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c3902377 1/*++\r
2\r
3Copyright (c) 2006 - 2007, Intel Corporation. All rights reserved. \r
4This software and associated documentation (if any) is furnished\r
5under a license and may only be used or copied in accordance\r
6with the terms of the license. Except as permitted by such\r
7license, no part of this software or documentation may be\r
8reproduced, stored in a retrieval system, or transmitted in any\r
9form or by any means without the express written consent of\r
10Intel Corporation.\r
11\r
12Module Name:\r
13\r
14 IsaBus.h\r
15 \r
16Abstract:\r
17 \r
18 The header file for ISA bus driver\r
19 \r
20Revision History:\r
21\r
22--*/\r
23\r
24#ifndef _EFI_ISA_BUS_H\r
25#define _EFI_ISA_BUS_H\r
26\r
27//\r
28// Include common header file for this module.\r
29//\r
30#include "CommonHeader.h"\r
31\r
32#include "ComponentName.h"\r
33\r
34extern EFI_ISA_IO_PROTOCOL IsaIoInterface;\r
35\r
36typedef enum {\r
37 IsaAccessTypeUnknown,\r
38 IsaAccessTypeIo,\r
39 IsaAccessTypeMem,\r
40 IsaAccessTypeMaxType\r
41} ISA_ACCESS_TYPE;\r
42\r
43//\r
44// 16 MB Memory Range\r
45//\r
46#define ISA_MAX_MEMORY_ADDRESS 0x1000000\r
47//\r
48// 64K I/O Range\r
49//\r
50#define ISA_MAX_IO_ADDRESS 0x10000\r
51\r
52typedef struct {\r
53 UINT8 Address;\r
54 UINT8 Page;\r
55 UINT8 Count;\r
56} EFI_ISA_DMA_REGISTERS;\r
57\r
58//\r
59// ISA I/O Device Structure\r
60//\r
61#define ISA_IO_DEVICE_SIGNATURE EFI_SIGNATURE_32 ('i', 's', 'a', 'i')\r
62\r
63typedef struct {\r
64 UINT32 Signature;\r
65 EFI_HANDLE Handle;\r
66 EFI_ISA_IO_PROTOCOL IsaIo;\r
67 EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
68 EFI_PCI_IO_PROTOCOL *PciIo;\r
69} ISA_IO_DEVICE;\r
70\r
71#define ISA_IO_DEVICE_FROM_ISA_IO_THIS(a) CR (a, ISA_IO_DEVICE, IsaIo, ISA_IO_DEVICE_SIGNATURE)\r
72\r
73//\r
74// Global Variables\r
75//\r
76extern EFI_DRIVER_BINDING_PROTOCOL gIsaBusControllerDriver;\r
77\r
78//\r
79// Mapping structure for performing ISA DMA to a buffer above 16 MB\r
80//\r
81typedef struct {\r
82 EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r
83 UINTN NumberOfBytes;\r
84 UINTN NumberOfPages;\r
85 EFI_PHYSICAL_ADDRESS HostAddress;\r
86 EFI_PHYSICAL_ADDRESS MappedHostAddress;\r
87} ISA_MAP_INFO;\r
88\r
89//\r
90// EFI Driver Binding Protocol Interface Functions\r
91//\r
92\r
93EFI_STATUS\r
94EFIAPI\r
95IsaBusControllerDriverSupported (\r
96 IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
97 IN EFI_HANDLE Controller,\r
98 IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r
99 )\r
100/*++\r
101\r
102 Routine Description:\r
103 \r
104 This function checks to see if a controller can be managed by the ISA Bus \r
105 Driver. This is done by checking to see if the controller supports the \r
106 EFI_PCI_IO_PROTOCOL protocol, and then looking at the PCI Configuration \r
107 Header to see if the device is a PCI to ISA bridge. The class code of \r
108 PCI to ISA bridge: Base class 06h, Sub class 01h Interface 00h \r
109 \r
110 Arguments:\r
111 \r
112 This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r
113 Controller - The handle of the device to check.\r
114 RemainingDevicePath - A pointer to the remaining portion of a device path.\r
115\r
116 Returns:\r
117 \r
118 EFI_SUCCESS - The device is supported by this driver.\r
119 EFI_UNSUPPORTED - The device is not supported by this driver.\r
120\r
121--*/\r
122;\r
123\r
124EFI_STATUS\r
125EFIAPI\r
126IsaBusControllerDriverStart (\r
127 IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
128 IN EFI_HANDLE Controller,\r
129 IN EFI_DEVICE_PATH_PROTOCOL * RemainingDevicePath OPTIONAL\r
