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* ********************************************************* */




#ifndef DSPMMU_H
#define DSPMMU_H

// MMU Control Register Addresses
#define PREFETCH_REG 	*((volatile unsigned short *) 0xFFFED200) // Prefetch register
#define WALKING_ST_REG	*((volatile unsigned short *) 0xFFFED204) // Prefetch status register
#define CNTL_REG		*((volatile unsigned short *) 0xFFFED208) // Control register	
#define FAULT_AD_H_REG	*((volatile unsigned short *) 0xFFFED20C) // Fault address register MSB
#define FAULT_AD_L_REG	*((volatile unsigned short *) 0xFFFED210) // Fault address register LSB	
#define F_ST_REG		*((volatile unsigned short *) 0xFFFED214) // Fault status register	
#define IT_ACK_REG		*((volatile unsigned short *) 0xFFFED218) // shorterrupt acknowledge register	
#define TTB_H_REG		*((volatile unsigned short *) 0xFFFED21C) // TTB register MSB	
#define TTB_L_REG		*((volatile unsigned short *) 0xFFFED220) // TTB register LSB	
#define LOCK_REG		*((volatile unsigned short *) 0xFFFED224) // Lock counter	
#define LD_TLB_REG		*((volatile unsigned short *) 0xFFFED228) // Load entry in TLB	
#define CAM_H_REG		*((volatile unsigned short *) 0xFFFED22C) // CAM entry register MSB	
#define CAM_L_REG		*((volatile unsigned short *) 0xFFFED230) // CAM entry register LSB	
#define RAM_H_REG		*((volatile unsigned short *) 0xFFFED234) // RAM entry register MSB	
#define RAM_L_REG		*((volatile unsigned short *) 0xFFFED238) // RAM entry register LSB	
#define GFLUSH_REG		*((volatile unsigned short *) 0xFFFED23C) // Global flush register	
#define FLUSH_ENTRY_REG	*((volatile unsigned short *) 0xFFFED240) // Individual flush register	
#define READ_CAM_H_REG	*((volatile unsigned short *) 0xFFFED244) // Read CAM register MSB
#define READ_CAM_L_REG	*((volatile unsigned short *) 0xFFFED248) // Read CAM register LSB
#define READ_RAM_H_REG	*((volatile unsigned short *) 0xFFFED24C) // Read RAM	register MSB
#define READ_RAM_L_REG	*((volatile unsigned short *) 0xFFFED250) // Read RAM	register LSB


// Parameters

// First-level Translation Table Entry Types
#define COARSE_TABLE		0x1
#define SECTION 			0x2
#define FINE_TABLE			0x3


// Second-level Translation Table Entry Types
#define LARGE_PAGE			0x1
#define SMAL_PAGE 			0x2
#define TINY_PAGE			0x3

// Section Access Permissions (Bits 11 and 10 of First-level Section Entry)
#define SECTION_NO_ACCESS	0x000
#define SECTION_READ_ONLY	0x800
#define SECTION_READ_WRITE	0xC00

// Page Access Permissions (Bits 5 and 4 of Second-level Page Table Entry)
#define PAGE_NO_ACCESS		0x00
#define PAGE_READ_ONLY		0x20
#define PAGE_READ_WRITE		0x30


// MMU Control
#define RESET		0x0
#define REL_RESET	0x1
#define	ENABLE		0x2
#define DISABLE		0xFFFD
#define	USE_TABLE	0x4

// Interrupt Acknowledge
#define ACKNOWLEDGE 0x1



#endif