[mirror_edk2.git] / IntelFrameworkModulePkg / Bus / Isa / IsaIoDxe / IsaDriver.h

/** @file\r
  The header file for ISA driver\r
\r
Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution.  The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef _ISA_DRIVER_H_\r
#define _ISA_DRIVER_H_\r
\r
\r
#include <Uefi.h>\r
\r
#include <Protocol/PciIo.h>\r
#include <Protocol/SuperIo.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/IsaIo.h>\r
#include <Protocol/DevicePath.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/GenericMemoryTest.h>\r
#include <Guid/StatusCodeDataTypeId.h>\r
\r
#include <Library/DebugLib.h>\r
#include <Library/UefiDriverEntryPoint.h>\r
#include <Library/UefiLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include <Library/ReportStatusCodeLib.h>\r
#include <Library/PcdLib.h>\r
#include <IndustryStandard/Acpi.h>\r
\r
#include "ComponentName.h"\r
\r
//\r
// 8237 DMA registers\r
//\r
#define R_8237_DMA_BASE_CA_CH0                    0x00\r
#define R_8237_DMA_BASE_CA_CH1                    0x02\r
#define R_8237_DMA_BASE_CA_CH2                    0x04\r
#define R_8237_DMA_BASE_CA_CH3                    0xd6\r
#define R_8237_DMA_BASE_CA_CH5                    0xc4\r
#define R_8237_DMA_BASE_CA_CH6                    0xc8\r
#define R_8237_DMA_BASE_CA_CH7                    0xcc\r
\r
#define R_8237_DMA_BASE_CC_CH0                    0x01\r
#define R_8237_DMA_BASE_CC_CH1                    0x03\r
#define R_8237_DMA_BASE_CC_CH2                    0x05\r
#define R_8237_DMA_BASE_CC_CH3                    0xd7\r
#define R_8237_DMA_BASE_CC_CH5                    0xc6\r
#define R_8237_DMA_BASE_CC_CH6                    0xca\r
#define R_8237_DMA_BASE_CC_CH7                    0xce\r
\r
#define R_8237_DMA_MEM_LP_CH0                     0x87\r
#define R_8237_DMA_MEM_LP_CH1                     0x83\r
#define R_8237_DMA_MEM_LP_CH2                     0x81\r
#define R_8237_DMA_MEM_LP_CH3                     0x82\r
#define R_8237_DMA_MEM_LP_CH5                     0x8B\r
#define R_8237_DMA_MEM_LP_CH6                     0x89\r
#define R_8237_DMA_MEM_LP_CH7                     0x8A\r
\r
\r
#define R_8237_DMA_COMMAND_CH0_3                  0x08\r
#define R_8237_DMA_COMMAND_CH4_7                  0xd0\r
#define   B_8237_DMA_COMMAND_GAP                  0x10\r
#define   B_8237_DMA_COMMAND_CGE                  0x04\r
\r
\r
#define R_8237_DMA_STA_CH0_3                      0xd8\r
#define R_8237_DMA_STA_CH4_7                      0xd0\r
\r
#define R_8237_DMA_WRSMSK_CH0_3                   0x0a\r
#define R_8237_DMA_WRSMSK_CH4_7                   0xd4\r
#define   B_8237_DMA_WRSMSK_CMS                   0x04\r
\r
\r
#define R_8237_DMA_CHMODE_CH0_3                   0x0b\r
#define R_8237_DMA_CHMODE_CH4_7                   0xd6\r
#define   V_8237_DMA_CHMODE_DEMAND                0x00\r
#define   V_8237_DMA_CHMODE_SINGLE                0x40\r
#define   V_8237_DMA_CHMODE_CASCADE               0xc0\r
#define   B_8237_DMA_CHMODE_DECREMENT             0x20\r
#define   B_8237_DMA_CHMODE_INCREMENT             0x00\r
#define   B_8237_DMA_CHMODE_AE                    0x10\r
#define   V_8237_DMA_CHMODE_VERIFY                0\r
#define   V_8237_DMA_CHMODE_IO2MEM                0x04\r
#define   V_8237_DMA_CHMODE_MEM2IO                0x08\r
