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
96
97
|
// Copyright 2024-2025, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/nekernel-org/nekernel
#ifndef __MODULE_NVME_H__
#define __MODULE_NVME_H__
#include <NeKit/Config.h>
/// @file NVME.h
/// @brief Non Volatile Memory.
#define NE_ALIGN_NVME ATTRIBUTE(aligned(sizeof(Kernel::UInt32)))
namespace Kernel {
struct NE_ALIGN_NVME HAL_NVME_BAR_0 final {
UInt32 fCapabilities;
UInt32 fVersion;
UInt32 fIntMaskSet;
UInt32 fIntMaskClr;
UInt32 fContrlConf;
UInt32 fContrlStat;
UInt32 fAdminQueueAttr;
UInt32 fAdminSubmissionQueue;
UInt32 fAdminCompletionQueue;
};
struct NE_ALIGN_NVME HAL_NVME_QUEUE final {
UInt32 fOpcode;
UInt32 fNSID;
UInt32 fReserved[3];
UInt32 fMetadataPtr[5];
UInt32 fDataPtr[9];
UInt32 CommandSpecific[15];
};
enum {
kInvalidNVME = 0xFF,
kCreateCompletionQueueNVME = 0x05,
kCreateSubmissionQueueNVME = 0x01,
kIdentifyNVME = 0x06,
kReadNVME = 0x02,
kWriteNVME = 0x01,
kCountNVME = 5,
};
/// @brief Creates an admin command for a DMA operation.
template <Int32 Opcode>
inline Bool nvme_create_admin_command(HAL_NVME_QUEUE* entry, UInt32 nsid, UInt32 prpTransfer[3],
UInt32 startingLba[2], UInt32 lowTransferBlocks) {
if (entry == nullptr) return false;
entry->CommandSpecific[9] = startingLba[0];
entry->CommandSpecific[10] = startingLba[1];
entry->CommandSpecific[11] = lowTransferBlocks;
entry->CommandSpecific[5] = prpTransfer[0];
entry->CommandSpecific[6] = prpTransfer[1];
entry->CommandSpecific[7] = prpTransfer[2];
entry->CommandSpecific[0] = nsid;
return true;
}
/// @brief Creates an I/O command for a DMA operation.
template <Int32 Opcode>
inline Bool nvme_create_io_command(HAL_NVME_QUEUE* entry, UInt64 baseAddress,
UInt32 identLoAndQueueSizeHi, UInt32 flagsLoAndQueueComplIdHi,
UInt32 identify, Bool provideIdentify = false,
Bool namespaceIdentify = false) {
if (entry == nullptr) return false;
if (baseAddress == 0) return false;
entry->fOpcode = Opcode;
entry->CommandSpecific[5] = (baseAddress & 0xFF);
entry->CommandSpecific[6] = static_cast<UInt32>(baseAddress);
if (!provideIdentify) {
entry->CommandSpecific[9] = identLoAndQueueSizeHi;
entry->CommandSpecific[10] = flagsLoAndQueueComplIdHi;
} else {
entry->CommandSpecific[9] = identify;
if (namespaceIdentify) {
entry->CommandSpecific[0] = YES;
}
}
return true;
}
} // namespace Kernel
#endif // ifndef __MODULE_NVME_H__
|
