x-ehci", "usb-ehci";
+ reg = <0x400fc000 0x74>;
+ interrupts = <2>;
+ };
+
+ usb1: ohci@400fd000 {
+ compatible = "moschip,mcs814x-ohci", "ohci-le";
+ reg = <0x400fd000 0x74>;
+ interrupts = <11>;
+ };
+
+ usb2: ohci@400fe000 {
+ compatible = "moschip,mcs814x-ohci", "ohci-le";
+ reg = <0x400fe000 0x74>;
+ interrupts = <12>;
+ };
+
+ usb3: otg@400ff000 {
+ compatible = "moschip,msc814x-otg", "usb-otg";
+ reg = <0x400ff000 0x1000>;
+ interrupts = <13>;
+ };
+ };
+
+ };
+};
--- /dev/null
+/*
+ * rbt-832.dts - Device Tree file for Tigal RBT-832
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2
+ */
+
+/dts-v1/;
+/include/ "mcs8140.dtsi"
+
+/ {
+ model = "Tigal RBT-832";
+ compatible = "tigal,rbt-832", "moschip,mcs8140", "moschip,mcs814x";
+
+ chosen {
+ bootargs = "mem=32M console=ttyS0,115200 earlyprintk";
+ };
+
+ ahb {
+ vci {
+ eth0: ethernet@40084000 {
+ nuport-mac,link-activity = <0x01>;
+ phy = <&phy0>;
+ phy-mode = "mii";
+
+ phy0: ethernet-phy@0 {
+ reg = <1>;
+ };
+ };
+
+ adc {
+ sdram: memory@0,0 {
+ reg = <0 0 0x2000000>;
+ };
+
+ nor: flash@7,0 {
+
+ partition@0 {
+ label = "ArmBoot";
+ reg = <0 0x40000>;
+ };
+ partition@30000 {
+ label = "Enviroment";
+ reg = <0x40000 0x20000>;
+ };
+ partition@50000 {
+ label = "bZimage";
+ reg = <0x60000 0x1a0000>;
+ };
+ partition@150000 {
+ label = "UserFS";
+ reg = <0x200000 0x600000>;
+ };
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ ethernet {
+ label = "rbt-832:red:ethernet";
+ gpios = <&gpio 0 0>; // gpio 0 active high
+ };
+
+ usb0 {
+ label = "rbt-832:red:usb0";
+ gpios = <&gpio 4 0>; // gpio 4 active high
+ };
+
+ usb1 {
+ label = "rbt-832:red:usb1";
+ gpios = <&gpio 3 0>; // gpio 3 active high
+ };
+
+ usb2 {
+ label = "rbt-832:red:usb2";
+ gpios = <&gpio 2 0>; // gpio 2 active high
+ };
+
+ usb3 {
+ label = "rbt-832:red:usb3";
+ gpios = <&gpio 1 0>; // gpio 1 active high
+ };
+ };
+ };
+ };
+};
+
--- /dev/null
+if ARCH_MCS814X
+
+config MCS8140
+ bool
+ select CPU_ARM926T
+
+menu "Moschip MCS8140 boards"
+
+config MACH_DLAN_USB_EXT
+ bool "Devolo dLAN USB Extender"
+ select MCS8140
+ select NEW_LEDS
+ select LEDS_CLASS
+ select LEDS_GPIO
+ help
+ Machine support for the Devolo dLAN USB Extender
+
+config MACH_RBT_832
+ bool "Tigal RBT-832"
+ select MCS8140
+ select NEW_LEDS
+ select LEDS_CLASS
+ select LEDS_GPIO
+ help
+ Machine support for the Tigal RBT-832 board
+
+endmenu
+
+endif
--- /dev/null
+obj-y += clock.o
+obj-y += common.o
+obj-y += irq.o
+obj-y += timer.o
+obj-y += board-mcs8140-dt.o
--- /dev/null
+ zreladdr-y := 0x00008000
+
+dtb-$(CONFIG_MACH_DLAN_USB_EXT) += dlan-usb-extender.dtb
+dtb-$(CONFIG_MACH_RBT_832) += rbt-832.dtb
--- /dev/null
+/*
+ * Setup code for Moschip MCS8140-based board using Device Tree
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2.
+ */
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/irqdomain.h>
+#include <linux/of_platform.h>
+
+#include "common.h"
+
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+static void __init mcs814x_dt_device_init(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ mcs814x_init_machine();
+}
+
+static const char *mcs8140_dt_board_compat[] __initdata = {
+ "moschip,mcs8140",
+ NULL, /* sentinel */
+};
+
+DT_MACHINE_START(mcs8140_dt, "Moschip MCS8140 board")
+ /* Maintainer: Florian Fainelli <florian@openwrt.org> */
+ .map_io = mcs814x_map_io,
+ .init_early = mcs814x_clk_init,
+ .init_irq = mcs814x_of_irq_init,
+ .init_time = mcs814x_timer_init,
+ .init_machine = mcs814x_dt_device_init,
+ .restart = mcs814x_restart,
+ .dt_compat = mcs8140_dt_board_compat,
+ .handle_irq = mcs814x_handle_irq,
+MACHINE_END
+
--- /dev/null
+/*
+ * Moschip MCS814x clock routines
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2
+ */
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/export.h>
+#include <linux/spinlock.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/clkdev.h>
+#include <linux/clk.h>
+
+#include <mach/mcs814x.h>
+
+#include "common.h"
+
+#define KHZ 1000
+#define MHZ (KHZ * KHZ)
+
+struct clk_ops {
+ unsigned long (*get_rate)(struct clk *clk);
+ int (*set_rate)(struct clk *clk, unsigned long rate);
+ struct clk *(*get_parent)(struct clk *clk);
+ int (*enable)(struct clk *clk, int enable);
+};
+
+struct clk {
+ struct clk *parent; /* parent clk */
+ unsigned long rate; /* clock rate in Hz */
+ unsigned long divider; /* clock divider */
+ u32 usecount; /* reference count */
+ struct clk_ops *ops; /* clock operation */
+ u32 enable_reg; /* clock enable register */
+ u32 enable_mask; /* clock enable mask */
+};
+
+static unsigned long clk_divide_parent(struct clk *clk)
+{
+ if (clk->parent && clk->divider)
+ return clk_get_rate(clk->parent) / clk->divider;
+ else
+ return 0;
+}
+
+static int clk_local_onoff_enable(struct clk *clk, int enable)
+{
+ u32 tmp;
+
+ /* no enable_reg means the clock is always enabled */
+ if (!clk->enable_reg)
+ return 0;
+
+ tmp = readl_relaxed(mcs814x_sysdbg_base + clk->enable_reg);
+ if (!enable)
+ tmp &= ~clk->enable_mask;
+ else
+ tmp |= clk->enable_mask;
+
+ writel_relaxed(tmp, mcs814x_sysdbg_base + clk->enable_reg);
+
+ return 0;
+}
+
+static struct clk_ops default_clk_ops = {
+ .get_rate = clk_divide_parent,
+ .enable = clk_local_onoff_enable,
+};
+
+static DEFINE_SPINLOCK(clocks_lock);
+
+static const unsigned long cpu_freq_table[] = {
+ 175000,
+ 300000,
+ 125000,
+ 137500,
+ 212500,
+ 250000,
+ 162500,
+ 187500,
+ 162500,
+ 150000,
+ 225000,
+ 237500,
+ 200000,
+ 262500,
+ 275000,
+ 287500
+};
+
+static struct clk clk_cpu;
+
+/* System clock is fixed at 50Mhz */
+static struct clk clk_sys = {
+ .rate = 50 * MHZ,
+};
+
+static struct clk clk_sdram;
+
+static struct clk clk_timer0 = {
+ .parent = &clk_sdram,
+ .divider = 2,
+ .ops = &default_clk_ops,
+};
+
+static struct clk clk_timer1_2 = {
+ .parent = &clk_sys,
+};
+
+/* Watchdog clock is system clock / 128 */
+static struct clk clk_wdt = {
+ .parent = &clk_sys,
+ .divider = 128,
+ .ops = &default_clk_ops,
+};
+
+static struct clk clk_emac = {
+ .ops = &default_clk_ops,
+ .enable_reg = SYSDBG_SYSCTL,
+ .enable_mask = SYSCTL_EMAC,
+};
+
+static struct clk clk_ephy = {
+ .ops = &default_clk_ops,
+ .enable_reg = SYSDBG_PLL_CTL,
+ .enable_mask = ~SYSCTL_EPHY, /* active low */
+};
+
+static struct clk clk_cipher = {
+ .ops = &default_clk_ops,
+ .enable_reg = SYSDBG_SYSCTL,
+ .enable_mask = SYSCTL_CIPHER,
+};
+
+#define CLK(_dev, _con, _clk) \
+{ .dev_id = (_dev), .con_id = (_con), .clk = (_clk) },
+
+static struct clk_lookup mcs814x_chip_clks[] = {
+ CLK("cpu", NULL, &clk_cpu)
+ CLK("sys", NULL, &clk_sys)
+ CLK("sdram", NULL, &clk_sdram)
+ /* 32-bits timer0 */
+ CLK("timer0", NULL, &clk_timer0)
+ /* 16-bits timer1 */
+ CLK("timer1", NULL, &clk_timer1_2)
+ /* 64-bits timer2, same as timer 1 */
+ CLK("timer2", NULL, &clk_timer1_2)
+ CLK(NULL, "wdt", &clk_wdt)
+ CLK(NULL, "emac", &clk_emac)
+ CLK(NULL, "ephy", &clk_ephy)
+ CLK(NULL, "cipher", &clk_cipher)
+};
+
+static void local_clk_disable(struct clk *clk)
+{
+ WARN_ON(!clk->usecount);
+
+ if (clk->usecount > 0) {
+ clk->usecount--;
+
+ if ((clk->usecount == 0) && (clk->ops->enable))
+ clk->ops->enable(clk, 0);
+
+ if (clk->parent)
+ local_clk_disable(clk->parent);
+ }
+}
+
+static int local_clk_enable(struct clk *clk)
+{
+ int ret = 0;
+
+ if (clk->parent)
+ ret = local_clk_enable(clk->parent);
+
+ if (ret)
+ return ret;
+
+ if ((clk->usecount == 0) && (clk->ops->enable))
+ ret = clk->ops->enable(clk, 1);
+
+ if (!ret)
+ clk->usecount++;
+ else if (clk->parent && clk->parent->ops->enable)
+ local_clk_disable(clk->parent);
+
+ return ret;
+}
+
+int clk_enable(struct clk *clk)
+{
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ ret = local_clk_enable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+
+ return ret;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ local_clk_disable(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return 0;
+
+ if (clk->rate)
+ return clk->rate;
+
+ if (clk->ops && clk->ops->get_rate)
+ return clk->ops->get_rate(clk);
+
+ return clk_get_rate(clk->parent);
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+struct clk *clk_get_parent(struct clk *clk)
+{
+ unsigned long flags;
+
+ if (unlikely(IS_ERR_OR_NULL(clk)))
+ return NULL;
+
+ if (!clk->ops || !clk->ops->get_parent)
+ return clk->parent;
+
+ spin_lock_irqsave(&clocks_lock, flags);
+ clk->parent = clk->ops->get_parent(clk);
+ spin_unlock_irqrestore(&clocks_lock, flags);
+
+ return clk->parent;
+}
+EXPORT_SYMBOL(clk_get_parent);
+
+void __init mcs814x_clk_init(void)
+{
+ u32 bs1;
+ u8 cpu_freq;
+
+ clkdev_add_table(mcs814x_chip_clks, ARRAY_SIZE(mcs814x_chip_clks));
+
+ /* read the bootstrap registers to know the exact clocking scheme */
+ bs1 = readl_relaxed(mcs814x_sysdbg_base + SYSDBG_BS1);
+ cpu_freq = (bs1 >> CPU_FREQ_SHIFT) & CPU_FREQ_MASK;
+
+ pr_info("CPU frequency: %lu (kHz)\n", cpu_freq_table[cpu_freq]);
+ clk_cpu.rate = cpu_freq * KHZ;
+
+ /* read SDRAM frequency */
+ if (bs1 & SDRAM_FREQ_BIT)
+ clk_sdram.rate = 100 * MHZ;
+ else
+ clk_sdram.rate = 133 * MHZ;
+
+ pr_info("SDRAM frequency: %lu (MHz)\n", clk_sdram.rate / MHZ);
+}
+
--- /dev/null
+/*
+ * arch/arm/mach-mcs814x/common.c
+ *
+ * Core functions for Moschip MCS814x SoCs
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <asm/setup.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/mcs814x.h>
+#include <mach/cpu.h>
+#include <asm/pgtable.h>
+#include <asm/mach/map.h>
+
+void __iomem *mcs814x_sysdbg_base;
+
+static struct map_desc mcs814x_io_desc[] __initdata = {
