[deliverable/linux.git] / arch / sparc / include / asm / leon.h

/*
 * Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com) Gaisler Research
 * Copyright (C) 2004 Stefan Holst (mail@s-holst.de) Uni-Stuttgart
 * Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
 * Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
 */

#ifndef LEON_H_INCLUDE
#define LEON_H_INCLUDE

#ifdef CONFIG_SPARC_LEON

#define ASI_LEON_NOCACHE	0x01

#define ASI_LEON_DCACHE_MISS	0x1

#define ASI_LEON_CACHEREGS	0x02
#define ASI_LEON_IFLUSH		0x10
#define ASI_LEON_DFLUSH		0x11

#define ASI_LEON_MMUFLUSH	0x18
#define ASI_LEON_MMUREGS	0x19
#define ASI_LEON_BYPASS		0x1c
#define ASI_LEON_FLUSH_PAGE	0x10

/* mmu register access, ASI_LEON_MMUREGS */
#define LEON_CNR_CTRL		0x000
#define LEON_CNR_CTXP		0x100
#define LEON_CNR_CTX		0x200
#define LEON_CNR_F		0x300
#define LEON_CNR_FADDR		0x400

#define LEON_CNR_CTX_NCTX	256	/*number of MMU ctx */

#define LEON_CNR_CTRL_TLBDIS	0x80000000

#define LEON_MMUTLB_ENT_MAX	64

/*
 * diagnostic access from mmutlb.vhd:
 * 0: pte address
 * 4: pte
 * 8: additional flags
 */
#define LEON_DIAGF_LVL		0x3
#define LEON_DIAGF_WR		0x8
#define LEON_DIAGF_WR_SHIFT	3
#define LEON_DIAGF_HIT		0x10
#define LEON_DIAGF_HIT_SHIFT	4
#define LEON_DIAGF_CTX		0x1fe0
#define LEON_DIAGF_CTX_SHIFT	5
#define LEON_DIAGF_VALID	0x2000
#define LEON_DIAGF_VALID_SHIFT	13

/*
 *  Interrupt Sources
 *
 *  The interrupt source numbers directly map to the trap type and to
 *  the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
 *  and the Interrupt Pending Registers.
 */
#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR	1
#define LEON_INTERRUPT_UART_1_RX_TX		2
#define LEON_INTERRUPT_UART_0_RX_TX		3
#define LEON_INTERRUPT_EXTERNAL_0		4
#define LEON_INTERRUPT_EXTERNAL_1		5
#define LEON_INTERRUPT_EXTERNAL_2		6
#define LEON_INTERRUPT_EXTERNAL_3		7
#define LEON_INTERRUPT_TIMER1			8
#define LEON_INTERRUPT_TIMER2			9
#define LEON_INTERRUPT_EMPTY1			10
#define LEON_INTERRUPT_EMPTY2			11
#define LEON_INTERRUPT_OPEN_ETH			12
#define LEON_INTERRUPT_EMPTY4			13
#define LEON_INTERRUPT_EMPTY5			14
#define LEON_INTERRUPT_EMPTY6			15

/* irq masks */
#define LEON_HARD_INT(x)	(1 << (x))	/* irq 0-15 */
#define LEON_IRQMASK_R		0x0000fffe	/* bit 15- 1 of lregs.irqmask */
#define LEON_IRQPRIO_R		0xfffe0000	/* bit 31-17 of lregs.irqmask */

/* leon uart register definitions */
#define LEON_OFF_UDATA	0x0
#define LEON_OFF_USTAT	0x4
#define LEON_OFF_UCTRL	0x8
#define LEON_OFF_USCAL	0xc

#define LEON_UCTRL_RE	0x01
#define LEON_UCTRL_TE	0x02
#define LEON_UCTRL_RI	0x04
#define LEON_UCTRL_TI	0x08
#define LEON_UCTRL_PS	0x10
#define LEON_UCTRL_PE	0x20
#define LEON_UCTRL_FL	0x40
#define LEON_UCTRL_LB	0x80

#define LEON_USTAT_DR	0x01
#define LEON_USTAT_TS	0x02
#define LEON_USTAT_TH	0x04
#define LEON_USTAT_BR	0x08
#define LEON_USTAT_OV	0x10
#define LEON_USTAT_PE	0x20
#define LEON_USTAT_FE	0x40

