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According to PI errata 0000690, word "Ide Bus driver" has been replaced with "Driver entity". 

Signed-off-by: erictian
Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12705 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
erictian 2011-11-15 09:43:32 +00:00
parent 01e20f0db7
commit 95717b9495
2 changed files with 385 additions and 91 deletions
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239
PcAtChipsetPkg/Bus/Pci/IdeControllerDxe/IdeController.c
View File

@ -3,7 +3,7 @@
IDE Bus driver to support platform dependent timing information. This driver
is responsible for early initialization of IDE controller.
Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2008 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@ -313,18 +313,40 @@ IdeControllerStop (
// Interface functions of IDE_CONTROLLER_INIT protocol
//
/**
This function can be used to obtain information about a specified channel.
It's usually used by IDE Bus driver during enumeration process.
Returns the information about the specified IDE channel.
This function can be used to obtain information about a particular IDE channel.
The driver entity uses this information during the enumeration process.
If Enabled is set to FALSE, the driver entity will not scan the channel. Note
that it will not prevent an operating system driver from scanning the channel.
For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
controllers, this value will always be 1. SATA configurations can contain SATA
port multipliers. SATA port multipliers behave like SATA bridges and can support
up to 16 devices on the other side. If a SATA port out of the IDE controller
is connected to a port multiplier, MaxDevices will be set to the number of SATA
devices that the port multiplier supports. Because today's port multipliers
support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
bus driver is required to scan for the presence of port multipliers behind an SATA
controller and enumerate up to MaxDevices number of devices behind the port
multiplier.
In this context, the devices behind a port multiplier constitute a channel.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[out] Enabled TRUE if this channel is enabled. Disabled channels
are not scanned to see if any devices are present.
@param[out] MaxDevices The maximum number of IDE devices that the bus driver
can expect on this channel. For the ATA/ATAPI
specification, version 6, this number will either be
one or two. For Serial ATA (SATA) configurations with a
port multiplier, this number can be as large as fifteen.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel Channel number (0 based, either 0 or 1)
@param Enabled TRUE if the channel is enabled. If the channel is disabled,
then it will no be enumerated.
@param MaxDevices The Max number of IDE devices that the bus driver can expect
on this channel. For ATA/ATAPI, this number is either 1 or 2.
@retval EFI_SUCCESS Information was returned without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_SUCCESS Success to get channel information
@retval EFI_INVALID_PARAMETER Invalid channel id.
**/
EFI_STATUS
EFIAPI
@ -349,14 +371,28 @@ IdeInitGetChannelInfo (
}
/**
This function is called by IdeBus driver before executing certain actions.
This allows IDE Controller Init to prepare for each action.
The notifications from the driver entity that it is about to enter a certain
phase of the IDE channel enumeration process.
This function can be used to notify the IDE controller driver to perform
specific actions, including any chipset-specific initialization, so that the
chipset is ready to enter the next phase. Seven notification points are defined
at this time.
More synchronization points may be added as required in the future.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Phase phase indicator defined by IDE_CONTROLLER_INIT protocol
@param Channel Channel number (0 based, either 0 or 1)
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Phase The phase during enumeration.
@param[in] Channel Zero-based channel number.
@retval EFI_SUCCESS The notification was accepted without any errors.
@retval EFI_UNSUPPORTED Phase is not supported.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_NOT_READY This phase cannot be entered at this time; for
example, an attempt was made to enter a Phase
without having entered one or more previous
Phase.
@return EFI_SUCCESS Success operation.
**/
EFI_STATUS
EFIAPI
@ -370,15 +406,43 @@ IdeInitNotifyPhase (
}
/**
This function is called by IdeBus driver to submit EFI_IDENTIFY_DATA data structure
obtained from IDE deivce. This structure is used to set IDE timing
Submits the device information to the IDE controller driver.
@param This The EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param IdentifyData A pointer to EFI_IDENTIFY_DATA data structure
This function is used by the driver entity to pass detailed information about
a particular device to the IDE controller driver. The driver entity obtains
this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData
is the pointer to the response data buffer. The IdentifyData buffer is owned
by the driver entity, and the IDE controller driver must make a local copy
of the entire buffer or parts of the buffer as needed. The original IdentifyData
buffer pointer may not be valid when
- EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or
- EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.
The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
compute the optimum mode for the device. These fields are not limited to the
timing information. For example, an implementation of the IDE controller driver
may examine the vendor and type/mode field to match known bad drives.
The driver entity may submit drive information in any order, as long as it
submits information for all the devices belonging to the enumeration group
before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device
in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
should be called with IdentifyData set to NULL. The IDE controller driver may
not have any other mechanism to know whether a device is present or not. Therefore,
setting IdentifyData to NULL does not constitute an error condition.
EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
given (Channel, Device) pair.
@param[in] This A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[in] Device Zero-based device number on the Channel.
