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1/** @file\r
2 Header file for Sata Controller driver.\r
3\r
d1102dba 4 Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>\r
24fee052 5 Copyright (c) 2018, ARM Ltd. All rights reserved.<BR>\r
9d510e61 6 SPDX-License-Identifier: BSD-2-Clause-Patent\r
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7\r
8**/\r
9\r
10#ifndef _SATA_CONTROLLER_H_\r
11#define _SATA_CONTROLLER_H_\r
12\r
13#include <Uefi.h>\r
14\r
15#include <IndustryStandard/Pci.h>\r
16\r
17#include <Protocol/ComponentName.h>\r
18#include <Protocol/DriverBinding.h>\r
19#include <Protocol/PciIo.h>\r
20#include <Protocol/IdeControllerInit.h>\r
21\r
22#include <Library/BaseLib.h>\r
23#include <Library/BaseMemoryLib.h>\r
24#include <Library/DebugLib.h>\r
25#include <Library/UefiLib.h>\r
26#include <Library/UefiDriverEntryPoint.h>\r
27#include <Library/MemoryAllocationLib.h>\r
28#include <Library/UefiBootServicesTableLib.h>\r
29\r
30//\r
31// Global Variables definitions\r
32//\r
33extern EFI_DRIVER_BINDING_PROTOCOL gSataControllerDriverBinding;\r
34extern EFI_COMPONENT_NAME_PROTOCOL gSataControllerComponentName;\r
35extern EFI_COMPONENT_NAME2_PROTOCOL gSataControllerComponentName2;\r
36\r
37#define AHCI_BAR_INDEX 0x05\r
38#define R_AHCI_CAP 0x0\r
39#define B_AHCI_CAP_NPS (BIT4 | BIT3 | BIT2 | BIT1 | BIT0) // Number of Ports\r
40#define B_AHCI_CAP_SPM BIT17 // Supports Port Multiplier\r
aa4240ed 41#define R_AHCI_PI 0xC\r
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42\r
43///\r
44/// AHCI each channel can have up to 1 device\r
45///\r
46#define AHCI_MAX_DEVICES 0x01\r
47\r
48///\r
49/// AHCI each channel can have 15 devices in the presence of a multiplier\r
50///\r
51#define AHCI_MULTI_MAX_DEVICES 0x0F\r
52\r
53///\r
54/// IDE supports 2 channel max\r
55///\r
56#define IDE_MAX_CHANNEL 0x02\r
57\r
58///\r
59/// IDE supports 2 devices max\r
60///\r
61#define IDE_MAX_DEVICES 0x02\r
62\r
63#define SATA_ENUMER_ALL FALSE\r
64\r
65//\r
66// Sata Controller driver private data structure\r
67//\r
68#define SATA_CONTROLLER_SIGNATURE SIGNATURE_32('S','A','T','A')\r
69\r
70typedef struct _EFI_SATA_CONTROLLER_PRIVATE_DATA {\r
71 //\r
72 // Standard signature used to identify Sata Controller private data\r
73 //\r
74 UINT32 Signature;\r
75\r
76 //\r
77 // Protocol instance of IDE_CONTROLLER_INIT produced by this driver\r
78 //\r
79 EFI_IDE_CONTROLLER_INIT_PROTOCOL IdeInit;\r
80\r
81 //\r
82 // Copy of protocol pointers used by this driver\r
83 //\r
84 EFI_PCI_IO_PROTOCOL *PciIo;\r
85\r
86 //\r
87 // The number of devices that are supported by this channel\r
88 //\r
89 UINT8 DeviceCount;\r
90\r
91 //\r
92 // The highest disqulified mode for each attached device,\r
93 // From ATA/ATAPI spec, if a mode is not supported,\r
94 // the modes higher than it is also not supported\r
95 //\r
96 EFI_ATA_COLLECTIVE_MODE *DisqualifiedModes;\r
97\r
98 //\r
99 // A copy of EFI_IDENTIFY_DATA data for each attached SATA device and its flag\r
100 //\r
101 EFI_IDENTIFY_DATA *IdentifyData;\r
102 BOOLEAN *IdentifyValid;\r
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103\r
104 //\r
105 // Track the state so that the PCI attributes that were modified\r
106 // can be restored to the original value later.\r
107 //\r
108 BOOLEAN PciAttributesChanged;\r
109\r
110 //\r
111 // Copy of the original PCI Attributes\r
112 //\r
113 UINT64 OriginalPciAttributes;\r
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114} EFI_SATA_CONTROLLER_PRIVATE_DATA;\r
115\r
116#define SATA_CONTROLLER_PRIVATE_DATA_FROM_THIS(a) CR(a, EFI_SATA_CONTROLLER_PRIVATE_DATA, IdeInit, SATA_CONTROLLER_SIGNATURE)\r
117\r
118//\r
119// Driver binding functions declaration\r
120//\r
121/**\r
122 Supported function of Driver Binding protocol for this driver.\r
123 Test to see if this driver supports ControllerHandle.\r
124\r
125 @param This Protocol instance pointer.\r
126 @param Controller Handle of device to test.\r
127 @param RemainingDevicePath A pointer to the device path. Should be ignored by\r
128 device driver.\r
129\r
130 @retval EFI_SUCCESS This driver supports this device.\r
131 @retval EFI_ALREADY_STARTED This driver is already running on this device.\r
132 @retval other This driver does not support this device.\r
133\r
134**/\r
135EFI_STATUS\r
136EFIAPI\r
137SataControllerSupported (\r
138 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
139 IN EFI_HANDLE Controller,\r
140 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
141 );\r
142\r
143/**\r
d1102dba 144 This routine is called right after the .Supported() called and\r
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145 Start this driver on ControllerHandle.\r
146\r
147 @param This Protocol instance pointer.\r
148 @param Controller Handle of device to bind driver to.\r
149 @param RemainingDevicePath A pointer to the device path. Should be ignored by\r
150 device driver.\r
151\r
152 @retval EFI_SUCCESS This driver is added to this device.\r