#define LEON_MCFG2_SRAMDIS		0x00002000
#define LEON_MCFG2_SDRAMEN		0x00004000
#define LEON_MCFG2_SRAMBANKSZ		0x00001e00	/* [12-9] */
#define LEON_MCFG2_SRAMBANKSZ_SHIFT	9
#define LEON_MCFG2_SDRAMBANKSZ		0x03800000	/* [25-23] */
#define LEON_MCFG2_SDRAMBANKSZ_SHIFT	23

#define LEON_TCNT0_MASK	0x7fffff

#define LEON_USTAT_ERROR (LEON_USTAT_OV | LEON_USTAT_PE | LEON_USTAT_FE)
/* no break yet */

#define ASI_LEON3_SYSCTRL		0x02
#define ASI_LEON3_SYSCTRL_ICFG		0x08
#define ASI_LEON3_SYSCTRL_DCFG		0x0c
#define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27)
#define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf))

#ifndef __ASSEMBLY__

/* do a virtual address read without cache */
static inline unsigned long leon_readnobuffer_reg(unsigned long paddr)
{
	unsigned long retval;
	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
			     "=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE));
	return retval;
}

/* do a physical address bypass write, i.e. for 0x80000000 */
static inline void leon_store_reg(unsigned long paddr, unsigned long value)
{
	__asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
			     "i"(ASI_LEON_BYPASS) : "memory");
}

/* do a physical address bypass load, i.e. for 0x80000000 */
static inline unsigned long leon_load_reg(unsigned long paddr)
{
	unsigned long retval;
	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
			     "=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
	return retval;
}

static inline void leon_srmmu_disabletlb(void)
{
	unsigned int retval;
	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
			     "i"(ASI_LEON_MMUREGS));
	retval |= LEON_CNR_CTRL_TLBDIS;
	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
			     "i"(ASI_LEON_MMUREGS) : "memory");
}

static inline void leon_srmmu_enabletlb(void)
{
	unsigned int retval;
	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
			     "i"(ASI_LEON_MMUREGS));
	retval = retval & ~LEON_CNR_CTRL_TLBDIS;
	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
			     "i"(ASI_LEON_MMUREGS) : "memory");
}

/* macro access for leon_load_reg() and leon_store_reg() */
#define LEON3_BYPASS_LOAD_PA(x)	    (leon_load_reg((unsigned long)(x)))
#define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v)))
#define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v)
#define LEON3_BYPASS_ORIN_PA(x, v)  LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | v)
#define LEON_BYPASS_LOAD_PA(x)      leon_load_reg((unsigned long)(x))
#define LEON_BYPASS_STORE_PA(x, v)  leon_store_reg((unsigned long)(x), (unsigned long)(v))
#define LEON_REGLOAD_PA(x)          leon_load_reg((unsigned long)(x)+LEON_PREGS)
#define LEON_REGSTORE_PA(x, v)      leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v))
#define LEON_REGSTORE_OR_PA(x, v)   LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v))
#define LEON_REGSTORE_AND_PA(x, v)  LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v))

/* macro access for leon_readnobuffer_reg() */
#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))

extern void sparc_leon_eirq_register(int eirq);
extern void leon_init(void);
extern void leon_switch_mm(void);
extern void leon_init_IRQ(void);

extern unsigned long last_valid_pfn;

static inline unsigned long sparc_leon3_get_dcachecfg(void)
{
	unsigned int retval;
	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
			     "=r"(retval) :
			     "r"(ASI_LEON3_SYSCTRL_DCFG),
			     "i"(ASI_LEON3_SYSCTRL));
	return retval;
}

/* enable snooping */
static inline void sparc_leon3_enable_snooping(void)
{
	__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
			  "set 0x800000, %%l2\n\t"
			  "or  %%l2, %%l1, %%l2\n\t"
			  "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};

static inline int sparc_leon3_snooping_enabled(void)
{
	u32 cctrl;
	__asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
        return (cctrl >> 23) & 1;
};

static inline void sparc_leon3_disable_cache(void)
{
	__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
			  "set 0x00000f, %%l2\n\t"
			  "andn  %%l2, %%l1, %%l2\n\t"
			  "sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
};

static inline unsigned long sparc_leon3_asr17(void)
{
	u32 asr17;
	__asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
	return asr17;
};

static inline int sparc_leon3_cpuid(void)
{
	return sparc_leon3_asr17() >> 28;
}

#endif /*!__ASSEMBLY__*/

#ifdef CONFIG_SMP
# define LEON3_IRQ_RESCHEDULE		13
# define LEON3_IRQ_TICKER		(leon_percpu_timer_dev[0].irq)
# define LEON3_IRQ_CROSS_CALL		15
#endif

