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1 | /** @file\r |
2 | This file declares Smbus PPI.\r |
3 | \r |
4 | Copyright (c) 2007, Intel Corporation\r |
5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r |
8 | http://opensource.org/licenses/bsd-license.php\r |
9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
12 | \r |
13 | Module Name: Smbus.h\r |
14 | \r |
15 | @par Revision Reference:\r |
16 | This PPI is defined in Framework of EFI SmBus PPI spec.\r |
17 | Version 0.9\r |
18 | \r |
19 | **/\r |
20 | \r |
21 | #ifndef _PEI_SMBUS_PPI_H\r |
22 | #define _PEI_SMBUS_PPI_H\r |
23 | \r |
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24 | #include <PiPei.h>\r |
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25 | #include <IndustryStandard/SmBus.h>\r |
26 | \r |
27 | #define EFI_PEI_SMBUS_PPI_GUID \\r |
28 | { \\r |
29 | 0xabd42895, 0x78cf, 0x4872, {0x84, 0x44, 0x1b, 0x5c, 0x18, 0xb, 0xfb, 0xda } \\r |
30 | }\r |
31 | \r |
32 | typedef struct _EFI_PEI_SMBUS_PPI EFI_PEI_SMBUS_PPI;\r |
33 | \r |
34 | /**\r |
35 | Executes an SMBus operation to an SMBus controller.\r |
36 | \r |
37 | @param PeiServices A pointer to the system PEI Services Table.\r |
38 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r |
39 | @param SlaveAddress The SMBUS hardware address to which the SMBUS\r |
40 | device is preassigned or allocated.\r |
41 | @param Command This command is transmitted by the SMBus host\r |
42 | controller to the SMBus slave device and the interpretation is\r |
43 | SMBus slave device specific.\r |
44 | @param Operation Signifies which particular SMBus hardware protocol\r |
45 | instance that it will use to execute the SMBus transactions.\r |
46 | @param PecCheck Defines if Packet Error Code (PEC) checking is required\r |
47 | for this operation.\r |
48 | @param Length Signifies the number of bytes that this operation will do.\r |
49 | @param Buffer Contains the value of data to execute to the SMBus slave device.\r |
50 | \r |
51 | @retval EFI_SUCCESS The last data that was returned from the access\r |
52 | matched the poll exit criteria.\r |
53 | @retval EFI_CRC_ERROR The checksum is not correct (PEC is incorrect)\r |
54 | @retval EFI_TIMEOUT Timeout expired before the operation was completed.\r |
55 | Timeout is determined by the SMBus host controller device.\r |
56 | @retval EFI_OUT_OF_RESOURCES The request could not be completed\r |
57 | due to a lack of resources.\r |
58 | @retval EFI_DEVICE_ERROR The request was not completed because\r |
59 | a failure reflected in the Host Status Register bit.\r |
60 | @retval EFI_INVALID_PARAMETER Operation is not defined in EFI_SMBUS_OPERATION.\r |
61 | Or Length/Buffer is NULL for operations except for EfiSmbusQuickRead and\r |
62 | EfiSmbusQuickWrite. Length is outside the range of valid values.\r |
63 | @retval EFI_UNSUPPORTED The SMBus operation or PEC is not supported.\r |
64 | @retval EFI_BUFFER_TOO_SMALL Buffer is not sufficient for this operation.\r |
65 | \r |
66 | **/\r |
67 | typedef\r |
68 | EFI_STATUS\r |
69 | (EFIAPI *EFI_PEI_SMBUS_PPI_EXECUTE_OPERATION) (\r |
70 | IN EFI_PEI_SERVICES **PeiServices,\r |
71 | IN EFI_PEI_SMBUS_PPI *This,\r |
72 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r |
73 | IN EFI_SMBUS_DEVICE_COMMAND Command,\r |
74 | IN EFI_SMBUS_OPERATION Operation,\r |
75 | IN BOOLEAN PecCheck,\r |
76 | IN OUT UINTN *Length,\r |
77 | IN OUT VOID *Buffer\r |
78 | );\r |
79 | \r |
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80 | /**\r |
81 | CallBack function can be registered in EFI_PEI_SMBUS_PPI_NOTIFY.\r |
82 | \r |
83 | @param PeiServices A pointer to the system PEI Services Table.\r |
84 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r |
85 | @param SlaveAddress The SMBUS hardware address to which the SMBUS\r |
86 | device is preassigned or allocated.\r |
87 | @param Data Data of the SMBus host notify command that\r |
88 | the caller wants to be called.\r |
89 | \r |
90 | @return Status Code\r |
91 | \r |
92 | **/\r |
93 | typedef\r |
94 | EFI_STATUS\r |
95 | (EFIAPI *EFI_PEI_SMBUS_NOTIFY_FUNCTION) (\r |
96 | IN EFI_PEI_SERVICES **PeiServices,\r |
97 | IN EFI_PEI_SMBUS_PPI *SmbusPpi,\r |
98 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r |
99 | IN UINTN Data\r |
100 | );\r |
101 | \r |
102 | /**\r |
103 | The ArpDevice() function enumerates the entire bus or enumerates a specific\r |
104 | device that is identified by SmbusUdid.\r |
105 | \r |
106 | @param PeiServices A pointer to the system PEI Services Table.\r |
107 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r |
108 | @param ArpAll A Boolean expression that indicates if the host drivers need\r |