+ {
+ .virtual = MCS814X_IO_BASE,
+ .pfn = __phys_to_pfn(MCS814X_IO_START),
+ .length = MCS814X_IO_SIZE,
+ .type = MT_DEVICE
+ },
+};
+
+struct cpu_mode {
+ const char *name;
+ int gpio_start;
+ int gpio_end;
+};
+
+static const struct cpu_mode cpu_modes[] = {
+ {
+ .name = "I2S",
+ .gpio_start = 4,
+ .gpio_end = 8,
+ },
+ {
+ .name = "UART",
+ .gpio_start = 4,
+ .gpio_end = 9,
+ },
+ {
+ .name = "External MII",
+ .gpio_start = 0,
+ .gpio_end = 16,
+ },
+ {
+ .name = "Normal",
+ .gpio_start = -1,
+ .gpio_end = -1,
+ },
+};
+
+static void mcs814x_eth_hardware_filter_set(u8 value)
+{
+ u32 reg;
+
+ reg = readl_relaxed(MCS814X_VIRT_BASE + MCS814X_DBGLED);
+ if (value)
+ reg |= 0x80;
+ else
+ reg &= ~0x80;
+ writel_relaxed(reg, MCS814X_VIRT_BASE + MCS814X_DBGLED);
+}
+
+static void mcs814x_eth_led_cfg_set(u8 cfg)
+{
+ u32 reg;
+
+ reg = readl_relaxed(mcs814x_sysdbg_base + SYSDBG_BS2);
+ reg &= ~LED_CFG_MASK;
+ reg |= cfg;
+ writel_relaxed(reg, mcs814x_sysdbg_base + SYSDBG_BS2);
+}
+
+static void mcs814x_eth_buffer_shifting_set(u8 value)
+{
+ u8 reg;
+
+ reg = readb_relaxed(mcs814x_sysdbg_base + SYSDBG_SYSCTL_MAC);
+ if (value)
+ reg |= BUF_SHIFT_BIT;
+ else
+ reg &= ~BUF_SHIFT_BIT;
+ writeb_relaxed(reg, mcs814x_sysdbg_base + SYSDBG_SYSCTL_MAC);
+}
+
+static struct of_device_id mcs814x_eth_ids[] __initdata = {
+ { .compatible = "moschip,nuport-mac", },
+ { /* sentinel */ },
+};
+
+/* Configure platform specific knobs based on ethernet device node
+ * properties */
+static void mcs814x_eth_init(void)
+{
+ struct device_node *np;
+ const unsigned int *intspec;
+
+ np = of_find_matching_node(NULL, mcs814x_eth_ids);
+ if (!np)
+ return;
+
+ /* hardware filter must always be enabled */
+ mcs814x_eth_hardware_filter_set(1);
+
+ intspec = of_get_property(np, "nuport-mac,buffer-shifting", NULL);
+ if (!intspec)
+ mcs814x_eth_buffer_shifting_set(0);
+ else
+ mcs814x_eth_buffer_shifting_set(1);
+
+ intspec = of_get_property(np, "nuport-mac,link-activity", NULL);
+ if (intspec)
+ mcs814x_eth_led_cfg_set(be32_to_cpup(intspec));
+
+ of_node_put(np);
+}
+
+void __init mcs814x_init_machine(void)
+{
+ u32 bs2, cpu_mode;
+ int gpio;
+
+ bs2 = readl_relaxed(mcs814x_sysdbg_base + SYSDBG_BS2);
+ cpu_mode = (bs2 >> CPU_MODE_SHIFT) & CPU_MODE_MASK;
+
+ pr_info("CPU mode: %s\n", cpu_modes[cpu_mode].name);
+
+ /* request the gpios since the pins are muxed for functionnality */
+ for (gpio = cpu_modes[cpu_mode].gpio_start;
+ gpio == cpu_modes[cpu_mode].gpio_end; gpio++) {
+ if (gpio != -1)
+ gpio_request(gpio, cpu_modes[cpu_mode].name);
+ }
+
+ mcs814x_eth_init();
+}
+
+void __init mcs814x_map_io(void)
+{
+ iotable_init(mcs814x_io_desc, ARRAY_SIZE(mcs814x_io_desc));
+
+ mcs814x_sysdbg_base = ioremap(MCS814X_IO_START + MCS814X_SYSDBG,
+ MCS814X_SYSDBG_SIZE);
+ if (!mcs814x_sysdbg_base)
+ panic("unable to remap sysdbg base");
+}
+
+void mcs814x_restart(enum reboot_mode mode, const char *cmd)
+{
+ writel_relaxed(~(1 << 31), mcs814x_sysdbg_base);
+}
--- /dev/null
+#ifndef __ARCH_MCS814X_COMMON_H
+#define __ARCH_MCS814X_COMMON_H
+
+#include <asm/mach/time.h>
+
+void mcs814x_map_io(void);
+void mcs814x_clk_init(void);
+void mcs814x_of_irq_init(void);
+void mcs814x_init_machine(void);
+void mcs814x_handle_irq(struct pt_regs *regs);
+void mcs814x_restart(char mode, const char *cmd);
+void mcs814x_timer_init(void);
+extern void __iomem *mcs814x_sysdbg_base;
+
+#endif /* __ARCH_MCS814X_COMMON_H */
--- /dev/null
+#ifndef __ASM_ARCH_CPU_H__
+#define __ASM_ARCH_CPU_H__
+
+#include <asm/cputype.h>
+
+#define MCS8140_ID 0x41069260 /* ARM926EJ-S */
+#define MCS814X_MASK 0xff0ffff0
+
+#ifdef CONFIG_MCS8140
+/* Moschip MCS8140 is based on an ARM926EJ-S core */
+#define soc_is_mcs8140() ((read_cpuid_id() & MCS814X_MASK) == MCS8140_ID)
+#else
+#define soc_is_mcs8140() (0)
+#endif /* !CONFIG_MCS8140 */
+
+#endif /* __ASM_ARCH_CPU_H__ */
--- /dev/null
+#include <mach/mcs814x.h>
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =MCS814X_PHYS_BASE
+ ldr \rv, =MCS814X_VIRT_BASE
+ orr \rp, \rp, #MCS814X_UART
+ orr \rv, \rv, #MCS814X_UART
+ .endm
+
+#define UART_SHIFT 2
+#include <asm/hardware/debug-8250.S>
--- /dev/null
+#include <mach/mcs814x.h>
+ .macro disable_fiq
+ .endm
+
+ .macro arch_ret_to_user, tmp1, tmp2
+ .endm
--- /dev/null
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+/* new generic GPIO API */
+#include <asm-generic/gpio.h>
+
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep __gpio_cansleep
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+ return -EINVAL;
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+ return -EINVAL;
+}
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include "mcs814x.h"
+
+#endif
+
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * We don't support ins[lb]/outs[lb]. Make them fault.
+ */
+#define __raw_readsb(p, d, l) do { *(int *)0 = 0; } while (0)
+#define __raw_readsl(p, d, l) do { *(int *)0 = 0; } while (0)
+#define __raw_writesb(p, d, l) do { *(int *)0 = 0; } while (0)
+#define __raw_writesl(p, d, l) do { *(int *)0 = 0; } while (0)
+
+#define __io(a) __typesafe_io(a)
+#define __mem_pci(a) (a)
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#define FIQ_START 0
+
+#define NR_IRQS 32
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_MCS814X_H
+#define __ASM_ARCH_MCS814X_H
+
+#define MCS814X_IO_BASE 0xF0000000
+#define MCS814X_IO_START 0x40000000
+#define MCS814X_IO_SIZE 0x00100000
+
+/* IRQ controller register offset */
+#define MCS814X_IRQ_ICR 0x00
+#define MCS814X_IRQ_ISR 0x04
+#define MCS814X_IRQ_MASK 0x20
+#define MCS814X_IRQ_STS0 0x40
+
+#define MCS814X_PHYS_BASE 0x40000000
+#define MCS814X_VIRT_BASE MCS814X_IO_BASE
+
+#define MCS814X_UART 0x000DC000
+#define MCS814X_DBGLED 0x000EC000
+#define MCS814X_SYSDBG 0x000F8000
+#define MCS814X_SYSDBG_SIZE 0x50
+
+/* System configuration and bootstrap registers */
+#define SYSDBG_BS1 0x00
+#define CPU_FREQ_SHIFT 27
+#define CPU_FREQ_MASK 0x0F
+#define SDRAM_FREQ_BIT (1 << 22)
+
+#define SYSDBG_BS2 0x04
+#define LED_CFG_MASK 0x03
+#define CPU_MODE_SHIFT 23
+#define CPU_MODE_MASK 0x03
+
+#define SYSDBG_SYSCTL_MAC 0x1d
+#define BUF_SHIFT_BIT (1 << 0)
+
+#define SYSDBG_SYSCTL 0x08
+#define SYSCTL_EMAC (1 << 0)
+#define SYSCTL_EPHY (1 << 0) /* active low */
+#define SYSCTL_CIPHER (1 << 16)
+
+#define SYSDBG_PLL_CTL 0x3C
+
+#endif /* __ASM_ARCH_MCS814X_H */
+
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PLAT_PHYS_OFFSET UL(0x00000000)
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_PARAM_H
+#define __ASM_ARCH_PARAM_H
+
+#define HZ 100
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+static inline void arch_idle(void)
+{
+ cpu_do_idle();
+}
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2003 Artec Design Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+
+/*
+ * Timex specification for MCS814X
+ */
+#define CLOCK_TICK_RATE 100
+
+#endif
--- /dev/null
+/*
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <linux/serial_reg.h>
+#include <asm/io.h>
+#include <mach/mcs814x.h>
+#include <mach/cpu.h>
+
+#define UART_SHIFT (2)
+
+/* cannot be static because the code will be inlined */
+void __iomem *uart_base;
+
+static inline void putc(int c)
+{
+ while (!(__raw_readb(uart_base + (UART_LSR << UART_SHIFT)) & UART_LSR_TEMT));
+ __raw_writeb(c, uart_base + (UART_TX << UART_SHIFT));
+}
+
+static inline void flush(void)
+{
+}
+
+static inline void arch_decomp_setup(void)
+{
+ if (soc_is_mcs8140())
+ uart_base = (void __iomem *)(MCS814X_PHYS_BASE +MCS814X_UART);
+}
+
+#define arch_decomp_wdog()
+
+#endif
--- /dev/null
+/*
+ * Moschip MCS814x generic interrupt controller routines
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under the GPLv2
+ */
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/irqdomain.h>
+
+#include <asm/exception.h>
+#include <asm/mach/irq.h>
+#include <mach/mcs814x.h>
+
+static void __iomem *mcs814x_intc_base;
+
+static void __init mcs814x_alloc_gc(void __iomem *base, unsigned int irq_start,
+ unsigned int num)
+{
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+
+ gc = irq_alloc_generic_chip("mcs814x-intc", 1,
+ irq_start, base, handle_level_irq);
+ if (!gc)
+ panic("unable to allocate generic irq chip");
+
+ ct = gc->chip_types;
+ ct->chip.irq_ack = irq_gc_unmask_enable_reg;
+ ct->chip.irq_mask = irq_gc_mask_clr_bit;
+ ct->chip.irq_unmask = irq_gc_mask_set_bit;
+ ct->regs.mask = MCS814X_IRQ_MASK;
+ ct->regs.enable = MCS814X_IRQ_ICR;
+
+ irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
+ IRQ_NOREQUEST, 0);
+
+ /* Clear all interrupts */
+ writel_relaxed(0xffffffff, base + MCS814X_IRQ_ICR);
+}
+
+asmlinkage void __exception_irq_entry mcs814x_handle_irq(struct pt_regs *regs)
+{
+ u32 status, irq;
+
+ do {
+ /* read the status register */
+ status = __raw_readl(mcs814x_intc_base + MCS814X_IRQ_STS0);
+ if (!status)
+ break;
+
+ irq = ffs(status) - 1;
+ status |= (1 << irq);
+ /* clear the interrupt */
+ __raw_writel(status, mcs814x_intc_base + MCS814X_IRQ_STS0);
+ /* call the generic handler */
+ handle_IRQ(irq, regs);
+
+ } while (1);
+}
+
+static const struct of_device_id mcs814x_intc_ids[] = {
+ { .compatible = "moschip,mcs814x-intc" },
+ { /* sentinel */ },
+};
+
+void __init mcs814x_of_irq_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, mcs814x_intc_ids);
+ if (!np)
+ panic("unable to find compatible intc node in dtb\n");
+
+ mcs814x_intc_base = of_iomap(np, 0);
+ if (!mcs814x_intc_base)
+ panic("unable to map intc cpu registers\n");
+
+ irq_domain_add_simple(np, 32, 0, &irq_generic_chip_ops, NULL);
