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
|
/* -------------------------------------------
Copyright (C) 2024-2025, Amlal EL Mahrouss, all rights reserved.
------------------------------------------- */
#pragma once
#include <NewKit/Defines.h>
namespace Kernel::PCI
{
enum class PciConfigKind : UShort
{
ConfigAddress = 0xCF8,
ConfigData = 0xCFC,
CommandReg = 0x0004,
Invalid = 0xFFFF,
};
class Device final
{
public:
Device() = default;
public:
explicit Device(UShort bus, UShort device, UShort function, UInt32 bar);
Device& operator=(const Device&) = default;
Device(const Device&) = default;
~Device();
public:
UInt Read(UInt bar, Size szData);
void Write(UInt bar, UIntPtr data, Size szData);
public:
operator bool();
public:
template <typename T>
UInt Read(UInt bar)
{
static_assert(sizeof(T) <= 4, "64-bit PCI addressing is unsupported");
return Read(bar, sizeof(T));
}
template <typename T>
void Write(UInt bar, UIntPtr data)
{
static_assert(sizeof(T) <= 4, "64-bit PCI addressing is unsupported");
Write(bar, data, sizeof(T));
}
public:
UShort DeviceId();
UShort VendorId();
UShort InterfaceId();
UChar Class();
UChar Subclass();
UChar ProgIf();
UChar HeaderType();
UIntPtr Bar(UInt32 bar_in);
public:
void EnableMmio(UInt32 bar_in);
void BecomeBusMaster(UInt32 bar_in); // for PCI-DMA, PC-DMA does not need that.
UShort Vendor();
private:
UShort fBus;
UShort fDevice;
UShort fFunction;
UInt32 fBar;
};
} // namespace Kernel::PCI
EXTERN_C void NewOSPCISetCfgTarget(Kernel::UInt bar);
EXTERN_C Kernel::UInt NewOSPCIReadRaw(Kernel::UInt bar);
|
