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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(C) 2019 Marvell International Ltd.
*/
#ifndef _OTX2_IO_ARM64_H_
#define _OTX2_IO_ARM64_H_
#define otx2_load_pair(val0, val1, addr) ({ \
asm volatile( \
"ldp %x[x0], %x[x1], [%x[p1]]" \
:[x0]"=r"(val0), [x1]"=r"(val1) \
:[p1]"r"(addr) \
); })
#define otx2_store_pair(val0, val1, addr) ({ \
asm volatile( \
"stp %x[x0], %x[x1], [%x[p1],#0]!" \
::[x0]"r"(val0), [x1]"r"(val1), [p1]"r"(addr) \
); })
#define otx2_prefetch_store_keep(ptr) ({\
asm volatile("prfm pstl1keep, [%x0]\n" : : "r" (ptr)); })
static __rte_always_inline uint64_t
otx2_atomic64_add_nosync(int64_t incr, int64_t *ptr)
{
uint64_t result;
/* Atomic add with no ordering */
asm volatile (
".cpu generic+lse\n"
"ldadd %x[i], %x[r], [%[b]]"
: [r] "=r" (result), "+m" (*ptr)
: [i] "r" (incr), [b] "r" (ptr)
: "memory");
return result;
}
static __rte_always_inline uint64_t
otx2_atomic64_add_sync(int64_t incr, int64_t *ptr)
{
uint64_t result;
/* Atomic add with ordering */
asm volatile (
".cpu generic+lse\n"
"ldadda %x[i], %x[r], [%[b]]"
: [r] "=r" (result), "+m" (*ptr)
: [i] "r" (incr), [b] "r" (ptr)
: "memory");
return result;
}
static __rte_always_inline uint64_t
otx2_lmt_submit(rte_iova_t io_address)
{
uint64_t result;
asm volatile (
".cpu generic+lse\n"
"ldeor xzr,%x[rf],[%[rs]]" :
[rf] "=r"(result): [rs] "r"(io_address));
return result;
}
static __rte_always_inline void
otx2_lmt_mov(void *out, const void *in, const uint32_t lmtext)
{
volatile const __uint128_t *src128 = (const __uint128_t *)in;
volatile __uint128_t *dst128 = (__uint128_t *)out;
dst128[0] = src128[0];
dst128[1] = src128[1];
/* lmtext receives following value:
* 1: NIX_SUBDC_EXT needed i.e. tx vlan case
* 2: NIX_SUBDC_EXT + NIX_SUBDC_MEM i.e. tstamp case
*/
if (lmtext) {
dst128[2] = src128[2];
if (lmtext > 1)
dst128[3] = src128[3];
}
}
static __rte_always_inline void
otx2_lmt_mov_seg(void *out, const void *in, const uint16_t segdw)
{
volatile const __uint128_t *src128 = (const __uint128_t *)in;
volatile __uint128_t *dst128 = (__uint128_t *)out;
uint8_t i;
for (i = 0; i < segdw; i++)
dst128[i] = src128[i];
}
#endif /* _OTX2_IO_ARM64_H_ */
|
