[qemu.git] / target-openrisc / cpu.h

/*
 * OpenRISC virtual CPU header.
 *
 * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef CPU_OPENRISC_H
#define CPU_OPENRISC_H

#define TARGET_LONG_BITS 32
#define ELF_MACHINE    EM_OPENRISC

#define CPUArchState struct CPUOpenRISCState

/* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl.  */
struct OpenRISCCPU;

#include "config.h"
#include "qemu-common.h"
#include "exec/cpu-defs.h"
#include "fpu/softfloat.h"
#include "qom/cpu.h"
#include "qapi/error.h"

#define TYPE_OPENRISC_CPU "or32-cpu"

#define OPENRISC_CPU_CLASS(klass) \
    OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
#define OPENRISC_CPU(obj) \
    OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
#define OPENRISC_CPU_GET_CLASS(obj) \
    OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)

/**
 * OpenRISCCPUClass:
 * @parent_reset: The parent class' reset handler.
 *
 * A OpenRISC CPU model.
 */
typedef struct OpenRISCCPUClass {
    /*< private >*/
    CPUClass parent_class;
    /*< public >*/

    void (*parent_reset)(CPUState *cpu);
} OpenRISCCPUClass;

#define NB_MMU_MODES    3

enum {
    MMU_NOMMU_IDX = 0,
    MMU_SUPERVISOR_IDX = 1,
    MMU_USER_IDX = 2,
};

#define TARGET_PAGE_BITS 13

#define TARGET_PHYS_ADDR_SPACE_BITS 32
#define TARGET_VIRT_ADDR_SPACE_BITS 32

#define SET_FP_CAUSE(reg, v)    do {\
                                    (reg) = ((reg) & ~(0x3f << 12)) | \
                                            ((v & 0x3f) << 12);\
                                } while (0)
#define GET_FP_ENABLE(reg)       (((reg) >>  7) & 0x1f)
#define UPDATE_FP_FLAGS(reg, v)   do {\
                                      (reg) |= ((v & 0x1f) << 2);\
                                  } while (0)

/* Version Register */
#define SPR_VR 0xFFFF003F

/* Internal flags, delay slot flag */
#define D_FLAG    1

/* Interrupt */
#define NR_IRQS  32

/* Unit presece register */
enum {
    UPR_UP = (1 << 0),
    UPR_DCP = (1 << 1),
    UPR_ICP = (1 << 2),
    UPR_DMP = (1 << 3),
    UPR_IMP = (1 << 4),
    UPR_MP = (1 << 5),
    UPR_DUP = (1 << 6),
    UPR_PCUR = (1 << 7),
    UPR_PMP = (1 << 8),
    UPR_PICP = (1 << 9),
    UPR_TTP = (1 << 10),
    UPR_CUP = (255 << 24),
};

/* CPU configure register */
enum {
    CPUCFGR_NSGF = (15 << 0),
    CPUCFGR_CGF = (1 << 4),
    CPUCFGR_OB32S = (1 << 5),
    CPUCFGR_OB64S = (1 << 6),
    CPUCFGR_OF32S = (1 << 7),
    CPUCFGR_OF64S = (1 << 8),
    CPUCFGR_OV64S = (1 << 9),
};

/* DMMU configure register */
enum {
    DMMUCFGR_NTW = (3 << 0),
    DMMUCFGR_NTS = (7 << 2),
    DMMUCFGR_NAE = (7 << 5),
    DMMUCFGR_CRI = (1 << 8),
    DMMUCFGR_PRI = (1 << 9),
    DMMUCFGR_TEIRI = (1 << 10),
    DMMUCFGR_HTR = (1 << 11),
};

/* IMMU configure register */
enum {
    IMMUCFGR_NTW = (3 << 0),
    IMMUCFGR_NTS = (7 << 2),
    IMMUCFGR_NAE = (7 << 5),
    IMMUCFGR_CRI = (1 << 8),
    IMMUCFGR_PRI = (1 << 9),
    IMMUCFGR_TEIRI = (1 << 10),
    IMMUCFGR_HTR = (1 << 11),
};