+
+ of_node_put(np);
+
+ mcs814x_alloc_gc(mcs814x_intc_base, 0, 32);
+}
+
--- /dev/null
+/*
+ * Moschip MCS814x timer routines
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2
+ */
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/timex.h>
+#include <linux/irq.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <asm/mach/time.h>
+#include <mach/mcs814x.h>
+
+/* Timer block registers */
+#define TIMER_VAL 0x00
+#define TIMER_CTL 0x04
+#define TIMER_CTL_EN 0x01
+#define TIMER_CTL_DBG 0x02
+
+static u32 last_reload;
+static u32 timer_correct;
+static u32 clock_rate;
+static u32 timer_reload_value;
+static void __iomem *mcs814x_timer_base;
+
+static inline u32 ticks2usecs(u32 x)
+{
+ return x / (clock_rate / 1000000);
+}
+
+/*
+ * Returns number of ms since last clock interrupt. Note that interrupts
+ * will have been disabled by do_gettimeoffset()
+ */
+static u32 mcs814x_gettimeoffset(void)
+{
+ u32 ticks = readl_relaxed(mcs814x_timer_base + TIMER_VAL);
+
+ if (ticks < last_reload)
+ return ticks2usecs(ticks + (u32)(0xffffffff - last_reload));
+ else
+ return ticks2usecs(ticks - last_reload);
+}
+
+
+static irqreturn_t mcs814x_timer_interrupt(int irq, void *dev_id)
+{
+ u32 count = readl_relaxed(mcs814x_timer_base + TIMER_VAL);
+
+ /* take into account delay up to this moment */
+ last_reload = count + timer_correct + timer_reload_value;
+
+ if (last_reload < timer_reload_value) {
+ last_reload = timer_reload_value;
+ } else {
+ if (timer_correct == 0)
+ timer_correct = readl_relaxed(mcs814x_timer_base + TIMER_VAL) - count;
+ }
+ writel_relaxed(last_reload, mcs814x_timer_base + TIMER_VAL);
+
+ timer_tick();
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction mcs814x_timer_irq = {
+ .name = "mcs814x-timer",
+ .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+ .handler = mcs814x_timer_interrupt,
+};
+
+static struct of_device_id mcs814x_timer_ids[] = {
+ { .compatible = "moschip,mcs814x-timer" },
+ { /* sentinel */ },
+};
+
+static void __init mcs814x_of_timer_init(void)
+{
+ struct device_node *np;
+ const unsigned int *intspec;
+
+ np = of_find_matching_node(NULL, mcs814x_timer_ids);
+ if (!np)
+ panic("unable to find compatible timer node in dtb");
+
+ mcs814x_timer_base = of_iomap(np, 0);
+ if (!mcs814x_timer_base)
+ panic("unable to remap timer cpu registers");
+
+ intspec = of_get_property(np, "interrupts", NULL);
+ if (!intspec)
+ panic("no interrupts property for timer");
+
+ mcs814x_timer_irq.irq = be32_to_cpup(intspec);
+}
+
+void __init mcs814x_timer_init(void)
+{
+ struct clk *clk;
+
+ arch_gettimeoffset = mcs814x_gettimeoffset;
+
+ clk = clk_get_sys("timer0", NULL);
+ if (IS_ERR_OR_NULL(clk))
+ panic("unable to get timer0 clock");
+
+ clock_rate = clk_get_rate(clk);
+
+ mcs814x_of_timer_init();
+
+ pr_info("Timer frequency: %d (kHz)\n", clock_rate / 1000);
+
+ timer_reload_value = 0xffffffff - (clock_rate / HZ);
+
+ /* disable timer */
+ writel_relaxed(~TIMER_CTL_EN, mcs814x_timer_base + TIMER_CTL);
+ writel_relaxed(timer_reload_value, mcs814x_timer_base + TIMER_VAL);
+ last_reload = timer_reload_value;
+
+ setup_irq(mcs814x_timer_irq.irq, &mcs814x_timer_irq);
+ /* enable timer, stop timer in debug mode */
+ writel_relaxed(TIMER_CTL_EN | TIMER_CTL_DBG,
+ mcs814x_timer_base + TIMER_CTL);
+}
--- /dev/null
+/*
+ * RNG driver for Moschip MCS814x SoC
+ *
+ * Copyright 2012 (C), Florian Fainelli <florian@openwrt.org>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/platform_device.h>
+#include <linux/hw_random.h>
+#include <linux/io.h>
+#include <linux/of.h>
+
+#define STAT 0x00
+#define RND 0x04
+
+struct mcs814x_rng_priv {
+ void __iomem *regs;
+};
+
+static int mcs814x_rng_data_read(struct hwrng *rng, u32 *buffer)
+{
+ struct mcs814x_rng_priv *priv = (struct mcs814x_rng_priv *)rng->priv;
+
+ *buffer = readl_relaxed(priv->regs + RND);
+
+ return 4;
+}
+
+static int mcs814x_rng_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct mcs814x_rng_priv *priv;
+ struct hwrng *rng;
+ int ret;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ rng = kzalloc(sizeof(*rng), GFP_KERNEL);
+ if (!rng) {
+ ret = -ENOMEM;
+ goto out_priv;
+ }
+
+ platform_set_drvdata(pdev, rng);
+ rng->priv = (unsigned long)priv;
+ rng->name = pdev->name;
+ rng->data_read = mcs814x_rng_data_read;
+
+ priv->regs = devm_request_and_ioremap(&pdev->dev, res);
+ if (!priv->regs) {
+ ret = -ENOMEM;
+ goto out_rng;
+ }
+
+ ret = hwrng_register(rng);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register hwrng driver\n");
+ goto out;
+ }
+
+ dev_info(&pdev->dev, "registered\n");
+
+ return ret;
+
+out_rng:
+ platform_set_drvdata(pdev, NULL);
+ kfree(rng);
+out_priv:
+ kfree(priv);
+out:
+ return ret;
+}
+
+static int mcs814x_rng_remove(struct platform_device *pdev)
+{
+ struct hwrng *rng = platform_get_drvdata(pdev);
+ struct mcs814x_rng_priv *priv = (struct mcs814x_rng_priv *)rng->priv;
+
+ hwrng_unregister(rng);
+ kfree(priv);
+ kfree(rng);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id mcs814x_rng_ids[] = {
+ { .compatible = "moschip,mcs814x-rng", },
+ { /* sentinel */ },
+};
+
+static struct platform_driver mcs814x_rng_driver = {
+ .driver = {
+ .name = "mcs814x-rng",
+ .owner = THIS_MODULE,
+ .of_match_table = mcs814x_rng_ids,
+ },
+ .probe = mcs814x_rng_probe,
+ .remove = mcs814x_rng_remove,
+};
+
+module_platform_driver(mcs814x_rng_driver);
+
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("H/W Random Number Generator (RNG) for Moschip MCS814x");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Moschip MCS814x GPIO support
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under the GPLv2
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+struct mcs814x_gpio_chip {
+ void __iomem *regs;
+ struct gpio_chip chip;
+};
+
+#define GPIO_PIN 0x00
+#define GPIO_DIR 0x04
+
+#define to_mcs814x_gpio_chip(x) container_of(x, struct mcs814x_gpio_chip, chip)
+
+static int mcs814x_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
+
+ return readl_relaxed(mcs814x->regs + GPIO_PIN) & (1 << offset);
+}
+
+static void mcs814x_gpio_set(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
+ u32 mask;
+
+ mask = readl_relaxed(mcs814x->regs + GPIO_PIN);
+ if (value)
+ mask |= (1 << offset);
+ else
+ mask &= ~(1 << offset);
+ writel_relaxed(mask, mcs814x->regs + GPIO_PIN);
+}
+
+static int mcs814x_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
+ u32 mask;
+
+ mask = readl_relaxed(mcs814x->regs + GPIO_DIR);
+ mask &= ~(1 << offset);
+ writel_relaxed(mask, mcs814x->regs + GPIO_DIR);
+
+ return 0;
+}
+
+static int mcs814x_gpio_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct mcs814x_gpio_chip *mcs814x = to_mcs814x_gpio_chip(chip);
+ u32 mask;
+
+ mask = readl_relaxed(mcs814x->regs + GPIO_DIR);
+ mask |= (1 << offset);
+ writel_relaxed(mask, mcs814x->regs + GPIO_DIR);
+
+ return 0;
+}
+
+static int mcs814x_gpio_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct mcs814x_gpio_chip *mcs814x_chip;
+ int ret;
+ const unsigned int *num_gpios;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ num_gpios = of_get_property(pdev->dev.of_node, "num-gpios", NULL);
+ if (!num_gpios)
+ dev_err(&pdev->dev, "FIXME: no num-gpios property\n");
+
+ mcs814x_chip = kzalloc(sizeof(*mcs814x_chip), GFP_KERNEL);
+ if (!mcs814x_chip)
+ return -ENOMEM;
+
+ mcs814x_chip->regs = devm_request_and_ioremap(&pdev->dev, res);
+ if (!mcs814x_chip->regs) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ platform_set_drvdata(pdev, mcs814x_chip);
+
+#ifdef CONFIG_OF_GPIO
+ mcs814x_chip->chip.of_node = pdev->dev.of_node;
+#endif
+
+ mcs814x_chip->chip.label = pdev->name;
+ mcs814x_chip->chip.get = mcs814x_gpio_get;
+ mcs814x_chip->chip.set = mcs814x_gpio_set;
+ mcs814x_chip->chip.direction_input = mcs814x_gpio_direction_input;
+ mcs814x_chip->chip.direction_output = mcs814x_gpio_direction_output;
+ mcs814x_chip->chip.ngpio = be32_to_cpup(num_gpios);
+ /* we want dynamic base allocation */
+ mcs814x_chip->chip.base = -1;
+
+ ret = gpiochip_add(&mcs814x_chip->chip);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register gpiochip\n");
+ goto out;
+ }
+
+ return 0;
+
+out:
+ platform_set_drvdata(pdev, NULL);
+ kfree(mcs814x_chip);
+ return ret;
+}
+
+static struct of_device_id mcs814x_gpio_ids[] = {
+ { .compatible = "moschip,mcs814x-gpio" },
+ { /* sentinel */ },
+};
+
+static struct platform_driver mcs814x_gpio_driver = {
+ .driver = {
+ .name = "mcs814x-gpio",
+ .owner = THIS_MODULE,
+ .of_match_table = mcs814x_gpio_ids,
+ },
+ .probe = mcs814x_gpio_probe,
+};
+
+int __init mcs814x_gpio_init(void)
+{
+ return platform_driver_register(&mcs814x_gpio_driver);
+}
+postcore_initcall(mcs814x_gpio_init);
--- /dev/null
+config NUPORT_ETHERNET_DRIVER
+ tristate "MCS8140 Ethernet driver"
+ depends on ETHERNET && ARCH_MCS814X
+ help
--- /dev/null
+obj-$(CONFIG_NUPORT_ETHERNET_DRIVER) += mcs8140.o
+
+mcs8140-objs := nuport_mac.o
--- /dev/null
+/*
+ * Moschip MCS8140 Ethernet MAC driver
+ *
+ * Copyright (C) 2003, Moschip Semiconductors
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * Licensed under GPLv2
+ */
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_mdio.h>
+#include <linux/of_net.h>
+#include <linux/irq.h>
+#include <linux/err.h>
+#include <linux/phy.h>
+#include <linux/clk.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/unaligned.h>
+#include <asm/sizes.h>
+
+/* Hardware registers */
+#define MAC_BASE_ADDR ((priv->mac_base))
+
+#define CTRL_REG (MAC_BASE_ADDR)
+#define MII_BUSY (1 << 0)
