[deliverable/linux.git] / arch / mips / include / asm / mips-cm.h

/*
 * Copyright (C) 2013 Imagination Technologies
 * Author: Paul Burton <paul.burton@imgtec.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.
 */

#ifndef __MIPS_ASM_MIPS_CM_H__
#define __MIPS_ASM_MIPS_CM_H__

#include <linux/io.h>
#include <linux/types.h>

/* The base address of the CM GCR block */
extern void __iomem *mips_cm_base;

/* The base address of the CM L2-only sync region */
extern void __iomem *mips_cm_l2sync_base;

/**
 * __mips_cm_phys_base - retrieve the physical base address of the CM
 *
 * This function returns the physical base address of the Coherence Manager
 * global control block, or 0 if no Coherence Manager is present. It provides
 * a default implementation which reads the CMGCRBase register where available,
 * and may be overriden by platforms which determine this address in a
 * different way by defining a function with the same prototype except for the
 * name mips_cm_phys_base (without underscores).
 */
extern phys_t __mips_cm_phys_base(void);

/**
 * mips_cm_probe - probe for a Coherence Manager
 *
 * Attempt to detect the presence of a Coherence Manager. Returns 0 if a CM
 * is successfully detected, else -errno.
 */
#ifdef CONFIG_MIPS_CM
extern int mips_cm_probe(void);
#else
static inline int mips_cm_probe(void)
{
	return -ENODEV;
}
#endif

/**
 * mips_cm_present - determine whether a Coherence Manager is present
 *
 * Returns true if a CM is present in the system, else false.
 */
static inline bool mips_cm_present(void)
{
#ifdef CONFIG_MIPS_CM
	return mips_cm_base != NULL;
#else
	return false;
#endif
}

/**
 * mips_cm_has_l2sync - determine whether an L2-only sync region is present
 *
 * Returns true if the system implements an L2-only sync region, else false.
 */
static inline bool mips_cm_has_l2sync(void)
{
#ifdef CONFIG_MIPS_CM
	return mips_cm_l2sync_base != NULL;
#else
	return false;
#endif
}

/* Offsets to register blocks from the CM base address */
#define MIPS_CM_GCB_OFS		0x0000 /* Global Control Block */
#define MIPS_CM_CLCB_OFS	0x2000 /* Core Local Control Block */
#define MIPS_CM_COCB_OFS	0x4000 /* Core Other Control Block */
#define MIPS_CM_GDB_OFS		0x6000 /* Global Debug Block */

/* Total size of the CM memory mapped registers */
#define MIPS_CM_GCR_SIZE	0x8000

/* Size of the L2-only sync region */
#define MIPS_CM_L2SYNC_SIZE	0x1000

/* Macros to ease the creation of register access functions */
#define BUILD_CM_R_(name, off)					\
static inline u32 *addr_gcr_##name(void)			\
{								\
	return (u32 *)(mips_cm_base + (off));			\
}								\
								\
static inline u32 read_gcr_##name(void)				\
{								\
	return readl(addr_gcr_##name());			\
}

#define BUILD_CM__W(name, off)					\
static inline void write_gcr_##name(u32 value)			\
{								\
	writel(value, addr_gcr_##name());			\
}

#define BUILD_CM_RW(name, off)					\
	BUILD_CM_R_(name, off)					\
	BUILD_CM__W(name, off)

#define BUILD_CM_Cx_R_(name, off)				\
	BUILD_CM_R_(cl_##name, MIPS_CM_CLCB_OFS + (off))	\
	BUILD_CM_R_(co_##name, MIPS_CM_COCB_OFS + (off))

#define BUILD_CM_Cx__W(name, off)				\
	BUILD_CM__W(cl_##name, MIPS_CM_CLCB_OFS + (off))	\
	BUILD_CM__W(co_##name, MIPS_CM_COCB_OFS + (off))

#define BUILD_CM_Cx_RW(name, off)				\
	BUILD_CM_Cx_R_(name, off)				\
	BUILD_CM_Cx__W(name, off)