/* Float point control status register */
enum {
    FPCSR_FPEE = 1,
    FPCSR_RM = (3 << 1),
    FPCSR_OVF = (1 << 3),
    FPCSR_UNF = (1 << 4),
    FPCSR_SNF = (1 << 5),
    FPCSR_QNF = (1 << 6),
    FPCSR_ZF = (1 << 7),
    FPCSR_IXF = (1 << 8),
    FPCSR_IVF = (1 << 9),
    FPCSR_INF = (1 << 10),
    FPCSR_DZF = (1 << 11),
};

/* Exceptions indices */
enum {
    EXCP_RESET    = 0x1,
    EXCP_BUSERR   = 0x2,
    EXCP_DPF      = 0x3,
    EXCP_IPF      = 0x4,
    EXCP_TICK     = 0x5,
    EXCP_ALIGN    = 0x6,
    EXCP_ILLEGAL  = 0x7,
    EXCP_INT      = 0x8,
    EXCP_DTLBMISS = 0x9,
    EXCP_ITLBMISS = 0xa,
    EXCP_RANGE    = 0xb,
    EXCP_SYSCALL  = 0xc,
    EXCP_FPE      = 0xd,
    EXCP_TRAP     = 0xe,
    EXCP_NR,
};

/* Supervisor register */
enum {
    SR_SM = (1 << 0),
    SR_TEE = (1 << 1),
    SR_IEE = (1 << 2),
    SR_DCE = (1 << 3),
    SR_ICE = (1 << 4),
    SR_DME = (1 << 5),
    SR_IME = (1 << 6),
    SR_LEE = (1 << 7),
    SR_CE  = (1 << 8),
    SR_F   = (1 << 9),
    SR_CY  = (1 << 10),
    SR_OV  = (1 << 11),
    SR_OVE = (1 << 12),
    SR_DSX = (1 << 13),
    SR_EPH = (1 << 14),
    SR_FO  = (1 << 15),
    SR_SUMRA = (1 << 16),
    SR_SCE = (1 << 17),
};

/* OpenRISC Hardware Capabilities */
enum {
    OPENRISC_FEATURE_NSGF = (15 << 0),
    OPENRISC_FEATURE_CGF = (1 << 4),
    OPENRISC_FEATURE_OB32S = (1 << 5),
    OPENRISC_FEATURE_OB64S = (1 << 6),
    OPENRISC_FEATURE_OF32S = (1 << 7),
    OPENRISC_FEATURE_OF64S = (1 << 8),
    OPENRISC_FEATURE_OV64S = (1 << 9),
};

/* Tick Timer Mode Register */
enum {
    TTMR_TP = (0xfffffff),
    TTMR_IP = (1 << 28),
    TTMR_IE = (1 << 29),
    TTMR_M  = (3 << 30),
};

/* Timer Mode */
enum {
    TIMER_NONE = (0 << 30),
    TIMER_INTR = (1 << 30),
    TIMER_SHOT = (2 << 30),
    TIMER_CONT = (3 << 30),
};

/* TLB size */
enum {
    DTLB_WAYS = 1,
    DTLB_SIZE = 64,
    DTLB_MASK = (DTLB_SIZE-1),
    ITLB_WAYS = 1,
    ITLB_SIZE = 64,
    ITLB_MASK = (ITLB_SIZE-1),
};

/* TLB prot */
enum {
    URE = (1 << 6),
    UWE = (1 << 7),
    SRE = (1 << 8),
    SWE = (1 << 9),

    SXE = (1 << 6),
    UXE = (1 << 7),
};

/* check if tlb available */
enum {
    TLBRET_INVALID = -3,
    TLBRET_NOMATCH = -2,
    TLBRET_BADADDR = -1,
    TLBRET_MATCH = 0
};

typedef struct OpenRISCTLBEntry {
    uint32_t mr;
    uint32_t tr;
} OpenRISCTLBEntry;