+#define MII_WRITE (1 << 1)
+#define RX_ENABLE (1 << 2)
+#define TX_ENABLE (1 << 3)
+#define DEFER_CHECK (1 << 5)
+#define STRIP_PAD (1 << 8)
+#define DRTRY_DISABLE (1 << 10)
+#define FULL_DUPLEX (1 << 20)
+#define HBD_DISABLE (1 << 28)
+#define MAC_ADDR_HIGH_REG (MAC_BASE_ADDR + 0x04)
+#define MAC_ADDR_LOW_REG (MAC_BASE_ADDR + 0x08)
+#define MII_ADDR_REG (MAC_BASE_ADDR + 0x14)
+#define MII_ADDR_SHIFT (11)
+#define MII_REG_SHIFT (6)
+#define MII_DATA_REG (MAC_BASE_ADDR + 0x18)
+/* Link interrupt registers */
+#define LINK_INT_CSR (MAC_BASE_ADDR + 0xD0)
+#define LINK_INT_EN (1 << 0)
+#define LINK_PHY_ADDR_SHIFT (1)
+#define LINK_PHY_REG_SHIFT (6)
+#define LINK_BIT_UP_SHIFT (11)
+#define LINK_UP (1 << 16)
+#define LINK_INT_POLL_TIME (MAC_BASE_ADDR + 0xD4)
+#define LINK_POLL_MASK ((1 << 20) - 1)
+
+#define DMA_CHAN_WIDTH 32
+#define DMA_RX_CHAN 0
+#define DMA_TX_CHAN 2
+
+/* Receive DMA registers */
+#define RX_DMA_BASE ((priv->dma_base) + \
+ (DMA_CHAN_WIDTH * DMA_RX_CHAN))
+#define RX_BUFFER_ADDR (RX_DMA_BASE + 0x00)
+#define RX_MAX_BYTES (RX_DMA_BASE + 0x04)
+#define RX_ACT_BYTES (RX_DMA_BASE + 0x08)
+#define RX_START_DMA (RX_DMA_BASE + 0x0C)
+#define RX_DMA_ENABLE (1 << 0)
+#define RX_DMA_RESET (1 << 1)
+#define RX_DMA_STATUS_FIFO (1 << 12)
+#define RX_DMA_ENH (RX_DMA_BASE + 0x14)
+#define RX_DMA_INT_ENABLE (1 << 1)
+
+/* Transmit DMA registers */
+#define TX_DMA_BASE ((priv->dma_base) + \
+ (DMA_CHAN_WIDTH * DMA_TX_CHAN))
+#define TX_BUFFER_ADDR (TX_DMA_BASE + 0x00)
+#define TX_PKT_BYTES (TX_DMA_BASE + 0x04)
+#define TX_BYTES_SENT (TX_DMA_BASE + 0x08)
+#define TX_START_DMA (TX_DMA_BASE + 0x0C)
+#define TX_DMA_ENABLE (1 << 0)
+#define TX_DMA_START_FRAME (1 << 2)
+#define TX_DMA_END_FRAME (1 << 3)
+#define TX_DMA_PAD_DISABLE (1 << 8)
+#define TX_DMA_CRC_DISABLE (1 << 9)
+#define TX_DMA_FIFO_FULL (1 << 16)
+#define TX_DMA_FIFO_EMPTY (1 << 17)
+#define TX_DMA_STATUS_AVAIL (1 << 18)
+#define TX_DMA_RESET (1 << 24)
+#define TX_DMA_STATUS (TX_DMA_BASE + 0x10)
+#define TX_DMA_ENH (TX_DMA_BASE + 0x14)
+#define TX_DMA_ENH_ENABLE (1 << 0)
+#define TX_DMA_INT_FIFO (1 << 1)
+
+#define RX_ALLOC_SIZE SZ_2K
+#define MAX_ETH_FRAME_SIZE 1536
+#define RX_SKB_TAILROOM 128
+#define RX_SKB_HEADROOM (RX_ALLOC_SIZE - \
+ (MAX_ETH_FRAME_SIZE + RX_SKB_TAILROOM) + 0)
+
+ /* WDT Late COL Lenght COL Type */
+#define ERROR_FILTER_MASK ((1<<14) | (1<<15) | (1<<16) | (1<<17) | (0<<18) | \
+ /* MII Dribbling CRC Len/type Control */\
+ (1<<19) | (1<<20) | (1<<21) | (0<<24) | (1<<25) | \
+ /* Unsup Missed */\
+ (1<<26) | (0<<31))
+#define TX_RING_SIZE 30
+#define RX_RING_SIZE 30
+
+static inline u32 nuport_mac_readl(void __iomem *reg)
+{
+ return readl_relaxed(reg);
+}
+
+static inline u8 nuport_mac_readb(void __iomem *reg)
+{
+ return readb_relaxed(reg);
+}
+
+static inline void nuport_mac_writel(u32 value, void __iomem *reg)
+{
+ writel_relaxed(value, reg);
+}
+
+static inline void nuport_mac_writeb(u8 value, void __iomem *reg)
+{
+ writel_relaxed(value, reg);
+}
+
+/* MAC private data */
+struct nuport_mac_priv {
+ spinlock_t lock;
+
+ void __iomem *mac_base;
+ void __iomem *dma_base;
+
+ int rx_irq;
+ int tx_irq;
+ int link_irq;
+ struct clk *emac_clk;
+ struct clk *ephy_clk;
+
+ /* Transmit buffers */
+ struct sk_buff *tx_skb[TX_RING_SIZE];
+ dma_addr_t tx_addr;
+ unsigned int valid_txskb[TX_RING_SIZE];
+ unsigned int cur_tx;
+ unsigned int dma_tx;
+ unsigned int tx_full;
+
+ /* Receive buffers */
+ struct sk_buff *rx_skb[RX_RING_SIZE];
+ dma_addr_t rx_addr;
+ unsigned int irq_rxskb[RX_RING_SIZE];
+ int pkt_len[RX_RING_SIZE];
+ unsigned int cur_rx;
+ unsigned int dma_rx;
+ unsigned int rx_full;
+
+ unsigned int first_pkt;
+
+ /* Private data */
+ struct napi_struct napi;
+ struct net_device *dev;
+ struct platform_device *pdev;
+ struct mii_bus *mii_bus;
+ struct phy_device *phydev;
+ struct device_node *phy_node;
+ phy_interface_t phy_interface;
+ int old_link;
+ int old_duplex;
+ u32 msg_level;
+ unsigned int buffer_shifting_len;
+};
+
+static inline int nuport_mac_mii_busy_wait(struct nuport_mac_priv *priv)
+{
+ unsigned long curr;
+ unsigned long finish = jiffies + 3 * HZ;
+
+ do {
+ curr = jiffies;
+ if (!(nuport_mac_readl(MII_ADDR_REG) & MII_BUSY))
+ return 0;
+ cpu_relax();
+ } while (!time_after_eq(curr, finish));
+
+ return -EBUSY;
+}
+
+/* Read from PHY registers */
+static int nuport_mac_mii_read(struct mii_bus *bus,
+ int mii_id, int regnum)
+{
+ struct net_device *dev = bus->priv;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ int ret;
+ u32 val = 0;
+
+ ret = nuport_mac_mii_busy_wait(priv);
+ if (ret)
+ return ret;
+
+ val |= (mii_id << MII_ADDR_SHIFT) | (regnum << MII_REG_SHIFT) | MII_BUSY;
+ nuport_mac_writel(val, MII_ADDR_REG);
+ ret = nuport_mac_mii_busy_wait(priv);
+ if (ret)
+ return ret;
+
+ return nuport_mac_readl(MII_DATA_REG);
+}
+
+static int nuport_mac_mii_write(struct mii_bus *bus, int mii_id,
+ int regnum, u16 value)
+{
+ struct net_device *dev = bus->priv;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ int ret;
+ u32 val = 0;
+
+ ret = nuport_mac_mii_busy_wait(priv);
+ if (ret)
+ return ret;
+
+ val |= (mii_id << MII_ADDR_SHIFT) | (regnum << MII_REG_SHIFT);
+ val |= MII_BUSY | MII_WRITE;
+ nuport_mac_writel(value, MII_DATA_REG);
+ nuport_mac_writel(val, MII_ADDR_REG);
+
+ return nuport_mac_mii_busy_wait(priv);
+}
+
+static int nuport_mac_mii_reset(struct mii_bus *bus)
+{
+ return 0;
+}
+
+static int nuport_mac_start_tx_dma(struct nuport_mac_priv *priv,
+ struct sk_buff *skb)
+{
+ u32 reg;
+ unsigned int timeout = 2048;
+
+ while (timeout--) {
+ reg = nuport_mac_readl(TX_START_DMA);
+ if (!(reg & TX_DMA_ENABLE)) {
+ netdev_dbg(priv->dev, "dma ready\n");
+ break;
+ }
+ cpu_relax();
+ }
+
+ if (!timeout)
+ return -EBUSY;
+
+ priv->tx_addr = dma_map_single(&priv->pdev->dev, skb->data,
+ skb->len, DMA_TO_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, priv->tx_addr))
+ return -ENOMEM;
+
+ /* enable enhanced mode */
+ nuport_mac_writel(TX_DMA_ENH_ENABLE, TX_DMA_ENH);
+ nuport_mac_writel(priv->tx_addr, TX_BUFFER_ADDR);
+ nuport_mac_writel((skb->len) - 1, TX_PKT_BYTES);
+ wmb();
+ reg = TX_DMA_ENABLE | TX_DMA_START_FRAME | TX_DMA_END_FRAME;
+ nuport_mac_writel(reg, TX_START_DMA);
+
+ return 0;
+}
+
+static void nuport_mac_reset_tx_dma(struct nuport_mac_priv *priv)
+{
+ u32 reg;
+
+ reg = nuport_mac_readl(TX_START_DMA);
+ reg |= TX_DMA_RESET;
+ nuport_mac_writel(reg, TX_START_DMA);
+}
+
+static int nuport_mac_start_rx_dma(struct nuport_mac_priv *priv,
+ struct sk_buff *skb)
+{
+ u32 reg;
+ unsigned int timeout = 2048;
+
+ while (timeout--) {
+ reg = nuport_mac_readl(RX_START_DMA);
+ if (!(reg & RX_DMA_ENABLE)) {
+ netdev_dbg(priv->dev, "dma ready\n");
+ break;
+ }
+ cpu_relax();
+ }
+
+ if (!timeout)
+ return -EBUSY;
+
+ priv->rx_addr = dma_map_single(&priv->pdev->dev, skb->data,
+ RX_ALLOC_SIZE, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&priv->pdev->dev, priv->rx_addr))
+ return -ENOMEM;
+
+ nuport_mac_writel(priv->rx_addr, RX_BUFFER_ADDR);
+ wmb();
+ nuport_mac_writel(RX_DMA_ENABLE, RX_START_DMA);
+
+ return 0;
+}
+
+static void nuport_mac_reset_rx_dma(struct nuport_mac_priv *priv)
+{
+ u32 reg;
+
+ reg = nuport_mac_readl(RX_START_DMA);
+ reg |= RX_DMA_RESET;
+ nuport_mac_writel(reg, RX_START_DMA);
+}
+
+/* I suppose this might do something, but I am not sure actually */
+static void nuport_mac_disable_rx_dma(struct nuport_mac_priv *priv)
+{
+ u32 reg;
+
+ reg = nuport_mac_readl(RX_DMA_ENH);
+ reg &= ~RX_DMA_INT_ENABLE;
+ nuport_mac_writel(reg, RX_DMA_ENH);
+}
+
+static void nuport_mac_enable_rx_dma(struct nuport_mac_priv *priv)
+{
+ u32 reg;
+
+ reg = nuport_mac_readl(RX_DMA_ENH);
+ reg |= RX_DMA_INT_ENABLE;
+ nuport_mac_writel(reg, RX_DMA_ENH);
+}
+
+/* Add packets to the transmit queue */
+static int nuport_mac_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ unsigned long flags;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ int ret;
+
+ if (netif_queue_stopped(dev)) {
+ netdev_warn(dev, "netif queue was stopped, restarting\n");
+ netif_start_queue(dev);
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (priv->first_pkt) {
+ ret = nuport_mac_start_tx_dma(priv, skb);
+ if (ret) {
+ netif_stop_queue(dev);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ netdev_err(dev, "transmit path busy\n");
+ return NETDEV_TX_BUSY;
+ }
+ priv->first_pkt = 0;
+ }
+
+ priv->tx_skb[priv->cur_tx] = skb;
+ dev->stats.tx_bytes += skb->len;
+ dev->stats.tx_packets++;
+ priv->valid_txskb[priv->cur_tx] = 1;
+ priv->cur_tx++;
+ dev->trans_start = jiffies;
+
+ if (priv->cur_tx >= TX_RING_SIZE)
+ priv->cur_tx = 0;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (priv->valid_txskb[priv->cur_tx]) {
+ priv->tx_full = 1;
+ netdev_err(dev, "stopping queue\n");
+ netif_stop_queue(dev);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+static void nuport_mac_adjust_link(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ struct phy_device *phydev = priv->phydev;
+ unsigned int status_changed = 0;
+ u32 reg;
+
+ BUG_ON(!phydev);
+
+ if (priv->old_link != phydev->link) {
+ status_changed = 1;
+ priv->old_link = phydev->link;
+ }
+
+ if (phydev->link && (priv->old_duplex != phydev->duplex)) {
+ reg = nuport_mac_readl(CTRL_REG);
+ if (phydev->duplex == DUPLEX_FULL)
+ reg |= DUPLEX_FULL;
+ else
+ reg &= ~DUPLEX_FULL;
+ nuport_mac_writel(reg, CTRL_REG);
+
+ status_changed = 1;
+ priv->old_duplex = phydev->duplex;
+ }
+
+ if (!status_changed)
+ return;
+
+ pr_info("%s: link %s", dev->name, phydev->link ?