/* GCB register accessor functions */
BUILD_CM_R_(config,		MIPS_CM_GCB_OFS + 0x00)
BUILD_CM_RW(base,		MIPS_CM_GCB_OFS + 0x08)
BUILD_CM_RW(access,		MIPS_CM_GCB_OFS + 0x20)
BUILD_CM_R_(rev,		MIPS_CM_GCB_OFS + 0x30)
BUILD_CM_RW(error_mask,		MIPS_CM_GCB_OFS + 0x40)
BUILD_CM_RW(error_cause,	MIPS_CM_GCB_OFS + 0x48)
BUILD_CM_RW(error_addr,		MIPS_CM_GCB_OFS + 0x50)
BUILD_CM_RW(error_mult,		MIPS_CM_GCB_OFS + 0x58)
BUILD_CM_RW(l2_only_sync_base,	MIPS_CM_GCB_OFS + 0x70)
BUILD_CM_RW(gic_base,		MIPS_CM_GCB_OFS + 0x80)
BUILD_CM_RW(cpc_base,		MIPS_CM_GCB_OFS + 0x88)
BUILD_CM_RW(reg0_base,		MIPS_CM_GCB_OFS + 0x90)
BUILD_CM_RW(reg0_mask,		MIPS_CM_GCB_OFS + 0x98)
BUILD_CM_RW(reg1_base,		MIPS_CM_GCB_OFS + 0xa0)
BUILD_CM_RW(reg1_mask,		MIPS_CM_GCB_OFS + 0xa8)
BUILD_CM_RW(reg2_base,		MIPS_CM_GCB_OFS + 0xb0)
BUILD_CM_RW(reg2_mask,		MIPS_CM_GCB_OFS + 0xb8)
BUILD_CM_RW(reg3_base,		MIPS_CM_GCB_OFS + 0xc0)
BUILD_CM_RW(reg3_mask,		MIPS_CM_GCB_OFS + 0xc8)
BUILD_CM_R_(gic_status,		MIPS_CM_GCB_OFS + 0xd0)
BUILD_CM_R_(cpc_status,		MIPS_CM_GCB_OFS + 0xf0)

/* Core Local & Core Other register accessor functions */
BUILD_CM_Cx_RW(reset_release,	0x00)
BUILD_CM_Cx_RW(coherence,	0x08)
BUILD_CM_Cx_R_(config,		0x10)
BUILD_CM_Cx_RW(other,		0x18)
BUILD_CM_Cx_RW(reset_base,	0x20)
BUILD_CM_Cx_R_(id,		0x28)
BUILD_CM_Cx_RW(reset_ext_base,	0x30)
BUILD_CM_Cx_R_(tcid_0_priority,	0x40)
BUILD_CM_Cx_R_(tcid_1_priority,	0x48)
BUILD_CM_Cx_R_(tcid_2_priority,	0x50)
BUILD_CM_Cx_R_(tcid_3_priority,	0x58)
BUILD_CM_Cx_R_(tcid_4_priority,	0x60)
BUILD_CM_Cx_R_(tcid_5_priority,	0x68)
BUILD_CM_Cx_R_(tcid_6_priority,	0x70)
BUILD_CM_Cx_R_(tcid_7_priority,	0x78)
BUILD_CM_Cx_R_(tcid_8_priority,	0x80)

/* GCR_CONFIG register fields */
#define CM_GCR_CONFIG_NUMIOCU_SHF		8
#define CM_GCR_CONFIG_NUMIOCU_MSK		(_ULCAST_(0xf) << 8)
#define CM_GCR_CONFIG_PCORES_SHF		0
#define CM_GCR_CONFIG_PCORES_MSK		(_ULCAST_(0xff) << 0)

/* GCR_BASE register fields */
#define CM_GCR_BASE_GCRBASE_SHF			15
#define CM_GCR_BASE_GCRBASE_MSK			(_ULCAST_(0x1ffff) << 15)
#define CM_GCR_BASE_CMDEFTGT_SHF		0
#define CM_GCR_BASE_CMDEFTGT_MSK		(_ULCAST_(0x3) << 0)
#define  CM_GCR_BASE_CMDEFTGT_DISABLED		0
#define  CM_GCR_BASE_CMDEFTGT_MEM		1
#define  CM_GCR_BASE_CMDEFTGT_IOCU0		2
#define  CM_GCR_BASE_CMDEFTGT_IOCU1		3

/* GCR_ACCESS register fields */
#define CM_GCR_ACCESS_ACCESSEN_SHF		0
#define CM_GCR_ACCESS_ACCESSEN_MSK		(_ULCAST_(0xff) << 0)