#ifndef CONFIG_USER_ONLY
typedef struct CPUOpenRISCTLBContext {
    OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
    OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];

    int (*cpu_openrisc_map_address_code)(struct OpenRISCCPU *cpu,
                                         hwaddr *physical,
                                         int *prot,
                                         target_ulong address, int rw);
    int (*cpu_openrisc_map_address_data)(struct OpenRISCCPU *cpu,
                                         hwaddr *physical,
                                         int *prot,
                                         target_ulong address, int rw);
} CPUOpenRISCTLBContext;
#endif

typedef struct CPUOpenRISCState {
    target_ulong gpr[32];     /* General registers */
    target_ulong pc;          /* Program counter */
    target_ulong npc;         /* Next PC */
    target_ulong ppc;         /* Prev PC */
    target_ulong jmp_pc;      /* Jump PC */

    target_ulong machi;       /* Multiply register MACHI */
    target_ulong maclo;       /* Multiply register MACLO */

    target_ulong fpmaddhi;    /* Multiply and add float register FPMADDHI */
    target_ulong fpmaddlo;    /* Multiply and add float register FPMADDLO */

    target_ulong epcr;        /* Exception PC register */
    target_ulong eear;        /* Exception EA register */

    uint32_t sr;              /* Supervisor register */
    uint32_t vr;              /* Version register */
    uint32_t upr;             /* Unit presence register */
    uint32_t cpucfgr;         /* CPU configure register */
    uint32_t dmmucfgr;        /* DMMU configure register */
    uint32_t immucfgr;        /* IMMU configure register */
    uint32_t esr;             /* Exception supervisor register */
    uint32_t fpcsr;           /* Float register */
    float_status fp_status;

    uint32_t flags;           /* cpu_flags, we only use it for exception
                                 in solt so far.  */
    uint32_t btaken;          /* the SR_F bit */

    CPU_COMMON

#ifndef CONFIG_USER_ONLY
    CPUOpenRISCTLBContext * tlb;

    struct QEMUTimer *timer;
    uint32_t ttmr;          /* Timer tick mode register */
    uint32_t ttcr;          /* Timer tick count register */

    uint32_t picmr;         /* Interrupt mask register */
    uint32_t picsr;         /* Interrupt contrl register*/
#endif
    void *irq[32];          /* Interrupt irq input */
} CPUOpenRISCState;

/**
 * OpenRISCCPU:
 * @env: #CPUOpenRISCState
 *
 * A OpenRISC CPU.
 */
typedef struct OpenRISCCPU {
    /*< private >*/
    CPUState parent_obj;
    /*< public >*/

    CPUOpenRISCState env;

    uint32_t feature;       /* CPU Capabilities */
} OpenRISCCPU;

static inline OpenRISCCPU *openrisc_env_get_cpu(CPUOpenRISCState *env)
{
    return OPENRISC_CPU(container_of(env, OpenRISCCPU, env));
}

#define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))

OpenRISCCPU *cpu_openrisc_init(const char *cpu_model);
void openrisc_cpu_realize(Object *obj, Error **errp);

void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
int cpu_openrisc_exec(CPUOpenRISCState *s);
void do_interrupt(CPUOpenRISCState *env);
void openrisc_translate_init(void);
int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
                                  target_ulong address,
                                  int rw, int mmu_idx);
int cpu_openrisc_signal_handler(int host_signum, void *pinfo, void *puc);

#define cpu_list cpu_openrisc_list
#define cpu_exec cpu_openrisc_exec
#define cpu_gen_code cpu_openrisc_gen_code
#define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
#define cpu_signal_handler cpu_openrisc_signal_handler

#ifndef CONFIG_USER_ONLY
/* hw/openrisc_pic.c */
void cpu_openrisc_pic_init(OpenRISCCPU *cpu);

/* hw/openrisc_timer.c */
void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
void cpu_openrisc_count_update(OpenRISCCPU *cpu);
void cpu_openrisc_count_start(OpenRISCCPU *cpu);
void cpu_openrisc_count_stop(OpenRISCCPU *cpu);

void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
                                hwaddr *physical,
                                int *prot, target_ulong address, int rw);
int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
                               hwaddr *physical,
                               int *prot, target_ulong address, int rw);
int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
                               hwaddr *physical,
                               int *prot, target_ulong address, int rw);
#endif

static inline CPUOpenRISCState *cpu_init(const char *cpu_model)
{
    OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
    if (cpu) {
        return &cpu->env;
    }
    return NULL;
}