153 @retval EFI_ALREADY_STARTED This driver is already running on this device.\r
154 @retval other Some error occurs when binding this driver to this device.\r
155\r
156**/\r
157EFI_STATUS\r
158EFIAPI\r
159SataControllerStart (\r
160 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
161 IN EFI_HANDLE Controller,\r
162 IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
163 );\r
164\r
165/**\r
166 Stop this driver on ControllerHandle.\r
167\r
168 @param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.\r
169 @param Controller A handle to the device being stopped.\r
170 @param NumberOfChildren The number of child device handles in ChildHandleBuffer.\r
d1102dba 171 @param ChildHandleBuffer An array of child handles to be freed.\r
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172\r
173 @retval EFI_SUCCESS This driver is removed from this device.\r
174 @retval other Some error occurs when removing this driver from this device.\r
175\r
176**/\r
177EFI_STATUS\r
178EFIAPI\r
179SataControllerStop (\r
180 IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
181 IN EFI_HANDLE Controller,\r
182 IN UINTN NumberOfChildren,\r
183 IN EFI_HANDLE *ChildHandleBuffer\r
184 );\r
185\r
186//\r
187// IDE controller init functions declaration\r
188//\r
189/**\r
190 Returns the information about the specified IDE channel.\r
d1102dba 191\r
fda951df 192 This function can be used to obtain information about a particular IDE channel.\r
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193 The driver entity uses this information during the enumeration process.\r
194\r
195 If Enabled is set to FALSE, the driver entity will not scan the channel. Note\r
fda951df 196 that it will not prevent an operating system driver from scanning the channel.\r
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197\r
198 For most of today's controllers, MaxDevices will either be 1 or 2. For SATA\r
199 controllers, this value will always be 1. SATA configurations can contain SATA\r
fda951df 200 port multipliers. SATA port multipliers behave like SATA bridges and can support\r
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201 up to 16 devices on the other side. If a SATA port out of the IDE controller\r
202 is connected to a port multiplier, MaxDevices will be set to the number of SATA\r
203 devices that the port multiplier supports. Because today's port multipliers\r
204 support up to fifteen SATA devices, this number can be as large as fifteen. The IDE\r
205 bus driver is required to scan for the presence of port multipliers behind an SATA\r
206 controller and enumerate up to MaxDevices number of devices behind the port\r
207 multiplier.\r
208\r
209 In this context, the devices behind a port multiplier constitute a channel.\r
210\r
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211 @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
212 @param[in] Channel Zero-based channel number.\r
d1102dba 213 @param[out] Enabled TRUE if this channel is enabled. Disabled channels\r
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214 are not scanned to see if any devices are present.\r
215 @param[out] MaxDevices The maximum number of IDE devices that the bus driver\r
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216 can expect on this channel. For the ATA/ATAPI\r
217 specification, version 6, this number will either be\r
218 one or two. For Serial ATA (SATA) configurations with a\r
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219 port multiplier, this number can be as large as fifteen.\r
220\r
221\r
222 @retval EFI_SUCCESS Information was returned without any errors.\r
223 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
224\r
225**/\r
226EFI_STATUS\r
227EFIAPI\r
228IdeInitGetChannelInfo (\r
229 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
230 IN UINT8 Channel,\r
231 OUT BOOLEAN *Enabled,\r
232 OUT UINT8 *MaxDevices\r
233 );\r
234\r
235/**\r
236 The notifications from the driver entity that it is about to enter a certain\r
237 phase of the IDE channel enumeration process.\r
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238\r
239 This function can be used to notify the IDE controller driver to perform\r
240 specific actions, including any chipset-specific initialization, so that the\r
241 chipset is ready to enter the next phase. Seven notification points are defined\r
242 at this time.\r
243\r
244 More synchronization points may be added as required in the future.\r
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245\r
246 @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL\r
247 instance.\r
248 @param[in] Phase The phase during enumeration.\r
249 @param[in] Channel Zero-based channel number.\r
250\r
251 @retval EFI_SUCCESS The notification was accepted without any errors.\r
252 @retval EFI_UNSUPPORTED Phase is not supported.\r
253 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
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254 @retval EFI_NOT_READY This phase cannot be entered at this time; for\r
