[mirror_edk2.git] / IntelFrameworkPkg / Include / Protocol / Legacy8259.h

/** @file\r
  This protocol abstracts the 8259 interrupt controller. This includes\r
  PCI IRQ routing need to program the PCI Interrupt Line register.\r
\r
  Copyright (c) 2007, Intel Corporation\r
  All rights reserved. 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
  Module Name:  Legacy8259.h\r
\r
  @par Revision Reference:\r
  This protocol is defined in Framework for EFI Compatibility Support Module spec\r
  Version 0.96\r
\r
**/\r
\r
#ifndef _EFI_LEGACY_8259_H_\r
#define _EFI_LEGACY_8259_H_\r
\r
#define EFI_LEGACY_8259_PROTOCOL_GUID \\r
  { \\r
    0x38321dba, 0x4fe0, 0x4e17, {0x8a, 0xec, 0x41, 0x30, 0x55, 0xea, 0xed, 0xc1 } \\r
  }\r
\r
typedef struct _EFI_LEGACY_8259_PROTOCOL EFI_LEGACY_8259_PROTOCOL;\r
\r
typedef enum {\r
  Efi8259Irq0,\r
  Efi8259Irq1,\r
  Efi8259Irq2,\r
  Efi8259Irq3,\r
  Efi8259Irq4,\r
  Efi8259Irq5,\r
  Efi8259Irq6,\r
  Efi8259Irq7,\r
  Efi8259Irq8,\r
  Efi8259Irq9,\r
  Efi8259Irq10,\r
  Efi8259Irq11,\r
  Efi8259Irq12,\r
  Efi8259Irq13,\r
  Efi8259Irq14,\r
  Efi8259Irq15,\r
  Efi8259IrqMax\r
} EFI_8259_IRQ;\r
\r
typedef enum {\r
  Efi8259LegacyMode,\r
  Efi8259ProtectedMode,\r
  Efi8259MaxMode\r
} EFI_8259_MODE;\r
\r
/**\r
  Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
  the legacy mode mask and the protected mode mask. The base address for the 8259\r
  is different for legacy and protected mode, so two masks are required.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  MasterBase            The base vector for the Master PIC in the 8259 controller\r
  @param  Slavebase             The base vector for the Master PIC in the 8259 controller\r
\r
  @retval EFI_SUCCESS           The new bases were programmed\r
  @retval EFI_DEVICE_ERROR      A device erro occured programming the vector bases\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_SET_VECTOR_BASE) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  UINT8                             MasterBase,\r
  IN  UINT8                             SlaveBase\r
  );\r
\r
/**\r
  Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
  the legacy mode mask and the protected mode mask. The base address for the 8259\r
  is different for legacy and protected mode, so two masks are required.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  LegacyMask            Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  LegacyEdgeLevel       Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  ProtectedMask         Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  ProtectedEdgeLevel    Bit 0 is Irq0 - Bit 15 is Irq15\r
\r
  @retval EFI_SUCCESS           8259 status returned\r
  @retval EFI_DEVICE_ERROR      Error reading 8259\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_GET_MASK) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  OUT UINT16                            *LegacyMask, OPTIONAL\r
  OUT UINT16                            *LegacyEdgeLevel, OPTIONAL\r
  OUT UINT16                            *ProtectedMask, OPTIONAL\r
  OUT UINT16                            *ProtectedEdgeLevel OPTIONAL\r
  );\r
\r
/**\r
  Set the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
  the legacy mode mask and the protected mode mask. The base address for the 8259\r
  is different for legacy and protected mode, so two masks are required.\r
  Also set the edge/level masks.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  LegacyMask            Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  LegacyEdgeLevel       Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  ProtectedMask         Bit 0 is Irq0 - Bit 15 is Irq15\r
  @param  ProtectedEdgeLevel    Bit 0 is Irq0 - Bit 15 is Irq15\r
\r
  @retval EFI_SUCCESS           8259 status returned\r