#if defined(CONFIG_USER_ONLY)
static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
{
    if (newsp) {
        env->gpr[1] = newsp;
    }
    env->gpr[2] = 0;
}
#endif

#include "exec/cpu-all.h"

static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
                                        target_ulong *pc,
                                        target_ulong *cs_base, int *flags)
{
    *pc = env->pc;
    *cs_base = 0;
    /* D_FLAG -- branch instruction exception */
    *flags = (env->flags & D_FLAG);
}

static inline int cpu_mmu_index(CPUOpenRISCState *env)
{
    if (!(env->sr & SR_IME)) {
        return MMU_NOMMU_IDX;
    }
    return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
}

#define CPU_INTERRUPT_TIMER   CPU_INTERRUPT_TGT_INT_0
static inline bool cpu_has_work(CPUState *cpu)
{
    CPUOpenRISCState *env = &OPENRISC_CPU(cpu)->env;

    return env->interrupt_request & (CPU_INTERRUPT_HARD |
                                     CPU_INTERRUPT_TIMER);
}

#include "exec/exec-all.h"

static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
{
    return env->pc;
}

static inline void cpu_pc_from_tb(CPUOpenRISCState *env, TranslationBlock *tb)
{
    env->pc = tb->pc;
}

#endif /* CPU_OPENRISC_H */
Commit	Line	Data
e67db06e JL	1	/*
	2	* OpenRISC virtual CPU header.
	3	*
	4	* Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
	5	*
	6	* This library is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2 of the License, or (at your option) any later version.
	10	*
	11	* This library is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser General Public
	17	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#ifndef CPU_OPENRISC_H
	21	#define CPU_OPENRISC_H
	22
	23	#define TARGET_LONG_BITS 32
	24	#define ELF_MACHINE EM_OPENRISC
	25
	26	#define CPUArchState struct CPUOpenRISCState
	27
726fe045 JL	28	/* cpu_openrisc_map_address_* in CPUOpenRISCTLBContext need this decl. */
	29	struct OpenRISCCPU;
	30
e67db06e JL	31	#include "config.h"
e67db06e JL	32	#include "qemu-common.h"
022c62cb	33	#include "exec/cpu-defs.h"
6b4c305c	34	#include "fpu/softfloat.h"
14cccb61	35	#include "qom/cpu.h"
7b1b5d19	36	#include "qapi/error.h"
e67db06e JL	37
	38	#define TYPE_OPENRISC_CPU "or32-cpu"
	39
	40	#define OPENRISC_CPU_CLASS(klass) \
	41	OBJECT_CLASS_CHECK(OpenRISCCPUClass, (klass), TYPE_OPENRISC_CPU)
	42	#define OPENRISC_CPU(obj) \
	43	OBJECT_CHECK(OpenRISCCPU, (obj), TYPE_OPENRISC_CPU)
	44	#define OPENRISC_CPU_GET_CLASS(obj) \
	45	OBJECT_GET_CLASS(OpenRISCCPUClass, (obj), TYPE_OPENRISC_CPU)
	46
	47	/**
	48	* OpenRISCCPUClass:
	49	* @parent_reset: The parent class' reset handler.
	50	*
	51	* A OpenRISC CPU model.
	52	*/
	53	typedef struct OpenRISCCPUClass {