\r
#define R_8237_DMA_CBPR_CH0_3                     0x0c\r
#define R_8237_DMA_CBPR_CH4_7                     0xd8\r
\r
#define R_8237_DMA_MCR_CH0_3                      0x0d\r
#define R_8237_DMA_MCR_CH4_7                      0xda\r
\r
#define R_8237_DMA_CLMSK_CH0_3                    0x0e\r
#define R_8237_DMA_CLMSK_CH4_7                    0xdc\r
\r
#define R_8237_DMA_WRMSK_CH0_3                    0x0f\r
#define R_8237_DMA_WRMSK_CH4_7                    0xde\r
\r
typedef enum {\r
  IsaAccessTypeUnknown,\r
  IsaAccessTypeIo,\r
  IsaAccessTypeMem,\r
  IsaAccessTypeMaxType\r
} ISA_ACCESS_TYPE;\r
\r
typedef struct {\r
  UINT8 Address;\r
  UINT8 Page;\r
  UINT8 Count;\r
} EFI_ISA_DMA_REGISTERS;\r
\r
//\r
// ISA I/O Device Structure\r
//\r
#define ISA_IO_DEVICE_SIGNATURE SIGNATURE_32 ('i', 's', 'a', 'i')\r
\r
typedef struct {\r
  UINT32                                    Signature;\r
  EFI_HANDLE                                Handle;\r
  EFI_ISA_IO_PROTOCOL                       IsaIo;\r
  EFI_PCI_IO_PROTOCOL                       *PciIo;\r
} ISA_IO_DEVICE;\r
\r
#define ISA_IO_DEVICE_FROM_ISA_IO_THIS(a) CR (a, ISA_IO_DEVICE, IsaIo, ISA_IO_DEVICE_SIGNATURE)\r
\r
//\r
// Mapping structure for performing ISA DMA to a buffer above 16 MB\r
//\r
typedef struct {\r
  EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r
  UINTN                         NumberOfBytes;\r
  UINTN                         NumberOfPages;\r
  EFI_PHYSICAL_ADDRESS          HostAddress;\r
  EFI_PHYSICAL_ADDRESS          MappedHostAddress;\r
} ISA_MAP_INFO;\r
\r
//\r
// EFI Driver Binding Protocol Interface Functions\r
//\r
\r
/**\r
  Tests to see if a controller can be managed by the ISA Driver.\r
\r
  How the Start() function of a driver is implemented can affect how the Supported() function is implemented.\r
\r
  @param[in] This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in] Controller           The handle of the controller to test.\r
  @param[in] RemainingDevicePath  A pointer to the remaining portion of a device path.\r
\r
  @retval EFI_SUCCESS             The device is supported by this driver.\r
  @retval EFI_ALREADY_STARTED     The device is already being managed by this driver.\r
  @retval EFI_ACCESS_DENIED       The device is already being managed by a different driver\r
                                  or an application that requires exclusive access.\r
  @retval EFI_UNSUPPORTED         The device is is not supported by this driver.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverSupported (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  );\r
\r
/**\r
  Start this driver on ControllerHandle.\r
\r
  The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
  As a result, much of the error checking on the parameters to Start() has been moved into this\r
  common boot service. It is legal to call Start() from other locations, but the following calling\r
  restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE.\r
  2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
     EFI_DEVICE_PATH_PROTOCOL.\r
  3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
     have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
\r