#if defined(PAGE_SIZE_LEON_8K)
#define LEON_PAGE_SIZE_LEON 1
#elif defined(PAGE_SIZE_LEON_16K)
#define LEON_PAGE_SIZE_LEON 2)
#else
#define LEON_PAGE_SIZE_LEON 0
#endif

#if LEON_PAGE_SIZE_LEON == 0
/* [ 8, 6, 6 ] + 12 */
#define LEON_PGD_SH    24
#define LEON_PGD_M     0xff
#define LEON_PMD_SH    18
#define LEON_PMD_SH_V  (LEON_PGD_SH-2)
#define LEON_PMD_M     0x3f
#define LEON_PTE_SH    12
#define LEON_PTE_M     0x3f
#elif LEON_PAGE_SIZE_LEON == 1
/* [ 7, 6, 6 ] + 13 */
#define LEON_PGD_SH    25
#define LEON_PGD_M     0x7f
#define LEON_PMD_SH    19
#define LEON_PMD_SH_V  (LEON_PGD_SH-1)
#define LEON_PMD_M     0x3f
#define LEON_PTE_SH    13
#define LEON_PTE_M     0x3f
#elif LEON_PAGE_SIZE_LEON == 2
/* [ 6, 6, 6 ] + 14 */
#define LEON_PGD_SH    26
#define LEON_PGD_M     0x3f
#define LEON_PMD_SH    20
#define LEON_PMD_SH_V  (LEON_PGD_SH-0)
#define LEON_PMD_M     0x3f
#define LEON_PTE_SH    14
#define LEON_PTE_M     0x3f
#elif LEON_PAGE_SIZE_LEON == 3
/* [ 4, 7, 6 ] + 15 */
#define LEON_PGD_SH    28
#define LEON_PGD_M     0x0f
#define LEON_PMD_SH    21
#define LEON_PMD_SH_V  (LEON_PGD_SH-0)
#define LEON_PMD_M     0x7f
#define LEON_PTE_SH    15
#define LEON_PTE_M     0x3f
#else
#error cannot determine LEON_PAGE_SIZE_LEON
#endif

#define PAGE_MIN_SHIFT   (12)
#define PAGE_MIN_SIZE    (1UL << PAGE_MIN_SHIFT)

#define LEON3_XCCR_SETS_MASK  0x07000000UL
#define LEON3_XCCR_SSIZE_MASK 0x00f00000UL

#define LEON2_CCR_DSETS_MASK 0x03000000UL
#define LEON2_CFG_SSIZE_MASK 0x00007000UL

#ifndef __ASSEMBLY__
extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
extern void leon_flush_icache_all(void);
extern void leon_flush_dcache_all(void);
extern void leon_flush_cache_all(void);
extern void leon_flush_tlb_all(void);
extern int leon_flush_during_switch;
extern int leon_flush_needed(void);

struct vm_area_struct;
extern void leon_flush_icache_all(void);
extern void leon_flush_dcache_all(void);
extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
extern void leon_flush_cache_all(void);
extern void leon_flush_tlb_all(void);
extern int leon_flush_during_switch;
extern int leon_flush_needed(void);
extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);

/* struct that hold LEON3 cache configuration registers */
struct leon3_cacheregs {
	unsigned long ccr;	/* 0x00 - Cache Control Register  */
	unsigned long iccr;     /* 0x08 - Instruction Cache Configuration Register */
	unsigned long dccr;	/* 0x0c - Data Cache Configuration Register */
};

/* struct that hold LEON2 cache configuration register
 * & configuration register
 */
struct leon2_cacheregs {
	unsigned long ccr, cfg;
};