	54	/< private >/
	55	CPUClass parent_class;
	56	/< public >/
	57
	58	void (parent_reset)(CPUState cpu);
	59	} OpenRISCCPUClass;
	60
	61	#define NB_MMU_MODES 3
	62
726fe045 JL	63	enum {
	64	MMU_NOMMU_IDX = 0,
	65	MMU_SUPERVISOR_IDX = 1,
	66	MMU_USER_IDX = 2,
	67	};
	68
e67db06e JL	69	#define TARGET_PAGE_BITS 13
	70
	71	#define TARGET_PHYS_ADDR_SPACE_BITS 32
	72	#define TARGET_VIRT_ADDR_SPACE_BITS 32
	73
	74	#define SET_FP_CAUSE(reg, v) do {\
	75	(reg) = ((reg) & ~(0x3f << 12)) \| \
	76	((v & 0x3f) << 12);\
	77	} while (0)
	78	#define GET_FP_ENABLE(reg) (((reg) >> 7) & 0x1f)
	79	#define UPDATE_FP_FLAGS(reg, v) do {\
	80	(reg) \|= ((v & 0x1f) << 2);\
	81	} while (0)
	82
4dd044c6 JL	83	/* Version Register */
	84	#define SPR_VR 0xFFFF003F
	85
e67db06e JL	86	/* Internal flags, delay slot flag */
	87	#define D_FLAG 1
	88
b6a71ef7 JL	89	/* Interrupt */
	90	#define NR_IRQS 32
	91
e67db06e JL	92	/* Unit presece register */
	93	enum {
	94	UPR_UP = (1 << 0),
	95	UPR_DCP = (1 << 1),
	96	UPR_ICP = (1 << 2),
	97	UPR_DMP = (1 << 3),
	98	UPR_IMP = (1 << 4),
	99	UPR_MP = (1 << 5),
	100	UPR_DUP = (1 << 6),
	101	UPR_PCUR = (1 << 7),
	102	UPR_PMP = (1 << 8),
	103	UPR_PICP = (1 << 9),
	104	UPR_TTP = (1 << 10),
	105	UPR_CUP = (255 << 24),
	106	};
	107
	108	/* CPU configure register */
	109	enum {
	110	CPUCFGR_NSGF = (15 << 0),
	111	CPUCFGR_CGF = (1 << 4),
	112	CPUCFGR_OB32S = (1 << 5),
	113	CPUCFGR_OB64S = (1 << 6),
	114	CPUCFGR_OF32S = (1 << 7),
	115	CPUCFGR_OF64S = (1 << 8),
	116	CPUCFGR_OV64S = (1 << 9),
	117	};
	118
	119	/* DMMU configure register */
	120	enum {
	121	DMMUCFGR_NTW = (3 << 0),
	122	DMMUCFGR_NTS = (7 << 2),
	123	DMMUCFGR_NAE = (7 << 5),
	124	DMMUCFGR_CRI = (1 << 8),
	125	DMMUCFGR_PRI = (1 << 9),
	126	DMMUCFGR_TEIRI = (1 << 10),
	127	DMMUCFGR_HTR = (1 << 11),
	128	};
	129
	130	/* IMMU configure register */
	131	enum {
	132	IMMUCFGR_NTW = (3 << 0),
	133	IMMUCFGR_NTS = (7 << 2),
	134	IMMUCFGR_NAE = (7 << 5),
	135	IMMUCFGR_CRI = (1 << 8),
	136	IMMUCFGR_PRI = (1 << 9),
	137	IMMUCFGR_TEIRI = (1 << 10),
	138	IMMUCFGR_HTR = (1 << 11),
	139	};
	140
	141	/* Float point control status register */
	142	enum {
	143	FPCSR_FPEE = 1,
	144	FPCSR_RM = (3 << 1),
	145	FPCSR_OVF = (1 << 3),
	146	FPCSR_UNF = (1 << 4),
	147	FPCSR_SNF = (1 << 5),
	148	FPCSR_QNF = (1 << 6),
	149	FPCSR_ZF = (1 << 7),
	150	FPCSR_IXF = (1 << 8),
	151	FPCSR_IVF = (1 << 9),
	152	FPCSR_INF = (1 << 10),
	153	FPCSR_DZF = (1 << 11),
	154	};
	155
156	/* Exceptions indices */
157	enum {
158	EXCP_RESET = 0x1,
159	EXCP_BUSERR = 0x2,
160	EXCP_DPF = 0x3,
161	EXCP_IPF = 0x4,
162	EXCP_TICK = 0x5,
163	EXCP_ALIGN = 0x6,
164	EXCP_ILLEGAL = 0x7,
165	EXCP_INT = 0x8,
166	EXCP_DTLBMISS = 0x9,
167	EXCP_ITLBMISS = 0xa,
168	EXCP_RANGE = 0xb,