  @retval EFI_DEVICE_ERROR      Error reading 8259\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_SET_MASK) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  UINT16                            *LegacyMask, OPTIONAL\r
  IN  UINT16                            *LegacyEdgeLevel, OPTIONAL\r
  IN  UINT16                            *ProtectedMask, OPTIONAL\r
  IN  UINT16                            *ProtectedEdgeLevel OPTIONAL\r
  );\r
\r
/**\r
  Set the 8259 mode of operation. The base address for the 8259 is different for\r
  legacy and protected mode. The legacy mode requires the master 8259 to have a\r
  master base of 0x08 and the slave base of 0x70. The protected mode base locations\r
  are not defined. Interrupts must be masked by the caller before this function\r
  is called. The interrupt mask from the current mode is saved. The interrupt\r
  mask for the new mode is Mask, or if Mask does not exist the previously saved\r
  mask is used.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  Mode                  Mode of operation. i.e. real mode or protected mode\r
  @param  Mask                  Optional interupt mask for the new mode.\r
  @param  EdgeLevel             Optional trigger mask for the new mode.\r
\r
  @retval EFI_SUCCESS           8259 programmed\r
  @retval EFI_DEVICE_ERROR      Error writting to 8259\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_SET_MODE) (\r
  IN EFI_LEGACY_8259_PROTOCOL         *This,\r
  IN  EFI_8259_MODE                   Mode,\r
  IN  UINT16                          *Mask, OPTIONAL\r
  IN  UINT16                          *EdgeLevel OPTIONAL\r
  );\r
\r
/**\r
  Convert from IRQ to processor interrupt vector number.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  Irq                   8259 IRQ0 - IRQ15\r
  @param  Vector                Processor vector number that matches Irq\r
\r
  @retval EFI_SUCCESS           The Vector matching Irq is returned\r
  @retval EFI_INVALID_PARAMETER Irq not valid\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_GET_VECTOR) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  EFI_8259_IRQ                      Irq,\r
  OUT UINT8                             *Vector\r
  );\r
\r
/**\r
  Enable Irq by unmasking interrupt in 8259\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  Irq                   8259 IRQ0 - IRQ15\r
  @param  LevelTriggered        TRUE if level triggered. FALSE if edge triggered.\r
\r
  @retval EFI_SUCCESS           Irq enabled on 8259\r
  @retval EFI_INVALID_PARAMETER Irq not valid\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_ENABLE_IRQ) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  EFI_8259_IRQ                      Irq,\r
  IN  BOOLEAN                           LevelTriggered\r
  );\r
\r
/**\r
  Disable Irq by masking interrupt in 8259\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  Irq                   8259 IRQ0 - IRQ15\r
\r
  @retval EFI_SUCCESS           Irq disabled on 8259\r
  @retval EFI_INVALID_PARAMETER Irq not valid\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_DISABLE_IRQ) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  EFI_8259_IRQ                      Irq\r
  );\r
\r
/**\r
  PciHandle represents a PCI config space of a PCI function. Vector\r
  represents Interrupt Pin (from PCI config space) and it is the data\r
  that is programmed into the Interrupt Line (from the PCI config space)\r
  register.\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  PciHandle             PCI function to return vector for\r
  @param  Vector                Vector for fucntion that matches\r
\r
  @retval EFI_SUCCESS           A valid Vector is returned\r
