[mirror_ubuntu-bionic-kernel.git] / include / asm-avr32 / processor.h

/*
 * Copyright (C) 2004-2006 Atmel Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef __ASM_AVR32_PROCESSOR_H
#define __ASM_AVR32_PROCESSOR_H

#include <asm/page.h>
#include <asm/cache.h>

#define TASK_SIZE	0x80000000

#ifndef __ASSEMBLY__

static inline void *current_text_addr(void)
{
	register void *pc asm("pc");
	return pc;
}

enum arch_type {
	ARCH_AVR32A,
	ARCH_AVR32B,
	ARCH_MAX
};

enum cpu_type {
	CPU_MORGAN,
	CPU_AT32AP,
	CPU_MAX
};

enum tlb_config {
	TLB_NONE,
	TLB_SPLIT,
	TLB_UNIFIED,
	TLB_INVALID
};

struct avr32_cpuinfo {
	struct clk *clk;
	unsigned long loops_per_jiffy;
	enum arch_type arch_type;
	enum cpu_type cpu_type;
	unsigned short arch_revision;
	unsigned short cpu_revision;
	enum tlb_config tlb_config;

	struct cache_info icache;
	struct cache_info dcache;
};

extern struct avr32_cpuinfo boot_cpu_data;

#ifdef CONFIG_SMP
extern struct avr32_cpuinfo cpu_data[];
#define current_cpu_data cpu_data[smp_processor_id()]
#else
#define cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data
#endif

/* This decides where the kernel will search for a free chunk of vm
 * space during mmap's
 */
#define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 3))

#define cpu_relax()		barrier()
#define cpu_sync_pipeline()	asm volatile("sub pc, -2" : : : "memory")

struct cpu_context {
	unsigned long sr;
	unsigned long pc;
	unsigned long ksp;	/* Kernel stack pointer */
	unsigned long r7;
	unsigned long r6;
	unsigned long r5;
	unsigned long r4;
	unsigned long r3;
	unsigned long r2;
	unsigned long r1;
	unsigned long r0;
};

/* This struct contains the CPU context as stored by switch_to() */
struct thread_struct {
	struct cpu_context cpu_context;
	unsigned long single_step_addr;
	u16 single_step_insn;
};

#define INIT_THREAD {						\
	.cpu_context = {					\
		.ksp = sizeof(init_stack) + (long)&init_stack,	\
	},							\
}

/*
 * Do necessary setup to start up a newly executed thread.
 */
#define start_thread(regs, new_pc, new_sp)	 \
	do {					 \
		set_fs(USER_DS);		 \
		memset(regs, 0, sizeof(*regs));	 \
		regs->sr = MODE_USER;		 \
		regs->pc = new_pc & ~1;		 \
		regs->sp = new_sp;		 \
	} while(0)

struct task_struct;

/* Free all resources held by a thread */
extern void release_thread(struct task_struct *);

/* Create a kernel thread without removing it from tasklists */
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);

/* Prepare to copy thread state - unlazy all lazy status */
#define prepare_to_copy(tsk) do { } while(0)

/* Return saved PC of a blocked thread */
#define thread_saved_pc(tsk)    ((tsk)->thread.cpu_context.pc)

struct pt_regs;
void show_trace(struct task_struct *task, unsigned long *stack,
		struct pt_regs *regs);

extern unsigned long get_wchan(struct task_struct *p);

#define KSTK_EIP(tsk)	((tsk)->thread.cpu_context.pc)
#define KSTK_ESP(tsk)	((tsk)->thread.cpu_context.ksp)

#define ARCH_HAS_PREFETCH

static inline void prefetch(const void *x)
{
	const char *c = x;
	asm volatile("pref %0" : : "r"(c));
}
#define PREFETCH_STRIDE	L1_CACHE_BYTES