169	EXCP_SYSCALL = 0xc,
170	EXCP_FPE = 0xd,
171	EXCP_TRAP = 0xe,
172	EXCP_NR,
173	};
174
175	/* Supervisor register */
176	enum {
177	SR_SM = (1 << 0),
178	SR_TEE = (1 << 1),
179	SR_IEE = (1 << 2),
180	SR_DCE = (1 << 3),
181	SR_ICE = (1 << 4),
182	SR_DME = (1 << 5),
183	SR_IME = (1 << 6),
184	SR_LEE = (1 << 7),
185	SR_CE = (1 << 8),
186	SR_F = (1 << 9),
187	SR_CY = (1 << 10),
188	SR_OV = (1 << 11),
189	SR_OVE = (1 << 12),
190	SR_DSX = (1 << 13),
191	SR_EPH = (1 << 14),
192	SR_FO = (1 << 15),
193	SR_SUMRA = (1 << 16),
194	SR_SCE = (1 << 17),
195	};
196
197	/* OpenRISC Hardware Capabilities */
198	enum {
199	OPENRISC_FEATURE_NSGF = (15 << 0),
200	OPENRISC_FEATURE_CGF = (1 << 4),
201	OPENRISC_FEATURE_OB32S = (1 << 5),
202	OPENRISC_FEATURE_OB64S = (1 << 6),
203	OPENRISC_FEATURE_OF32S = (1 << 7),
204	OPENRISC_FEATURE_OF64S = (1 << 8),
205	OPENRISC_FEATURE_OV64S = (1 << 9),
206	};
207
99f575ed JL	208	/* Tick Timer Mode Register */
	209	enum {
	210	TTMR_TP = (0xfffffff),
	211	TTMR_IP = (1 << 28),
	212	TTMR_IE = (1 << 29),
	213	TTMR_M = (3 << 30),
	214	};
	215
	216	/* Timer Mode */
	217	enum {
	218	TIMER_NONE = (0 << 30),
	219	TIMER_INTR = (1 << 30),
	220	TIMER_SHOT = (2 << 30),
	221	TIMER_CONT = (3 << 30),
	222	};
	223
726fe045 JL	224	/* TLB size */
	225	enum {
	226	DTLB_WAYS = 1,
	227	DTLB_SIZE = 64,
	228	DTLB_MASK = (DTLB_SIZE-1),
	229	ITLB_WAYS = 1,
	230	ITLB_SIZE = 64,
	231	ITLB_MASK = (ITLB_SIZE-1),
	232	};
	233
	234	/* TLB prot */
	235	enum {
	236	URE = (1 << 6),
	237	UWE = (1 << 7),
	238	SRE = (1 << 8),
	239	SWE = (1 << 9),
	240
	241	SXE = (1 << 6),
	242	UXE = (1 << 7),
	243	};
	244
	245	/* check if tlb available */
	246	enum {
	247	TLBRET_INVALID = -3,
	248	TLBRET_NOMATCH = -2,
	249	TLBRET_BADADDR = -1,
	250	TLBRET_MATCH = 0
	251	};
	252
	253	typedef struct OpenRISCTLBEntry {
	254	uint32_t mr;
	255	uint32_t tr;
	256	} OpenRISCTLBEntry;
	257
	258	#ifndef CONFIG_USER_ONLY
	259	typedef struct CPUOpenRISCTLBContext {
	260	OpenRISCTLBEntry itlb[ITLB_WAYS][ITLB_SIZE];
	261	OpenRISCTLBEntry dtlb[DTLB_WAYS][DTLB_SIZE];
	262
	263	int (cpu_openrisc_map_address_code)(struct OpenRISCCPU cpu,
a8170e5e	264	hwaddr *physical,
726fe045 JL	265	int *prot,
	266	target_ulong address, int rw);
	267	int (cpu_openrisc_map_address_data)(struct OpenRISCCPU cpu,
a8170e5e	268	hwaddr *physical,
726fe045 JL	269	int *prot,
	270	target_ulong address, int rw);
	271	} CPUOpenRISCTLBContext;
	272	#endif
	273
e67db06e JL	274	typedef struct CPUOpenRISCState {
	275	target_ulong gpr[32]; /* General registers */
	276	target_ulong pc; /* Program counter */
	277	target_ulong npc; /* Next PC */
	278	target_ulong ppc; /* Prev PC */
	279	target_ulong jmp_pc; /* Jump PC */
	280