  @param[in]  This                 A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle     The handle of the controller to start. This handle\r
                                   must support a protocol interface that supplies\r
                                   an I/O abstraction to the driver.\r
  @param[in]  RemainingDevicePath  A pointer to the remaining portion of a device path.\r
                                   This parameter is ignored by device drivers, and is optional for bus drivers.\r
\r
  @retval EFI_SUCCESS              The device was started.\r
  @retval EFI_DEVICE_ERROR         The device could not be started due to a device error.\r
                                   Currently not implemented.\r
  @retval EFI_OUT_OF_RESOURCES     The request could not be completed due to a lack of resources.\r
  @retval Others                   The driver failded to start the device.\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverStart (\r
  IN EFI_DRIVER_BINDING_PROTOCOL  *This,\r
  IN EFI_HANDLE                   Controller,\r
  IN EFI_DEVICE_PATH_PROTOCOL     *RemainingDevicePath OPTIONAL\r
  );\r
\r
/**\r
  Stop this driver on ControllerHandle.\r
\r
  The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
  As a result, much of the error checking on the parameters to Stop() has been moved\r
  into this common boot service. It is legal to call Stop() from other locations,\r
  but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
  1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
     same driver's Start() function.\r
  2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
     EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
     Start() function, and the Start() function must have called OpenProtocol() on\r
     ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
\r
  @param[in]  This              A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
  @param[in]  ControllerHandle  A handle to the device being stopped. The handle must\r
                                support a bus specific I/O protocol for the driver\r
                                to use to stop the device.\r
  @param[in]  NumberOfChildren  The number of child device handles in ChildHandleBuffer.\r
  @param[in]  ChildHandleBuffer An array of child handles to be freed. May be NULL\r
                                if NumberOfChildren is 0.\r
\r
  @retval EFI_SUCCESS           The device was stopped.\r
  @retval EFI_DEVICE_ERROR      The device could not be stopped due to a device error.\r
**/\r
EFI_STATUS\r
EFIAPI\r
IsaIoDriverStop (\r
  IN  EFI_DRIVER_BINDING_PROTOCOL  * This,\r
  IN  EFI_HANDLE                   Controller,\r
  IN  UINTN                        NumberOfChildren,\r
  IN  EFI_HANDLE                   * ChildHandleBuffer OPTIONAL\r
  );\r
\r
//\r
// Function Prototypes\r
//\r
\r
/**\r
  Initializes an ISA I/O Instance\r
\r
  @param[in] IsaIoDevice            The isa device to be initialized.\r
  @param[in] DevicePath             The device path of the isa device.\r
  @param[in] Resources              The ACPI resource list.\r
\r
**/\r
VOID\r
InitializeIsaIoInstance (\r
  IN ISA_IO_DEVICE               *IsaIoDevice,\r
  IN EFI_DEVICE_PATH_PROTOCOL    *DevicePath,\r
  IN ACPI_RESOURCE_HEADER_PTR    Resources\r
  );\r
\r
#endif\r