#ifdef __KERNEL__

#include <linux/interrupt.h>

struct device_node;
extern int sparc_leon_eirq_get(int eirq, int cpu);
extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
extern void sparc_leon_eirq_register(int eirq);
extern void leon_clear_clock_irq(void);
extern void leon_load_profile_irq(int cpu, unsigned int limit);
extern void leon_init_timers(irq_handler_t counter_fn);
extern void leon_clear_clock_irq(void);
extern void leon_load_profile_irq(int cpu, unsigned int limit);
extern void leon_trans_init(struct device_node *dp);
extern void leon_node_init(struct device_node *dp, struct device_node ***nextp);
extern void leon_init_IRQ(void);
extern void leon_init(void);
extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
extern void init_leon(void);
extern void poke_leonsparc(void);
extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
extern int leon_flush_needed(void);
extern void leon_switch_mm(void);
extern int srmmu_swprobe_trace;

#ifdef CONFIG_SMP
extern int leon_smp_nrcpus(void);
extern void leon_clear_profile_irq(int cpu);
extern void leon_smp_done(void);
extern void leon_boot_cpus(void);
extern int leon_boot_one_cpu(int i);
void leon_init_smp(void);
extern void cpu_probe(void);
extern void cpu_idle(void);
extern void init_IRQ(void);
extern void cpu_panic(void);
extern int __leon_processor_id(void);
void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);

extern unsigned int real_irq_entry[], smpleon_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
extern unsigned int t_nmi[], linux_trap_ipi15_leon[];
extern unsigned int linux_trap_ipi15_sun4m[];

#endif /* CONFIG_SMP */

#endif /* __KERNEL__ */

#endif /* __ASSEMBLY__ */

/* macros used in leon_mm.c */
#define PFN(x)           ((x) >> PAGE_SHIFT)
#define _pfn_valid(pfn)	 ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
#define _SRMMU_PTE_PMASK_LEON 0xffffffff

#else /* defined(CONFIG_SPARC_LEON) */

/* nop definitions for !LEON case */
#define leon_init() do {} while (0)
#define leon_switch_mm() do {} while (0)
#define leon_init_IRQ() do {} while (0)
#define init_leon() do {} while (0)
#define leon_smp_done() do {} while (0)
#define leon_boot_cpus() do {} while (0)
#define leon_boot_one_cpu(i) 1
#define leon_init_smp() do {} while (0)