	281	target_ulong machi; /* Multiply register MACHI */
	282	target_ulong maclo; /* Multiply register MACLO */
	283
	284	target_ulong fpmaddhi; /* Multiply and add float register FPMADDHI */
	285	target_ulong fpmaddlo; /* Multiply and add float register FPMADDLO */
	286
	287	target_ulong epcr; /* Exception PC register */
	288	target_ulong eear; /* Exception EA register */
	289
	290	uint32_t sr; /* Supervisor register */
	291	uint32_t vr; /* Version register */
	292	uint32_t upr; /* Unit presence register */
	293	uint32_t cpucfgr; /* CPU configure register */
	294	uint32_t dmmucfgr; /* DMMU configure register */
	295	uint32_t immucfgr; /* IMMU configure register */
	296	uint32_t esr; /* Exception supervisor register */
	297	uint32_t fpcsr; /* Float register */
	298	float_status fp_status;
	299
	300	uint32_t flags; /* cpu_flags, we only use it for exception
	301	in solt so far. */
	302	uint32_t btaken; /* the SR_F bit */
	303
	304	CPU_COMMON
	305
	306	#ifndef CONFIG_USER_ONLY
726fe045 JL	307	CPUOpenRISCTLBContext * tlb;
726fe045 JL	308
e67db06e JL	309	struct QEMUTimer *timer;
	310	uint32_t ttmr; /* Timer tick mode register */
	311	uint32_t ttcr; /* Timer tick count register */
	312
	313	uint32_t picmr; /* Interrupt mask register */
	314	uint32_t picsr; /* Interrupt contrl register*/
	315	#endif
b6a71ef7	316	void irq[32]; / Interrupt irq input */
e67db06e JL	317	} CPUOpenRISCState;
	318
	319	/**
	320	* OpenRISCCPU:
	321	* @env: #CPUOpenRISCState
	322	*
	323	* A OpenRISC CPU.
	324	*/
	325	typedef struct OpenRISCCPU {
	326	/< private >/
	327	CPUState parent_obj;
	328	/< public >/
	329
	330	CPUOpenRISCState env;
	331
	332	uint32_t feature; /* CPU Capabilities */
	333	} OpenRISCCPU;
	334
	335	static inline OpenRISCCPU openrisc_env_get_cpu(CPUOpenRISCState env)
	336	{
	337	return OPENRISC_CPU(container_of(env, OpenRISCCPU, env));
	338	}
	339
	340	#define ENV_GET_CPU(e) CPU(openrisc_env_get_cpu(e))
	341
	342	OpenRISCCPU cpu_openrisc_init(const char cpu_model);
	343	void openrisc_cpu_realize(Object obj, Error *errp);
	344
	345	void cpu_openrisc_list(FILE *f, fprintf_function cpu_fprintf);
	346	int cpu_openrisc_exec(CPUOpenRISCState *s);
	347	void do_interrupt(CPUOpenRISCState *env);
	348	void openrisc_translate_init(void);
726fe045 JL	349	int cpu_openrisc_handle_mmu_fault(CPUOpenRISCState *env,
	350	target_ulong address,
	351	int rw, int mmu_idx);
d962783e	352	int cpu_openrisc_signal_handler(int host_signum, void pinfo, void puc);
e67db06e JL	353
	354	#define cpu_list cpu_openrisc_list
	355	#define cpu_exec cpu_openrisc_exec
	356	#define cpu_gen_code cpu_openrisc_gen_code
726fe045	357	#define cpu_handle_mmu_fault cpu_openrisc_handle_mmu_fault
d962783e	358	#define cpu_signal_handler cpu_openrisc_signal_handler