  @retval EFI_INVALID_PARAMETER PciHandle not valid\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_GET_INTERRUPT_LINE) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  EFI_HANDLE                        PciHandle,\r
  OUT UINT8                             *Vector\r
  );\r
\r
/**\r
  Send an EOI to 8259\r
\r
  @param  This                  Protocol instance pointer.\r
  @param  Irq                   8259 IRQ0 - IRQ15\r
\r
  @retval EFI_SUCCESS           EOI successfully sent to 8259\r
  @retval EFI_INVALID_PARAMETER Irq not valid\r
\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_LEGACY_8259_END_OF_INTERRUPT) (\r
  IN EFI_LEGACY_8259_PROTOCOL           *This,\r
  IN  EFI_8259_IRQ                      Irq\r
  );\r
\r
/**\r
  @par Protocol Description:\r
  Abstracts the 8259 and APIC hardware control between EFI usage and\r
  Compatibility16 usage.\r
\r
  @param SetVectorBase\r
  Sets the vector bases for master and slave PICs.\r
\r
  @param GetMask\r
  Gets IRQ and edge/level masks for 16-bit real mode and 32-bit protected mode.\r
\r
  @param SetMask\r
  Sets the IRQ and edge\level masks for 16-bit real mode and 32-bit protected mode.\r
\r
  @param SetMode\r
  Sets PIC mode to 16-bit real mode or 32-bit protected mode.\r
\r
  @param GetVector\r
  Gets the base vector assigned to an IRQ.\r
\r
  @param EnableIrq\r
  Enables an IRQ.\r
\r
  @param DisableIrq\r
  Disables an IRQ.\r
\r
  @param GetInterruptLine\r
  Gets an IRQ that is assigned to a PCI device.\r
\r
  @param EndOfInterrupt\r
  Issues the end of interrupt command.\r
\r
**/\r
struct _EFI_LEGACY_8259_PROTOCOL {\r
  EFI_LEGACY_8259_SET_VECTOR_BASE     SetVectorBase;\r
  EFI_LEGACY_8259_GET_MASK            GetMask;\r
  EFI_LEGACY_8259_SET_MASK            SetMask;\r
  EFI_LEGACY_8259_SET_MODE            SetMode;\r
  EFI_LEGACY_8259_GET_VECTOR          GetVector;\r
  EFI_LEGACY_8259_ENABLE_IRQ          EnableIrq;\r
  EFI_LEGACY_8259_DISABLE_IRQ         DisableIrq;\r
  EFI_LEGACY_8259_GET_INTERRUPT_LINE  GetInterruptLine;\r
  EFI_LEGACY_8259_END_OF_INTERRUPT    EndOfInterrupt;\r
};\r
\r
extern EFI_GUID gEfiLegacy8259ProtocolGuid;\r
\r
#endif\r
Commit	Line	Data
79964ac8	1	/** @file\r
	2	This protocol abstracts the 8259 interrupt controller. This includes\r
	3	PCI IRQ routing need to program the PCI Interrupt Line register.\r
	4	\r
	5	Copyright (c) 2007, Intel Corporation\r
	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
	14	Module Name: Legacy8259.h\r
	15	\r
	16	@par Revision Reference:\r
	17	This protocol is defined in Framework for EFI Compatibility Support Module spec\r
	18	Version 0.96\r
	19	\r
	20	**/\r
	21	\r
	22	#ifndef _EFI_LEGACY_8259_H_\r
	23	#define _EFI_LEGACY_8259_H_\r
	24	\r
	25	#define EFI_LEGACY_8259_PROTOCOL_GUID \\r
	26	{ \\r
	27	0x38321dba, 0x4fe0, 0x4e17, {0x8a, 0xec, 0x41, 0x30, 0x55, 0xea, 0xed, 0xc1 } \\r
	28	}\r
	29	\r
	30	typedef struct _EFI_LEGACY_8259_PROTOCOL EFI_LEGACY_8259_PROTOCOL;\r
	31	\r
	32	typedef enum {\r
	33	Efi8259Irq0,\r
	34	Efi8259Irq1,\r
	35	Efi8259Irq2,\r
	36	Efi8259Irq3,\r
	37	Efi8259Irq4,\r
	38	Efi8259Irq5,\r
	39	Efi8259Irq6,\r
	40	Efi8259Irq7,\r
	41	Efi8259Irq8,\r
	42	Efi8259Irq9,\r
	43	Efi8259Irq10,\r
	44	Efi8259Irq11,\r
	45	Efi8259Irq12,\r
	46	Efi8259Irq13,\r
	47	Efi8259Irq14,\r
	48	Efi8259Irq15,\r
	49	Efi8259IrqMax\r
	50	} EFI_8259_IRQ;\r
	51	\r
	52	typedef enum {\r
	53	Efi8259LegacyMode,\r
	54	Efi8259ProtectedMode,\r
	55	Efi8259MaxMode\r
	56	} EFI_8259_MODE;\r
	57	\r
	58	/**\r
	59	Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
	60	the legacy mode mask and the protected mode mask. The base address for the 8259\r
	61	is different for legacy and protected mode, so two masks are required.\r
	62	\r
	63	@param This Protocol instance pointer.\r
	64	@param MasterBase The base vector for the Master PIC in the 8259 controller\r
65	@param Slavebase The base vector for the Master PIC in the 8259 controller\r
66	\r
