[deliverable/linux.git] / arch / arm / mach-tegra / sleep.h

/*
 * Copyright (c) 2010-2013, 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)
#define TEGRA_PMC_VIRT	(TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)

/* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
#define PMC_SCRATCH37	0x130
#define PMC_SCRATCH38	0x134
#define PMC_SCRATCH39	0x138
#define PMC_SCRATCH41	0x140

#ifdef CONFIG_ARCH_TEGRA_2x_SOC
#define CPU_RESETTABLE		2
#define CPU_RESETTABLE_SOON	1
#define CPU_NOT_RESETTABLE	0
#endif

#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

/* Marco to check CPU part num */
.macro check_cpu_part_num part_num, tmp1, tmp2
	mrc	p15, 0, \tmp1, c0, c0, 0
	ubfx	\tmp1, \tmp1, #4, #12
	mov32	\tmp2, \part_num
	cmp	\tmp1, \tmp2
.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
#ifdef CONFIG_HAVE_ARM_SCU
	check_cpu_part_num 0xc09, \tmp1, \tmp2
	mrceq	p15, 0, \tmp1, c0, c0, 5
	andeq	\tmp1, \tmp1, #0xF
	moveq	\tmp1, \tmp1, lsl #2
	moveq	\tmp2, #0xf
	moveq	\tmp2, \tmp2, lsl \tmp1
	ldreq	\tmp1, =(TEGRA_ARM_PERIF_VIRT + 0xC)
	streq	\tmp2, [\tmp1]			@ invalidate SCU tags for CPU
	dsb
#endif
.endm

/* Macro to check Tegra revision */
#define APB_MISC_GP_HIDREV	0x804
.macro tegra_get_soc_id base, tmp1
	mov32	\tmp1, \base
	ldr	\tmp1, [\tmp1, #APB_MISC_GP_HIDREV]
	and	\tmp1, \tmp1, #0xff00
	mov	\tmp1, \tmp1, lsr #8
.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
	W(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_pen_lock(void);
void tegra_pen_unlock(void);
void tegra_resume(void);
int tegra_sleep_cpu_finish(unsigned long);
void tegra_disable_clean_inv_dcache(void);

#ifdef CONFIG_HOTPLUG_CPU
void tegra20_hotplug_shutdown(void);
void tegra30_hotplug_shutdown(void);
void tegra_hotplug_init(void);
#else
static inline void tegra_hotplug_init(void) {}
#endif

void tegra20_cpu_shutdown(int cpu);
int tegra20_cpu_is_resettable_soon(void);
void tegra20_cpu_clear_resettable(void);
#ifdef CONFIG_ARCH_TEGRA_2x_SOC
void tegra20_cpu_set_resettable_soon(void);
#else
static inline void tegra20_cpu_set_resettable_soon(void) {}
#endif

int tegra20_sleep_cpu_secondary_finish(unsigned long);
void tegra20_tear_down_cpu(void);
int tegra30_sleep_cpu_secondary_finish(unsigned long);
void tegra30_tear_down_cpu(void);

