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79964ac8 | 1 | /** @file\r |
4a71b21a | 2 | This file declares Smbus PPI which provides the basic I/O interfaces that a PEIM \r |
3 | uses to access its SMBus controller and the slave devices attached to it.\r | |
79964ac8 | 4 | \r |
2bbaeb0d | 5 | Copyright (c) 2007 - 2009, Intel Corporation\r |
79964ac8 | 6 | All rights reserved. This program and the accompanying materials\r |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
79964ac8 | 14 | @par Revision Reference:\r |
15 | This PPI is defined in Framework of EFI SmBus PPI spec.\r | |
16 | Version 0.9\r | |
17 | \r | |
18 | **/\r | |
19 | \r | |
4ebb0d9e | 20 | #ifndef _PEI_SMBUS_PPI_H_\r |
21 | #define _PEI_SMBUS_PPI_H_\r | |
79964ac8 | 22 | \r |
b80fbe85 | 23 | #include <PiPei.h>\r |
3f3181b4 | 24 | #include <Ppi/Smbus2.h>\r |
79964ac8 | 25 | \r |
26 | #define EFI_PEI_SMBUS_PPI_GUID \\r | |
27 | { \\r | |
28 | 0xabd42895, 0x78cf, 0x4872, {0x84, 0x44, 0x1b, 0x5c, 0x18, 0xb, 0xfb, 0xda } \\r | |
29 | }\r | |
30 | \r | |
31 | typedef struct _EFI_PEI_SMBUS_PPI EFI_PEI_SMBUS_PPI;\r | |
32 | \r | |
33 | /**\r | |
34 | Executes an SMBus operation to an SMBus controller.\r | |
35 | \r | |
36 | @param PeiServices A pointer to the system PEI Services Table.\r | |
37 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r | |
38 | @param SlaveAddress The SMBUS hardware address to which the SMBUS\r | |
39 | device is preassigned or allocated.\r | |
40 | @param Command This command is transmitted by the SMBus host\r | |
41 | controller to the SMBus slave device and the interpretation is\r | |
42 | SMBus slave device specific.\r | |
43 | @param Operation Signifies which particular SMBus hardware protocol\r | |
44 | instance that it will use to execute the SMBus transactions.\r | |
45 | @param PecCheck Defines if Packet Error Code (PEC) checking is required\r | |
46 | for this operation.\r | |
47 | @param Length Signifies the number of bytes that this operation will do.\r | |
48 | @param Buffer Contains the value of data to execute to the SMBus slave device.\r | |
49 | \r | |
50 | @retval EFI_SUCCESS The last data that was returned from the access\r | |
51 | matched the poll exit criteria.\r | |
9ca1b12e | 52 | @retval EFI_CRC_ERROR The checksum is not correct (PEC is incorrect).\r |
79964ac8 | 53 | @retval EFI_TIMEOUT Timeout expired before the operation was completed.\r |
54 | Timeout is determined by the SMBus host controller device.\r | |
55 | @retval EFI_OUT_OF_RESOURCES The request could not be completed\r | |
56 | due to a lack of resources.\r | |
57 | @retval EFI_DEVICE_ERROR The request was not completed because\r | |
58 | a failure reflected in the Host Status Register bit.\r | |
59 | @retval EFI_INVALID_PARAMETER Operation is not defined in EFI_SMBUS_OPERATION.\r | |
9ca1b12e | 60 | @retval EFI_INVALID_PARAMETER Length/Buffer is NULL for operations except for EfiSmbusQuickRead and\r |
79964ac8 | 61 | EfiSmbusQuickWrite. Length is outside the range of valid values.\r |
62 | @retval EFI_UNSUPPORTED The SMBus operation or PEC is not supported.\r | |
63 | @retval EFI_BUFFER_TOO_SMALL Buffer is not sufficient for this operation.\r | |
64 | \r | |
65 | **/\r | |
66 | typedef\r | |
67 | EFI_STATUS\r | |
69686d56 | 68 | (EFIAPI *EFI_PEI_SMBUS_PPI_EXECUTE_OPERATION)(\r |
79964ac8 | 69 | IN EFI_PEI_SERVICES **PeiServices,\r |
700a7869 | 70 | IN EFI_PEI_SMBUS_PPI *This,\r |