255 example, an attempt was made to enter a Phase\r
256 without having entered one or more previous\r
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257 Phase.\r
258\r
259**/\r
260EFI_STATUS\r
261EFIAPI\r
262IdeInitNotifyPhase (\r
263 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
264 IN EFI_IDE_CONTROLLER_ENUM_PHASE Phase,\r
265 IN UINT8 Channel\r
266 );\r
267\r
268/**\r
269 Submits the device information to the IDE controller driver.\r
270\r
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271 This function is used by the driver entity to pass detailed information about\r
272 a particular device to the IDE controller driver. The driver entity obtains\r
fda951df 273 this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData\r
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274 is the pointer to the response data buffer. The IdentifyData buffer is owned\r
275 by the driver entity, and the IDE controller driver must make a local copy\r
276 of the entire buffer or parts of the buffer as needed. The original IdentifyData\r
fda951df 277 buffer pointer may not be valid when\r
d1102dba 278\r
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279 - EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or\r
280 - EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.\r
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281\r
282 The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to\r
283 compute the optimum mode for the device. These fields are not limited to the\r
284 timing information. For example, an implementation of the IDE controller driver\r
285 may examine the vendor and type/mode field to match known bad drives.\r
286\r
287 The driver entity may submit drive information in any order, as long as it\r
288 submits information for all the devices belonging to the enumeration group\r
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289 before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device\r
290 in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()\r
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291 should be called with IdentifyData set to NULL. The IDE controller driver may\r
292 not have any other mechanism to know whether a device is present or not. Therefore,\r
293 setting IdentifyData to NULL does not constitute an error condition.\r
294 EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a\r
295 given (Channel, Device) pair.\r
296\r
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297 @param[in] This A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
298 @param[in] Channel Zero-based channel number.\r
299 @param[in] Device Zero-based device number on the Channel.\r
300 @param[in] IdentifyData The device's response to the ATA IDENTIFY_DEVICE command.\r
301\r
302 @retval EFI_SUCCESS The information was accepted without any errors.\r
303 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
304 @retval EFI_INVALID_PARAMETER Device is invalid.\r
305\r
306**/\r
307EFI_STATUS\r
308EFIAPI\r
309IdeInitSubmitData (\r
310 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
311 IN UINT8 Channel,\r
312 IN UINT8 Device,\r
313 IN EFI_IDENTIFY_DATA *IdentifyData\r
314 );\r
315\r
316/**\r
317 Disqualifies specific modes for an IDE device.\r
318\r
d1102dba 319 This function allows the driver entity or other drivers (such as platform\r
fda951df 320 drivers) to reject certain timing modes and request the IDE controller driver\r
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321 to recalculate modes. This function allows the driver entity and the IDE\r
322 controller driver to negotiate the timings on a per-device basis. This function\r
323 is useful in the case of drives that lie about their capabilities. An example\r
324 is when the IDE device fails to accept the timing modes that are calculated\r
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325 by the IDE controller driver based on the response to the Identify Drive command.\r
326\r
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327 If the driver entity does not want to limit the ATA timing modes and leave that\r
328 decision to the IDE controller driver, it can either not call this function for\r
329 the given device or call this function and set the Valid flag to FALSE for all\r
fda951df 330 modes that are listed in EFI_ATA_COLLECTIVE_MODE.\r
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331\r
332 The driver entity may disqualify modes for a device in any order and any number\r
fda951df 333 of times.\r
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334\r
335 This function can be called multiple times to invalidate multiple modes of the\r
336 same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI\r
337 specification for more information on PIO modes.\r
338\r
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339 For Serial ATA (SATA) controllers, this member function can be used to disqualify\r
340 a higher transfer rate mode on a given channel. For example, a platform driver\r