\r
Commit	Line	Data
558be455 RN	1	/** @file\r
558be455 RN	2	The header file for ISA driver\r
0a6f4824 LG	3	\r
0a6f4824 LG	4	Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>\r
558be455 RN	5	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	**/\r
	14	\r
	15	#ifndef _ISA_DRIVER_H_\r
	16	#define _ISA_DRIVER_H_\r
	17	\r
	18	\r
	19	#include <Uefi.h>\r
	20	\r
	21	#include <Protocol/PciIo.h>\r
	22	#include <Protocol/SuperIo.h>\r
	23	#include <Protocol/ComponentName.h>\r
	24	#include <Protocol/IsaIo.h>\r
	25	#include <Protocol/DevicePath.h>\r
	26	#include <Protocol/DriverBinding.h>\r
	27	#include <Protocol/GenericMemoryTest.h>\r
	28	#include <Guid/StatusCodeDataTypeId.h>\r
	29	\r
	30	#include <Library/DebugLib.h>\r
	31	#include <Library/UefiDriverEntryPoint.h>\r
	32	#include <Library/UefiLib.h>\r
	33	#include <Library/DevicePathLib.h>\r
	34	#include <Library/BaseMemoryLib.h>\r
	35	#include <Library/MemoryAllocationLib.h>\r
	36	#include <Library/UefiBootServicesTableLib.h>\r
	37	#include <Library/ReportStatusCodeLib.h>\r
	38	#include <Library/PcdLib.h>\r
	39	#include <IndustryStandard/Acpi.h>\r
	40	\r
	41	#include "ComponentName.h"\r
	42	\r
	43	//\r
	44	// 8237 DMA registers\r
	45	//\r
	46	#define R_8237_DMA_BASE_CA_CH0 0x00\r
	47	#define R_8237_DMA_BASE_CA_CH1 0x02\r
	48	#define R_8237_DMA_BASE_CA_CH2 0x04\r
	49	#define R_8237_DMA_BASE_CA_CH3 0xd6\r
	50	#define R_8237_DMA_BASE_CA_CH5 0xc4\r
	51	#define R_8237_DMA_BASE_CA_CH6 0xc8\r
	52	#define R_8237_DMA_BASE_CA_CH7 0xcc\r
	53	\r
	54	#define R_8237_DMA_BASE_CC_CH0 0x01\r
	55	#define R_8237_DMA_BASE_CC_CH1 0x03\r
	56	#define R_8237_DMA_BASE_CC_CH2 0x05\r
	57	#define R_8237_DMA_BASE_CC_CH3 0xd7\r
	58	#define R_8237_DMA_BASE_CC_CH5 0xc6\r
	59	#define R_8237_DMA_BASE_CC_CH6 0xca\r
	60	#define R_8237_DMA_BASE_CC_CH7 0xce\r
	61	\r
	62	#define R_8237_DMA_MEM_LP_CH0 0x87\r
	63	#define R_8237_DMA_MEM_LP_CH1 0x83\r
	64	#define R_8237_DMA_MEM_LP_CH2 0x81\r
	65	#define R_8237_DMA_MEM_LP_CH3 0x82\r
	66	#define R_8237_DMA_MEM_LP_CH5 0x8B\r
	67	#define R_8237_DMA_MEM_LP_CH6 0x89\r
	68	#define R_8237_DMA_MEM_LP_CH7 0x8A\r
69	\r
70	\r
71	#define R_8237_DMA_COMMAND_CH0_3 0x08\r
72	#define R_8237_DMA_COMMAND_CH4_7 0xd0\r
73	#define B_8237_DMA_COMMAND_GAP 0x10\r
74	#define B_8237_DMA_COMMAND_CGE 0x04\r
75	\r
76	\r
77	#define R_8237_DMA_STA_CH0_3 0xd8\r
78	#define R_8237_DMA_STA_CH4_7 0xd0\r
79	\r
80	#define R_8237_DMA_WRSMSK_CH0_3 0x0a\r
81	#define R_8237_DMA_WRSMSK_CH4_7 0xd4\r
82	#define B_8237_DMA_WRSMSK_CMS 0x04\r
83	\r
84	\r
85	#define R_8237_DMA_CHMODE_CH0_3 0x0b\r
86	#define R_8237_DMA_CHMODE_CH4_7 0xd6\r
87	#define V_8237_DMA_CHMODE_DEMAND 0x00\r
88	#define V_8237_DMA_CHMODE_SINGLE 0x40\r
89	#define V_8237_DMA_CHMODE_CASCADE 0xc0\r
90	#define B_8237_DMA_CHMODE_DECREMENT 0x20\r
91	#define B_8237_DMA_CHMODE_INCREMENT 0x00\r
92	#define B_8237_DMA_CHMODE_AE 0x10\r
93	#define V_8237_DMA_CHMODE_VERIFY 0\r
94	#define V_8237_DMA_CHMODE_IO2MEM 0x04\r
95	#define V_8237_DMA_CHMODE_MEM2IO 0x08\r
96	\r
97	#define R_8237_DMA_CBPR_CH0_3 0x0c\r
98	#define R_8237_DMA_CBPR_CH4_7 0xd8\r
99	\r
100	#define R_8237_DMA_MCR_CH0_3 0x0d\r
101	#define R_8237_DMA_MCR_CH4_7 0xda\r
102	\r
103	#define R_8237_DMA_CLMSK_CH0_3 0x0e\r
104	#define R_8237_DMA_CLMSK_CH4_7 0xdc\r
105	\r