/* GCR_REV register fields */
#define CM_GCR_REV_MAJOR_SHF			8
#define CM_GCR_REV_MAJOR_MSK			(_ULCAST_(0xff) << 8)
#define CM_GCR_REV_MINOR_SHF			0
#define CM_GCR_REV_MINOR_MSK			(_ULCAST_(0xff) << 0)

/* GCR_ERROR_CAUSE register fields */
#define CM_GCR_ERROR_CAUSE_ERRTYPE_SHF		27
#define CM_GCR_ERROR_CAUSE_ERRTYPE_MSK		(_ULCAST_(0x1f) << 27)
#define CM_GCR_ERROR_CAUSE_ERRINFO_SHF		0
#define CM_GCR_ERROR_CAUSE_ERRINGO_MSK		(_ULCAST_(0x7ffffff) << 0)

/* GCR_ERROR_MULT register fields */
#define CM_GCR_ERROR_MULT_ERR2ND_SHF		0
#define CM_GCR_ERROR_MULT_ERR2ND_MSK		(_ULCAST_(0x1f) << 0)

/* GCR_L2_ONLY_SYNC_BASE register fields */
#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCBASE_SHF	12
#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCBASE_MSK	(_ULCAST_(0xfffff) << 12)
#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCEN_SHF	0
#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCEN_MSK	(_ULCAST_(0x1) << 0)

/* GCR_GIC_BASE register fields */
#define CM_GCR_GIC_BASE_GICBASE_SHF		17
#define CM_GCR_GIC_BASE_GICBASE_MSK		(_ULCAST_(0x7fff) << 17)
#define CM_GCR_GIC_BASE_GICEN_SHF		0
#define CM_GCR_GIC_BASE_GICEN_MSK		(_ULCAST_(0x1) << 0)

/* GCR_CPC_BASE register fields */
#define CM_GCR_CPC_BASE_CPCBASE_SHF		17
#define CM_GCR_CPC_BASE_CPCBASE_MSK		(_ULCAST_(0x7fff) << 17)
#define CM_GCR_CPC_BASE_CPCEN_SHF		0
#define CM_GCR_CPC_BASE_CPCEN_MSK		(_ULCAST_(0x1) << 0)

/* GCR_REGn_BASE register fields */
#define CM_GCR_REGn_BASE_BASEADDR_SHF		16
#define CM_GCR_REGn_BASE_BASEADDR_MSK		(_ULCAST_(0xffff) << 16)

/* GCR_REGn_MASK register fields */
#define CM_GCR_REGn_MASK_ADDRMASK_SHF		16
#define CM_GCR_REGn_MASK_ADDRMASK_MSK		(_ULCAST_(0xffff) << 16)
#define CM_GCR_REGn_MASK_CCAOVR_SHF		5
#define CM_GCR_REGn_MASK_CCAOVR_MSK		(_ULCAST_(0x3) << 5)
#define CM_GCR_REGn_MASK_CCAOVREN_SHF		4
#define CM_GCR_REGn_MASK_CCAOVREN_MSK		(_ULCAST_(0x1) << 4)
#define CM_GCR_REGn_MASK_DROPL2_SHF		2
#define CM_GCR_REGn_MASK_DROPL2_MSK		(_ULCAST_(0x1) << 2)
#define CM_GCR_REGn_MASK_CMTGT_SHF		0
#define CM_GCR_REGn_MASK_CMTGT_MSK		(_ULCAST_(0x3) << 0)
#define  CM_GCR_REGn_MASK_CMTGT_DISABLED	(_ULCAST_(0x0) << 0)
#define  CM_GCR_REGn_MASK_CMTGT_MEM		(_ULCAST_(0x1) << 0)
#define  CM_GCR_REGn_MASK_CMTGT_IOCU0		(_ULCAST_(0x2) << 0)
#define  CM_GCR_REGn_MASK_CMTGT_IOCU1		(_ULCAST_(0x3) << 0)

/* GCR_GIC_STATUS register fields */
#define CM_GCR_GIC_STATUS_EX_SHF		0
#define CM_GCR_GIC_STATUS_EX_MSK		(_ULCAST_(0x1) << 0)

/* GCR_CPC_STATUS register fields */
#define CM_GCR_CPC_STATUS_EX_SHF		0
#define CM_GCR_CPC_STATUS_EX_MSK		(_ULCAST_(0x1) << 0)

