blob: 4bc112c9e2a14de91d7c164ebc6b9ab50b4c238f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
#pragma once
#include "device_conf.h"
#include <linux/build_bug.h>
#define SET_MASK(SETS) (((((uintptr_t) SETS) * CACHELINE_SIZE) - 1) ^ (CACHELINE_SIZE - 1))
#define REMOVE_PAGE_OFFSET(ptr) ((void *) (((uintptr_t) ptr) & PAGE_MASK))
#define GET_BIT(b, i) (((b & (1 << i)) >> i) & 1)
#define SET_BIT(b, i) (b | (1 << i))
/* Operate cacheline flags
* Used flags:
* 32 2 1 0
* | | ... | cache group initialized | last | first |
*/
#define DEFAULT_FLAGS 0
#define SET_FIRST(flags) SET_BIT(flags, 0)
#define SET_LAST(flags) SET_BIT(flags, 1)
#define SET_CACHE_GROUP_INIT(flags) SET_BIT(flags, 2)
#define IS_FIRST(flags) GET_BIT(flags, 0)
#define IS_LAST(flags) GET_BIT(flags, 1)
#define IS_CACHE_GROUP_INIT(flags) GET_BIT(flags, 2)
// Offset of the next and prev field in the cacheline struct
#define CL_NEXT_OFFSET 0
#define CL_PREV_OFFSET 8
typedef enum cache_level cache_level;
typedef enum addressing_type addressing_type;
typedef struct cacheline cacheline;
typedef struct cache_ctx cache_ctx;
enum cache_level {L1, L2};
enum addressing_type {VIRTUAL, PHYSICAL};
struct cache_ctx {
cache_level cache_level;
addressing_type addressing;
uint32_t sets;
uint32_t associativity;
uint32_t access_time;
uint32_t nr_of_cachelines;
uint32_t set_size;
uint32_t cache_size;
};
struct cacheline {
// Doubly linked list inside same set
// Attention: CL_NEXT_OFFSET and CL_PREV_OFFSET
// must be kept up to date
cacheline *next;
cacheline *prev;
uint16_t cache_set;
uint16_t flags;
// Unused padding to fill cache line
uint64_t count;
char padding[32];
};
static_assert(sizeof(struct cacheline) == CACHELINE_SIZE, "Bad cache line struct size");
|