@param[in] IdentifyData The device's response to the ATA IDENTIFY_DEVICE command.
@retval EFI_SUCCESS The information was accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@return EFI_SUCCESS Success operation.
**/
EFI_STATUS
EFIAPI
@ -393,15 +457,44 @@ IdeInitSubmitData (
}
/**
This function is called by IdeBus driver to disqualify unsupported operation
mode on specfic IDE device
Disqualifies specific modes for an IDE device.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param BadModes Operation mode indicator
This function allows the driver entity or other drivers (such as platform
drivers) to reject certain timing modes and request the IDE controller driver
to recalculate modes. This function allows the driver entity and the IDE
controller driver to negotiate the timings on a per-device basis. This function
is useful in the case of drives that lie about their capabilities. An example
is when the IDE device fails to accept the timing modes that are calculated
by the IDE controller driver based on the response to the Identify Drive command.
@return EFI_SUCCESS Success operation.
If the driver entity does not want to limit the ATA timing modes and leave that
decision to the IDE controller driver, it can either not call this function for
the given device or call this function and set the Valid flag to FALSE for all
modes that are listed in EFI_ATA_COLLECTIVE_MODE.
The driver entity may disqualify modes for a device in any order and any number
of times.
This function can be called multiple times to invalidate multiple modes of the
same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
specification for more information on PIO modes.
For Serial ATA (SATA) controllers, this member function can be used to disqualify
a higher transfer rate mode on a given channel. For example, a platform driver
may inform the IDE controller driver to not use second-generation (Gen2) speeds
for a certain SATA drive.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel The zero-based channel number.
@param[in] Device The zero-based device number on the Channel.
@param[in] BadModes The modes that the device does not support and that
should be disqualified.
@retval EFI_SUCCESS The modes were accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_INVALID_PARAMETER IdentifyData is NULL.
**/
EFI_STATUS
EFIAPI
@ -416,16 +509,58 @@ IdeInitDisqualifyMode (
}
/**
This function is called by IdeBus driver to calculate the best operation mode
supported by specific IDE device
Returns the information about the optimum modes for the specified IDE device.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param SupportedModes Modes collection supported by IDE device
This function is used by the driver entity to obtain the optimum ATA modes for
a specific device. The IDE controller driver takes into account the following
while calculating the mode:
- The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
- The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()
The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
for all the devices that belong to an enumeration group before calling
EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
The IDE controller driver will use controller- and possibly platform-specific
algorithms to arrive at SupportedModes. The IDE controller may base its
decision on user preferences and other considerations as well. This function
may be called multiple times because the driver entity may renegotiate the mode
with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().
The driver entity may collect timing information for various devices in any
order. The driver entity is responsible for making sure that all the dependencies
are satisfied. For example, the SupportedModes information for device A that
was previously returned may become stale after a call to
EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.
The buffer SupportedModes is allocated by the callee because the caller does
not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
is defined in a way that allows for future extensibility and can be of variable
length. This memory pool should be deallocated by the caller when it is no
longer necessary.
The IDE controller driver for a Serial ATA (SATA) controller can use this
member function to force a lower speed (first-generation [Gen1] speeds on a
second-generation [Gen2]-capable hardware). The IDE controller driver can
also allow the driver entity to stay with the speed that has been negotiated
by the physical layer.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel A zero-based channel number.
@param[in] Device A zero-based device number on the Channel.
@param[out] SupportedModes The optimum modes for the device.
@retval EFI_SUCCESS SupportedModes was returned.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_INVALID_PARAMETER SupportedModes is NULL.
@retval EFI_NOT_READY Modes cannot be calculated due to a lack of
data. This error may happen if
EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
were not called for at least one drive in the
same enumeration group.
@retval EFI_OUT_OF_RESOURCES Fail to allocate pool.
@retval EFI_INVALID_PARAMETER Invalid channel id and device id.
**/
EFI_STATUS
EFIAPI
@ -449,15 +584,27 @@ IdeInitCalculateMode (
}
/**
This function is called by IdeBus driver to set appropriate timing on IDE
controller according supported operation mode.
Commands the IDE controller driver to program the IDE controller hardware
so that the specified device can operate at the specified mode.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param Modes IDE device modes
This function is used by the driver entity to instruct the IDE controller
driver to program the IDE controller hardware to the specified modes. This
function can be called only once for a particular device. For a Serial ATA
(SATA) Advanced Host Controller Interface (AHCI) controller, no controller-
specific programming may be required.
@param[in] This Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[in] Device Zero-based device number on the Channel.
@param[in] Modes The modes to set.
@retval EFI_SUCCESS The command was accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_NOT_READY Modes cannot be set at this time due to lack of data.
@retval EFI_DEVICE_ERROR Modes cannot be set due to hardware failure.
The driver entity should not use this device.
