drv_pmp.h

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#ifndef PMP_H
#define PMP_H
 
#include <stdint.h>
#include <stdbool.h>
#include "errcode.h"
 
#define PMPXCFG_NUM_PER_REG                     4
#define MEMXATTR_NUM_PER_REG                    8
#define PMPADDR_RIGHT_SHIFT_BIS                 2
 
 
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */
 
typedef enum pmp_attr {
    PMP_ATTR_DEVICE_NO_BUFFERABLE = 0,
    PMP_ATTR_DEVICE_BUFFERABLE = 1,
    PMP_ATTR_NO_BUFFERABLE_AND_NO_CACHEABLE = 2,
    PMP_ATTR_NO_CACHEABLE_AND_BUFFERABLE = 3,
    PMP_ATTR_WRITETHROUGH_NO_ALLOCATE = 4,
    PMP_ATTR_WRITETHROUGH_RALLOCATE = 6,
    PMP_ATTR_WRITEBACK_RALLOCATE = 7,
    PMP_ATTR_WRITEBACK_NO_ALLOCATE = 8,
    PMP_ATTR_WRITETHROUGH_RWALLOCATE = 14,
    PMP_ATTR_WRITEBACK_RWALLOCATE = 15
} pmp_attr_t;
 
typedef enum addr_match {
    PMPCFG_ADDR_MATCH_OFF = 0x0,
    PMPCFG_ADDR_MATCH_TOR = 0x1,
    PMPCFG_ADDR_MATCH_NA4 = 0x2,
    PMPCFG_ADDR_MATCH_NAPOT = 0x3
} addr_match_t;
 
typedef enum rwx_permission {
    PMPCFG_NO_ACCESS = 0x0,
    PMPCFG_READ_ONLY_NEXECUTE = 0x1,
    PMPCFG_RW_NEXECUTE = 0x3,
    PMPCFG_READ_ONLY_EXECUTE = 0x5,
    PMPCFG_RW_EXECUTE = 0x7
} rwx_permission_t;
 
typedef struct pmpx_config {
    rwx_permission_t rwx_permission;  
    addr_match_t addr_match;          
    bool lock;                        
    pmp_attr_t pmp_attr;              
} pmpx_config_t;
 
typedef struct pmp_conf {
    uint32_t idx;                    
    uint32_t addr;                   
    uint32_t size;                   
    pmpx_config_t conf;              
} pmp_conf_t;
 
errcode_t uapi_pmp_config(const pmp_conf_t *config, uint32_t length);
 
#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */
 
#endif