#endif /* !defined(CONFIG_SPARC_LEON) */

#endif
Commit	Line	Data
5213a780 KE	1	/*
	2	* Copyright (C) 2004 Konrad Eisele (eiselekd@web.de,konrad@gaisler.com) Gaisler Research
	3	* Copyright (C) 2004 Stefan Holst (mail@s-holst.de) Uni-Stuttgart
	4	* Copyright (C) 2009 Daniel Hellstrom (daniel@gaisler.com) Aeroflex Gaisler AB
	5	* Copyright (C) 2009 Konrad Eisele (konrad@gaisler.com) Aeroflex Gaisler AB
	6	*/
	7
	8	#ifndef LEON_H_INCLUDE
	9	#define LEON_H_INCLUDE
	10
	11	#ifdef CONFIG_SPARC_LEON
	12
	13	#define ASI_LEON_NOCACHE 0x01
	14
	15	#define ASI_LEON_DCACHE_MISS 0x1
	16
	17	#define ASI_LEON_CACHEREGS 0x02
	18	#define ASI_LEON_IFLUSH 0x10
	19	#define ASI_LEON_DFLUSH 0x11
	20
	21	#define ASI_LEON_MMUFLUSH 0x18
	22	#define ASI_LEON_MMUREGS 0x19
	23	#define ASI_LEON_BYPASS 0x1c
	24	#define ASI_LEON_FLUSH_PAGE 0x10
	25
	26	/* mmu register access, ASI_LEON_MMUREGS */
	27	#define LEON_CNR_CTRL 0x000
	28	#define LEON_CNR_CTXP 0x100
	29	#define LEON_CNR_CTX 0x200
	30	#define LEON_CNR_F 0x300
	31	#define LEON_CNR_FADDR 0x400
	32
	33	#define LEON_CNR_CTX_NCTX 256 /number of MMU ctx /
	34
	35	#define LEON_CNR_CTRL_TLBDIS 0x80000000
	36
	37	#define LEON_MMUTLB_ENT_MAX 64
	38
	39	/*
	40	* diagnostic access from mmutlb.vhd:
	41	* 0: pte address
	42	* 4: pte
	43	* 8: additional flags
	44	*/
	45	#define LEON_DIAGF_LVL 0x3
	46	#define LEON_DIAGF_WR 0x8
	47	#define LEON_DIAGF_WR_SHIFT 3
	48	#define LEON_DIAGF_HIT 0x10
	49	#define LEON_DIAGF_HIT_SHIFT 4
	50	#define LEON_DIAGF_CTX 0x1fe0
	51	#define LEON_DIAGF_CTX_SHIFT 5
	52	#define LEON_DIAGF_VALID 0x2000
	53	#define LEON_DIAGF_VALID_SHIFT 13
	54
	55	/*
	56	* Interrupt Sources
	57	*
	58	* The interrupt source numbers directly map to the trap type and to
	59	* the bits used in the Interrupt Clear, Interrupt Force, Interrupt Mask,
	60	* and the Interrupt Pending Registers.
	61	*/
	62	#define LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR 1
	63	#define LEON_INTERRUPT_UART_1_RX_TX 2
	64	#define LEON_INTERRUPT_UART_0_RX_TX 3
65	#define LEON_INTERRUPT_EXTERNAL_0 4
66	#define LEON_INTERRUPT_EXTERNAL_1 5
67	#define LEON_INTERRUPT_EXTERNAL_2 6
68	#define LEON_INTERRUPT_EXTERNAL_3 7
69	#define LEON_INTERRUPT_TIMER1 8
70	#define LEON_INTERRUPT_TIMER2 9
71	#define LEON_INTERRUPT_EMPTY1 10
72	#define LEON_INTERRUPT_EMPTY2 11
73	#define LEON_INTERRUPT_OPEN_ETH 12
74	#define LEON_INTERRUPT_EMPTY4 13
75	#define LEON_INTERRUPT_EMPTY5 14
76	#define LEON_INTERRUPT_EMPTY6 15
77
78	/* irq masks */
79	#define LEON_HARD_INT(x) (1 << (x)) /* irq 0-15 */
80	#define LEON_IRQMASK_R 0x0000fffe /* bit 15- 1 of lregs.irqmask */
81	#define LEON_IRQPRIO_R 0xfffe0000 /* bit 31-17 of lregs.irqmask */
82
83	/* leon uart register definitions */
84	#define LEON_OFF_UDATA 0x0
85	#define LEON_OFF_USTAT 0x4
86	#define LEON_OFF_UCTRL 0x8
87	#define LEON_OFF_USCAL 0xc
88
89	#define LEON_UCTRL_RE 0x01
90	#define LEON_UCTRL_TE 0x02
91	#define LEON_UCTRL_RI 0x04
92	#define LEON_UCTRL_TI 0x08
93	#define LEON_UCTRL_PS 0x10
94	#define LEON_UCTRL_PE 0x20
95	#define LEON_UCTRL_FL 0x40
96	#define LEON_UCTRL_LB 0x80
97
98	#define LEON_USTAT_DR 0x01
99	#define LEON_USTAT_TS 0x02
100	#define LEON_USTAT_TH 0x04
101	#define LEON_USTAT_BR 0x08
102	#define LEON_USTAT_OV 0x10
103	#define LEON_USTAT_PE 0x20
104	#define LEON_USTAT_FE 0x40
105
106	#define LEON_MCFG2_SRAMDIS 0x00002000
107	#define LEON_MCFG2_SDRAMEN 0x00004000
108	#define LEON_MCFG2_SRAMBANKSZ 0x00001e00 /* [12-9] */
109	#define LEON_MCFG2_SRAMBANKSZ_SHIFT 9
110	#define LEON_MCFG2_SDRAMBANKSZ 0x03800000 /* [25-23] */
