sh: mach-sdk7786: Handle baseboard NMI source selection. (76496f8f) · Commits · 戴 / test

arch/sh/boards/mach-sdk7786/Makefile

+1 −1

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		obj-y := fpga.o irq.o setup.o
		obj-y := fpga.o irq.o nmi.o setup.o

		obj-$(CONFIG_GENERIC_GPIO) += gpio.o
		obj-$(CONFIG_HAVE_SRAM_POOL) += sram.o

arch/sh/boards/mach-sdk7786/nmi.c

0 → 100644

+83 −0

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		/*
		* SDK7786 FPGA NMI Support.
		*
		* Copyright (C) 2010 Paul Mundt
		*
		* This file is subject to the terms and conditions of the GNU General Public
		* License. See the file "COPYING" in the main directory of this archive
		* for more details.
		*/
		#include <linux/init.h>
		#include <linux/kernel.h>
		#include <linux/string.h>
		#include <mach/fpga.h>

		enum {
		NMI_MODE_MANUAL,
		NMI_MODE_AUX,
		NMI_MODE_MASKED,
		NMI_MODE_ANY,
		NMI_MODE_UNKNOWN,
		};

		/*
		* Default to the manual NMI switch.
		*/
		static unsigned int __initdata nmi_mode = NMI_MODE_ANY;

		static int __init nmi_mode_setup(char *str)
		{
		if (!str)
		return 0;

		if (strcmp(str, "manual") == 0)
		nmi_mode = NMI_MODE_MANUAL;
		else if (strcmp(str, "aux") == 0)
		nmi_mode = NMI_MODE_AUX;
		else if (strcmp(str, "masked") == 0)
		nmi_mode = NMI_MODE_MASKED;
		else if (strcmp(str, "any") == 0)
		nmi_mode = NMI_MODE_ANY;
		else {
		nmi_mode = NMI_MODE_UNKNOWN;
		pr_warning("Unknown NMI mode %s\n", str);
		}

		printk("Set NMI mode to %d\n", nmi_mode);
		return 0;
		}
		early_param("nmi_mode", nmi_mode_setup);

		void __init sdk7786_nmi_init(void)
		{
		unsigned int source, mask, tmp;

		switch (nmi_mode) {
		case NMI_MODE_MANUAL:
		source = NMISR_MAN_NMI;
		mask = NMIMR_MAN_NMIM;
		break;
		case NMI_MODE_AUX:
		source = NMISR_AUX_NMI;
		mask = NMIMR_AUX_NMIM;
		break;
		case NMI_MODE_ANY:
		source = NMISR_MAN_NMI \| NMISR_AUX_NMI;
		mask = NMIMR_MAN_NMIM \| NMIMR_AUX_NMIM;
		break;
		case NMI_MODE_MASKED:
		case NMI_MODE_UNKNOWN:
		default:
		source = mask = 0;
		break;
		}

		/* Set the NMI source */
		tmp = fpga_read_reg(NMISR);
		tmp &= ~NMISR_MASK;
		tmp \|= source;
		fpga_write_reg(tmp, NMISR);

		/* And the IRQ masking */
		fpga_write_reg(NMIMR_MASK ^ mask, NMIMR);
		}

arch/sh/boards/mach-sdk7786/setup.c

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Original line number	Diff line number	Diff line
		@@ -237,6 +237,7 @@ static void __init sdk7786_setup(char **cmdline_p)
		pr_info("Renesas Technology Europe SDK7786 support:\n");

		sdk7786_fpga_init();
		sdk7786_nmi_init();

		pr_info("\tPCB revision:\t%d\n", fpga_read_reg(PCBRR) & 0xf);

arch/sh/include/mach-sdk7786/mach/fpga.h

+8 −0

Original line number	Diff line number	Diff line
		@@ -14,11 +14,16 @@
		#define INTTESTR 0x040
		#define SYSSR 0x050
		#define NRGPR 0x060

		#define NMISR 0x070
		#define NMISR_MAN_NMI BIT(0)
		#define NMISR_AUX_NMI BIT(1)
		#define NMISR_MASK (NMISR_MAN_NMI \| NMISR_AUX_NMI)

		#define NMIMR 0x080
		#define NMIMR_MAN_NMIM BIT(0) /* Manual NMI mask */
		#define NMIMR_AUX_NMIM BIT(1) /* Auxiliary NMI mask */
		#define NMIMR_MASK (NMIMR_MAN_NMIM \| NMIMR_AUX_NMIM)

		#define INTBSR 0x090
		#define INTBMR 0x0a0
		@@ -126,6 +131,9 @@
		extern void __iomem *sdk7786_fpga_base;
		extern void sdk7786_fpga_init(void);

		/* arch/sh/boards/mach-sdk7786/nmi.c */
		extern void sdk7786_nmi_init(void);

		#define SDK7786_FPGA_REGADDR(reg) (sdk7786_fpga_base + (reg))

		/*

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