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1 | /*++ |
1 | /*++ |
2 | 2 | ||
3 | Copyright (c) 1998 Intel Corporation |
3 | Copyright (c) 1998 Intel Corporation |
4 | 4 | ||
5 | Module Name: |
5 | Module Name: |
6 | 6 | ||
7 | hw.c |
7 | hw.c |
8 | 8 | ||
9 | Abstract: |
9 | Abstract: |
10 | 10 | ||
11 | Debug library functions for Hardware IO access |
11 | Debug library functions for Hardware IO access |
12 | 12 | ||
13 | 13 | ||
14 | 14 | ||
15 | Revision History |
15 | Revision History |
16 | 16 | ||
17 | --*/ |
17 | --*/ |
18 | 18 | ||
19 | #include "lib.h" |
19 | #include "lib.h" |
20 | 20 | ||
21 | 21 | ||
22 | EFI_STATUS |
22 | EFI_STATUS |
23 | InitializeGlobalIoDevice ( |
23 | InitializeGlobalIoDevice ( |
24 | IN EFI_DEVICE_PATH *DevicePath, |
24 | IN EFI_DEVICE_PATH *DevicePath, |
25 | IN EFI_GUID *Protocol, |
25 | IN EFI_GUID *Protocol, |
26 | IN CHAR8 *ErrorStr, |
26 | IN CHAR8 *ErrorStr, |
27 | OUT EFI_DEVICE_IO_INTERFACE **GlobalIoFncs |
27 | OUT EFI_DEVICE_IO_INTERFACE **GlobalIoFncs |
28 | ) |
28 | ) |
29 | /*++ |
29 | /*++ |
30 | 30 | ||
31 | Routine Description: |
31 | Routine Description: |
32 | 32 | ||
33 | Check to see if DevicePath exists for a given Protocol. Return Error if it |
33 | Check to see if DevicePath exists for a given Protocol. Return Error if it |
34 | exists. Return GlobalIoFuncs set match the DevicePath |
34 | exists. Return GlobalIoFuncs set match the DevicePath |
35 | 35 | ||
36 | Arguments: |
36 | Arguments: |
37 | 37 | ||
38 | DevicePath - to operate on |
38 | DevicePath - to operate on |
39 | Protocol - to check the DevicePath against |
39 | Protocol - to check the DevicePath against |
40 | ErrorStr - ASCII string to display on error |
40 | ErrorStr - ASCII string to display on error |
41 | GlobalIoFncs - Returned with DeviceIoProtocol for the DevicePath |
41 | GlobalIoFncs - Returned with DeviceIoProtocol for the DevicePath |
42 | 42 | ||
43 | Returns: |
43 | Returns: |
44 | 44 | ||
45 | Pass or Fail based on wether GlobalIoFncs where found |
45 | Pass or Fail based on wether GlobalIoFncs where found |
46 | 46 | ||
47 | --*/ |
47 | --*/ |
48 | { |
48 | { |
49 | EFI_STATUS Status; |
49 | EFI_STATUS Status; |
50 | EFI_HANDLE Handle; |
50 | EFI_HANDLE Handle; |
51 | 51 | ||
52 | // |
52 | // |
53 | // Check to see if this device path already has Protocol on it. |
53 | // Check to see if this device path already has Protocol on it. |
54 | // if so we are loading recursivly and should exit with an error |
54 | // if so we are loading recursivly and should exit with an error |
55 | // |
55 | // |
56 | Status = BS->LocateDevicePath (Protocol, &DevicePath, &Handle); |
56 | Status = BS->LocateDevicePath (Protocol, &DevicePath, &Handle); |
57 | if (!EFI_ERROR(Status)) { |
57 | if (!EFI_ERROR(Status)) { |
58 | DEBUG ((D_INIT, "Device Already Loaded for %a device\n", ErrorStr)); |
58 | DEBUG ((D_INIT, "Device Already Loaded for %a device\n", ErrorStr)); |
59 | return EFI_LOAD_ERROR; |
59 | return EFI_LOAD_ERROR; |
60 | } |
60 | } |
61 | 61 | ||
62 | Status = BS->LocateDevicePath (&DeviceIoProtocol, &DevicePath, &Handle); |
62 | Status = BS->LocateDevicePath (&DeviceIoProtocol, &DevicePath, &Handle); |
63 | if (!EFI_ERROR(Status)) { |
63 | if (!EFI_ERROR(Status)) { |
64 | Status = BS->HandleProtocol (Handle, &DeviceIoProtocol, (VOID*)GlobalIoFncs); |