111	#define LEON_MCFG2_SDRAMBANKSZ_SHIFT 23
112
113	#define LEON_TCNT0_MASK 0x7fffff
114
115	#define LEON_USTAT_ERROR (LEON_USTAT_OV \| LEON_USTAT_PE \| LEON_USTAT_FE)
116	/* no break yet */
117
118	#define ASI_LEON3_SYSCTRL 0x02
119	#define ASI_LEON3_SYSCTRL_ICFG 0x08
120	#define ASI_LEON3_SYSCTRL_DCFG 0x0c
121	#define ASI_LEON3_SYSCTRL_CFG_SNOOPING (1 << 27)
122	#define ASI_LEON3_SYSCTRL_CFG_SSIZE(c) (1 << ((c >> 20) & 0xf))
123
124	#ifndef __ASSEMBLY__
125
126	/* do a virtual address read without cache */
127	static inline unsigned long leon_readnobuffer_reg(unsigned long paddr)
128	{
129	unsigned long retval;
130	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
131	"=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE));
132	return retval;
133	}
134
135	/* do a physical address bypass write, i.e. for 0x80000000 */
136	static inline void leon_store_reg(unsigned long paddr, unsigned long value)
137	{
138	__asm__ __volatile__("sta %0, [%1] %2\n\t" : : "r"(value), "r"(paddr),
139	"i"(ASI_LEON_BYPASS) : "memory");
140	}
141
142	/* do a physical address bypass load, i.e. for 0x80000000 */
143	static inline unsigned long leon_load_reg(unsigned long paddr)
144	{
145	unsigned long retval;
146	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
147	"=r"(retval) : "r"(paddr), "i"(ASI_LEON_BYPASS));
148	return retval;
149	}
150
4309e568	151	static inline void leon_srmmu_disabletlb(void)
5213a780 KE	152	{
	153	unsigned int retval;
	154	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
	155	"i"(ASI_LEON_MMUREGS));
	156	retval \|= LEON_CNR_CTRL_TLBDIS;
	157	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
	158	"i"(ASI_LEON_MMUREGS) : "memory");
	159	}
	160
4309e568	161	static inline void leon_srmmu_enabletlb(void)
5213a780 KE	162	{
	163	unsigned int retval;
	164	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
	165	"i"(ASI_LEON_MMUREGS));
	166	retval = retval & ~LEON_CNR_CTRL_TLBDIS;
	167	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
	168	"i"(ASI_LEON_MMUREGS) : "memory");
	169	}
	170
	171	/* macro access for leon_load_reg() and leon_store_reg() */
	172	#define LEON3_BYPASS_LOAD_PA(x) (leon_load_reg((unsigned long)(x)))
	173	#define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v)))
	174	#define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v)
	175	#define LEON3_BYPASS_ORIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) \| v)
	176	#define LEON_BYPASS_LOAD_PA(x) leon_load_reg((unsigned long)(x))
	177	#define LEON_BYPASS_STORE_PA(x, v) leon_store_reg((unsigned long)(x), (unsigned long)(v))
	178	#define LEON_REGLOAD_PA(x) leon_load_reg((unsigned long)(x)+LEON_PREGS)
	179	#define LEON_REGSTORE_PA(x, v) leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v))
	180	#define LEON_REGSTORE_OR_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) \| (unsigned long)(v))
	181	#define LEON_REGSTORE_AND_PA(x, v) LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v))
	182
	183	/* macro access for leon_readnobuffer_reg() */
	184	#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
	185
	186	extern void sparc_leon_eirq_register(int eirq);
	187	extern void leon_init(void);
	188	extern void leon_switch_mm(void);
	189	extern void leon_init_IRQ(void);
	190
	191	extern unsigned long last_valid_pfn;
	192
4309e568	193	static inline unsigned long sparc_leon3_get_dcachecfg(void)
5213a780 KE	194	{
	195	unsigned int retval;
	196	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
	197	"=r"(retval) :