+ "UP" : "DOWN");
+ if (phydev->link) {
+ pr_cont(" - %d/%s", phydev->speed,
+ phydev->duplex == DUPLEX_FULL ? "full" : "half");
+ }
+ pr_cont("\n");
+}
+
+static irqreturn_t nuport_mac_link_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ u32 reg;
+ u8 phy_addr;
+ unsigned long flags;
+ irqreturn_t ret = IRQ_HANDLED;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ reg = nuport_mac_readl(LINK_INT_CSR);
+ phy_addr = (reg >> LINK_PHY_ADDR_SHIFT) & (PHY_MAX_ADDR - 1);
+
+ if (phy_addr != priv->phydev->addr) {
+ netdev_err(dev, "spurious PHY irq (phy: %d)\n", phy_addr);
+ ret = IRQ_NONE;
+ goto out;
+ }
+
+ priv->phydev->link = (reg & LINK_UP);
+ nuport_mac_adjust_link(dev);
+
+out:
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return ret;
+}
+
+static irqreturn_t nuport_mac_tx_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ struct sk_buff *skb;
+ unsigned long flags;
+ int ret;
+ u32 reg;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ /* clear status word available if ready */
+ reg = nuport_mac_readl(TX_START_DMA);
+ if (reg & TX_DMA_STATUS_AVAIL) {
+ nuport_mac_writel(reg, TX_START_DMA);
+ reg = nuport_mac_readl(TX_DMA_STATUS);
+
+ if (reg & 1)
+ dev->stats.tx_errors++;
+ } else
+ netdev_dbg(dev, "no status word: %08x\n", reg);
+
+ skb = priv->tx_skb[priv->dma_tx];
+ priv->tx_skb[priv->dma_tx] = NULL;
+ priv->valid_txskb[priv->dma_tx] = 0;
+ dma_unmap_single(&priv->pdev->dev, priv->rx_addr, skb->len,
+ DMA_TO_DEVICE);
+ dev_kfree_skb_irq(skb);
+
+ priv->dma_tx++;
+ if (priv->dma_tx >= TX_RING_SIZE)
+ priv->dma_tx = 0;
+
+ if (!priv->valid_txskb[priv->dma_tx])
+ priv->first_pkt = 1;
+ else {
+ ret = nuport_mac_start_tx_dma(priv, priv->tx_skb[priv->dma_tx]);
+ if (ret)
+ netdev_err(dev, "failed to restart TX dma\n");
+ }
+
+ if (priv->tx_full) {
+ netdev_dbg(dev, "restarting transmit queue\n");
+ netif_wake_queue(dev);
+ priv->tx_full = 0;
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+static unsigned int nuport_mac_has_work(struct nuport_mac_priv *priv)
+{
+ unsigned int i;
+
+ for (i = 0; i < RX_RING_SIZE; i++)
+ if (priv->rx_skb[i])
+ return 1;
+
+ return 0;
+}
+
+static irqreturn_t nuport_mac_rx_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (!priv->rx_full) {
+ priv->pkt_len[priv->dma_rx] = nuport_mac_readl(RX_ACT_BYTES) - 4;
+ priv->irq_rxskb[priv->dma_rx] = 0;
+ priv->dma_rx++;
+
+ if (priv->dma_rx >= RX_RING_SIZE)
+ priv->dma_rx = 0;
+ } else
+ priv->rx_full = 0;
+
+ if (priv->irq_rxskb[priv->dma_rx] == 1) {
+ ret = nuport_mac_start_rx_dma(priv, priv->rx_skb[priv->dma_rx]);
+ if (ret)
+ netdev_err(dev, "failed to start rx dma\n");
+ } else {
+ priv->rx_full = 1;
+ netdev_dbg(dev, "RX ring full\n");
+ }
+
+ if (likely(nuport_mac_has_work(priv))) {
+ /* find a way to disable DMA rx irq */
+ nuport_mac_disable_rx_dma(priv);
+ napi_schedule(&priv->napi);
+ }
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+/* Process received packets in tasklet */
+static int nuport_mac_rx(struct net_device *dev, int limit)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ struct sk_buff *skb;
+ int len, status;
+ int count = 0;
+
+ while (count < limit && !priv->irq_rxskb[priv->cur_rx]) {
+ skb = priv->rx_skb[priv->cur_rx];
+ len = priv->pkt_len[priv->cur_rx];
+
+ /* Remove 2 bytes added by RX buffer shifting */
+ len = len - priv->buffer_shifting_len;
+ skb->data = skb->data + priv->buffer_shifting_len;
+
+ /* Get packet status */
+ status = get_unaligned((u32 *) (skb->data + len));
+
+ dma_unmap_single(&priv->pdev->dev, priv->rx_addr, skb->len,
+ DMA_FROM_DEVICE);
+
+ /* packet filter failed */
+ if (!(status & (1 << 30))) {
+ dev_kfree_skb_irq(skb);
+ goto exit;
+ }
+
+ /* missed frame */
+ if (status & (1 << 31)) {
+ dev->stats.rx_missed_errors++;
+ dev_kfree_skb_irq(skb);
+ goto exit;
+ }
+
+ /* Not ethernet type */
+ if ((!(status & (1 << 18))) || (status & ERROR_FILTER_MASK))
+ dev->stats.rx_errors++;
+
+ if (len > MAX_ETH_FRAME_SIZE) {
+ dev_kfree_skb_irq(skb);
+ goto exit;
+ } else
+ skb_put(skb, len);
+
+ skb->protocol = eth_type_trans(skb, dev);
+ dev->stats.rx_packets++;
+
+ if (status & (1 << 29))
+ skb->pkt_type = PACKET_OTHERHOST;
+ if (status & (1 << 27))
+ skb->pkt_type = PACKET_MULTICAST;
+ if (status & (1 << 28))
+ skb->pkt_type = PACKET_BROADCAST;
+
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ /* Pass the received packet to network layer */
+ status = netif_receive_skb(skb);
+ if (status != NET_RX_DROP)
+ dev->stats.rx_bytes += len - 4; /* Without CRC */
+ else
+ dev->stats.rx_dropped++;
+
+ dev->last_rx = jiffies;
+
+exit:
+ skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE);
+ if (!skb)
+ goto out;
+
+ skb_reserve(skb, RX_SKB_HEADROOM);
+ priv->rx_skb[priv->cur_rx] = skb;
+ priv->irq_rxskb[priv->cur_rx] = 1;
+ priv->cur_rx++;
+
+ if (priv->cur_rx >= RX_RING_SIZE)
+ priv->cur_rx = 0;
+ count++;
+ }
+out:
+ return count;
+}
+
+static int nuport_mac_poll(struct napi_struct *napi, int budget)
+{
+ struct nuport_mac_priv *priv =
+ container_of(napi, struct nuport_mac_priv, napi);
+ struct net_device *dev = priv->dev;
+ int work_done;
+
+ work_done = nuport_mac_rx(dev, budget);
+
+ if (work_done < budget) {
+ napi_complete(napi);
+ nuport_mac_enable_rx_dma(priv);
+ }
+
+ return work_done;
+}
+
+static void nuport_mac_init_tx_ring(struct nuport_mac_priv *priv)
+{
+ int i;
+
+ priv->cur_tx = priv->dma_tx = priv->tx_full = 0;
+ for (i = 0; i < TX_RING_SIZE; i++) {
+ priv->tx_skb[i] = NULL;
+ priv->valid_txskb[i] = 0;
+ }
+ priv->first_pkt = 1;
+}
+
+static int nuport_mac_init_rx_ring(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ struct sk_buff *skb;
+ int i;
+
+ priv->cur_rx = priv->dma_rx = priv->rx_full = 0;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ skb = netdev_alloc_skb(dev, RX_ALLOC_SIZE);
+ if (!skb)
+ return -ENOMEM;
+ skb_reserve(skb, RX_SKB_HEADROOM);
+ priv->rx_skb[i] = skb;
+ priv->irq_rxskb[i] = 1;
+ }
+
+ return 0;
+}
+
+static void nuport_mac_free_rx_ring(struct nuport_mac_priv *priv)
+{
+ int i;
+
+ for (i = 0; i < RX_RING_SIZE; i++) {
+ if (!priv->rx_skb[i])
+ continue;
+
+ dev_kfree_skb(priv->rx_skb[i]);
+ priv->rx_skb[i] = NULL;
+ }
+
+ if (priv->rx_addr)
+ dma_unmap_single(&priv->pdev->dev, priv->rx_addr, RX_ALLOC_SIZE,
+ DMA_TO_DEVICE);
+}
+
+static void nuport_mac_read_mac_address(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ int i;
+
+ for (i = 0; i < 4; i++)
+ dev->dev_addr[i] = nuport_mac_readb(MAC_ADDR_LOW_REG + i);
+ dev->dev_addr[4] = nuport_mac_readb(MAC_ADDR_HIGH_REG);
+ dev->dev_addr[5] = nuport_mac_readb(MAC_ADDR_HIGH_REG + 1);
+
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ dev_info(&priv->pdev->dev, "using random address\n");
+ random_ether_addr(dev->dev_addr);
+ }
+}
+
+static int nuport_mac_change_mac_address(struct net_device *dev, void *mac_addr)
+{
+ struct sockaddr *addr = mac_addr;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ unsigned long *temp = (unsigned long *)dev->dev_addr;
+ u32 high, low;
+
+ if (netif_running(dev))
+ return -EBUSY;
+
+ memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
+
+ spin_lock_irq(&priv->lock);
+
+ nuport_mac_writel(*temp, MAC_ADDR_LOW_REG);
+ temp = (unsigned long *)(dev->dev_addr + 4);
+ nuport_mac_writel(*temp, MAC_ADDR_HIGH_REG);
+
+ low = nuport_mac_readl(MAC_ADDR_LOW_REG);
+ high = nuport_mac_readl(MAC_ADDR_HIGH_REG);
+
+ spin_unlock_irq(&priv->lock);
+
+ return 0;
+}
+
+static int nuport_mac_open(struct net_device *dev)
+{
+ int ret;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ unsigned long flags;
+ u32 reg = 0;
+
+ ret = clk_enable(priv->emac_clk);
+ if (ret) {
+ netdev_err(dev, "failed to enable EMAC clock\n");
+ return ret;
+ }
+
+ /* Set MAC into full duplex mode by default */
+ reg |= RX_ENABLE | TX_ENABLE;
+ reg |= DEFER_CHECK | STRIP_PAD | DRTRY_DISABLE;
+ reg |= FULL_DUPLEX | HBD_DISABLE;
+ nuport_mac_writel(reg, CTRL_REG);
+
+ /* set mac address in hardware in case it was not already */
+ nuport_mac_change_mac_address(dev, dev->dev_addr);
+
+ ret = request_irq(priv->link_irq, &nuport_mac_link_interrupt,
+ 0, dev->name, dev);
+ if (ret) {
+ netdev_err(dev, "unable to request link interrupt\n");
+ goto out_emac_clk;
+ }
+
+ ret = request_irq(priv->tx_irq, &nuport_mac_tx_interrupt,
+ 0, dev->name, dev);
+ if (ret) {
+ netdev_err(dev, "unable to request rx interrupt\n");
+ goto out_link_irq;
+ }
+
+ /* Enable link interrupt monitoring for our PHY address */
+ reg = LINK_INT_EN | (priv->phydev->addr << LINK_PHY_ADDR_SHIFT);
+ /* MII_BMSR register to be watched */
+ reg |= (1 << LINK_PHY_REG_SHIFT);
+ /* BMSR_STATUS to be watched in particular */
+ reg |= (2 << LINK_BIT_UP_SHIFT);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ nuport_mac_writel(reg, LINK_INT_CSR);
+ nuport_mac_writel(LINK_POLL_MASK, LINK_INT_POLL_TIME);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ phy_start(priv->phydev);
+
+ ret = request_irq(priv->rx_irq, &nuport_mac_rx_interrupt,
+ 0, dev->name, dev);
+ if (ret) {
+ netdev_err(dev, "unable to request tx interrupt\n");
+ goto out_tx_irq;
+ }
+
+ netif_start_queue(dev);
+
+ nuport_mac_init_tx_ring(priv);
+
+ ret = nuport_mac_init_rx_ring(dev);
+ if (ret) {
+ netdev_err(dev, "rx ring init failed\n");
+ goto out_rx_skb;
+ }
+
+ nuport_mac_reset_tx_dma(priv);
+ nuport_mac_reset_rx_dma(priv);
+
+ /* Start RX DMA */
+ spin_lock_irqsave(&priv->lock, flags);
+ ret = nuport_mac_start_rx_dma(priv, priv->rx_skb[0]);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ napi_enable(&priv->napi);
+
+ return ret;
+
+out_rx_skb:
+ nuport_mac_free_rx_ring(priv);
+ free_irq(priv->rx_irq, dev);
+out_tx_irq:
+ free_irq(priv->tx_irq, dev);
+out_link_irq:
+ free_irq(priv->link_irq, dev);
+out_emac_clk:
+ clk_disable(priv->emac_clk);
+ return ret;
+}
+
+static int nuport_mac_close(struct net_device *dev)
+{
+ u32 reg;
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ spin_lock_irq(&priv->lock);
+ reg = nuport_mac_readl(CTRL_REG);
+ reg &= ~(RX_ENABLE | TX_ENABLE);
+ nuport_mac_writel(reg, CTRL_REG);
+
+ napi_disable(&priv->napi);
+ netif_stop_queue(dev);
+
+ free_irq(priv->link_irq, dev);
+ /* disable PHY polling */
+ nuport_mac_writel(0, LINK_INT_CSR);
+ nuport_mac_writel(0, LINK_INT_POLL_TIME);
+ phy_stop(priv->phydev);
+
+ free_irq(priv->tx_irq, dev);
+ free_irq(priv->rx_irq, dev);
+ spin_unlock_irq(&priv->lock);
+
+ nuport_mac_free_rx_ring(priv);
+
+ clk_disable(priv->emac_clk);
+
+ return 0;
+}
+
+static void nuport_mac_tx_timeout(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ unsigned int i;
+
+ netdev_warn(dev, "transmit timeout, attempting recovery\n");
+
+ netdev_info(dev, "TX DMA regs\n");
+ for (i = 0; i < DMA_CHAN_WIDTH; i += 4)
+ netdev_info(dev, "[%02x]: 0x%08x\n", i, nuport_mac_readl(TX_DMA_BASE + i));
+ netdev_info(dev, "RX DMA regs\n");
+ for (i = 0; i < DMA_CHAN_WIDTH; i += 4)
+ netdev_info(dev, "[%02x]: 0x%08x\n", i, nuport_mac_readl(RX_DMA_BASE + i));
+
+ nuport_mac_init_tx_ring(priv);
+ nuport_mac_reset_tx_dma(priv);
+
+ netif_wake_queue(dev);
+}
+
+static int nuport_mac_mii_probe(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+ struct phy_device *phydev = NULL;
+ int ret;
+
+ ret = clk_enable(priv->ephy_clk);
+ if (ret) {
+ netdev_err(dev, "unable to enable ePHY clk\n");
+ return ret;
+ }
+
+ phydev = phy_find_first(priv->mii_bus);
+ if (!phydev) {
+ netdev_err(dev, "no PHYs found\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ phydev = of_phy_connect(dev, priv->phy_node,
+ nuport_mac_adjust_link, 0,
+ priv->phy_interface);
+ if (IS_ERR(phydev)) {
+ netdev_err(dev, "could not attach PHY\n");
+ ret = PTR_ERR(phydev);
+ goto out;
+ }
+
+ phydev->supported &= PHY_BASIC_FEATURES;