106	#define R_8237_DMA_WRMSK_CH0_3 0x0f\r
107	#define R_8237_DMA_WRMSK_CH4_7 0xde\r
108	\r
109	typedef enum {\r
110	IsaAccessTypeUnknown,\r
111	IsaAccessTypeIo,\r
112	IsaAccessTypeMem,\r
113	IsaAccessTypeMaxType\r
114	} ISA_ACCESS_TYPE;\r
115	\r
116	typedef struct {\r
117	UINT8 Address;\r
118	UINT8 Page;\r
119	UINT8 Count;\r
120	} EFI_ISA_DMA_REGISTERS;\r
121	\r
122	//\r
123	// ISA I/O Device Structure\r
124	//\r
125	#define ISA_IO_DEVICE_SIGNATURE SIGNATURE_32 ('i', 's', 'a', 'i')\r
126	\r
127	typedef struct {\r
128	UINT32 Signature;\r
129	EFI_HANDLE Handle;\r
130	EFI_ISA_IO_PROTOCOL IsaIo;\r
131	EFI_PCI_IO_PROTOCOL *PciIo;\r
132	} ISA_IO_DEVICE;\r
133	\r
134	#define ISA_IO_DEVICE_FROM_ISA_IO_THIS(a) CR (a, ISA_IO_DEVICE, IsaIo, ISA_IO_DEVICE_SIGNATURE)\r
135	\r
136	//\r
137	// Mapping structure for performing ISA DMA to a buffer above 16 MB\r
138	//\r
139	typedef struct {\r
140	EFI_ISA_IO_PROTOCOL_OPERATION Operation;\r
141	UINTN NumberOfBytes;\r
142	UINTN NumberOfPages;\r
143	EFI_PHYSICAL_ADDRESS HostAddress;\r
144	EFI_PHYSICAL_ADDRESS MappedHostAddress;\r
145	} ISA_MAP_INFO;\r
146	\r
147	//\r
148	// EFI Driver Binding Protocol Interface Functions\r
149	//\r
150	\r
0a6f4824	151	/**\r
558be455 RN	152	Tests to see if a controller can be managed by the ISA Driver.\r
	153	\r
	154	How the Start() function of a driver is implemented can affect how the Supported() function is implemented.\r
	155	\r
0a6f4824	156	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
558be455 RN	157	@param[in] Controller The handle of the controller to test.\r
558be455 RN	158	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
0a6f4824	159	\r
558be455 RN	160	@retval EFI_SUCCESS The device is supported by this driver.\r
558be455 RN	161	@retval EFI_ALREADY_STARTED The device is already being managed by this driver.\r
0a6f4824	162	@retval EFI_ACCESS_DENIED The device is already being managed by a different driver\r
558be455 RN	163	or an application that requires exclusive access.\r
	164	@retval EFI_UNSUPPORTED The device is is not supported by this driver.\r
	165	\r
	166	**/\r
	167	EFI_STATUS\r
	168	EFIAPI\r
	169	IsaIoDriverSupported (\r
	170	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	171	IN EFI_HANDLE Controller,\r
	172	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
	173	);\r
	174	\r
	175	/**\r
0a6f4824 LG	176	Start this driver on ControllerHandle.\r
	177	\r
	178	The Start() function is designed to be invoked from the EFI boot service ConnectController().\r
	179	As a result, much of the error checking on the parameters to Start() has been moved into this\r
	180	common boot service. It is legal to call Start() from other locations, but the following calling\r
558be455 RN	181	restrictions must be followed or the system behavior will not be deterministic.\r
	182	1. ControllerHandle must be a valid EFI_HANDLE.\r
	183	2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally aligned\r
	184	EFI_DEVICE_PATH_PROTOCOL.\r
	185	3. Prior to calling Start(), the Supported() function for the driver specified by This must\r
0a6f4824	186	have been called with the same calling parameters, and Supported() must have returned EFI_SUCCESS.\r
558be455 RN	187	\r
558be455 RN	188	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