/* GCR_Cx_COHERENCE register fields */
#define CM_GCR_Cx_COHERENCE_COHDOMAINEN_SHF	0
#define CM_GCR_Cx_COHERENCE_COHDOMAINEN_MSK	(_ULCAST_(0xff) << 0)

/* GCR_Cx_CONFIG register fields */
#define CM_GCR_Cx_CONFIG_IOCUTYPE_SHF		10
#define CM_GCR_Cx_CONFIG_IOCUTYPE_MSK		(_ULCAST_(0x3) << 10)
#define CM_GCR_Cx_CONFIG_PVPE_SHF		0
#define CM_GCR_Cx_CONFIG_PVPE_MSK		(_ULCAST_(0x1ff) << 0)

/* GCR_Cx_OTHER register fields */
#define CM_GCR_Cx_OTHER_CORENUM_SHF		16
#define CM_GCR_Cx_OTHER_CORENUM_MSK		(_ULCAST_(0xffff) << 16)

/* GCR_Cx_RESET_BASE register fields */
#define CM_GCR_Cx_RESET_BASE_BEVEXCBASE_SHF	12
#define CM_GCR_Cx_RESET_BASE_BEVEXCBASE_MSK	(_ULCAST_(0xfffff) << 12)

/* GCR_Cx_RESET_EXT_BASE register fields */
#define CM_GCR_Cx_RESET_EXT_BASE_EVARESET_SHF	31
#define CM_GCR_Cx_RESET_EXT_BASE_EVARESET_MSK	(_ULCAST_(0x1) << 31)
#define CM_GCR_Cx_RESET_EXT_BASE_UEB_SHF	30
#define CM_GCR_Cx_RESET_EXT_BASE_UEB_MSK	(_ULCAST_(0x1) << 30)
#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCMASK_SHF	20
#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCMASK_MSK	(_ULCAST_(0xff) << 20)
#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCPA_SHF	1
#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCPA_MSK	(_ULCAST_(0x7f) << 1)
#define CM_GCR_Cx_RESET_EXT_BASE_PRESENT_SHF	0
#define CM_GCR_Cx_RESET_EXT_BASE_PRESENT_MSK	(_ULCAST_(0x1) << 0)

/**
 * mips_cm_numcores - return the number of cores present in the system
 *
 * Returns the value of the PCORES field of the GCR_CONFIG register plus 1, or
 * zero if no Coherence Manager is present.
 */
static inline unsigned mips_cm_numcores(void)
{
	if (!mips_cm_present())
		return 0;

	return ((read_gcr_config() & CM_GCR_CONFIG_PCORES_MSK)
		>> CM_GCR_CONFIG_PCORES_SHF) + 1;
}

/**
 * mips_cm_numiocu - return the number of IOCUs present in the system
 *
 * Returns the value of the NUMIOCU field of the GCR_CONFIG register, or zero
 * if no Coherence Manager is present.
 */
static inline unsigned mips_cm_numiocu(void)
{
	if (!mips_cm_present())
		return 0;

	return (read_gcr_config() & CM_GCR_CONFIG_NUMIOCU_MSK)
		>> CM_GCR_CONFIG_NUMIOCU_SHF;
}

/**
 * mips_cm_l2sync - perform an L2-only sync operation
 *
 * If an L2-only sync region is present in the system then this function
 * performs and L2-only sync and returns zero. Otherwise it returns -ENODEV.
 */
static inline int mips_cm_l2sync(void)
{
	if (!mips_cm_has_l2sync())
		return -ENODEV;