79964ac8 | 71 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r |
72 | IN EFI_SMBUS_DEVICE_COMMAND Command,\r | |
73 | IN EFI_SMBUS_OPERATION Operation,\r | |
74 | IN BOOLEAN PecCheck,\r | |
75 | IN OUT UINTN *Length,\r | |
76 | IN OUT VOID *Buffer\r | |
77 | );\r | |
78 | \r | |
79964ac8 | 79 | /**\r |
80 | CallBack function can be registered in EFI_PEI_SMBUS_PPI_NOTIFY.\r | |
81 | \r | |
82 | @param PeiServices A pointer to the system PEI Services Table.\r | |
83 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r | |
84 | @param SlaveAddress The SMBUS hardware address to which the SMBUS\r | |
85 | device is preassigned or allocated.\r | |
86 | @param Data Data of the SMBus host notify command that\r | |
87 | the caller wants to be called.\r | |
88 | \r | |
9ca1b12e | 89 | @return Status Code returned by callback function.\r |
79964ac8 | 90 | \r |
91 | **/\r | |
92 | typedef\r | |
93 | EFI_STATUS\r | |
69686d56 | 94 | (EFIAPI *EFI_PEI_SMBUS_NOTIFY_FUNCTION)(\r |
79964ac8 | 95 | IN EFI_PEI_SERVICES **PeiServices,\r |
700a7869 | 96 | IN EFI_PEI_SMBUS_PPI *SmbusPpi,\r |
79964ac8 | 97 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r |
98 | IN UINTN Data\r | |
99 | );\r | |
100 | \r | |
101 | /**\r | |
102 | The ArpDevice() function enumerates the entire bus or enumerates a specific\r | |
103 | device that is identified by SmbusUdid.\r | |
104 | \r | |
105 | @param PeiServices A pointer to the system PEI Services Table.\r | |
106 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r | |
107 | @param ArpAll A Boolean expression that indicates if the host drivers need\r | |
108 | to enumerate all the devices or enumerate only the device that is identified\r | |
109 | by SmbusUdid. If ArpAll is TRUE, SmbusUdid and SlaveAddress are optional.\r | |
110 | If ArpAll is FALSE, ArpDevice will enumerate SmbusUdid and the address\r | |
111 | will be at SlaveAddress.\r | |
112 | @param SmbusUdid The targeted SMBus Unique Device Identifier (UDID).\r | |
113 | The UDID may not exist for SMBus devices with fixed addresses.\r | |
114 | @param SlaveAddress The new SMBus address for the slave device for\r | |
115 | which the operation is targeted.\r | |
116 | \r | |
117 | @retval EFI_SUCCESS The SMBus slave device address was set.\r | |
118 | @retval EFI_INVALID_PARAMETER SlaveAddress is NULL.\r | |
119 | @retval EFI_OUT_OF_RESOURCES The request could not be completed\r | |
120 | due to a lack of resources.\r | |
121 | @retval EFI_TIMEOUT The SMBus slave device did not respond.\r | |
122 | @retval EFI_DEVICE_ERROR The request was not completed because the transaction failed.\r | |
123 | \r | |
124 | **/\r | |
125 | typedef\r | |
126 | EFI_STATUS\r | |
69686d56 | 127 | (EFIAPI *EFI_PEI_SMBUS_PPI_ARP_DEVICE)(\r |
79964ac8 | 128 | IN EFI_PEI_SERVICES **PeiServices,\r |
700a7869 | 129 | IN EFI_PEI_SMBUS_PPI *This,\r |
79964ac8 | 130 | IN BOOLEAN ArpAll,\r |
131 | IN EFI_SMBUS_UDID *SmbusUdid, OPTIONAL\r | |
132 | IN OUT EFI_SMBUS_DEVICE_ADDRESS *SlaveAddress OPTIONAL\r | |
133 | );\r | |
134 | \r | |
79964ac8 | 135 | /**\r |
136 | The GetArpMap() function returns the mapping of all the SMBus devices\r | |
137 | that are enumerated by the SMBus host driver.\r | |
138 | \r | |
139 | @param PeiServices A pointer to the system PEI Services Table.\r | |
140 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r | |