d1102dba 341 may inform the IDE controller driver to not use second-generation (Gen2) speeds\r
fda951df 342 for a certain SATA drive.\r
d1102dba 343\r
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344 @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
345 @param[in] Channel The zero-based channel number.\r
346 @param[in] Device The zero-based device number on the Channel.\r
347 @param[in] BadModes The modes that the device does not support and that\r
348 should be disqualified.\r
349\r
350 @retval EFI_SUCCESS The modes were accepted without any errors.\r
351 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
352 @retval EFI_INVALID_PARAMETER Device is invalid.\r
353 @retval EFI_INVALID_PARAMETER IdentifyData is NULL.\r
d1102dba 354\r
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355**/\r
356EFI_STATUS\r
357EFIAPI\r
358IdeInitDisqualifyMode (\r
359 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
360 IN UINT8 Channel,\r
361 IN UINT8 Device,\r
362 IN EFI_ATA_COLLECTIVE_MODE *BadModes\r
363 );\r
364\r
365/**\r
366 Returns the information about the optimum modes for the specified IDE device.\r
367\r
368 This function is used by the driver entity to obtain the optimum ATA modes for\r
d1102dba 369 a specific device. The IDE controller driver takes into account the following\r
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370 while calculating the mode:\r
371 - The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()\r
372 - The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()\r
373\r
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374 The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()\r
375 for all the devices that belong to an enumeration group before calling\r
376 EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.\r
377\r
378 The IDE controller driver will use controller- and possibly platform-specific\r
379 algorithms to arrive at SupportedModes. The IDE controller may base its\r
380 decision on user preferences and other considerations as well. This function\r
381 may be called multiple times because the driver entity may renegotiate the mode\r
fda951df 382 with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().\r
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383\r
384 The driver entity may collect timing information for various devices in any\r
fda951df 385 order. The driver entity is responsible for making sure that all the dependencies\r
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386 are satisfied. For example, the SupportedModes information for device A that\r
387 was previously returned may become stale after a call to\r
fda951df 388 EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.\r
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389\r
390 The buffer SupportedModes is allocated by the callee because the caller does\r
391 not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE\r
392 is defined in a way that allows for future extensibility and can be of variable\r
393 length. This memory pool should be deallocated by the caller when it is no\r
394 longer necessary.\r
395\r
396 The IDE controller driver for a Serial ATA (SATA) controller can use this\r
397 member function to force a lower speed (first-generation [Gen1] speeds on a\r
398 second-generation [Gen2]-capable hardware). The IDE controller driver can\r
399 also allow the driver entity to stay with the speed that has been negotiated\r
fda951df 400 by the physical layer.\r
d1102dba 401\r
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402 @param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
403 @param[in] Channel A zero-based channel number.\r
404 @param[in] Device A zero-based device number on the Channel.\r
405 @param[out] SupportedModes The optimum modes for the device.\r
406\r
407 @retval EFI_SUCCESS SupportedModes was returned.\r
408 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
d1102dba 409 @retval EFI_INVALID_PARAMETER Device is invalid.\r
fda951df 410 @retval EFI_INVALID_PARAMETER SupportedModes is NULL.\r
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411 @retval EFI_NOT_READY Modes cannot be calculated due to a lack of\r
412 data. This error may happen if\r
413 EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()\r
414 and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()\r
415 were not called for at least one drive in the\r
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416 same enumeration group.\r
417\r
418**/\r
419EFI_STATUS\r
420EFIAPI\r
421IdeInitCalculateMode (\r
422 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
423 IN UINT8 Channel,\r
424 IN UINT8 Device,\r
425 OUT EFI_ATA_COLLECTIVE_MODE **SupportedModes\r
426 );\r
427\r
428/**\r
429 Commands the IDE controller driver to program the IDE controller hardware\r
430 so that the specified device can operate at the specified mode.\r
431\r
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432 This function is used by the driver entity to instruct the IDE controller\r