0a6f4824 LG	189	@param[in] ControllerHandle The handle of the controller to start. This handle\r
0a6f4824 LG	190	must support a protocol interface that supplies\r
558be455	191	an I/O abstraction to the driver.\r
0a6f4824	192	@param[in] RemainingDevicePath A pointer to the remaining portion of a device path.\r
558be455 RN	193	This parameter is ignored by device drivers, and is optional for bus drivers.\r
	194	\r
	195	@retval EFI_SUCCESS The device was started.\r
	196	@retval EFI_DEVICE_ERROR The device could not be started due to a device error.\r
	197	Currently not implemented.\r
	198	@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
	199	@retval Others The driver failded to start the device.\r
	200	**/\r
	201	EFI_STATUS\r
	202	EFIAPI\r
	203	IsaIoDriverStart (\r
	204	IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
	205	IN EFI_HANDLE Controller,\r
	206	IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
	207	);\r
	208	\r
	209	/**\r
0a6f4824 LG	210	Stop this driver on ControllerHandle.\r
	211	\r
	212	The Stop() function is designed to be invoked from the EFI boot service DisconnectController().\r
	213	As a result, much of the error checking on the parameters to Stop() has been moved\r
	214	into this common boot service. It is legal to call Stop() from other locations,\r
558be455 RN	215	but the following calling restrictions must be followed or the system behavior will not be deterministic.\r
	216	1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this\r
	217	same driver's Start() function.\r
	218	2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid\r
	219	EFI_HANDLE. In addition, all of these handles must have been created in this driver's\r
	220	Start() function, and the Start() function must have called OpenProtocol() on\r
	221	ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.\r
0a6f4824	222	\r
558be455	223	@param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
0a6f4824 LG	224	@param[in] ControllerHandle A handle to the device being stopped. The handle must\r
0a6f4824 LG	225	support a bus specific I/O protocol for the driver\r
558be455 RN	226	to use to stop the device.\r
558be455 RN	227	@param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
0a6f4824	228	@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL\r
558be455 RN	229	if NumberOfChildren is 0.\r
	230	\r
	231	@retval EFI_SUCCESS The device was stopped.\r
	232	@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
	233	**/\r
	234	EFI_STATUS\r
	235	EFIAPI\r
	236	IsaIoDriverStop (\r
	237	IN EFI_DRIVER_BINDING_PROTOCOL * This,\r
	238	IN EFI_HANDLE Controller,\r
	239	IN UINTN NumberOfChildren,\r
	240	IN EFI_HANDLE * ChildHandleBuffer OPTIONAL\r
	241	);\r
	242	\r
	243	//\r
	244	// Function Prototypes\r
	245	//\r
	246	\r
	247	/**\r
	248	Initializes an ISA I/O Instance\r
	249	\r
	250	@param[in] IsaIoDevice The isa device to be initialized.\r
	251	@param[in] DevicePath The device path of the isa device.\r
	252	@param[in] Resources The ACPI resource list.\r
0a6f4824	253	\r
558be455 RN	254	**/\r
	255	VOID\r
	256	InitializeIsaIoInstance (\r
	257	IN ISA_IO_DEVICE *IsaIoDevice,\r
	258	IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,\r
	259	IN ACPI_RESOURCE_HEADER_PTR Resources\r
	260	);\r
	261	\r
	262	#endif\r
	263	\r