linux-vybrid_public/arch/arm/mach-tegra/sleep.S

/*
 * arch/arm/mach-tegra/sleep.S
 *
 * Copyright (c) 2010-2011, NVIDIA Corporation.
 * Copyright (c) 2011, Google, Inc.
 *
 * Author: Colin Cross <ccross@android.com>
 *         Gary King <gking@nvidia.com>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include <linux/linkage.h>

#include <asm/assembler.h>

#include <mach/iomap.h>

#include "flowctrl.h"

#define TEGRA_FLOW_CTRL_VIRT (TEGRA_FLOW_CTRL_BASE - IO_PPSB_PHYS \
					+ IO_PPSB_VIRT)

/* returns the offset of the flow controller halt register for a cpu */
.macro cpu_to_halt_reg rd, rcpu
	cmp	\rcpu, #0
	subne	\rd, \rcpu, #1
	movne	\rd, \rd, lsl #3
	addne	\rd, \rd, #0x14
	moveq	\rd, #0
.endm

/* returns the offset of the flow controller csr register for a cpu */
.macro cpu_to_csr_reg rd, rcpu
	cmp	\rcpu, #0
	subne	\rd, \rcpu, #1
	movne	\rd, \rd, lsl #3
	addne	\rd, \rd, #0x18
	moveq	\rd, #8
.endm

/* returns the ID of the current processor */
.macro cpu_id, rd
	mrc	p15, 0, \rd, c0, c0, 5
	and	\rd, \rd, #0xF
.endm

/* loads a 32-bit value into a register without a data access */
.macro mov32, reg, val
	movw	\reg, #:lower16:\val
	movt	\reg, #:upper16:\val
.endm