141 | @param Length Size of the buffer that contains the SMBus device map.\r | |
142 | @param SmbusDeviceMap The pointer to the device map as enumerated\r | |
143 | by the SMBus controller driver.\r | |
144 | \r | |
9ca1b12e | 145 | @retval EFI_SUCCESS The device map was returned correctly in the buffer.\r |
79964ac8 | 146 | \r |
147 | **/\r | |
148 | typedef\r | |
149 | EFI_STATUS\r | |
69686d56 | 150 | (EFIAPI *EFI_PEI_SMBUS_PPI_GET_ARP_MAP)(\r |
79964ac8 | 151 | IN EFI_PEI_SERVICES **PeiServices,\r |
700a7869 | 152 | IN EFI_PEI_SMBUS_PPI *This,\r |
79964ac8 | 153 | IN OUT UINTN *Length,\r |
154 | IN OUT EFI_SMBUS_DEVICE_MAP **SmbusDeviceMap\r | |
155 | );\r | |
156 | \r | |
157 | /**\r | |
9ca1b12e | 158 | Allows a device driver to register for a callback when the bus driver detects a state that it needs to \r |
159 | propagate to other PEIMs that are registered for a callback.\r | |
160 | \r | |
79964ac8 | 161 | The Notify() function registers all the callback functions to allow the\r |
162 | bus driver to call these functions when the SlaveAddress/Data pair happens.\r | |
163 | \r | |
164 | @param PeiServices A pointer to the system PEI Services Table.\r | |
165 | @param This A pointer to the EFI_PEI_SMBUS_PPI instance.\r | |
166 | @param SlaveAddress Address that the host controller detects as\r | |
167 | sending a message and calls all the registered functions.\r | |
168 | @param Data Data that the host controller detects as sending a message\r | |
169 | and calls all the registered functions.\r | |
170 | @param NotifyFunction The function to call when the bus driver\r | |
171 | detects the SlaveAddress and Data pair.\r | |
172 | \r | |
9ca1b12e | 173 | @retval EFI_SUCCESS NotifyFunction has been registered.\r |
79964ac8 | 174 | \r |
175 | **/\r | |
176 | typedef\r | |
177 | EFI_STATUS\r | |
69686d56 | 178 | (EFIAPI *EFI_PEI_SMBUS_PPI_NOTIFY)(\r |
9ca1b12e | 179 | IN EFI_PEI_SERVICES **PeiServices,\r |
180 | IN EFI_PEI_SMBUS_PPI *This,\r | |
181 | IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,\r | |
182 | IN UINTN Data,\r | |
700a7869 | 183 | IN EFI_PEI_SMBUS_NOTIFY_FUNCTION NotifyFunction\r |
79964ac8 | 184 | );\r |
185 | \r | |
9ca1b12e | 186 | ///\r |
187 | /// Provides the basic I/O interfaces that a PEIM uses to access\r | |
188 | /// its SMBus controller and the slave devices attached to it.\r | |
189 | ///\r | |
79964ac8 | 190 | struct _EFI_PEI_SMBUS_PPI {\r |
2bbaeb0d | 191 | ///\r |
192 | /// Executes the SMBus operation to an SMBus slave device.\r | |
193 | ///\r | |
79964ac8 | 194 | EFI_PEI_SMBUS_PPI_EXECUTE_OPERATION Execute;\r |
2bbaeb0d | 195 | \r |
196 | ///\r | |
197 | /// Allows an SMBus 2.0 device(s) to be Address Resolution Protocol (ARP)\r | |
198 | ///\r | |
79964ac8 | 199 | EFI_PEI_SMBUS_PPI_ARP_DEVICE ArpDevice;\r |
2bbaeb0d | 200 | \r |
201 | ///\r | |
202 | /// Allows a PEIM to retrieve the address that was allocated by the SMBus\r | |
203 | /// host controller during enumeration/ARP. \r | |
204 | ///\r | |
79964ac8 | 205 | EFI_PEI_SMBUS_PPI_GET_ARP_MAP GetArpMap;\r |
2bbaeb0d | 206 | \r |
207 | ///\r | |
208 | /// Allows a driver to register for a callback to the SMBus host\r | |
209 | /// controller driver when the bus issues a notification to the bus controller PEIM. \r | |
210 | ///\r | |
79964ac8 | 211 | EFI_PEI_SMBUS_PPI_NOTIFY Notify;\r |
212 | };\r | |
213 | \r | |
214 | extern EFI_GUID gEfiPeiSmbusPpiGuid;\r | |
215 | \r | |
216 | #endif\r |