130 )\r
131/*++\r
132\r
133 Routine Description:\r
134 \r
135 This function tells the ISA Bus Driver to start managing a PCI to ISA \r
136 Bridge controller. \r
137 \r
138 Arguments:\r
139 \r
140 This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r
141 Controller - A handle to the device being started. \r
142 RemainingDevicePath - A pointer to the remaining portion of a device path.\r
143\r
144 Returns:\r
145 \r
146 EFI_SUCCESS - The device was started.\r
147 EFI_UNSUPPORTED - The device is not supported.\r
148 EFI_DEVICE_ERROR - The device could not be started due to a device error.\r
149 EFI_ALREADY_STARTED - The device has already been started.\r
150 EFI_INVALID_PARAMETER - One of the parameters has an invalid value.\r
151 EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r
152 resources.\r
153 \r
154--*/\r
155;\r
156\r
157EFI_STATUS\r
158EFIAPI\r
159IsaBusControllerDriverStop (\r
160 IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
161 IN EFI_HANDLE Controller,\r
162 IN UINTN NumberOfChildren,\r
163 IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r
164 )\r
165/*++\r
166\r
167 Routine Description:\r
168 \r
169 This function tells the ISA Bus Driver to stop managing a PCI to ISA \r
170 Bridge controller. \r
171 \r
172 Arguments:\r
173 \r
174 This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r
175 Controller - A handle to the device being stopped.\r
176 NumberOfChindren - The number of child device handles in ChildHandleBuffer.\r
177 ChildHandleBuffer - An array of child handles to be freed.\r
178\r
179 \r
180 Returns:\r
181 \r
182 EFI_SUCCESS - The device was stopped.\r
183 EFI_DEVICE_ERROR - The device could not be stopped due to a device error.\r
184 EFI_NOT_STARTED - The device has not been started.\r
185 EFI_INVALID_PARAMETER - One of the parameters has an invalid value.\r
186 EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r
187 resources.\r
188\r
189--*/\r
190;\r
191\r
192//\r
193// Function Prototypes\r
194//\r
195\r
196EFI_STATUS\r
197IsaCreateDevice (\r
198 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
199 IN EFI_HANDLE Controller,\r
200 IN EFI_PCI_IO_PROTOCOL *PciIo,\r
201 IN EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath,\r
202 IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList,\r
203 OUT EFI_DEVICE_PATH_PROTOCOL **ChildDevicePath\r
204 )\r
205/*++\r
206\r
207 Routine Description:\r
208 \r
209 Create ISA device found by IsaPnpProtocol \r
210\r
211 Arguments:\r
212 \r
213 This - The EFI_DRIVER_BINDING_PROTOCOL instance.\r
214 Controller - The handle of ISA bus controller(PCI to ISA bridge)\r
215 PciIo - The Pointer to the PCI protocol \r
216 ParentDevicePath - Device path of the ISA bus controller\r
217 IsaDeviceResourceList - The resource list of the ISA device\r
218 ChildDevicePath - The pointer to the child device.\r
219\r
220 Returns:\r
221 \r
222 EFI_SUCCESS - Create the child device.\r
223 EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of \r
224 resources.\r
225 EFI_DEVICE_ERROR - Can not create child device.\r
226 \r
227--*/\r
228;\r
229\r
230EFI_STATUS\r
231InitializeIsaIoInstance (\r
232 IN ISA_IO_DEVICE *IsaIoDevice,\r
233 IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDevice\r
234 )\r
235/*++\r
236\r
237Routine Description:\r
238\r
239 Initializes an ISA I/O Instance\r
240\r
241Arguments:\r
242\r
243 IsaIoDevice - The iso device to be initialized.\r
244 IsaDevice - The resource list.\r
245 \r
246Returns:\r
247\r
248 EFI_SUCCESS - Initial success.\r
249 \r
250--*/\r
251;\r
252\r
253#endif\r