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/*
* Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __MACH_TEGRA_SLEEP_H
#define __MACH_TEGRA_SLEEP_H
#include "iomap.h"
#define TEGRA_ARM_PERIF_VIRT (TEGRA_ARM_PERIF_BASE - IO_CPU_PHYS \
+ IO_CPU_VIRT)
#define TEGRA_FLOW_CTRL_VIRT (TEGRA_FLOW_CTRL_BASE - IO_PPSB_PHYS \
+ IO_PPSB_VIRT)
#define TEGRA_CLK_RESET_VIRT (TEGRA_CLK_RESET_BASE - IO_PPSB_PHYS \
+ IO_PPSB_VIRT)
#ifdef __ASSEMBLY__
/* 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
/* Macro to exit SMP coherency. */
.macro exit_smp, tmp1, tmp2
mrc p15, 0, \tmp1, c1, c0, 1 @ ACTLR
bic \tmp1, \tmp1, #(1<<6) | (1<<0) @ clear ACTLR.SMP | ACTLR.FW
mcr p15, 0, \tmp1, c1, c0, 1 @ ACTLR
isb
cpu_id \tmp1
mov \tmp1, \tmp1, lsl #2
mov \tmp2, #0xf
mov \tmp2, \tmp2, lsl \tmp1
mov32 \tmp1, TEGRA_ARM_PERIF_VIRT + 0xC
str \tmp2, [\tmp1] @ invalidate SCU tags for CPU
dsb
.endm
/* Macro to resume & re-enable L2 cache */
#ifndef L2X0_CTRL_EN
#define L2X0_CTRL_EN 1
#endif
#ifdef CONFIG_CACHE_L2X0
.macro l2_cache_resume, tmp1, tmp2, tmp3, phys_l2x0_saved_regs
adr \tmp1, \phys_l2x0_saved_regs
ldr \tmp1, [\tmp1]
ldr \tmp2, [\tmp1, #L2X0_R_PHY_BASE]
ldr \tmp3, [\tmp2, #L2X0_CTRL]
tst \tmp3, #L2X0_CTRL_EN
bne exit_l2_resume
ldr \tmp3, [\tmp1, #L2X0_R_TAG_LATENCY]
str \tmp3, [\tmp2, #L2X0_TAG_LATENCY_CTRL]
ldr \tmp3, [\tmp1, #L2X0_R_DATA_LATENCY]
str \tmp3, [\tmp2, #L2X0_DATA_LATENCY_CTRL]
ldr \tmp3, [\tmp1, #L2X0_R_PREFETCH_CTRL]
str \tmp3, [\tmp2, #L2X0_PREFETCH_CTRL]
ldr \tmp3, [\tmp1, #L2X0_R_PWR_CTRL]
str \tmp3, [\tmp2, #L2X0_POWER_CTRL]
ldr \tmp3, [\tmp1, #L2X0_R_AUX_CTRL]
str \tmp3, [\tmp2, #L2X0_AUX_CTRL]
mov \tmp3, #L2X0_CTRL_EN
str \tmp3, [\tmp2, #L2X0_CTRL]
exit_l2_resume:
.endm
#else /* CONFIG_CACHE_L2X0 */
.macro l2_cache_resume, tmp1, tmp2, tmp3, phys_l2x0_saved_regs
.endm
#endif /* CONFIG_CACHE_L2X0 */
#else
void tegra_resume(void);
int tegra_sleep_cpu_finish(unsigned long);
#ifdef CONFIG_HOTPLUG_CPU
void tegra20_hotplug_init(void);
void tegra30_hotplug_init(void);
#else
static inline void tegra20_hotplug_init(void) {}
static inline void tegra30_hotplug_init(void) {}
#endif
int tegra30_sleep_cpu_secondary_finish(unsigned long);
void tegra30_tear_down_cpu(void);
#endif
#endif
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