@retval EFI_SUCCESS Sucess operation.
**/
EFI_STATUS
EFIAPI

237
PcAtChipsetPkg/Bus/Pci/IdeControllerDxe/IdeController.h
View File

@ -117,18 +117,40 @@ IdeControllerStop (
// IDE controller init functions declaration
//
/**
This function can be used to obtain information about a specified channel.
It's usually used by IDE Bus driver during enumeration process.
Returns the information about the specified IDE channel.
This function can be used to obtain information about a particular IDE channel.
The driver entity uses this information during the enumeration process.
If Enabled is set to FALSE, the driver entity will not scan the channel. Note
that it will not prevent an operating system driver from scanning the channel.
For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
controllers, this value will always be 1. SATA configurations can contain SATA
port multipliers. SATA port multipliers behave like SATA bridges and can support
up to 16 devices on the other side. If a SATA port out of the IDE controller
is connected to a port multiplier, MaxDevices will be set to the number of SATA
devices that the port multiplier supports. Because today's port multipliers
support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
bus driver is required to scan for the presence of port multipliers behind an SATA
controller and enumerate up to MaxDevices number of devices behind the port
multiplier.
In this context, the devices behind a port multiplier constitute a channel.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[out] Enabled TRUE if this channel is enabled. Disabled channels
are not scanned to see if any devices are present.
@param[out] MaxDevices The maximum number of IDE devices that the bus driver
can expect on this channel. For the ATA/ATAPI
specification, version 6, this number will either be
one or two. For Serial ATA (SATA) configurations with a
port multiplier, this number can be as large as fifteen.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel Channel number (0 based, either 0 or 1)
@param Enabled TRUE if the channel is enabled. If the channel is disabled,
then it will no be enumerated.
@param MaxDevices The Max number of IDE devices that the bus driver can expect
on this channel. For ATA/ATAPI, this number is either 1 or 2.
@retval EFI_SUCCESS Information was returned without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_SUCCESS Success to get channel information
@retval EFI_INVALID_PARAMETER Invalid channel id.
**/
EFI_STATUS
EFIAPI
@ -141,14 +163,28 @@ IdeInitGetChannelInfo (
;
/**
This function is called by IdeBus driver before executing certain actions.
This allows IDE Controller Init to prepare for each action.
The notifications from the driver entity that it is about to enter a certain
phase of the IDE channel enumeration process.
This function can be used to notify the IDE controller driver to perform
specific actions, including any chipset-specific initialization, so that the
chipset is ready to enter the next phase. Seven notification points are defined
at this time.
More synchronization points may be added as required in the future.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Phase phase indicator defined by IDE_CONTROLLER_INIT protocol
@param Channel Channel number (0 based, either 0 or 1)
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Phase The phase during enumeration.
@param[in] Channel Zero-based channel number.
@retval EFI_SUCCESS The notification was accepted without any errors.
@retval EFI_UNSUPPORTED Phase is not supported.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_NOT_READY This phase cannot be entered at this time; for
example, an attempt was made to enter a Phase
without having entered one or more previous
Phase.
@return EFI_SUCCESS Success operation.
**/
EFI_STATUS
EFIAPI
@ -160,15 +196,43 @@ IdeInitNotifyPhase (
;
/**
This function is called by IdeBus driver to submit EFI_IDENTIFY_DATA data structure
obtained from IDE deivce. This structure is used to set IDE timing
Submits the device information to the IDE controller driver.
@param This The EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param IdentifyData A pointer to EFI_IDENTIFY_DATA data structure
This function is used by the driver entity to pass detailed information about
a particular device to the IDE controller driver. The driver entity obtains
this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData
is the pointer to the response data buffer. The IdentifyData buffer is owned
by the driver entity, and the IDE controller driver must make a local copy
of the entire buffer or parts of the buffer as needed. The original IdentifyData
buffer pointer may not be valid when
- EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or
- EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.
The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
compute the optimum mode for the device. These fields are not limited to the
timing information. For example, an implementation of the IDE controller driver
may examine the vendor and type/mode field to match known bad drives.
The driver entity may submit drive information in any order, as long as it
submits information for all the devices belonging to the enumeration group
before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device
in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
should be called with IdentifyData set to NULL. The IDE controller driver may
not have any other mechanism to know whether a device is present or not. Therefore,
setting IdentifyData to NULL does not constitute an error condition.
EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
given (Channel, Device) pair.
@param[in] This A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[in] Device Zero-based device number on the Channel.
@param[in] IdentifyData The device's response to the ATA IDENTIFY_DEVICE command.
@retval EFI_SUCCESS The information was accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@return EFI_SUCCESS Success operation.