	writel(0, mips_cm_l2sync_base);
	return 0;
}

#endif /* __MIPS_ASM_MIPS_CM_H__ */
Commit	Line	Data
9f98f3dd PB	1	/*
	2	* Copyright (C) 2013 Imagination Technologies
	3	* Author: Paul Burton <paul.burton@imgtec.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of the GNU General Public License as published by the
	7	* Free Software Foundation; either version 2 of the License, or (at your
	8	* option) any later version.
	9	*/
	10
	11	#ifndef __MIPS_ASM_MIPS_CM_H__
	12	#define __MIPS_ASM_MIPS_CM_H__
	13
	14	#include <linux/io.h>
	15	#include <linux/types.h>
	16
	17	/* The base address of the CM GCR block */
	18	extern void __iomem *mips_cm_base;
	19
	20	/* The base address of the CM L2-only sync region */
	21	extern void __iomem *mips_cm_l2sync_base;
	22
	23	/**
	24	* __mips_cm_phys_base - retrieve the physical base address of the CM
	25	*
	26	* This function returns the physical base address of the Coherence Manager
	27	* global control block, or 0 if no Coherence Manager is present. It provides
	28	* a default implementation which reads the CMGCRBase register where available,
	29	* and may be overriden by platforms which determine this address in a
	30	* different way by defining a function with the same prototype except for the
	31	* name mips_cm_phys_base (without underscores).
	32	*/
	33	extern phys_t __mips_cm_phys_base(void);
	34
	35	/**
	36	* mips_cm_probe - probe for a Coherence Manager
	37	*
	38	* Attempt to detect the presence of a Coherence Manager. Returns 0 if a CM
	39	* is successfully detected, else -errno.
	40	*/
	41	#ifdef CONFIG_MIPS_CM
	42	extern int mips_cm_probe(void);
	43	#else
	44	static inline int mips_cm_probe(void)
	45	{
	46	return -ENODEV;
	47	}
	48	#endif
	49
	50	/**
	51	* mips_cm_present - determine whether a Coherence Manager is present
	52	*
	53	* Returns true if a CM is present in the system, else false.
	54	*/
	55	static inline bool mips_cm_present(void)
	56	{
	57	#ifdef CONFIG_MIPS_CM
	58	return mips_cm_base != NULL;
	59	#else
	60	return false;
	61	#endif
	62	}
	63
	64	/**
65	* mips_cm_has_l2sync - determine whether an L2-only sync region is present
66	*
67	* Returns true if the system implements an L2-only sync region, else false.
68	*/
69	static inline bool mips_cm_has_l2sync(void)
70	{
71	#ifdef CONFIG_MIPS_CM
72	return mips_cm_l2sync_base != NULL;
73	#else
74	return false;
75	#endif
76	}
77
78	/* Offsets to register blocks from the CM base address */
79	#define MIPS_CM_GCB_OFS 0x0000 /* Global Control Block */
80	#define MIPS_CM_CLCB_OFS 0x2000 /* Core Local Control Block */
81	#define MIPS_CM_COCB_OFS 0x4000 /* Core Other Control Block */
82	#define MIPS_CM_GDB_OFS 0x6000 /* Global Debug Block */
83
84	/* Total size of the CM memory mapped registers */
85	#define MIPS_CM_GCR_SIZE 0x8000
86
87	/* Size of the L2-only sync region */
88	#define MIPS_CM_L2SYNC_SIZE 0x1000
89
90	/* Macros to ease the creation of register access functions */
91	#define BUILD_CM_R_(name, off) \