#endif
#endif
Commit	Line	Data
c2be5bfc	1	/*
7469688e	2	* Copyright (c) 2010-2013, NVIDIA Corporation. All rights reserved.
c2be5bfc JL	3	*
	4	* This program is free software; you can redistribute it and/or modify it
	5	* under the terms and conditions of the GNU General Public License,
	6	* version 2, as published by the Free Software Foundation.
	7	*
	8	* This program is distributed in the hope it will be useful, but WITHOUT
	9	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	10	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	11	* more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
	17	#ifndef __MACH_TEGRA_SLEEP_H
	18	#define __MACH_TEGRA_SLEEP_H
	19
2be39c07	20	#include "iomap.h"
c2be5bfc	21
59b0f682 JL	22	#define TEGRA_ARM_PERIF_VIRT (TEGRA_ARM_PERIF_BASE - IO_CPU_PHYS \
59b0f682 JL	23	+ IO_CPU_VIRT)
c2be5bfc JL	24	#define TEGRA_FLOW_CTRL_VIRT (TEGRA_FLOW_CTRL_BASE - IO_PPSB_PHYS \
c2be5bfc JL	25	+ IO_PPSB_VIRT)
453689e4 JL	26	#define TEGRA_CLK_RESET_VIRT (TEGRA_CLK_RESET_BASE - IO_PPSB_PHYS \
453689e4 JL	27	+ IO_PPSB_VIRT)
5c1350bd JL	28	#define TEGRA_PMC_VIRT (TEGRA_PMC_BASE - IO_APB_PHYS + IO_APB_VIRT)
	29
	30	/* PMC_SCRATCH37-39 and 41 are used for tegra_pen_lock and idle */
	31	#define PMC_SCRATCH37 0x130
	32	#define PMC_SCRATCH38 0x134
	33	#define PMC_SCRATCH39 0x138
	34	#define PMC_SCRATCH41 0x140
	35
	36	#ifdef CONFIG_ARCH_TEGRA_2x_SOC
	37	#define CPU_RESETTABLE 2
	38	#define CPU_RESETTABLE_SOON 1
	39	#define CPU_NOT_RESETTABLE 0
	40	#endif
c2be5bfc JL	41
	42	#ifdef __ASSEMBLY__
	43	/* returns the offset of the flow controller halt register for a cpu */
	44	.macro cpu_to_halt_reg rd, rcpu
	45	cmp \rcpu, #0
	46	subne \rd, \rcpu, #1
	47	movne \rd, \rd, lsl #3
	48	addne \rd, \rd, #0x14
	49	moveq \rd, #0
	50	.endm
	51
	52	/* returns the offset of the flow controller csr register for a cpu */
	53	.macro cpu_to_csr_reg rd, rcpu
	54	cmp \rcpu, #0
	55	subne \rd, \rcpu, #1
	56	movne \rd, \rd, lsl #3
	57	addne \rd, \rd, #0x18
	58	moveq \rd, #8
	59	.endm
	60
	61	/* returns the ID of the current processor */
	62	.macro cpu_id, rd
	63	mrc p15, 0, \rd, c0, c0, 5
	64	and \rd, \rd, #0xF
	65	.endm
	66
	67	/* loads a 32-bit value into a register without a data access */
	68	.macro mov32, reg, val
	69	movw \reg, #:lower16:\val
	70	movt \reg, #:upper16:\val
	71	.endm
59b0f682	72
f6d06f33 JL	73	/* Marco to check CPU part num */
	74	.macro check_cpu_part_num part_num, tmp1, tmp2
	75	mrc p15, 0, \tmp1, c0, c0, 0
	76	ubfx \tmp1, \tmp1, #4, #12
	77	mov32 \tmp2, \part_num
	78	cmp \tmp1, \tmp2
	79	.endm
	80
59b0f682 JL	81	/* Macro to exit SMP coherency. */
	82	.macro exit_smp, tmp1, tmp2
	83	mrc p15, 0, \tmp1, c1, c0, 1 @ ACTLR
	84	bic \tmp1, \tmp1, #(1<<6) \| (1<<0) @ clear ACTLR.SMP \| ACTLR.FW
	85	mcr p15, 0, \tmp1, c1, c0, 1 @ ACTLR
	86	isb
f6d06f33 JL	87	#ifdef CONFIG_HAVE_ARM_SCU
	88	check_cpu_part_num 0xc09, \tmp1, \tmp2
	89	mrceq p15, 0, \tmp1, c0, c0, 5