67	@retval EFI_SUCCESS The new bases were programmed\r
68	@retval EFI_DEVICE_ERROR A device erro occured programming the vector bases\r
69	\r
70	**/\r
71	typedef\r
72	EFI_STATUS\r
73	(EFIAPI *EFI_LEGACY_8259_SET_VECTOR_BASE) (\r
74	IN EFI_LEGACY_8259_PROTOCOL *This,\r
75	IN UINT8 MasterBase,\r
76	IN UINT8 SlaveBase\r
77	);\r
78	\r
79	/**\r
80	Get the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
81	the legacy mode mask and the protected mode mask. The base address for the 8259\r
82	is different for legacy and protected mode, so two masks are required.\r
83	\r
84	@param This Protocol instance pointer.\r
85	@param LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15\r
86	@param LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15\r
87	@param ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15\r
88	@param ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15\r
89	\r
90	@retval EFI_SUCCESS 8259 status returned\r
91	@retval EFI_DEVICE_ERROR Error reading 8259\r
92	\r
93	**/\r
94	typedef\r
95	EFI_STATUS\r
96	(EFIAPI *EFI_LEGACY_8259_GET_MASK) (\r
97	IN EFI_LEGACY_8259_PROTOCOL *This,\r
98	OUT UINT16 *LegacyMask, OPTIONAL\r
99	OUT UINT16 *LegacyEdgeLevel, OPTIONAL\r
100	OUT UINT16 *ProtectedMask, OPTIONAL\r
101	OUT UINT16 *ProtectedEdgeLevel OPTIONAL\r
102	);\r
103	\r
104	/**\r
105	Set the 8259 interrupt masks for Irq0 - Irq15. A different mask exists for\r
106	the legacy mode mask and the protected mode mask. The base address for the 8259\r
107	is different for legacy and protected mode, so two masks are required.\r
108	Also set the edge/level masks.\r
109	\r
110	@param This Protocol instance pointer.\r
111	@param LegacyMask Bit 0 is Irq0 - Bit 15 is Irq15\r
112	@param LegacyEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15\r
113	@param ProtectedMask Bit 0 is Irq0 - Bit 15 is Irq15\r
114	@param ProtectedEdgeLevel Bit 0 is Irq0 - Bit 15 is Irq15\r
115	\r
116	@retval EFI_SUCCESS 8259 status returned\r
117	@retval EFI_DEVICE_ERROR Error reading 8259\r
118	\r
119	**/\r
120	typedef\r
121	EFI_STATUS\r
122	(EFIAPI *EFI_LEGACY_8259_SET_MASK) (\r
123	IN EFI_LEGACY_8259_PROTOCOL *This,\r
124	IN UINT16 *LegacyMask, OPTIONAL\r
125	IN UINT16 *LegacyEdgeLevel, OPTIONAL\r
126	IN UINT16 *ProtectedMask, OPTIONAL\r
127	IN UINT16 *ProtectedEdgeLevel OPTIONAL\r
128	);\r
129	\r
130	/**\r
131	Set the 8259 mode of operation. The base address for the 8259 is different for\r
132	legacy and protected mode. The legacy mode requires the master 8259 to have a\r
133	master base of 0x08 and the slave base of 0x70. The protected mode base locations\r
134	are not defined. Interrupts must be masked by the caller before this function\r
135	is called. The interrupt mask from the current mode is saved. The interrupt\r
136	mask for the new mode is Mask, or if Mask does not exist the previously saved\r
137	mask is used.\r
138	\r
139	@param This Protocol instance pointer.\r
140	@param Mode Mode of operation. i.e. real mode or protected mode\r
141	@param Mask Optional interupt mask for the new mode.\r
142	@param EdgeLevel Optional trigger mask for the new mode.\r
143	\r
144	@retval EFI_SUCCESS 8259 programmed\r
145	@retval EFI_DEVICE_ERROR Error writting to 8259\r
146	\r
147	**/\r
148	typedef\r
149	EFI_STATUS\r
150	(EFIAPI *EFI_LEGACY_8259_SET_MODE) (\r
151	IN EFI_LEGACY_8259_PROTOCOL *This,\r
152	IN EFI_8259_MODE Mode,\r
153	IN UINT16 *Mask, OPTIONAL\r
154	IN UINT16 *EdgeLevel OPTIONAL\r
155	);\r
156	\r
157	/**\r
158	Convert from IRQ to processor interrupt vector number.\r
159	\r
160	@param This Protocol instance pointer.\r
161	@param Irq 8259 IRQ0 - IRQ15\r
162	@param Vector Processor vector number that matches Irq\r
163	\r
164	@retval EFI_SUCCESS The Vector matching Irq is returned\r
165	@retval EFI_INVALID_PARAMETER Irq not valid\r