109 | to enumerate all the devices or enumerate only the device that is identified\r |
110 | by SmbusUdid. If ArpAll is TRUE, SmbusUdid and SlaveAddress are optional.\r |
111 | If ArpAll is FALSE, ArpDevice will enumerate SmbusUdid and the address\r |
112 | will be at SlaveAddress.\r |
113 | @param SmbusUdid The targeted SMBus Unique Device Identifier (UDID).\r |
114 | The UDID may not exist for SMBus devices with fixed addresses.\r |
115 | @param SlaveAddress The new SMBus address for the slave device for\r |
116 | which the operation is targeted.\r |
117 | \r |
118 | @retval EFI_SUCCESS The SMBus slave device address was set.\r |
119 | @retval EFI_INVALID_PARAMETER SlaveAddress is NULL.\r |
120 | @retval EFI_OUT_OF_RESOURCES The request could not be completed\r |
121 | due to a lack of resources.\r |
122 | @retval EFI_TIMEOUT The SMBus slave device did not respond.\r |
123 | @retval EFI_DEVICE_ERROR The request was not completed because the transaction failed.\r |
124 | \r |
125 | **/\r |
126 | typedef\r |
127 | EFI_STATUS\r |
128 | (EFIAPI *EFI_PEI_SMBUS_PPI_ARP_DEVICE) (\r |
129 | IN EFI_PEI_SERVICES **PeiServices,\r |
130 | IN EFI_PEI_SMBUS_PPI *This,\r |
131 | IN BOOLEAN ArpAll,\r |
132 | IN EFI_SMBUS_UDID *SmbusUdid, OPTIONAL\r |
133 | IN OUT EFI_SMBUS_DEVICE_ADDRESS *SlaveAddress OPTIONAL\r |
134 | );\r |
135 | \r |
136 | typedef struct {\r |
137 | EFI_SMBUS_DEVICE_ADDRESS SmbusDeviceAddress;\r |
138 | EFI_SMBUS_UDID SmbusDeviceUdid;\r |
139 | } EFI_SMBUS_DEVICE_MAP;\r |
140 | \r |
141 | /**\r |
142 | The GetArpMap() function returns the mapping of all the SMBus devices\r |
143 | that are enumerated by the SMBus host driver.\r |
144 | \r |
145 | @param PeiServices A pointer to the system PEI Services Table.\r |
146 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r |
147 | @param Length Size of the buffer that contains the SMBus device map.\r |
148 | @param SmbusDeviceMap The pointer to the device map as enumerated\r |
149 | by the SMBus controller driver.\r |
150 | \r |
151 | @retval EFI_SUCCESS The device map was returned correctly in the buffer.\r |
152 | \r |
153 | **/\r |
154 | typedef\r |
155 | EFI_STATUS\r |
156 | (EFIAPI *EFI_PEI_SMBUS_PPI_GET_ARP_MAP) (\r |
157 | IN EFI_PEI_SERVICES **PeiServices,\r |
158 | IN EFI_PEI_SMBUS_PPI *This,\r |
159 | IN OUT UINTN *Length,\r |
160 | IN OUT EFI_SMBUS_DEVICE_MAP **SmbusDeviceMap\r |
161 | );\r |
162 | \r |
163 | /**\r |
164 | The Notify() function registers all the callback functions to allow the\r |
165 | bus driver to call these functions when the SlaveAddress/Data pair happens.\r |
166 | \r |
167 | @param PeiServices A pointer to the system PEI Services Table.\r |
168 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r |
169 | @param SlaveAddress Address that the host controller detects as\r |
170 | sending a message and calls all the registered functions.\r |
171 | @param Data Data that the host controller detects as sending a message\r |
172 | and calls all the registered functions.\r |
173 | @param NotifyFunction The function to call when the bus driver\r |
174 | detects the SlaveAddress and Data pair.\r |
175 | \r |
176 | @retval EFI_SUCCESS NotifyFunction has been registered.\r |
177 | \r |
178 | **/\r |
179 | typedef\r |
180 | EFI_STATUS\r |
181 | (EFIAPI *EFI_PEI_SMBUS_PPI_NOTIFY) (\r |
182 | IN EFI_PEI_SERVICES **PeiServices,\r |
183 | IN EFI_PEI_SMBUS_PPI *This,\r |
184 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r |
185 | IN UINTN Data,\r |
186 | IN EFI_PEI_SMBUS_NOTIFY_FUNCTION NotifyFunction\r |
187 | );\r |
188 | \r |
189 | /**\r |
190 | @par Ppi Description:\r |
191 | Provides the basic I/O interfaces that a PEIM uses to access\r |
192 | its SMBus controller and the slave devices attached to it.\r |
193 | \r |
194 | @param Execute\r |
195 | Executes the SMBus operation to an SMBus slave device.\r |
196 | \r |
197 | @param ArpDevice\r |
198 | Allows an SMBus 2.0 device(s) to be Address Resolution Protocol (ARP)\r |
199 | \r |
200 | @param GetArpMap\r |
201 | Allows a PEIM to retrieve the address that was allocated by the SMBus\r |
202 | host controller during enumeration/ARP.\r |
203 | \r |
204 | @param Notify\r |
205 | Allows a driver to register for a callback to the SMBus host\r |
206 | controller driver when the bus issues a notification to the bus controller PEIM.\r |
207 | \r |
208 | **/\r |
209 | struct _EFI_PEI_SMBUS_PPI {\r |
210 | EFI_PEI_SMBUS_PPI_EXECUTE_OPERATION Execute;\r |
211 | EFI_PEI_SMBUS_PPI_ARP_DEVICE ArpDevice;\r |
212 | EFI_PEI_SMBUS_PPI_GET_ARP_MAP GetArpMap;\r |
213 | EFI_PEI_SMBUS_PPI_NOTIFY Notify;\r |
214 | };\r |
215 | \r |
216 | extern EFI_GUID gEfiPeiSmbusPpiGuid;\r |
217 | \r |
218 | #endif\r |