+ phydev->advertising = phydev->supported;
+ priv->phydev = phydev;
+ priv->old_link = 1;
+ priv->old_duplex = DUPLEX_FULL;
+
+ dev_info(&priv->pdev->dev, "attached PHY driver [%s] "
+ "(mii_bus:phy_addr=%d)\n",
+ phydev->drv->name, phydev->addr);
+
+ return 0;
+
+out:
+ /* disable the Ethernet PHY clock for the moment */
+ clk_disable(priv->ephy_clk);
+
+ return ret;
+}
+
+static void nuport_mac_ethtool_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *info)
+{
+ strncpy(info->driver, "nuport-mac", sizeof(info->driver));
+ strncpy(info->version, "0.1", sizeof(info->version));
+ strncpy(info->fw_version, "N/A", sizeof(info->fw_version));
+ strncpy(info->bus_info, "internal", sizeof(info->bus_info));
+ info->n_stats = 0;
+ info->testinfo_len = 0;
+ info->regdump_len = 0;
+ info->eedump_len = 0;
+}
+
+static int nuport_mac_ethtool_get_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ if (priv->phydev)
+ return phy_ethtool_gset(priv->phydev, cmd);
+
+ return -EINVAL;
+}
+
+static int nuport_mac_ethtool_set_settings(struct net_device *dev,
+ struct ethtool_cmd *cmd)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ if (priv->phydev)
+ return phy_ethtool_sset(priv->phydev, cmd);
+
+ return -EINVAL;
+}
+
+static void nuport_mac_set_msglevel(struct net_device *dev, u32 msg_level)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ priv->msg_level = msg_level;
+}
+
+static u32 nuport_mac_get_msglevel(struct net_device *dev)
+{
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ return priv->msg_level;
+}
+
+static const struct ethtool_ops nuport_mac_ethtool_ops = {
+ .get_drvinfo = nuport_mac_ethtool_drvinfo,
+ .get_link = ethtool_op_get_link,
+ .get_settings = nuport_mac_ethtool_get_settings,
+ .set_settings = nuport_mac_ethtool_set_settings,
+ .set_msglevel = nuport_mac_set_msglevel,
+ .get_msglevel = nuport_mac_get_msglevel,
+};
+
+static const struct net_device_ops nuport_mac_ops = {
+ .ndo_open = nuport_mac_open,
+ .ndo_stop = nuport_mac_close,
+ .ndo_start_xmit = nuport_mac_start_xmit,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = nuport_mac_change_mac_address,
+ .ndo_tx_timeout = nuport_mac_tx_timeout,
+};
+
+static int __init nuport_mac_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct nuport_mac_priv *priv = NULL;
+ struct resource *regs, *dma;
+ int ret = 0;
+ int rx_irq, tx_irq, link_irq;
+ int i;
+ const unsigned int *intspec;
+
+ dev = alloc_etherdev(sizeof(struct nuport_mac_priv));
+ if (!dev) {
+ dev_err(&pdev->dev, "no memory for net_device\n");
+ return -ENOMEM;
+ }
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ dma = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!regs || !dma) {
+ dev_err(&pdev->dev, "failed to get regs resources\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ rx_irq = platform_get_irq(pdev, 0);
+ tx_irq = platform_get_irq(pdev, 1);
+ link_irq = platform_get_irq(pdev, 2);
+ if (rx_irq < 0 || tx_irq < 0 || link_irq < 0) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ platform_set_drvdata(pdev, dev);
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ priv = netdev_priv(dev);
+ priv->pdev = pdev;
+ priv->dev = dev;
+ spin_lock_init(&priv->lock);
+
+ intspec = of_get_property(pdev->dev.of_node,
+ "nuport-mac,buffer-shifting", NULL);
+ if (!intspec)
+ priv->buffer_shifting_len = 0;
+ else
+ priv->buffer_shifting_len = 2;
+
+ priv->mac_base = devm_request_and_ioremap(&pdev->dev, regs);
+ if (!priv->mac_base) {
+ dev_err(&pdev->dev, "failed to remap regs\n");
+ ret = -ENOMEM;
+ goto out_platform;
+ }
+
+ priv->dma_base = devm_request_and_ioremap(&pdev->dev, dma);
+ if (!priv->dma_base) {
+ dev_err(&pdev->dev, "failed to remap dma-regs\n");
+ ret = -ENOMEM;
+ goto out_platform;
+ }
+
+ priv->emac_clk = clk_get(&pdev->dev, "emac");
+ if (IS_ERR_OR_NULL(priv->emac_clk)) {
+ dev_err(&pdev->dev, "failed to get emac clk\n");
+ ret = PTR_ERR(priv->emac_clk);
+ goto out_platform;
+ }
+
+ priv->ephy_clk = clk_get(&pdev->dev, "ephy");
+ if (IS_ERR_OR_NULL(priv->ephy_clk)) {
+ dev_err(&pdev->dev, "failed to get ephy clk\n");
+ ret = PTR_ERR(priv->ephy_clk);
+ goto out_platform;
+ }
+
+ priv->link_irq = link_irq;
+ priv->rx_irq = rx_irq;
+ priv->tx_irq = tx_irq;
+ priv->msg_level = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK;
+ dev->netdev_ops = &nuport_mac_ops;
+ dev->ethtool_ops = &nuport_mac_ethtool_ops;
+ dev->watchdog_timeo = HZ;
+ dev->flags = IFF_BROADCAST; /* Supports Broadcast */
+ dev->tx_queue_len = TX_RING_SIZE / 2;
+
+ netif_napi_add(dev, &priv->napi, nuport_mac_poll, 64);
+
+ priv->phy_node = of_parse_phandle(pdev->dev.of_node, "phy", 0);
+ if (!priv->phy_node) {
+ dev_err(&pdev->dev, "no associated PHY\n");
+ ret = -ENODEV;
+ goto out;
+ }
+
+ priv->phy_interface = of_get_phy_mode(pdev->dev.of_node);
+ if (priv->phy_interface < 0) {
+ dev_err(&pdev->dev, "invalid PHY mode\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ priv->mii_bus = mdiobus_alloc();
+ if (!priv->mii_bus) {
+ dev_err(&pdev->dev, "mii bus allocation failed\n");
+ goto out;
+ }
+
+ priv->mii_bus->priv = dev;
+ priv->mii_bus->read = nuport_mac_mii_read;
+ priv->mii_bus->write = nuport_mac_mii_write;
+ priv->mii_bus->reset = nuport_mac_mii_reset;
+ priv->mii_bus->name = "nuport-mac-mii";
+ priv->mii_bus->phy_mask = (1 << 0);
+ snprintf(priv->mii_bus->id, MII_BUS_ID_SIZE, "%s", pdev->name);
+ priv->mii_bus->irq = kzalloc(PHY_MAX_ADDR * sizeof(int), GFP_KERNEL);
+ if (!priv->mii_bus->irq) {
+ dev_err(&pdev->dev, "failed to allocate mii_bus irqs\n");
+ ret = -ENOMEM;
+ goto out_mdio;
+ }
+
+ /* We support PHY interrupts routed back to the MAC */
+ for (i = 0; i < PHY_MAX_ADDR; i++)
+ priv->mii_bus->irq[i] = PHY_IGNORE_INTERRUPT;
+
+ ret = of_mdiobus_register(priv->mii_bus, pdev->dev.of_node);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register mii_bus\n");
+ goto out_mdio_irq;
+ }
+
+ ret = nuport_mac_mii_probe(dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to probe MII bus\n");
+ goto out_mdio_unregister;
+ }
+
+ ret = register_netdev(dev);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to register net_device\n");
+ goto out_mdio_probe;
+ }
+
+ /* read existing mac address */
+ nuport_mac_read_mac_address(dev);
+
+ dev_info(&pdev->dev, "registered (MAC: %pM)\n", dev->dev_addr);
+
+ return ret;
+
+out_mdio_probe:
+ phy_disconnect(priv->phydev);
+out_mdio_unregister:
+ mdiobus_unregister(priv->mii_bus);
+out_mdio_irq:
+ kfree(priv->mii_bus->irq);
+out_mdio:
+ mdiobus_free(priv->mii_bus);
+out_platform:
+ platform_set_drvdata(pdev, NULL);
+out:
+ clk_put(priv->ephy_clk);
+ clk_put(priv->emac_clk);
+ free_netdev(dev);
+ platform_set_drvdata(pdev, NULL);
+ return ret;
+}
+
+static int nuport_mac_remove(struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct nuport_mac_priv *priv = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ phy_disconnect(priv->phydev);
+ mdiobus_unregister(priv->mii_bus);
+ kfree(priv->mii_bus->irq);
+ mdiobus_free(priv->mii_bus);
+ clk_put(priv->ephy_clk);
+ clk_put(priv->emac_clk);
+ free_netdev(dev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct of_device_id nuport_eth_ids[] __initdata = {
+ {.compatible = "moschip,nuport-mac",},
+ { /* sentinel */ },
+};
+
+static struct platform_driver nuport_eth_driver = {
+ .driver = {
+ .name = "nuport-mac",
+ .owner = THIS_MODULE,
+ .of_match_table = nuport_eth_ids,
+ },
+ .probe = nuport_mac_probe,
+ .remove = nuport_mac_remove,
+};
+
+module_platform_driver(nuport_eth_driver);
+
+MODULE_AUTHOR("Moschip Semiconductors Ltd.");
+MODULE_DESCRIPTION("Moschip MCS8140 Ethernet MAC driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Driver for Moschip MCS814x internal PHY
+ *
+ * Copyright (c) 2012 Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+
+MODULE_DESCRIPTION("Moschip MCS814x PHY driver");
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_LICENSE("GPL");
+
+/* Nothing special about this PHY but its OUI (O) */
+static struct phy_driver mcs8140_driver = {
+ .phy_id = 0,
+ .name = "Moschip MCS8140",
+ .phy_id_mask = 0x02,
+ .features = PHY_BASIC_FEATURES,
+ .config_aneg = &genphy_config_aneg,
+ .read_status = &genphy_read_status,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .driver = { .owner = THIS_MODULE,},
+};
+
+static int __init mcs814x_phy_init(void)
+{
+ return phy_driver_register(&mcs8140_driver);
+}
+
+static void __exit mcs814x_phy_exit(void)
+{
+ phy_driver_unregister(&mcs8140_driver);
+}
+
+module_init(mcs814x_phy_init);
+module_exit(mcs814x_phy_exit);
+
+static struct mdio_device_id __maybe_unused mcs814x_phy_tbl[] = {
+ { 0x0, 0x0ffffff0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, mcs814x_phy_tbl);
--- /dev/null
+/*
+ * MCS814X EHCI Host Controller Driver
+ *
+ * Based on "ehci-fsl.c" by Randy Vinson <rvinson@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+#define MCS814X_EHCI_CAPS_OFFSET 0x68
+
+static int mcs814x_ehci_init(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int retval = 0;
+
+ ehci->caps = hcd->regs + MCS814X_EHCI_CAPS_OFFSET;
+ ehci->regs = hcd->regs
+ + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+ ehci_reset(ehci);
+
+ retval = ehci_init(hcd);
+ if (retval) {
+ pr_err("ehci_init failed\n");
+ return retval;
+ }
+
+ return retval;
+}
+
+static const struct hc_driver mcs814x_ehci_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "MCS814X EHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+ .reset = mcs814x_ehci_init,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .get_frame_number = ehci_get_frame,
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#if defined(CONFIG_PM)
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int mcs814x_ehci_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ const struct hc_driver *driver = &mcs814x_ehci_hc_driver;
+ struct resource *res;
+ int irq;
+ int retval;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Found HC with no IRQ. Check %s setup!\n",
+ dev_name(&pdev->dev));
+ return -ENODEV;
+ }
+ irq = res->start;
+
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+
+ hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto fail_create_hcd;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Found HC with no register addr. Check %s setup!\n",
+ dev_name(&pdev->dev));
+ retval = -ENODEV;
+ goto fail_request_resource;
+ }
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
+ driver->description)) {
+ dev_dbg(&pdev->dev, "controller already in use\n");
+ retval = -EBUSY;
+ goto fail_request_resource;
+ }
+
+ hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
+ if (hcd->regs == NULL) {
+ dev_dbg(&pdev->dev, "error mapping memory\n");
+ retval = -EFAULT;
+ goto fail_ioremap;
+ }
+
+ retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ if (retval)
+ goto fail_add_hcd;
+
+ dev_info(&pdev->dev, "added MCS814X EHCI driver\n");
+
+ return retval;
+
+fail_add_hcd:
+ iounmap(hcd->regs);
+fail_ioremap:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+fail_request_resource:
+ usb_put_hcd(hcd);
+fail_create_hcd:
+ dev_err(&pdev->dev, "init %s fail, %d\n", dev_name(&pdev->dev), retval);
+ return retval;
+}
+
+static int mcs814x_ehci_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+MODULE_ALIAS("platform:mcs814x-ehci");
+
+static const struct of_device_id mcs814x_ehci_id[] = {
+ { .compatible = "moschip,mcs814x-ehci" },
+ { .compatible = "usb-ehci" },
+ { /* sentinel */ },
+};
+
+static struct platform_driver mcs814x_ehci_driver = {
+ .probe = mcs814x_ehci_probe,
+ .remove = mcs814x_ehci_remove,
+ .driver = {
+ .name = "mcs814x-ehci",
+ .of_match_table = mcs814x_ehci_id,
+ },
+};
--- /dev/null
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus Glue for Moschip MCS814x.