64 | Status = BS->HandleProtocol (Handle, &DeviceIoProtocol, (VOID*)GlobalIoFncs); |
65 | } |
65 | } |
66 | 66 | ||
67 | ASSERT (!EFI_ERROR(Status)); |
67 | ASSERT (!EFI_ERROR(Status)); |
68 | return Status; |
68 | return Status; |
69 | } |
69 | } |
70 | 70 | ||
71 | UINT32 |
71 | UINT32 |
72 | ReadPort ( |
72 | ReadPort ( |
73 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
73 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
74 | IN EFI_IO_WIDTH Width, |
74 | IN EFI_IO_WIDTH Width, |
75 | IN UINTN Port |
75 | IN UINTN Port |
76 | ) |
76 | ) |
77 | { |
77 | { |
78 | UINT32 Data; |
78 | UINT32 Data; |
79 | EFI_STATUS Status; |
79 | EFI_STATUS Status; |
80 | 80 | ||
81 | Status = GlobalIoFncs->Io.Read (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
81 | Status = GlobalIoFncs->Io.Read (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
82 | ASSERT(!EFI_ERROR(Status)); |
82 | ASSERT(!EFI_ERROR(Status)); |
83 | return Data; |
83 | return Data; |
84 | } |
84 | } |
85 | 85 | ||
86 | UINT32 |
86 | UINT32 |
87 | WritePort ( |
87 | WritePort ( |
88 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
88 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
89 | IN EFI_IO_WIDTH Width, |
89 | IN EFI_IO_WIDTH Width, |
90 | IN UINTN Port, |
90 | IN UINTN Port, |
91 | IN UINTN Data |
91 | IN UINTN Data |
92 | ) |
92 | ) |
93 | { |
93 | { |
94 | EFI_STATUS Status; |
94 | EFI_STATUS Status; |
95 | 95 | ||
96 | Status = GlobalIoFncs->Io.Write (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
96 | Status = GlobalIoFncs->Io.Write (GlobalIoFncs, Width, (UINT64)Port, 1, &Data); |
97 | ASSERT(!EFI_ERROR(Status)); |
97 | ASSERT(!EFI_ERROR(Status)); |
98 | return (UINT32)Data; |
98 | return (UINT32)Data; |
99 | } |
99 | } |
100 | 100 | ||
101 | UINT32 |
101 | UINT32 |
102 | ReadPciConfig ( |
102 | ReadPciConfig ( |
103 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
103 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
104 | IN EFI_IO_WIDTH Width, |
104 | IN EFI_IO_WIDTH Width, |
105 | IN UINTN Address |
105 | IN UINTN Address |
106 | ) |
106 | ) |
107 | { |
107 | { |
108 | UINT32 Data; |
108 | UINT32 Data; |
109 | EFI_STATUS Status; |
109 | EFI_STATUS Status; |
110 | 110 | ||
111 | Status = GlobalIoFncs->Pci.Read (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
111 | Status = GlobalIoFncs->Pci.Read (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
112 | ASSERT(!EFI_ERROR(Status)); |
112 | ASSERT(!EFI_ERROR(Status)); |
113 | return Data; |
113 | return Data; |
114 | } |
114 | } |
115 | 115 | ||
116 | UINT32 |
116 | UINT32 |
117 | WritePciConfig ( |
117 | WritePciConfig ( |
118 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
118 | IN EFI_DEVICE_IO_INTERFACE *GlobalIoFncs, |
119 | IN EFI_IO_WIDTH Width, |
119 | IN EFI_IO_WIDTH Width, |
120 | IN UINTN Address, |
120 | IN UINTN Address, |
121 | IN UINTN Data |
121 | IN UINTN Data |
122 | ) |
122 | ) |
123 | { |
123 | { |
124 | EFI_STATUS Status; |
124 | EFI_STATUS Status; |
125 | 125 | ||
126 | Status = GlobalIoFncs->Pci.Write (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
126 | Status = GlobalIoFncs->Pci.Write (GlobalIoFncs, Width, (UINT64)Address, 1, &Data); |
127 | ASSERT(!EFI_ERROR(Status)); |
127 | ASSERT(!EFI_ERROR(Status)); |
128 | return (UINT32)Data; |
128 | return (UINT32)Data; |
129 | } |
129 | } |
130 | 130 | ||
131 | 131 | ||
132 | 132 | ||
133 | 133 |