	198	"r"(ASI_LEON3_SYSCTRL_DCFG),
	199	"i"(ASI_LEON3_SYSCTRL));
	200	return retval;
	201	}
	202
	203	/* enable snooping */
4309e568	204	static inline void sparc_leon3_enable_snooping(void)
5213a780 KE	205	{
	206	__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
	207	"set 0x800000, %%l2\n\t"
	208	"or %%l2, %%l1, %%l2\n\t"
	209	"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
	210	};
	211
4309e568 KG	212	static inline int sparc_leon3_snooping_enabled(void)
	213	{
	214	u32 cctrl;
	215	__asm__ __volatile__("lda [%%g0] 2, %0\n\t" : "=r"(cctrl));
	216	return (cctrl >> 23) & 1;
	217	};
	218
	219	static inline void sparc_leon3_disable_cache(void)
5213a780 KE	220	{
	221	__asm__ __volatile__ ("lda [%%g0] 2, %%l1\n\t"
	222	"set 0x00000f, %%l2\n\t"
	223	"andn %%l2, %%l1, %%l2\n\t"
	224	"sta %%l2, [%%g0] 2\n\t" : : : "l1", "l2");
	225	};
	226
e2305e37 DH	227	static inline unsigned long sparc_leon3_asr17(void)
	228	{
	229	u32 asr17;
	230	__asm__ __volatile__ ("rd %%asr17, %0\n\t" : "=r"(asr17));
	231	return asr17;
	232	};
	233
	234	static inline int sparc_leon3_cpuid(void)
	235	{
	236	return sparc_leon3_asr17() >> 28;
	237	}
	238
5213a780 KE	239	#endif /!__ASSEMBLY__/
	240
	241	#ifdef CONFIG_SMP
	242	# define LEON3_IRQ_RESCHEDULE 13
	243	# define LEON3_IRQ_TICKER (leon_percpu_timer_dev[0].irq)
	244	# define LEON3_IRQ_CROSS_CALL 15
	245	#endif
	246
	247	#if defined(PAGE_SIZE_LEON_8K)
	248	#define LEON_PAGE_SIZE_LEON 1
	249	#elif defined(PAGE_SIZE_LEON_16K)
	250	#define LEON_PAGE_SIZE_LEON 2)
	251	#else
	252	#define LEON_PAGE_SIZE_LEON 0
	253	#endif
	254
	255	#if LEON_PAGE_SIZE_LEON == 0
	256	/* [ 8, 6, 6 ] + 12 */
	257	#define LEON_PGD_SH 24
	258	#define LEON_PGD_M 0xff
	259	#define LEON_PMD_SH 18
	260	#define LEON_PMD_SH_V (LEON_PGD_SH-2)
	261	#define LEON_PMD_M 0x3f
	262	#define LEON_PTE_SH 12
	263	#define LEON_PTE_M 0x3f
	264	#elif LEON_PAGE_SIZE_LEON == 1
	265	/* [ 7, 6, 6 ] + 13 */
	266	#define LEON_PGD_SH 25
	267	#define LEON_PGD_M 0x7f
	268	#define LEON_PMD_SH 19
	269	#define LEON_PMD_SH_V (LEON_PGD_SH-1)
	270	#define LEON_PMD_M 0x3f
	271	#define LEON_PTE_SH 13
	272	#define LEON_PTE_M 0x3f
	273	#elif LEON_PAGE_SIZE_LEON == 2
	274	/* [ 6, 6, 6 ] + 14 */
	275	#define LEON_PGD_SH 26
	276	#define LEON_PGD_M 0x3f
	277	#define LEON_PMD_SH 20
	278	#define LEON_PMD_SH_V (LEON_PGD_SH-0)
	279	#define LEON_PMD_M 0x3f
	280	#define LEON_PTE_SH 14
	281	#define LEON_PTE_M 0x3f
	282	#elif LEON_PAGE_SIZE_LEON == 3
	283	/* [ 4, 7, 6 ] + 15 */
	284	#define LEON_PGD_SH 28
	285	#define LEON_PGD_M 0x0f
	286	#define LEON_PMD_SH 21
	287	#define LEON_PMD_SH_V (LEON_PGD_SH-0)
	288	#define LEON_PMD_M 0x7f
	289	#define LEON_PTE_SH 15
	290	#define LEON_PTE_M 0x3f
	291	#else
	292	#error cannot determine LEON_PAGE_SIZE_LEON
	293	#endif
	294
	295	#define PAGE_MIN_SHIFT (12)
	296	#define PAGE_MIN_SIZE (1UL << PAGE_MIN_SHIFT)
	297
	298	#define LEON3_XCCR_SETS_MASK 0x07000000UL
	299	#define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
	300
	301	#define LEON2_CCR_DSETS_MASK 0x03000000UL
	302	#define LEON2_CFG_SSIZE_MASK 0x00007000UL
303
304	#ifndef __ASSEMBLY__
305	extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
306	extern void leon_flush_icache_all(void);
307	extern void leon_flush_dcache_all(void);
308	extern void leon_flush_cache_all(void);
309	extern void leon_flush_tlb_all(void);
310	extern int leon_flush_during_switch;
311	extern int leon_flush_needed(void);
312
313	struct vm_area_struct;
314	extern void leon_flush_icache_all(void);
