ralink: add 3.18 support

keep default as 3.14, mt7621 gic need to be ported to 3.18

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 44349

1 files changed, 115 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-3.18/0005-MIPS-ralink-add-illegal-access-driver.patch b/target/linux/ramips/patches-3.18/0005-MIPS-ralink-add-illegal-access-driver.patch
new file mode 100644
index 0000000000..fa9cd21b03
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0005-MIPS-ralink-add-illegal-access-driver.patch
@@ -0,0 +1,115 @@
+From 60999174904c731e55992a4087999bbd4e5f2051 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 16 May 2013 23:28:23 +0200
+Subject: [PATCH 05/57] MIPS: ralink: add illegal access driver
+
+these SoCs have a special irq that fires upon an illegal memmory access.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ arch/mips/ralink/Makefile  |    2 +
+ arch/mips/ralink/ill_acc.c |   87 ++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 89 insertions(+)
+ create mode 100644 arch/mips/ralink/ill_acc.c
+
+--- a/arch/mips/ralink/Makefile
++++ b/arch/mips/ralink/Makefile
+@@ -10,6 +10,8 @@ obj-y := prom.o of.o reset.o clk.o irq.o
+ 
+ obj-$(CONFIG_CLKEVT_RT3352) += cevt-rt3352.o
+ 
++obj-$(CONFIG_RALINK_ILL_ACC) += ill_acc.o
++
+ obj-$(CONFIG_SOC_RT288X) += rt288x.o
+ obj-$(CONFIG_SOC_RT305X) += rt305x.o
+ obj-$(CONFIG_SOC_RT3883) += rt3883.o
+--- /dev/null
++++ b/arch/mips/ralink/ill_acc.c
+@@ -0,0 +1,87 @@
++/*
++ * 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.
++ *
++ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
++ */
++
++#include <linux/interrupt.h>
++#include <linux/of_platform.h>
++#include <linux/of_irq.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define REG_ILL_ACC_ADDR	0x10
++#define REG_ILL_ACC_TYPE	0x14
++
++#define ILL_INT_STATUS		BIT(31)
++#define ILL_ACC_WRITE		BIT(30)
++#define ILL_ACC_LEN_M		0xff
++#define ILL_ACC_OFF_M		0xf
++#define ILL_ACC_OFF_S		16
++#define ILL_ACC_ID_M		0x7
++#define ILL_ACC_ID_S		8
++
++#define	DRV_NAME		"ill_acc"
++
++static const char *ill_acc_ids[] = {
++	"cpu", "dma", "ppe", "pdma rx","pdma tx", "pci/e", "wmac", "usb",
++};
++
++static irqreturn_t ill_acc_irq_handler(int irq, void *_priv)
++{
++	struct device *dev = (struct device *) _priv;
++	u32 addr = rt_memc_r32(REG_ILL_ACC_ADDR);
++	u32 type = rt_memc_r32(REG_ILL_ACC_TYPE);
++
++	dev_err(dev, "illegal %s access from %s - addr:0x%08x offset:%d len:%d\n",
++		(type & ILL_ACC_WRITE) ? ("write") : ("read"),
++		ill_acc_ids[(type >> ILL_ACC_ID_S) & ILL_ACC_ID_M],
++		addr, (type >> ILL_ACC_OFF_S) & ILL_ACC_OFF_M,
++		type & ILL_ACC_LEN_M);
++
++	rt_memc_w32(REG_ILL_ACC_TYPE, REG_ILL_ACC_TYPE);
++
++	return IRQ_HANDLED;
++}
++
++static int __init ill_acc_of_setup(void)
++{
++	struct platform_device *pdev;
++	struct device_node *np;
++	int irq;
++
++	/* somehow this driver breaks on RT5350 */
++	if (of_machine_is_compatible("ralink,rt5350-soc"))
++		return -EINVAL;
++
++	np = of_find_compatible_node(NULL, NULL, "ralink,rt3050-memc");
++	if (!np)
++		return -EINVAL;
++
++	pdev = of_find_device_by_node(np);
++	if (!pdev) {
++		pr_err("%s: failed to lookup pdev\n", np->name);
++		return -EINVAL;
++	}
++
++	irq = irq_of_parse_and_map(np, 0);
++        if (!irq) {
++		dev_err(&pdev->dev, "failed to get irq\n");
++		return -EINVAL;
++	}
++
++	if (request_irq(irq, ill_acc_irq_handler, 0, "ill_acc", &pdev->dev)) {
++		dev_err(&pdev->dev, "failed to request irq\n");
++		return -EINVAL;
++	}
++
++	rt_memc_w32(ILL_INT_STATUS, REG_ILL_ACC_TYPE);
++
++	dev_info(&pdev->dev, "irq registered\n");
++
++	return 0;
++}
++
++arch_initcall(ill_acc_of_setup);