#endif /* __ASSEMBLY__ */

#endif /* __ASM_AVR32_PROCESSOR_H */
Commit	Line	Data
5f97f7f9 HS	1	/*
	2	* Copyright (C) 2004-2006 Atmel Corporation
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*/
	8	#ifndef __ASM_AVR32_PROCESSOR_H
	9	#define __ASM_AVR32_PROCESSOR_H
	10
	11	#include <asm/page.h>
	12	#include <asm/cache.h>
	13
	14	#define TASK_SIZE 0x80000000
	15
	16	#ifndef __ASSEMBLY__
	17
	18	static inline void *current_text_addr(void)
	19	{
	20	register void *pc asm("pc");
	21	return pc;
	22	}
	23
	24	enum arch_type {
	25	ARCH_AVR32A,
	26	ARCH_AVR32B,
	27	ARCH_MAX
	28	};
	29
	30	enum cpu_type {
	31	CPU_MORGAN,
	32	CPU_AT32AP,
	33	CPU_MAX
	34	};
	35
	36	enum tlb_config {
	37	TLB_NONE,
	38	TLB_SPLIT,
	39	TLB_UNIFIED,
	40	TLB_INVALID
	41	};
	42
	43	struct avr32_cpuinfo {
	44	struct clk *clk;
	45	unsigned long loops_per_jiffy;
	46	enum arch_type arch_type;
	47	enum cpu_type cpu_type;
	48	unsigned short arch_revision;
	49	unsigned short cpu_revision;
	50	enum tlb_config tlb_config;
	51
	52	struct cache_info icache;
	53	struct cache_info dcache;
	54	};
	55
	56	extern struct avr32_cpuinfo boot_cpu_data;
	57
	58	#ifdef CONFIG_SMP
	59	extern struct avr32_cpuinfo cpu_data[];
	60	#define current_cpu_data cpu_data[smp_processor_id()]
	61	#else
	62	#define cpu_data (&boot_cpu_data)
	63	#define current_cpu_data boot_cpu_data
	64	#endif
65
66	/* This decides where the kernel will search for a free chunk of vm
67	* space during mmap's
68	*/
69	#define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
70
71	#define cpu_relax() barrier()
72	#define cpu_sync_pipeline() asm volatile("sub pc, -2" : : : "memory")
73
74	struct cpu_context {
75	unsigned long sr;
76	unsigned long pc;
77	unsigned long ksp; /* Kernel stack pointer */
78	unsigned long r7;
79	unsigned long r6;
80	unsigned long r5;
81	unsigned long r4;
82	unsigned long r3;
83	unsigned long r2;
84	unsigned long r1;
85	unsigned long r0;
86	};
87
88	/* This struct contains the CPU context as stored by switch_to() */
89	struct thread_struct {
90	struct cpu_context cpu_context;
91	unsigned long single_step_addr;
92	u16 single_step_insn;
93	};
94
95	#define INIT_THREAD { \
96	.cpu_context = { \
97	.ksp = sizeof(init_stack) + (long)&init_stack, \
98	}, \
99	}
100
101	/*
102	* Do necessary setup to start up a newly executed thread.
103	*/
104	#define start_thread(regs, new_pc, new_sp) \
105	do { \
106	set_fs(USER_DS); \
107	memset(regs, 0, sizeof(*regs)); \
108	regs->sr = MODE_USER; \
109	regs->pc = new_pc & ~1; \
110	regs->sp = new_sp; \
111	} while(0)
112
113	struct task_struct;
114
115	/* Free all resources held by a thread */
116	extern void release_thread(struct task_struct *);
117
118	/* Create a kernel thread without removing it from tasklists */
119	extern int kernel_thread(int (fn)(void ), void *arg, unsigned long flags);
120
121	/* Prepare to copy thread state - unlazy all lazy status */
122	#define prepare_to_copy(tsk) do { } while(0)
123
124	/* Return saved PC of a blocked thread */
125	#define thread_saved_pc(tsk) ((tsk)->thread.cpu_context.pc)
126
127	struct pt_regs;
128	void show_trace(struct task_struct task, unsigned long stack,
129	struct pt_regs *regs);
130
131	extern unsigned long get_wchan(struct task_struct *p);
132
133	#define KSTK_EIP(tsk) ((tsk)->thread.cpu_context.pc)
134	#define KSTK_ESP(tsk) ((tsk)->thread.cpu_context.ksp)
135
136	#define ARCH_HAS_PREFETCH
137
138	static inline void prefetch(const void *x)
139	{
140	const char *c = x;
141	asm volatile("pref %0" : : "r"(c));
142	}
143	#define PREFETCH_STRIDE L1_CACHE_BYTES
144
145	#endif /* __ASSEMBLY__ */
146
147	#endif /* __ASM_AVR32_PROCESSOR_H */