315	extern void leon_flush_dcache_all(void);
316	extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
317	extern void leon_flush_cache_all(void);
318	extern void leon_flush_tlb_all(void);
319	extern int leon_flush_during_switch;
320	extern int leon_flush_needed(void);
321	extern void leon_flush_pcache_all(struct vm_area_struct *vma, unsigned long page);
322
323	/* struct that hold LEON3 cache configuration registers */
324	struct leon3_cacheregs {
325	unsigned long ccr; /* 0x00 - Cache Control Register */
326	unsigned long iccr; /* 0x08 - Instruction Cache Configuration Register */
327	unsigned long dccr; /* 0x0c - Data Cache Configuration Register */
328	};
329
330	/* struct that hold LEON2 cache configuration register
331	* & configuration register
332	*/
333	struct leon2_cacheregs {
334	unsigned long ccr, cfg;
335	};
336
337	#ifdef __KERNEL__
338
339	#include <linux/interrupt.h>
340
341	struct device_node;
342	extern int sparc_leon_eirq_get(int eirq, int cpu);
343	extern irqreturn_t sparc_leon_eirq_isr(int dummy, void *dev_id);
344	extern void sparc_leon_eirq_register(int eirq);
345	extern void leon_clear_clock_irq(void);
346	extern void leon_load_profile_irq(int cpu, unsigned int limit);
347	extern void leon_init_timers(irq_handler_t counter_fn);
348	extern void leon_clear_clock_irq(void);
349	extern void leon_load_profile_irq(int cpu, unsigned int limit);
350	extern void leon_trans_init(struct device_node *dp);
351	extern void leon_node_init(struct device_node dp, struct device_node **nextp);
352	extern void leon_init_IRQ(void);
353	extern void leon_init(void);
354	extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
355	extern void init_leon(void);
356	extern void poke_leonsparc(void);
357	extern void leon3_getCacheRegs(struct leon3_cacheregs *regs);
358	extern int leon_flush_needed(void);
359	extern void leon_switch_mm(void);
360	extern int srmmu_swprobe_trace;
361
8401707f KE	362	#ifdef CONFIG_SMP
	363	extern int leon_smp_nrcpus(void);
	364	extern void leon_clear_profile_irq(int cpu);
	365	extern void leon_smp_done(void);
	366	extern void leon_boot_cpus(void);
	367	extern int leon_boot_one_cpu(int i);
	368	void leon_init_smp(void);
	369	extern void cpu_probe(void);
	370	extern void cpu_idle(void);
	371	extern void init_IRQ(void);
	372	extern void cpu_panic(void);
	373	extern int __leon_processor_id(void);
	374	void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
	375
	376	extern unsigned int real_irq_entry[], smpleon_ticker[];
	377	extern unsigned int patchme_maybe_smp_msg[];
8401707f KE	378	extern unsigned int t_nmi[], linux_trap_ipi15_leon[];
	379	extern unsigned int linux_trap_ipi15_sun4m[];
	380
	381	#endif /* CONFIG_SMP */
	382
5213a780 KE	383	#endif /* __KERNEL__ */
	384
	385	#endif /* __ASSEMBLY__ */
	386
	387	/* macros used in leon_mm.c */
	388	#define PFN(x) ((x) >> PAGE_SHIFT)
	389	#define _pfn_valid(pfn) ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
	390	#define _SRMMU_PTE_PMASK_LEON 0xffffffff
	391
	392	#else /* defined(CONFIG_SPARC_LEON) */
	393
	394	/* nop definitions for !LEON case */
	395	#define leon_init() do {} while (0)
	396	#define leon_switch_mm() do {} while (0)
	397	#define leon_init_IRQ() do {} while (0)
	398	#define init_leon() do {} while (0)
8401707f KE	399	#define leon_smp_done() do {} while (0)
	400	#define leon_boot_cpus() do {} while (0)
	401	#define leon_boot_one_cpu(i) 1
	402	#define leon_init_smp() do {} while (0)
5213a780 KE	403
	404	#endif /* !defined(CONFIG_SPARC_LEON) */
	405
	406	#endif