+ *
+ * Written by Christopher Hoover <ch@hpl.hp.com>
+ * Based on fragments of previous driver by Russell King et al.
+ *
+ * Modified for LH7A404 from ohci-sa1111.c
+ * by Durgesh Pattamatta <pattamattad@sharpsec.com>
+ *
+ * Modified for pxa27x from ohci-lh7a404.c
+ * by Nick Bane <nick@cecomputing.co.uk> 26-8-2004
+ *
+ * Modified for mcs814x from ohci-mcs814x.c
+ * by Lennert Buytenhek <buytenh@wantstofly.org> 28-2-2006
+ * Based on an earlier driver by Ray Lehtiniemi
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/device.h>
+#include <linux/signal.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+
+static int usb_hcd_mcs814x_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
+{
+ int retval;
+ struct usb_hcd *hcd;
+
+ if (pdev->resource[1].flags != IORESOURCE_IRQ) {
+ pr_debug("resource[1] is not IORESOURCE_IRQ");
+ return -ENOMEM;
+ }
+
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+
+ hcd = usb_create_hcd(driver, &pdev->dev, "mcs814x");
+ if (hcd == NULL)
+ return -ENOMEM;
+
+ hcd->rsrc_start = pdev->resource[0].start;
+ hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ usb_put_hcd(hcd);
+ retval = -EBUSY;
+ goto err1;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (hcd->regs == NULL) {
+ pr_debug("ioremap failed");
+ retval = -ENOMEM;
+ goto err2;
+ }
+
+ ohci_hcd_init(hcd_to_ohci(hcd));
+
+ retval = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_DISABLED);
+ if (retval == 0)
+ return retval;
+
+ iounmap(hcd->regs);
+err2:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err1:
+ usb_put_hcd(hcd);
+
+ return retval;
+}
+
+static void usb_hcd_mcs814x_remove(struct usb_hcd *hcd,
+ struct platform_device *pdev)
+{
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+}
+
+static int ohci_mcs814x_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int ret;
+
+ ret = ohci_init(ohci);
+ if (ret < 0)
+ return ret;
+
+ ret = ohci_run(ohci);
+ if (ret < 0) {
+ ohci_err(ohci, "can't start %s", hcd->self.bus_name);
+ ohci_stop(hcd);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct hc_driver ohci_mcs814x_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "MCS814X OHCI",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+ .start = ohci_mcs814x_start,
+ .stop = ohci_stop,
+ .shutdown = ohci_shutdown,
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+ .get_frame_number = ohci_get_frame,
+ .hub_status_data = ohci_hub_status_data,
+ .hub_control = ohci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+extern int usb_disabled(void);
+
+static int ohci_hcd_mcs814x_drv_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = -ENODEV;
+ if (!usb_disabled())
+ ret = usb_hcd_mcs814x_probe(&ohci_mcs814x_hc_driver, pdev);
+
+ return ret;
+}
+
+static int ohci_hcd_mcs814x_drv_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+
+ usb_hcd_mcs814x_remove(hcd, pdev);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_hcd_mcs814x_drv_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+ hcd->state = HC_STATE_SUSPENDED;
+
+ return 0;
+}
+
+static int ohci_hcd_mcs814x_drv_resume(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int status;
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+ ohci_finish_controller_resume(hcd);
+ return 0;
+}
+#endif
+
+static const struct of_device_id mcs814x_ohci_id[] = {
+ { .compatible = "moschip,mcs814x-ohci" },
+ { .compatible = "ohci-le" },
+ { /* sentinel */ },
+};
+
+static struct platform_driver ohci_hcd_mcs814x_driver = {
+ .probe = ohci_hcd_mcs814x_drv_probe,
+ .remove = ohci_hcd_mcs814x_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+#ifdef CONFIG_PM
+ .suspend = ohci_hcd_mcs814x_drv_suspend,
+ .resume = ohci_hcd_mcs814x_drv_resume,
+#endif
+ .driver = {
+ .name = "mcs814x-ohci",
+ .owner = THIS_MODULE,
+ .of_match_table = mcs814x_ohci_id,
+ },
+};
+
+MODULE_ALIAS("platform:mcs814x-ohci");
--- /dev/null
+/*
+ * Moschip MCS814x Watchdog driver
+ *
+ * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
+#include <linux/watchdog.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/of.h>
+
+#define WDT_COUNT 0x00
+#define WDT_CTRL 0x04
+#define WDT_CTRL_EN 0x1
+
+/* watchdog frequency */
+#define WDT_MAX_VALUE (0xffffffff)
+
+struct mcs814x_wdt {
+ void __iomem *regs;
+ spinlock_t lock;
+ struct watchdog_device wdt_dev;
+ struct clk *clk;
+};
+
+static int mcs814x_wdt_start(struct watchdog_device *dev)
+{
+ struct mcs814x_wdt *wdt = watchdog_get_drvdata(dev);
+ u32 reg;
+
+ spin_lock(&wdt->lock);
+ reg = readl_relaxed(wdt->regs + WDT_CTRL);
+ reg |= WDT_CTRL_EN;
+ writel_relaxed(reg, wdt->regs + WDT_CTRL);
+ spin_unlock(&wdt->lock);
+
+ return 0;
+}
+
+static int mcs814x_wdt_stop(struct watchdog_device *dev)
+{
+ struct mcs814x_wdt *wdt = watchdog_get_drvdata(dev);
+ u32 reg;
+
+ spin_lock(&wdt->lock);
+ reg = readl_relaxed(wdt->regs + WDT_CTRL);
+ reg &= ~WDT_CTRL_EN;
+ writel_relaxed(reg, wdt->regs + WDT_CTRL);
+ spin_unlock(&wdt->lock);
+
+ return 0;
+}
+
+static int mcs814x_wdt_set_timeout(struct watchdog_device *dev,
+ unsigned int new_timeout)
+{
+ struct mcs814x_wdt *wdt = watchdog_get_drvdata(dev);
+
+ spin_lock(&wdt->lock);
+ /* watchdog counts upward and rollover (0xfffffff -> 0)
+ * triggers the reboot
+ */
+ writel_relaxed(WDT_MAX_VALUE - (new_timeout * clk_get_rate(wdt->clk)),
+ wdt->regs + WDT_COUNT);
+ spin_unlock(&wdt->lock);
+
+ return 0;
+}
+
+static int mcs814x_wdt_ping(struct watchdog_device *dev)
+{
+ /* restart the watchdog */
+ mcs814x_wdt_stop(dev);
+ mcs814x_wdt_set_timeout(dev, dev->timeout);
+ mcs814x_wdt_start(dev);
+
+ return 0;
+}
+
+static const struct watchdog_info mcs814x_wdt_ident = {
+ .options = WDIOF_CARDRESET | WDIOF_SETTIMEOUT |
+ WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
+ .identity = "MCS814x Watchdog",
+};
+
+static struct watchdog_ops mcs814x_wdt_ops = {
+ .owner = THIS_MODULE,
+ .start = mcs814x_wdt_start,
+ .stop = mcs814x_wdt_stop,
+ .set_timeout = mcs814x_wdt_set_timeout,
+ .ping = mcs814x_wdt_ping,
+};
+
+static int mcs814x_wdt_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct mcs814x_wdt *wdt;
+ int ret;
+ struct clk *clk;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+
+ clk = clk_get(NULL, "wdt");
+ if (IS_ERR_OR_NULL(clk)) {
+ dev_err(&pdev->dev, "failed to get watchdog clock\n");
+ return PTR_ERR(clk);
+ }
+
+ wdt = kzalloc(sizeof(*wdt), GFP_KERNEL);
+ if (!wdt) {
+ ret = -ENOMEM;
+ goto out_clk;
+ }
+
+ spin_lock_init(&wdt->lock);
+ wdt->clk = clk;
+ wdt->wdt_dev.info = &mcs814x_wdt_ident;
+ wdt->wdt_dev.ops = &mcs814x_wdt_ops;
+ wdt->wdt_dev.min_timeout = 1;
+ /* approximately 10995 secs */
+ wdt->wdt_dev.max_timeout = (WDT_MAX_VALUE / clk_get_rate(clk));
+
+ platform_set_drvdata(pdev, wdt);
+
+ /* only ioremap registers, because the register is shared */
+ wdt->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
+ if (!wdt->regs) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ watchdog_set_drvdata(&wdt->wdt_dev, wdt);
+
+ ret = watchdog_register_device(&wdt->wdt_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot register watchdog: %d\n", ret);
+ goto out;
+ }
+
+ dev_info(&pdev->dev, "registered\n");
+ return 0;
+
+out:
+ platform_set_drvdata(pdev, NULL);
+ kfree(wdt);
+out_clk:
+ clk_put(clk);
+ return ret;
+}
+
+static int mcs814x_wdt_remove(struct platform_device *pdev)
+{
+ struct mcs814x_wdt *wdt = platform_get_drvdata(pdev);
+
+ clk_put(wdt->clk);
+ watchdog_unregister_device(&wdt->wdt_dev);
+ watchdog_set_drvdata(&wdt->wdt_dev, NULL);
+ kfree(wdt);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static const struct of_device_id mcs814x_wdt_ids[] = {
+ { .compatible = "moschip,mcs814x-wdt", },
+ { /* sentinel */ },
+};
+
+static struct platform_driver mcs814x_wdt_driver = {
+ .driver = {
+ .name = "mcs814x-wdt",
+ .owner = THIS_MODULE,
+ .of_match_table = mcs814x_wdt_ids,
+ },
+ .probe = mcs814x_wdt_probe,
+ .remove = mcs814x_wdt_remove,
+};
+
+module_platform_driver(mcs814x_wdt_driver);
+
+MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
+MODULE_DESCRIPTION("Moschip MCS814x Watchdog driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
+MODULE_ALIAS("platform:mcs814x-wdt");
--- /dev/null
+Index: linux-3.14.25/arch/arm/Kconfig
+===================================================================
+--- linux-3.14.25.orig/arch/arm/Kconfig
++++ linux-3.14.25/arch/arm/Kconfig
+@@ -880,6 +880,22 @@ config ARCH_OMAP1
+ help
+ Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
+
++config ARCH_MCS814X
++ bool "Moschip MCS814x"
++ select FIQ
++ select GENERIC_IRQ_CHIP
++ select GENERIC_GPIO
++ select ARCH_REQUIRE_GPIOLIB
++ select CLKDEV_LOOKUP
++ select ARCH_USES_GETTIMEOFFSET
++ select NEED_MACH_MEMORY_H
++ select USB_ARCH_HAS_OHCI
++ select USB_ARCH_HAS_EHCI
++ select MULTI_IRQ_HANDLER
++ help
++ Support for Moschip MCS814x SoCs (MCS8140).