92	static inline u32 *addr_gcr_##name(void) \
93	{ \
94	return (u32 *)(mips_cm_base + (off)); \
95	} \
96	\
97	static inline u32 read_gcr_##name(void) \
98	{ \
99	return readl(addr_gcr_##name()); \
100	}
101
102	#define BUILD_CM__W(name, off) \
103	static inline void write_gcr_##name(u32 value) \
104	{ \
105	writel(value, addr_gcr_##name()); \
106	}
107
108	#define BUILD_CM_RW(name, off) \
109	BUILD_CM_R_(name, off) \
110	BUILD_CM__W(name, off)
111
112	#define BUILD_CM_Cx_R_(name, off) \
113	BUILD_CM_R_(cl_##name, MIPS_CM_CLCB_OFS + (off)) \
114	BUILD_CM_R_(co_##name, MIPS_CM_COCB_OFS + (off))
115
116	#define BUILD_CM_Cx__W(name, off) \
117	BUILD_CM__W(cl_##name, MIPS_CM_CLCB_OFS + (off)) \
118	BUILD_CM__W(co_##name, MIPS_CM_COCB_OFS + (off))
119
120	#define BUILD_CM_Cx_RW(name, off) \
121	BUILD_CM_Cx_R_(name, off) \
122	BUILD_CM_Cx__W(name, off)
123
124	/* GCB register accessor functions */
125	BUILD_CM_R_(config, MIPS_CM_GCB_OFS + 0x00)
126	BUILD_CM_RW(base, MIPS_CM_GCB_OFS + 0x08)
127	BUILD_CM_RW(access, MIPS_CM_GCB_OFS + 0x20)
128	BUILD_CM_R_(rev, MIPS_CM_GCB_OFS + 0x30)
129	BUILD_CM_RW(error_mask, MIPS_CM_GCB_OFS + 0x40)
130	BUILD_CM_RW(error_cause, MIPS_CM_GCB_OFS + 0x48)
131	BUILD_CM_RW(error_addr, MIPS_CM_GCB_OFS + 0x50)
132	BUILD_CM_RW(error_mult, MIPS_CM_GCB_OFS + 0x58)
133	BUILD_CM_RW(l2_only_sync_base, MIPS_CM_GCB_OFS + 0x70)
134	BUILD_CM_RW(gic_base, MIPS_CM_GCB_OFS + 0x80)
135	BUILD_CM_RW(cpc_base, MIPS_CM_GCB_OFS + 0x88)
136	BUILD_CM_RW(reg0_base, MIPS_CM_GCB_OFS + 0x90)
137	BUILD_CM_RW(reg0_mask, MIPS_CM_GCB_OFS + 0x98)
138	BUILD_CM_RW(reg1_base, MIPS_CM_GCB_OFS + 0xa0)
139	BUILD_CM_RW(reg1_mask, MIPS_CM_GCB_OFS + 0xa8)
140	BUILD_CM_RW(reg2_base, MIPS_CM_GCB_OFS + 0xb0)
141	BUILD_CM_RW(reg2_mask, MIPS_CM_GCB_OFS + 0xb8)
142	BUILD_CM_RW(reg3_base, MIPS_CM_GCB_OFS + 0xc0)
143	BUILD_CM_RW(reg3_mask, MIPS_CM_GCB_OFS + 0xc8)
144	BUILD_CM_R_(gic_status, MIPS_CM_GCB_OFS + 0xd0)
145	BUILD_CM_R_(cpc_status, MIPS_CM_GCB_OFS + 0xf0)
146
147	/* Core Local & Core Other register accessor functions */
148	BUILD_CM_Cx_RW(reset_release, 0x00)
149	BUILD_CM_Cx_RW(coherence, 0x08)
150	BUILD_CM_Cx_R_(config, 0x10)
151	BUILD_CM_Cx_RW(other, 0x18)
152	BUILD_CM_Cx_RW(reset_base, 0x20)
153	BUILD_CM_Cx_R_(id, 0x28)
154	BUILD_CM_Cx_RW(reset_ext_base, 0x30)
155	BUILD_CM_Cx_R_(tcid_0_priority, 0x40)
156	BUILD_CM_Cx_R_(tcid_1_priority, 0x48)
157	BUILD_CM_Cx_R_(tcid_2_priority, 0x50)
158	BUILD_CM_Cx_R_(tcid_3_priority, 0x58)
159	BUILD_CM_Cx_R_(tcid_4_priority, 0x60)
160	BUILD_CM_Cx_R_(tcid_5_priority, 0x68)
161	BUILD_CM_Cx_R_(tcid_6_priority, 0x70)
162	BUILD_CM_Cx_R_(tcid_7_priority, 0x78)
163	BUILD_CM_Cx_R_(tcid_8_priority, 0x80)
164
165	/* GCR_CONFIG register fields */
166	#define CM_GCR_CONFIG_NUMIOCU_SHF 8
167	#define CM_GCR_CONFIG_NUMIOCU_MSK (_ULCAST_(0xf) << 8)
168	#define CM_GCR_CONFIG_PCORES_SHF 0
169	#define CM_GCR_CONFIG_PCORES_MSK (_ULCAST_(0xff) << 0)
170
171	/* GCR_BASE register fields */
172	#define CM_GCR_BASE_GCRBASE_SHF 15