	90	andeq \tmp1, \tmp1, #0xF
	91	moveq \tmp1, \tmp1, lsl #2
	92	moveq \tmp2, #0xf
	93	moveq \tmp2, \tmp2, lsl \tmp1
	94	ldreq \tmp1, =(TEGRA_ARM_PERIF_VIRT + 0xC)
	95	streq \tmp2, [\tmp1] @ invalidate SCU tags for CPU
59b0f682	96	dsb
f6d06f33	97	#endif
59b0f682	98	.endm
29a0e7be	99
4b3e2eda JL	100	/* Macro to check Tegra revision */
	101	#define APB_MISC_GP_HIDREV 0x804
	102	.macro tegra_get_soc_id base, tmp1
	103	mov32 \tmp1, \base
	104	ldr \tmp1, [\tmp1, #APB_MISC_GP_HIDREV]
	105	and \tmp1, \tmp1, #0xff00
	106	mov \tmp1, \tmp1, lsr #8
	107	.endm
	108
29a0e7be JL	109	/* Macro to resume & re-enable L2 cache */
	110	#ifndef L2X0_CTRL_EN
	111	#define L2X0_CTRL_EN 1
	112	#endif
	113
	114	#ifdef CONFIG_CACHE_L2X0
	115	.macro l2_cache_resume, tmp1, tmp2, tmp3, phys_l2x0_saved_regs
c312908a	116	W(adr) \tmp1, \phys_l2x0_saved_regs
29a0e7be JL	117	ldr \tmp1, [\tmp1]
	118	ldr \tmp2, [\tmp1, #L2X0_R_PHY_BASE]
	119	ldr \tmp3, [\tmp2, #L2X0_CTRL]
	120	tst \tmp3, #L2X0_CTRL_EN
	121	bne exit_l2_resume
	122	ldr \tmp3, [\tmp1, #L2X0_R_TAG_LATENCY]
	123	str \tmp3, [\tmp2, #L2X0_TAG_LATENCY_CTRL]
	124	ldr \tmp3, [\tmp1, #L2X0_R_DATA_LATENCY]
	125	str \tmp3, [\tmp2, #L2X0_DATA_LATENCY_CTRL]
	126	ldr \tmp3, [\tmp1, #L2X0_R_PREFETCH_CTRL]
	127	str \tmp3, [\tmp2, #L2X0_PREFETCH_CTRL]
	128	ldr \tmp3, [\tmp1, #L2X0_R_PWR_CTRL]
	129	str \tmp3, [\tmp2, #L2X0_POWER_CTRL]
	130	ldr \tmp3, [\tmp1, #L2X0_R_AUX_CTRL]
	131	str \tmp3, [\tmp2, #L2X0_AUX_CTRL]
	132	mov \tmp3, #L2X0_CTRL_EN
	133	str \tmp3, [\tmp2, #L2X0_CTRL]
	134	exit_l2_resume:
	135	.endm
	136	#else /* CONFIG_CACHE_L2X0 */
	137	.macro l2_cache_resume, tmp1, tmp2, tmp3, phys_l2x0_saved_regs
	138	.endm
	139	#endif /* CONFIG_CACHE_L2X0 */
59b0f682	140	#else
5c1350bd JL	141	void tegra_pen_lock(void);
5c1350bd JL	142	void tegra_pen_unlock(void);
d3f29365	143	void tegra_resume(void);
d552920a	144	int tegra_sleep_cpu_finish(unsigned long);
57886616	145	void tegra_disable_clean_inv_dcache(void);
59b0f682 JL	146
59b0f682 JL	147	#ifdef CONFIG_HOTPLUG_CPU
7469688e HD	148	void tegra20_hotplug_shutdown(void);
	149	void tegra30_hotplug_shutdown(void);
	150	void tegra_hotplug_init(void);
59b0f682	151	#else
7469688e	152	static inline void tegra_hotplug_init(void) {}
59b0f682 JL	153	#endif
59b0f682 JL	154
1d328606 JL	155	void tegra20_cpu_shutdown(int cpu);
1d328606 JL	156	int tegra20_cpu_is_resettable_soon(void);
5c1350bd JL	157	void tegra20_cpu_clear_resettable(void);
	158	#ifdef CONFIG_ARCH_TEGRA_2x_SOC
	159	void tegra20_cpu_set_resettable_soon(void);
	160	#else
	161	static inline void tegra20_cpu_set_resettable_soon(void) {}
	162	#endif
	163
	164	int tegra20_sleep_cpu_secondary_finish(unsigned long);
1d328606	165	void tegra20_tear_down_cpu(void);
d457ef35	166	int tegra30_sleep_cpu_secondary_finish(unsigned long);
d552920a	167	void tegra30_tear_down_cpu(void);
d457ef35	168
c2be5bfc JL	169	#endif
c2be5bfc JL	170	#endif