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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
PciRomTable.c
Abstract:
Option Rom Support for PCI Bus Driver
Revision History
--*/
#include "pcibus.h"
#include "PciRomTable.h"
typedef struct {
EFI_HANDLE ImageHandle;
UINTN Seg;
UINT8 Bus;
UINT8 Dev;
UINT8 Func;
UINT64 RomAddress;
UINT64 RomLength;
} EFI_PCI_ROM_IMAGE_MAPPING;
static UINTN mNumberOfPciRomImages = 0;
static UINTN mMaxNumberOfPciRomImages = 0;
static EFI_PCI_ROM_IMAGE_MAPPING *mRomImageTable = NULL;
VOID
PciRomAddImageMapping (
IN EFI_HANDLE ImageHandle,
IN UINTN Seg,
IN UINT8 Bus,
IN UINT8 Dev,
IN UINT8 Func,
IN UINT64 RomAddress,
IN UINT64 RomLength
)
/*++
Routine Description:
TODO: Add function description
Arguments:
ImageHandle - TODO: add argument description
Seg - TODO: add argument description
Bus - TODO: add argument description
Dev - TODO: add argument description
Func - TODO: add argument description
RomAddress - TODO: add argument description
RomLength - TODO: add argument description
Returns:
TODO: add return values
--*/
{
EFI_PCI_ROM_IMAGE_MAPPING *TempMapping;
if (mNumberOfPciRomImages >= mMaxNumberOfPciRomImages) {
mMaxNumberOfPciRomImages += 0x20;
TempMapping = NULL;
TempMapping = AllocatePool (mMaxNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
if (TempMapping == NULL) {
return ;
}
CopyMem (TempMapping, mRomImageTable, mNumberOfPciRomImages * sizeof (EFI_PCI_ROM_IMAGE_MAPPING));
if (mRomImageTable != NULL) {
gBS->FreePool (mRomImageTable);
}
mRomImageTable = TempMapping;
}
mRomImageTable[mNumberOfPciRomImages].ImageHandle = ImageHandle;
mRomImageTable[mNumberOfPciRomImages].Seg = Seg;
mRomImageTable[mNumberOfPciRomImages].Bus = Bus;
mRomImageTable[mNumberOfPciRomImages].Dev = Dev;
mRomImageTable[mNumberOfPciRomImages].Func = Func;
mRomImageTable[mNumberOfPciRomImages].RomAddress = RomAddress;
mRomImageTable[mNumberOfPciRomImages].RomLength = RomLength;
mNumberOfPciRomImages++;
}
EFI_STATUS
PciRomGetRomResourceFromPciOptionRomTable (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
PCI_IO_DEVICE *PciIoDevice
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// TODO: This - add argument and description to function comment
// TODO: PciRootBridgeIo - add argument and description to function comment
// TODO: PciIoDevice - add argument and description to function comment
// TODO: EFI_NOT_FOUND - add return value to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
EFI_PCI_OPTION_ROM_TABLE *PciOptionRomTable;
EFI_PCI_OPTION_ROM_DESCRIPTOR *PciOptionRomDescriptor;
UINTN Index;
Status = EfiGetSystemConfigurationTable (&gEfiPciOptionRomTableGuid, (VOID **) &PciOptionRomTable);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
for (Index = 0; Index < PciOptionRomTable->PciOptionRomCount; Index++) {
PciOptionRomDescriptor = &PciOptionRomTable->PciOptionRomDescriptors[Index];
if (PciOptionRomDescriptor->Seg == PciRootBridgeIo->SegmentNumber &&
PciOptionRomDescriptor->Bus == PciIoDevice->BusNumber &&
PciOptionRomDescriptor->Dev == PciIoDevice->DeviceNumber &&
PciOptionRomDescriptor->Func == PciIoDevice->FunctionNumber ) {
PciIoDevice->PciIo.RomImage = (VOID *) (UINTN) PciOptionRomDescriptor->RomAddress;
PciIoDevice->PciIo.RomSize = (UINTN) PciOptionRomDescriptor->RomLength;
}
}
for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle);
}
}
return EFI_SUCCESS;
}
EFI_STATUS
PciRomGetImageMapping (
PCI_IO_DEVICE *PciIoDevice
)
/*++
Routine Description:
Arguments:
Returns:
--*/
// TODO: PciIoDevice - add argument and description to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
UINTN Index;
PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;
for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
if (mRomImageTable[Index].ImageHandle != NULL) {
AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle);
} else {
PciIoDevice->PciIo.RomImage = (VOID *) (UINTN) mRomImageTable[Index].RomAddress;
PciIoDevice->PciIo.RomSize = (UINTN) mRomImageTable[Index].RomLength;
}
}
}
return EFI_SUCCESS;
}
|