**/
EFI_STATUS
EFIAPI
@ -181,15 +245,44 @@ IdeInitSubmitData (
;
/**
This function is called by IdeBus driver to disqualify unsupported operation
mode on specfic IDE device
Disqualifies specific modes for an IDE device.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param BadModes Operation mode indicator
This function allows the driver entity or other drivers (such as platform
drivers) to reject certain timing modes and request the IDE controller driver
to recalculate modes. This function allows the driver entity and the IDE
controller driver to negotiate the timings on a per-device basis. This function
is useful in the case of drives that lie about their capabilities. An example
is when the IDE device fails to accept the timing modes that are calculated
by the IDE controller driver based on the response to the Identify Drive command.
@return EFI_SUCCESS Success operation.
If the driver entity does not want to limit the ATA timing modes and leave that
decision to the IDE controller driver, it can either not call this function for
the given device or call this function and set the Valid flag to FALSE for all
modes that are listed in EFI_ATA_COLLECTIVE_MODE.
The driver entity may disqualify modes for a device in any order and any number
of times.
This function can be called multiple times to invalidate multiple modes of the
same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
specification for more information on PIO modes.
For Serial ATA (SATA) controllers, this member function can be used to disqualify
a higher transfer rate mode on a given channel. For example, a platform driver
may inform the IDE controller driver to not use second-generation (Gen2) speeds
for a certain SATA drive.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel The zero-based channel number.
@param[in] Device The zero-based device number on the Channel.
@param[in] BadModes The modes that the device does not support and that
should be disqualified.
@retval EFI_SUCCESS The modes were accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_INVALID_PARAMETER IdentifyData is NULL.
**/
EFI_STATUS
EFIAPI
@ -202,16 +295,58 @@ IdeInitDisqualifyMode (
;
/**
This function is called by IdeBus driver to calculate the best operation mode
supported by specific IDE device
Returns the information about the optimum modes for the specified IDE device.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param SupportedModes Modes collection supported by IDE device
This function is used by the driver entity to obtain the optimum ATA modes for
a specific device. The IDE controller driver takes into account the following
while calculating the mode:
- The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
- The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()
The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
for all the devices that belong to an enumeration group before calling
EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
The IDE controller driver will use controller- and possibly platform-specific
algorithms to arrive at SupportedModes. The IDE controller may base its
decision on user preferences and other considerations as well. This function
may be called multiple times because the driver entity may renegotiate the mode
with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().
The driver entity may collect timing information for various devices in any
order. The driver entity is responsible for making sure that all the dependencies
are satisfied. For example, the SupportedModes information for device A that
was previously returned may become stale after a call to
EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.
The buffer SupportedModes is allocated by the callee because the caller does
not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
is defined in a way that allows for future extensibility and can be of variable
length. This memory pool should be deallocated by the caller when it is no
longer necessary.
The IDE controller driver for a Serial ATA (SATA) controller can use this
member function to force a lower speed (first-generation [Gen1] speeds on a
second-generation [Gen2]-capable hardware). The IDE controller driver can
also allow the driver entity to stay with the speed that has been negotiated
by the physical layer.
@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel A zero-based channel number.
@param[in] Device A zero-based device number on the Channel.
@param[out] SupportedModes The optimum modes for the device.
@retval EFI_SUCCESS SupportedModes was returned.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_INVALID_PARAMETER SupportedModes is NULL.
@retval EFI_NOT_READY Modes cannot be calculated due to a lack of
data. This error may happen if
EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
were not called for at least one drive in the
same enumeration group.
@retval EFI_OUT_OF_RESOURCES Fail to allocate pool.
@retval EFI_INVALID_PARAMETER Invalid channel id and device id.
**/
EFI_STATUS
EFIAPI
@ -224,15 +359,27 @@ IdeInitCalculateMode (
;
/**
This function is called by IdeBus driver to set appropriate timing on IDE
controller according supported operation mode.
Commands the IDE controller driver to program the IDE controller hardware
so that the specified device can operate at the specified mode.
@param This the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param Channel IDE channel number (0 based, either 0 or 1)
@param Device IDE device number
@param Modes IDE device modes
This function is used by the driver entity to instruct the IDE controller
driver to program the IDE controller hardware to the specified modes. This
function can be called only once for a particular device. For a Serial ATA
(SATA) Advanced Host Controller Interface (AHCI) controller, no controller-
specific programming may be required.
@param[in] This Pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
@param[in] Channel Zero-based channel number.
@param[in] Device Zero-based device number on the Channel.
@param[in] Modes The modes to set.
@retval EFI_SUCCESS The command was accepted without any errors.
@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
@retval EFI_INVALID_PARAMETER Device is invalid.
@retval EFI_NOT_READY Modes cannot be set at this time due to lack of data.
@retval EFI_DEVICE_ERROR Modes cannot be set due to hardware failure.
The driver entity should not use this device.
@retval EFI_SUCCESS Sucess operation.
**/
EFI_STATUS
EFIAPI