173	#define CM_GCR_BASE_GCRBASE_MSK (_ULCAST_(0x1ffff) << 15)
174	#define CM_GCR_BASE_CMDEFTGT_SHF 0
175	#define CM_GCR_BASE_CMDEFTGT_MSK (_ULCAST_(0x3) << 0)
176	#define CM_GCR_BASE_CMDEFTGT_DISABLED 0
177	#define CM_GCR_BASE_CMDEFTGT_MEM 1
178	#define CM_GCR_BASE_CMDEFTGT_IOCU0 2
179	#define CM_GCR_BASE_CMDEFTGT_IOCU1 3
180
181	/* GCR_ACCESS register fields */
182	#define CM_GCR_ACCESS_ACCESSEN_SHF 0
183	#define CM_GCR_ACCESS_ACCESSEN_MSK (_ULCAST_(0xff) << 0)
184
185	/* GCR_REV register fields */
186	#define CM_GCR_REV_MAJOR_SHF 8
187	#define CM_GCR_REV_MAJOR_MSK (_ULCAST_(0xff) << 8)
188	#define CM_GCR_REV_MINOR_SHF 0
189	#define CM_GCR_REV_MINOR_MSK (_ULCAST_(0xff) << 0)
190
191	/* GCR_ERROR_CAUSE register fields */
192	#define CM_GCR_ERROR_CAUSE_ERRTYPE_SHF 27
193	#define CM_GCR_ERROR_CAUSE_ERRTYPE_MSK (_ULCAST_(0x1f) << 27)
194	#define CM_GCR_ERROR_CAUSE_ERRINFO_SHF 0
195	#define CM_GCR_ERROR_CAUSE_ERRINGO_MSK (_ULCAST_(0x7ffffff) << 0)
196
197	/* GCR_ERROR_MULT register fields */
198	#define CM_GCR_ERROR_MULT_ERR2ND_SHF 0
199	#define CM_GCR_ERROR_MULT_ERR2ND_MSK (_ULCAST_(0x1f) << 0)
200
201	/* GCR_L2_ONLY_SYNC_BASE register fields */
202	#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCBASE_SHF 12
203	#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCBASE_MSK (_ULCAST_(0xfffff) << 12)
204	#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCEN_SHF 0
205	#define CM_GCR_L2_ONLY_SYNC_BASE_SYNCEN_MSK (_ULCAST_(0x1) << 0)
206
207	/* GCR_GIC_BASE register fields */
208	#define CM_GCR_GIC_BASE_GICBASE_SHF 17
209	#define CM_GCR_GIC_BASE_GICBASE_MSK (_ULCAST_(0x7fff) << 17)
210	#define CM_GCR_GIC_BASE_GICEN_SHF 0
211	#define CM_GCR_GIC_BASE_GICEN_MSK (_ULCAST_(0x1) << 0)
212
213	/* GCR_CPC_BASE register fields */
214	#define CM_GCR_CPC_BASE_CPCBASE_SHF 17
215	#define CM_GCR_CPC_BASE_CPCBASE_MSK (_ULCAST_(0x7fff) << 17)
216	#define CM_GCR_CPC_BASE_CPCEN_SHF 0
217	#define CM_GCR_CPC_BASE_CPCEN_MSK (_ULCAST_(0x1) << 0)
218
219	/* GCR_REGn_BASE register fields */
220	#define CM_GCR_REGn_BASE_BASEADDR_SHF 16
221	#define CM_GCR_REGn_BASE_BASEADDR_MSK (_ULCAST_(0xffff) << 16)
222
223	/* GCR_REGn_MASK register fields */
224	#define CM_GCR_REGn_MASK_ADDRMASK_SHF 16
225	#define CM_GCR_REGn_MASK_ADDRMASK_MSK (_ULCAST_(0xffff) << 16)
226	#define CM_GCR_REGn_MASK_CCAOVR_SHF 5
227	#define CM_GCR_REGn_MASK_CCAOVR_MSK (_ULCAST_(0x3) << 5)
228	#define CM_GCR_REGn_MASK_CCAOVREN_SHF 4
229	#define CM_GCR_REGn_MASK_CCAOVREN_MSK (_ULCAST_(0x1) << 4)
230	#define CM_GCR_REGn_MASK_DROPL2_SHF 2
231	#define CM_GCR_REGn_MASK_DROPL2_MSK (_ULCAST_(0x1) << 2)
232	#define CM_GCR_REGn_MASK_CMTGT_SHF 0
233	#define CM_GCR_REGn_MASK_CMTGT_MSK (_ULCAST_(0x3) << 0)
234	#define CM_GCR_REGn_MASK_CMTGT_DISABLED (_ULCAST_(0x0) << 0)
235	#define CM_GCR_REGn_MASK_CMTGT_MEM (_ULCAST_(0x1) << 0)
236	#define CM_GCR_REGn_MASK_CMTGT_IOCU0 (_ULCAST_(0x2) << 0)
237	#define CM_GCR_REGn_MASK_CMTGT_IOCU1 (_ULCAST_(0x3) << 0)
238
239	/* GCR_GIC_STATUS register fields */
