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/*
* Cisco router simulation platform.
* Copyright (c) 2005,2006 Christophe Fillot (cf@utc.fr)
*/
#ifndef __MEMORY_H__
#define __MEMORY_H__
#include <sys/types.h>
#include "utils.h"
/* MTS operation */
#define MTS_READ 0
#define MTS_WRITE 1
/* 0.5GB value */
#define MTS_SIZE_512M 0x20000000
/* MTS flag bits: D (device), ACC (memory access), C (chain) */
#define MTS_FLAG_BITS 4
#define MTS_FLAG_MASK 0x0000000fUL
/* Masks for MTS entries */
#define MTS_CHAIN_MASK 0x00000001
#define MTS_ACC_MASK 0x00000006
#define MTS_DEV_MASK 0x00000008
#define MTS_ADDR_MASK (~MTS_FLAG_MASK)
/* Device ID mask and shift, device offset mask */
#define MTS_DEVID_MASK 0xfc000000
#define MTS_DEVID_SHIFT 26
#define MTS_DEVOFF_MASK 0x03ffffff
/* Memory access flags */
#define MTS_ACC_AE 0x00000002 /* Address Error */
#define MTS_ACC_T 0x00000004 /* TLB Exception */
#define MTS_ACC_U 0x00000006 /* Unexistent */
/* Macro for easy hash computing */
#define MTS_SHR(v,sr) ((v) >> (sr))
/* Hash table size for MTS64 (default: [shift:16,bits:12]) */
#define MTS64_HASH_SHIFT1 12
#define MTS64_HASH_SHIFT2 20
#define MTS64_HASH_BITS 8
#define MTS64_HASH_SIZE (1 << MTS64_HASH_BITS)
#define MTS64_HASH_MASK (MTS64_HASH_SIZE - 1)
/* MTS64 hash on virtual addresses */
#define MTS64_SHR(v,i) (MTS_SHR((v),MTS64_HASH_SHIFT##i))
#define MTS64_HASH(vaddr) ((MTS64_SHR(vaddr,1) ^ MTS64_SHR(vaddr,2)) & MTS64_HASH_MASK)
/* Hash table size for MTS32 (default: [shift:15,bits:15]) */
#define MTS32_HASH_SHIFT1 12
#define MTS32_HASH_SHIFT2 20
#define MTS32_HASH_BITS 8
#define MTS32_HASH_SIZE (1 << MTS32_HASH_BITS)
#define MTS32_HASH_MASK (MTS32_HASH_SIZE - 1)
/* MTS32 hash on virtual addresses */
#define MTS32_SHR(v,i) (MTS_SHR((v),MTS32_HASH_SHIFT##i))
#define MTS32_HASH(vaddr) ((MTS32_SHR(vaddr,1) ^ MTS32_SHR(vaddr,2)) & MTS32_HASH_MASK)
/* Number of entries per chunk */
#define MTS64_CHUNK_SIZE 256
#define MTS32_CHUNK_SIZE 256
/* MTS64: chunk definition */
struct mts64_chunk {
mts64_entry_t entry[MTS64_CHUNK_SIZE];
struct mts64_chunk *next;
u_int count;
};
/* MTS32: chunk definition */
struct mts32_chunk {
mts32_entry_t entry[MTS32_CHUNK_SIZE];
struct mts32_chunk *next;
u_int count;
};
/* Record a memory access */
void memlog_rec_access(cpu_gen_t *cpu,m_uint64_t vaddr,m_uint64_t data,
m_uint32_t op_size,m_uint32_t op_type);
/* Show the last memory accesses */
void memlog_dump(cpu_gen_t *cpu);
/* Update the data obtained by a read access */
void memlog_update_read(cpu_gen_t *cpu,m_iptr_t raddr);
/* Copy a memory block from VM physical RAM to real host */
void physmem_copy_from_vm(vm_instance_t *vm,void *real_buffer,
m_uint64_t paddr,size_t len);
/* Copy a memory block to VM physical RAM from real host */
void physmem_copy_to_vm(vm_instance_t *vm,void *real_buffer,
m_uint64_t paddr,size_t len);
/* Copy a 32-bit word from the VM physical RAM to real host */
m_uint32_t physmem_copy_u32_from_vm(vm_instance_t *vm,m_uint64_t paddr);
/* Copy a 32-bit word to the VM physical RAM from real host */
void physmem_copy_u32_to_vm(vm_instance_t *vm,m_uint64_t paddr,m_uint32_t val);
/* Copy a 16-bit word from the VM physical RAM to real host */
m_uint16_t physmem_copy_u16_from_vm(vm_instance_t *vm,m_uint64_t paddr);
/* Copy a 16-bit word to the VM physical RAM from real host */
void physmem_copy_u16_to_vm(vm_instance_t *vm,m_uint64_t paddr,m_uint16_t val);
/* Copy a byte from the VM physical RAM to real host */
m_uint8_t physmem_copy_u8_from_vm(vm_instance_t *vm,m_uint64_t paddr);
/* Copy a 16-bit word to the VM physical RAM from real host */
void physmem_copy_u8_to_vm(vm_instance_t *vm,m_uint64_t paddr,m_uint8_t val);
/* DMA transfer operation */
void physmem_dma_transfer(vm_instance_t *vm,m_uint64_t src,m_uint64_t dst,
size_t len);
/* strlen in VM physical memory */
size_t physmem_strlen(vm_instance_t *vm,m_uint64_t paddr);
/* find sequence of bytes in VM cacheable physical memory interval [first,last] */
int physmem_cfind(vm_instance_t *vm,m_uint8_t *bytes,size_t len,
m_uint64_t first,m_uint64_t last, m_uint64_t *paddr);
/* Physical memory dump (32-bit words) */
void physmem_dump_vm(vm_instance_t *vm,m_uint64_t paddr,m_uint32_t u32_count);
#endif
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