433 driver to program the IDE controller hardware to the specified modes. This\r
434 function can be called only once for a particular device. For a Serial ATA\r
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435 (SATA) Advanced Host Controller Interface (AHCI) controller, no controller-\r
436 specific programming may be required.\r
437\r
438 @param[in] This Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.\r
439 @param[in] Channel Zero-based channel number.\r
440 @param[in] Device Zero-based device number on the Channel.\r
441 @param[in] Modes The modes to set.\r
442\r
443 @retval EFI_SUCCESS The command was accepted without any errors.\r
444 @retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).\r
445 @retval EFI_INVALID_PARAMETER Device is invalid.\r
446 @retval EFI_NOT_READY Modes cannot be set at this time due to lack of data.\r
447 @retval EFI_DEVICE_ERROR Modes cannot be set due to hardware failure.\r
448 The driver entity should not use this device.\r
449\r
450**/\r
451EFI_STATUS\r
452EFIAPI\r
453IdeInitSetTiming (\r
454 IN EFI_IDE_CONTROLLER_INIT_PROTOCOL *This,\r
455 IN UINT8 Channel,\r
456 IN UINT8 Device,\r
457 IN EFI_ATA_COLLECTIVE_MODE *Modes\r
458 );\r
459\r
460//\r
461// Forward reference declaration\r
462//\r
463/**\r
464 Retrieves a Unicode string that is the user readable name of the UEFI Driver.\r
465\r
466 @param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.\r
467 @param Language A pointer to a three character ISO 639-2 language identifier.\r
468 This is the language of the driver name that that the caller\r
469 is requesting, and it must match one of the languages specified\r
470 in SupportedLanguages. The number of languages supported by a\r
471 driver is up to the driver writer.\r
472 @param DriverName A pointer to the Unicode string to return. This Unicode string\r
473 is the name of the driver specified by This in the language\r
474 specified by Language.\r
475\r
476 @retval EFI_SUCCESS The Unicode string for the Driver specified by This\r
477 and the language specified by Language was returned\r
478 in DriverName.\r
479 @retval EFI_INVALID_PARAMETER Language is NULL.\r
480 @retval EFI_INVALID_PARAMETER DriverName is NULL.\r
481 @retval EFI_UNSUPPORTED The driver specified by This does not support the\r
482 language specified by Language.\r
483**/\r
484EFI_STATUS\r
485EFIAPI\r
486SataControllerComponentNameGetDriverName (\r
487 IN EFI_COMPONENT_NAME_PROTOCOL *This,\r
488 IN CHAR8 *Language,\r
489 OUT CHAR16 **DriverName\r
490 );\r
491\r
492/**\r
493 Retrieves a Unicode string that is the user readable name of the controller\r
494 that is being managed by an UEFI Driver.\r
495\r
496 @param This A pointer to the EFI_COMPONENT_NAME_PROTOCOL instance.\r
497 @param ControllerHandle The handle of a controller that the driver specified by\r
498 This is managing. This handle specifies the controller\r
499 whose name is to be returned.\r
500 @param OPTIONAL ChildHandle The handle of the child controller to retrieve the name\r
501 of. This is an optional parameter that may be NULL. It\r
502 will be NULL for device drivers. It will also be NULL\r
503 for a bus drivers that wish to retrieve the name of the\r
504 bus controller. It will not be NULL for a bus driver\r
505 that wishes to retrieve the name of a child controller.\r
506 @param Language A pointer to a three character ISO 639-2 language\r
507 identifier. This is the language of the controller name\r
508 that that the caller is requesting, and it must match one\r
509 of the languages specified in SupportedLanguages. The\r
510 number of languages supported by a driver is up to the\r
511 driver writer.\r
512 @param ControllerName A pointer to the Unicode string to return. This Unicode\r
513 string is the name of the controller specified by\r
514 ControllerHandle and ChildHandle in the language\r
515 specified by Language from the point of view of the\r
516 driver specified by This.\r
517\r
518 @retval EFI_SUCCESS The Unicode string for the user readable name in the\r
519 language specified by Language for the driver\r
520 specified by This was returned in DriverName.\r
521 @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.\r
522 @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
523 EFI_HANDLE.\r
524 @retval EFI_INVALID_PARAMETER Language is NULL.\r
525 @retval EFI_INVALID_PARAMETER ControllerName is NULL.\r
526 @retval EFI_UNSUPPORTED The driver specified by This is not currently\r
527 managing the controller specified by\r
528 ControllerHandle and ChildHandle.\r
529 @retval EFI_UNSUPPORTED The driver specified by This does not support the\r
530 language specified by Language.\r
531**/\r
532EFI_STATUS\r
533EFIAPI\r
534SataControllerComponentNameGetControllerName (\r
535 IN EFI_COMPONENT_NAME_PROTOCOL *This,\r
536 IN EFI_HANDLE ControllerHandle,\r
537 IN EFI_HANDLE ChildHandle OPTIONAL,\r
538 IN CHAR8 *Language,\r
539 OUT CHAR16 **ControllerName\r
540 );\r
541\r
542#endif\r
543\r