++
++
+ endchoice
+
+ menu "Multiple platform selection"
+@@ -1004,6 +1020,8 @@ source "arch/arm/mach-picoxcell/Kconfig"
+ source "arch/arm/mach-pxa/Kconfig"
+ source "arch/arm/plat-pxa/Kconfig"
+
++source "arch/arm/mach-mcs814x/Kconfig"
++
+ source "arch/arm/mach-mmp/Kconfig"
+
+ source "arch/arm/mach-realview/Kconfig"
+Index: linux-3.14.25/arch/arm/Makefile
+===================================================================
+--- linux-3.14.25.orig/arch/arm/Makefile
++++ linux-3.14.25/arch/arm/Makefile
+@@ -170,6 +170,7 @@ machine-$(CONFIG_ARCH_KEYSTONE) += keys
+ machine-$(CONFIG_ARCH_KIRKWOOD) += kirkwood
+ machine-$(CONFIG_ARCH_KS8695) += ks8695
+ machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
++machine-$(CONFIG_ARCH_MCS814X) += mcs814x
+ machine-$(CONFIG_ARCH_MMP) += mmp
+ machine-$(CONFIG_ARCH_MOXART) += moxart
+ machine-$(CONFIG_ARCH_MSM) += msm
+Index: linux-3.14.25/arch/arm/boot/dts/Makefile
+===================================================================
+--- linux-3.14.25.orig/arch/arm/boot/dts/Makefile
++++ linux-3.14.25/arch/arm/boot/dts/Makefile
+@@ -118,6 +118,8 @@ dtb-$(CONFIG_ARCH_KIRKWOOD) += kirkwood-
+ kirkwood-ts219-6281.dtb \
+ kirkwood-ts219-6282.dtb
+ dtb-$(CONFIG_ARCH_MARCO) += marco-evb.dtb
++dtb-$(CONFIG_ARCH_MCS814X) += dlan-usb-extender.dtb \
++ rbt-832.dtb
+ dtb-$(CONFIG_ARCH_MOXART) += moxart-uc7112lx.dtb
+ dtb-$(CONFIG_ARCH_MSM) += qcom-msm8660-surf.dtb \
+ qcom-msm8960-cdp.dtb \
--- /dev/null
+--- a/drivers/net/ethernet/Kconfig
++++ b/drivers/net/ethernet/Kconfig
+@@ -167,4 +167,6 @@ source "drivers/net/ethernet/wiznet/Kcon
+ source "drivers/net/ethernet/xilinx/Kconfig"
+ source "drivers/net/ethernet/xircom/Kconfig"
+
++source "drivers/net/ethernet/mcs8140/Kconfig"
++
+ endif # ETHERNET
+--- a/drivers/net/ethernet/Makefile
++++ b/drivers/net/ethernet/Makefile
+@@ -77,3 +77,4 @@ obj-$(CONFIG_NET_VENDOR_VIA) += via/
+ obj-$(CONFIG_NET_VENDOR_WIZNET) += wiznet/
+ obj-$(CONFIG_NET_VENDOR_XILINX) += xilinx/
+ obj-$(CONFIG_NET_VENDOR_XIRCOM) += xircom/
++obj-$(CONFIG_NUPORT_ETHERNET_DRIVER) += mcs8140/
--- /dev/null
+--- a/drivers/usb/host/ehci-hcd.c
++++ b/drivers/usb/host/ehci-hcd.c
+@@ -1298,6 +1298,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ehci_hcd_sead3_driver
+ #endif
+
++#ifdef CONFIG_ARCH_MCS814X
++#include "ehci-mcs814x.c"
++#define PLATFORM_DRIVER mcs814x_ehci_driver
++#endif
++
+ static int __init ehci_hcd_init(void)
+ {
+ int retval = 0;
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -1218,6 +1218,11 @@ MODULE_LICENSE ("GPL");
+ #define PLATFORM_DRIVER ohci_hcd_tilegx_driver
+ #endif
+
++#ifdef CONFIG_ARCH_MCS814X
++#include "ohci-mcs814x.c"
++#define PLATFORM_DRIVER ohci_hcd_mcs814x_driver
++#endif
++
+ static int __init ohci_hcd_mod_init(void)
+ {
+ int retval = 0;
--- /dev/null
+--- a/drivers/char/hw_random/Kconfig
++++ b/drivers/char/hw_random/Kconfig
+@@ -227,6 +227,18 @@ config HW_RANDOM_TX4939
+
+ If unsure, say Y.
+
++config HW_RANDOM_MCS814X
++ tristate "Moschip MCS814x Random Number Generator"
++ depends on HW_RANDOM && ARCH_MCS814X
++ ---help---
++ This driver provides kernel-side support for the Random Number
++ Generator hardware found on Moschip MCS814x processors.
++
++ To compile this driver as a module, choose M here: the
++ module will be called mcs814x-rng.
++
++ If unusure, say Y.
++
+ config HW_RANDOM_MXC_RNGA
+ tristate "Freescale i.MX RNGA Random Number Generator"
+ depends on HW_RANDOM && ARCH_HAS_RNGA
+--- a/drivers/char/hw_random/Makefile
++++ b/drivers/char/hw_random/Makefile
+@@ -19,6 +19,7 @@ obj-$(CONFIG_HW_RANDOM_OMAP3_ROM) += oma
+ obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o
+ obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o
+ obj-$(CONFIG_HW_RANDOM_TX4939) += tx4939-rng.o
++obj-$(CONFIG_HW_RANDOM_MCS814X) += mcs814x-rng.o
+ obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o
+ obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o
+ obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o
--- /dev/null
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -421,6 +421,12 @@ config SIRFSOC_WATCHDOG
+ Support for CSR SiRFprimaII and SiRFatlasVI watchdog. When
+ the watchdog triggers the system will be reset.
+
++config MCS814X_WATCHDOG
++ tristate "Moschip MCS814x watchdog"
++ depends on WATCHDOG_CORE && ARCH_MCS814X
++ help
++ Support for the Moschip MCS814x SoCs on-chip watchdog timer.
++
+ # AVR32 Architecture
+
+ config AT32AP700X_WDT
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -58,6 +58,7 @@ obj-$(CONFIG_BCM2835_WDT) += bcm2835_wdt
+ obj-$(CONFIG_MOXART_WDT) += moxart_wdt.o
+ obj-$(CONFIG_SIRFSOC_WATCHDOG) += sirfsoc_wdt.o
+ obj-$(CONFIG_BCM_KONA_WDT) += bcm_kona_wdt.o
++obj-$(CONFIG_MCS814X_WATCHDOG) += mcs814x_wdt.o
+
+ # AVR32 Architecture
+ obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
--- /dev/null
+--- a/drivers/gpio/Kconfig
++++ b/drivers/gpio/Kconfig
+@@ -748,6 +748,12 @@ config GPIO_MC33880
+ SPI driver for Freescale MC33880 high-side/low-side switch.
+ This provides GPIO interface supporting inputs and outputs.
+
++config GPIO_MCS814X
++ tristate "Moschip MCS814x GPIO support"
++ depends on ARCH_MCS814X
++ help
++ GPIO driver for Moschip MCS814x SoC gpio controllers.
++
+ config GPIO_74X164
+ tristate "74x164 serial-in/parallel-out 8-bits shift register"
+ depends on SPI_MASTER && OF
+--- a/drivers/gpio/Makefile
++++ b/drivers/gpio/Makefile
+@@ -45,6 +45,7 @@ obj-$(CONFIG_GPIO_MAX732X) += gpio-max73
+ obj-$(CONFIG_GPIO_MC33880) += gpio-mc33880.o
+ obj-$(CONFIG_GPIO_MC9S08DZ60) += gpio-mc9s08dz60.o
+ obj-$(CONFIG_GPIO_MCP23S08) += gpio-mcp23s08.o
++obj-$(CONFIG_GPIO_MCS814X) += gpio-mcs814x.o
+ obj-$(CONFIG_GPIO_ML_IOH) += gpio-ml-ioh.o
+ obj-$(CONFIG_GPIO_MM_LANTIQ) += gpio-mm-lantiq.o
+ obj-$(CONFIG_GPIO_MOXART) += gpio-moxart.o
--- /dev/null
+--- a/drivers/net/phy/Kconfig
++++ b/drivers/net/phy/Kconfig
+@@ -157,6 +157,10 @@ config MICREL_PHY
+ ---help---
+ Currently has a driver for the KSZ8041
+
++config MCS814X_PHY
++ tristate "Driver for the Moschip MCS814x internal PHY"
++ depends on ARCH_MCS814X
++
+ config FIXED_PHY
+ bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
+ depends on PHYLIB=y
+--- a/drivers/net/phy/Makefile
++++ b/drivers/net/phy/Makefile
+@@ -49,3 +49,4 @@ obj-$(CONFIG_MDIO_BUS_MUX_GPIO) += mdio-
+ obj-$(CONFIG_MDIO_BUS_MUX_MMIOREG) += mdio-mux-mmioreg.o
+ obj-$(CONFIG_MDIO_SUN4I) += mdio-sun4i.o
+ obj-$(CONFIG_MDIO_MOXART) += mdio-moxart.o
++obj-$(CONFIG_MCS814X_PHY) += mcs814x.o
--- /dev/null
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -41,9 +41,9 @@
+ #include <linux/mtd/xip.h>
+
+ #define AMD_BOOTLOC_BUG
+-#define FORCE_WORD_WRITE 0
++#define FORCE_WORD_WRITE 1
+
+-#define MAX_WORD_RETRIES 3
++#define MAX_WORD_RETRIES 10
+
+ #define SST49LF004B 0x0060
+ #define SST49LF040B 0x0050
--- /dev/null
+--- a/drivers/usb/host/ohci.h
++++ b/drivers/usb/host/ohci.h
+@@ -114,7 +114,7 @@ struct td {
+ /* PSW is only for ISO. Only 1 PSW entry is used, but on
+ * big-endian PPC hardware that's the second entry.
+ */
+-#define MAXPSW 2
++#define MAXPSW 8
+ __hc16 hwPSW [MAXPSW];
+
+ /* rest are purely for the driver's use */
+--- a/drivers/usb/host/ohci-hcd.c
++++ b/drivers/usb/host/ohci-hcd.c
+@@ -505,6 +505,7 @@ static int ohci_init (struct ohci_hcd *o
+ {
+ int ret;
+ struct usb_hcd *hcd = ohci_to_hcd(ohci);
++ u32 hcca_area;
+
+ if (distrust_firmware)
+ ohci->flags |= OHCI_QUIRK_HUB_POWER;
+@@ -558,11 +559,13 @@ static int ohci_init (struct ohci_hcd *o
+ if (ohci->hcca)
+ return 0;
+
+- ohci->hcca = dma_alloc_coherent (hcd->self.controller,
+- sizeof *ohci->hcca, &ohci->hcca_dma, 0);
++ hcca_area = ohci_readl(ohci, &ohci->regs->hcca);
++ ohci->hcca = ioremap_nocache(hcca_area, sizeof *ohci->hcca);
+ if (!ohci->hcca)
+ return -ENOMEM;
+
++ ohci->hcca_dma = hcca_area;
++
+ if ((ret = ohci_mem_init (ohci)) < 0)
+ ohci_stop (hcd);
+ else {
+@@ -580,6 +583,7 @@ static int ohci_init (struct ohci_hcd *o
+ */
+ static int ohci_run (struct ohci_hcd *ohci)
+ {
++ int i = 0;
+ u32 mask, val;
+ int first = ohci->fminterval == 0;
+ struct usb_hcd *hcd = ohci_to_hcd(ohci);
+@@ -630,6 +634,8 @@ static int ohci_run (struct ohci_hcd *oh
+ msleep(val);
+
+ memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
++ for (i = 0; i < NUM_INTS; i++)
++ ohci->hcca->int_table[i] = 0;
+
+ /* 2msec timelimit here means no irqs/preempt */
+ spin_lock_irq (&ohci->lock);
+@@ -943,9 +949,6 @@ static void ohci_stop (struct usb_hcd *h
+ remove_debug_files (ohci);
+ ohci_mem_cleanup (ohci);
+ if (ohci->hcca) {
+- dma_free_coherent (hcd->self.controller,
+- sizeof *ohci->hcca,
+- ohci->hcca, ohci->hcca_dma);
+ ohci->hcca = NULL;
+ ohci->hcca_dma = 0;
+ }
projects / openwrt / staging / dangole.git / commitdiff