240	#define CM_GCR_GIC_STATUS_EX_SHF 0
241	#define CM_GCR_GIC_STATUS_EX_MSK (_ULCAST_(0x1) << 0)
242
243	/* GCR_CPC_STATUS register fields */
244	#define CM_GCR_CPC_STATUS_EX_SHF 0
245	#define CM_GCR_CPC_STATUS_EX_MSK (_ULCAST_(0x1) << 0)
246
247	/* GCR_Cx_COHERENCE register fields */
248	#define CM_GCR_Cx_COHERENCE_COHDOMAINEN_SHF 0
249	#define CM_GCR_Cx_COHERENCE_COHDOMAINEN_MSK (_ULCAST_(0xff) << 0)
250
251	/* GCR_Cx_CONFIG register fields */
252	#define CM_GCR_Cx_CONFIG_IOCUTYPE_SHF 10
253	#define CM_GCR_Cx_CONFIG_IOCUTYPE_MSK (_ULCAST_(0x3) << 10)
254	#define CM_GCR_Cx_CONFIG_PVPE_SHF 0
255	#define CM_GCR_Cx_CONFIG_PVPE_MSK (_ULCAST_(0x1ff) << 0)
256
257	/* GCR_Cx_OTHER register fields */
258	#define CM_GCR_Cx_OTHER_CORENUM_SHF 16
259	#define CM_GCR_Cx_OTHER_CORENUM_MSK (_ULCAST_(0xffff) << 16)
260
261	/* GCR_Cx_RESET_BASE register fields */
262	#define CM_GCR_Cx_RESET_BASE_BEVEXCBASE_SHF 12
263	#define CM_GCR_Cx_RESET_BASE_BEVEXCBASE_MSK (_ULCAST_(0xfffff) << 12)
264
265	/* GCR_Cx_RESET_EXT_BASE register fields */
266	#define CM_GCR_Cx_RESET_EXT_BASE_EVARESET_SHF 31
267	#define CM_GCR_Cx_RESET_EXT_BASE_EVARESET_MSK (_ULCAST_(0x1) << 31)
268	#define CM_GCR_Cx_RESET_EXT_BASE_UEB_SHF 30
269	#define CM_GCR_Cx_RESET_EXT_BASE_UEB_MSK (_ULCAST_(0x1) << 30)
270	#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCMASK_SHF 20
271	#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCMASK_MSK (_ULCAST_(0xff) << 20)
272	#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCPA_SHF 1
273	#define CM_GCR_Cx_RESET_EXT_BASE_BEVEXCPA_MSK (_ULCAST_(0x7f) << 1)
274	#define CM_GCR_Cx_RESET_EXT_BASE_PRESENT_SHF 0
275	#define CM_GCR_Cx_RESET_EXT_BASE_PRESENT_MSK (_ULCAST_(0x1) << 0)
276
277	/**
278	* mips_cm_numcores - return the number of cores present in the system
279	*
280	* Returns the value of the PCORES field of the GCR_CONFIG register plus 1, or
281	* zero if no Coherence Manager is present.
282	*/
283	static inline unsigned mips_cm_numcores(void)
284	{
285	if (!mips_cm_present())
286	return 0;
287
288	return ((read_gcr_config() & CM_GCR_CONFIG_PCORES_MSK)
289	>> CM_GCR_CONFIG_PCORES_SHF) + 1;
290	}
291
292	/**
293	* mips_cm_numiocu - return the number of IOCUs present in the system
294	*
295	* Returns the value of the NUMIOCU field of the GCR_CONFIG register, or zero
296	* if no Coherence Manager is present.
297	*/
298	static inline unsigned mips_cm_numiocu(void)
299	{
300	if (!mips_cm_present())
301	return 0;
302
303	return (read_gcr_config() & CM_GCR_CONFIG_NUMIOCU_MSK)
304	>> CM_GCR_CONFIG_NUMIOCU_SHF;
305	}
306
307	/**
308	* mips_cm_l2sync - perform an L2-only sync operation
309	*
310	* If an L2-only sync region is present in the system then this function
311	* performs and L2-only sync and returns zero. Otherwise it returns -ENODEV.
312	*/
313	static inline int mips_cm_l2sync(void)
314	{
315	if (!mips_cm_has_l2sync())
316	return -ENODEV;
317
318	writel(0, mips_cm_l2sync_base);
319	return 0;
320	}
321
322	#endif /* __MIPS_ASM_MIPS_CM_H__ */