e67db06e JL	359
e67db06e JL	360	#ifndef CONFIG_USER_ONLY
dd29c7fb JL	361	/* hw/openrisc_pic.c */
	362	void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
	363
99f575ed JL	364	/* hw/openrisc_timer.c */
	365	void cpu_openrisc_clock_init(OpenRISCCPU *cpu);
	366	void cpu_openrisc_count_update(OpenRISCCPU *cpu);
	367	void cpu_openrisc_count_start(OpenRISCCPU *cpu);
	368	void cpu_openrisc_count_stop(OpenRISCCPU *cpu);
	369
e67db06e	370	void cpu_openrisc_mmu_init(OpenRISCCPU *cpu);
726fe045	371	int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
a8170e5e	372	hwaddr *physical,
726fe045 JL	373	int *prot, target_ulong address, int rw);
726fe045 JL	374	int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
a8170e5e	375	hwaddr *physical,
726fe045 JL	376	int *prot, target_ulong address, int rw);
726fe045 JL	377	int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
a8170e5e	378	hwaddr *physical,
726fe045	379	int *prot, target_ulong address, int rw);
e67db06e JL	380	#endif
	381
	382	static inline CPUOpenRISCState cpu_init(const char cpu_model)
	383	{
	384	OpenRISCCPU *cpu = cpu_openrisc_init(cpu_model);
	385	if (cpu) {
	386	return &cpu->env;
	387	}
	388	return NULL;
	389	}
	390
d962783e JL	391	#if defined(CONFIG_USER_ONLY)
	392	static inline void cpu_clone_regs(CPUOpenRISCState *env, target_ulong newsp)
	393	{
	394	if (newsp) {
	395	env->gpr[1] = newsp;
	396	}
	397	env->gpr[2] = 0;
	398	}
	399	#endif
	400
022c62cb	401	#include "exec/cpu-all.h"
e67db06e JL	402
	403	static inline void cpu_get_tb_cpu_state(CPUOpenRISCState *env,
	404	target_ulong *pc,
	405	target_ulong cs_base, int flags)
	406	{
	407	*pc = env->pc;
	408	*cs_base = 0;
	409	/* D_FLAG -- branch instruction exception */
	410	*flags = (env->flags & D_FLAG);
	411	}
	412
	413	static inline int cpu_mmu_index(CPUOpenRISCState *env)
	414	{
726fe045 JL	415	if (!(env->sr & SR_IME)) {
	416	return MMU_NOMMU_IDX;
	417	}
	418	return (env->sr & SR_SM) == 0 ? MMU_USER_IDX : MMU_SUPERVISOR_IDX;
e67db06e JL	419	}
e67db06e JL	420
b6a71ef7	421	#define CPU_INTERRUPT_TIMER CPU_INTERRUPT_TGT_INT_0
3993c6bd	422	static inline bool cpu_has_work(CPUState *cpu)
e67db06e	423	{
3993c6bd AF	424	CPUOpenRISCState *env = &OPENRISC_CPU(cpu)->env;
3993c6bd AF	425
b6a71ef7 JL	426	return env->interrupt_request & (CPU_INTERRUPT_HARD \|
b6a71ef7 JL	427	CPU_INTERRUPT_TIMER);
e67db06e JL	428	}
e67db06e JL	429
022c62cb	430	#include "exec/exec-all.h"
e67db06e JL	431
	432	static inline target_ulong cpu_get_pc(CPUOpenRISCState *env)
	433	{
	434	return env->pc;
	435	}
	436
	437	static inline void cpu_pc_from_tb(CPUOpenRISCState env, TranslationBlock tb)
	438	{
	439	env->pc = tb->pc;
	440	}
	441
	442	#endif /* CPU_OPENRISC_H */