166	\r
167	**/\r
168	typedef\r
169	EFI_STATUS\r
170	(EFIAPI *EFI_LEGACY_8259_GET_VECTOR) (\r
171	IN EFI_LEGACY_8259_PROTOCOL *This,\r
172	IN EFI_8259_IRQ Irq,\r
173	OUT UINT8 *Vector\r
174	);\r
175	\r
176	/**\r
177	Enable Irq by unmasking interrupt in 8259\r
178	\r
179	@param This Protocol instance pointer.\r
180	@param Irq 8259 IRQ0 - IRQ15\r
181	@param LevelTriggered TRUE if level triggered. FALSE if edge triggered.\r
182	\r
183	@retval EFI_SUCCESS Irq enabled on 8259\r
184	@retval EFI_INVALID_PARAMETER Irq not valid\r
185	\r
186	**/\r
187	typedef\r
188	EFI_STATUS\r
189	(EFIAPI *EFI_LEGACY_8259_ENABLE_IRQ) (\r
190	IN EFI_LEGACY_8259_PROTOCOL *This,\r
191	IN EFI_8259_IRQ Irq,\r
192	IN BOOLEAN LevelTriggered\r
193	);\r
194	\r
195	/**\r
196	Disable Irq by masking interrupt in 8259\r
197	\r
198	@param This Protocol instance pointer.\r
199	@param Irq 8259 IRQ0 - IRQ15\r
200	\r
201	@retval EFI_SUCCESS Irq disabled on 8259\r
202	@retval EFI_INVALID_PARAMETER Irq not valid\r
203	\r
204	**/\r
205	typedef\r
206	EFI_STATUS\r
207	(EFIAPI *EFI_LEGACY_8259_DISABLE_IRQ) (\r
208	IN EFI_LEGACY_8259_PROTOCOL *This,\r
209	IN EFI_8259_IRQ Irq\r
210	);\r
211	\r
212	/**\r
213	PciHandle represents a PCI config space of a PCI function. Vector\r
214	represents Interrupt Pin (from PCI config space) and it is the data\r
215	that is programmed into the Interrupt Line (from the PCI config space)\r
216	register.\r
217	\r
218	@param This Protocol instance pointer.\r
219	@param PciHandle PCI function to return vector for\r
220	@param Vector Vector for fucntion that matches\r
221	\r
222	@retval EFI_SUCCESS A valid Vector is returned\r
223	@retval EFI_INVALID_PARAMETER PciHandle not valid\r
224	\r
225	**/\r
226	typedef\r
227	EFI_STATUS\r
228	(EFIAPI *EFI_LEGACY_8259_GET_INTERRUPT_LINE) (\r
229	IN EFI_LEGACY_8259_PROTOCOL *This,\r
230	IN EFI_HANDLE PciHandle,\r
231	OUT UINT8 *Vector\r
232	);\r
233	\r
234	/**\r
235	Send an EOI to 8259\r
236	\r
237	@param This Protocol instance pointer.\r
238	@param Irq 8259 IRQ0 - IRQ15\r
239	\r
240	@retval EFI_SUCCESS EOI successfully sent to 8259\r
241	@retval EFI_INVALID_PARAMETER Irq not valid\r
242	\r
243	**/\r
244	typedef\r
245	EFI_STATUS\r
246	(EFIAPI *EFI_LEGACY_8259_END_OF_INTERRUPT) (\r
247	IN EFI_LEGACY_8259_PROTOCOL *This,\r
248	IN EFI_8259_IRQ Irq\r
249	);\r
250	\r
251	/**\r
252	@par Protocol Description:\r
253	Abstracts the 8259 and APIC hardware control between EFI usage and\r
254	Compatibility16 usage.\r
255	\r
256	@param SetVectorBase\r
257	Sets the vector bases for master and slave PICs.\r
258	\r
259	@param GetMask\r
260	Gets IRQ and edge/level masks for 16-bit real mode and 32-bit protected mode.\r
261	\r
262	@param SetMask\r
263	Sets the IRQ and edge\level masks for 16-bit real mode and 32-bit protected mode.\r
264	\r
265	@param SetMode\r
266	Sets PIC mode to 16-bit real mode or 32-bit protected mode.\r
267	\r
268	@param GetVector\r
269	Gets the base vector assigned to an IRQ.\r
270	\r
271	@param EnableIrq\r
272	Enables an IRQ.\r
273	\r
274	@param DisableIrq\r
275	Disables an IRQ.\r
276	\r
277	@param GetInterruptLine\r
278	Gets an IRQ that is assigned to a PCI device.\r
279	\r
280	@param EndOfInterrupt\r
281	Issues the end of interrupt command.\r
282	\r
283	**/\r
284	struct _EFI_LEGACY_8259_PROTOCOL {\r
285	EFI_LEGACY_8259_SET_VECTOR_BASE SetVectorBase;\r
286	EFI_LEGACY_8259_GET_MASK GetMask;\r
287	EFI_LEGACY_8259_SET_MASK SetMask;\r
288	EFI_LEGACY_8259_SET_MODE SetMode;\r
289	EFI_LEGACY_8259_GET_VECTOR GetVector;\r
290	EFI_LEGACY_8259_ENABLE_IRQ EnableIrq;\r
291	EFI_LEGACY_8259_DISABLE_IRQ DisableIrq;\r
292	EFI_LEGACY_8259_GET_INTERRUPT_LINE GetInterruptLine;\r
293	EFI_LEGACY_8259_END_OF_INTERRUPT EndOfInterrupt;\r
294	};\r
295	\r
296	extern EFI_GUID gEfiLegacy8259ProtocolGuid;\r
297	\r
298	#endif\r