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@@ -39,7 +39,7 @@ AhciReadReg (
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UINT32 Data;
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ASSERT (PciIo != NULL);
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-
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+
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Data = 0;
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PciIo->Mem.Read (
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@@ -265,9 +265,9 @@ CalculateBestUdmaMode (
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/**
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The Entry Point of module. It follows the standard UEFI driver model.
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- @param[in] ImageHandle The firmware allocated handle for the EFI image.
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+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
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@param[in] SystemTable A pointer to the EFI System Table.
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-
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+
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@retval EFI_SUCCESS The entry point is executed successfully.
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@retval other Some error occurs when executing this entry point.
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@@ -361,7 +361,7 @@ SataControllerSupported (
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}
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/**
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- This routine is called right after the .Supported() called and
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+ This routine is called right after the .Supported() called and
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Start this driver on ControllerHandle.
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@param This Protocol instance pointer.
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@@ -680,34 +680,34 @@ FlatDeviceIndex (
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//
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/**
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Returns the information about the specified IDE channel.
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-
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+
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This function can be used to obtain information about a particular IDE channel.
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- The driver entity uses this information during the enumeration process.
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-
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- If Enabled is set to FALSE, the driver entity will not scan the channel. Note
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+ The driver entity uses this information during the enumeration process.
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+
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+ If Enabled is set to FALSE, the driver entity will not scan the channel. Note
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that it will not prevent an operating system driver from scanning the channel.
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-
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- For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
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- controllers, this value will always be 1. SATA configurations can contain SATA
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+
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+ For most of today's controllers, MaxDevices will either be 1 or 2. For SATA
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+ controllers, this value will always be 1. SATA configurations can contain SATA
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port multipliers. SATA port multipliers behave like SATA bridges and can support
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- up to 16 devices on the other side. If a SATA port out of the IDE controller
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- is connected to a port multiplier, MaxDevices will be set to the number of SATA
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- devices that the port multiplier supports. Because today's port multipliers
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- support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
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- bus driver is required to scan for the presence of port multipliers behind an SATA
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- controller and enumerate up to MaxDevices number of devices behind the port
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- multiplier.
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-
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- In this context, the devices behind a port multiplier constitute a channel.
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-
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+ up to 16 devices on the other side. If a SATA port out of the IDE controller
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+ is connected to a port multiplier, MaxDevices will be set to the number of SATA
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+ devices that the port multiplier supports. Because today's port multipliers
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+ support up to fifteen SATA devices, this number can be as large as fifteen. The IDE
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+ bus driver is required to scan for the presence of port multipliers behind an SATA
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+ controller and enumerate up to MaxDevices number of devices behind the port
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+ multiplier.
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+
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+ In this context, the devices behind a port multiplier constitute a channel.
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+
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@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
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@param[in] Channel Zero-based channel number.
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- @param[out] Enabled TRUE if this channel is enabled. Disabled channels
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+ @param[out] Enabled TRUE if this channel is enabled. Disabled channels
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are not scanned to see if any devices are present.
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@param[out] MaxDevices The maximum number of IDE devices that the bus driver
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- can expect on this channel. For the ATA/ATAPI
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- specification, version 6, this number will either be
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- one or two. For Serial ATA (SATA) configurations with a
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+ can expect on this channel. For the ATA/ATAPI
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+ specification, version 6, this number will either be
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+ one or two. For Serial ATA (SATA) configurations with a
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port multiplier, this number can be as large as fifteen.
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@retval EFI_SUCCESS Information was returned without any errors.
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@@ -740,13 +740,13 @@ IdeInitGetChannelInfo (
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/**
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The notifications from the driver entity that it is about to enter a certain
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phase of the IDE channel enumeration process.
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-
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- This function can be used to notify the IDE controller driver to perform
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- specific actions, including any chipset-specific initialization, so that the
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- chipset is ready to enter the next phase. Seven notification points are defined
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- at this time.
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-
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- More synchronization points may be added as required in the future.
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+
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+ This function can be used to notify the IDE controller driver to perform
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+ specific actions, including any chipset-specific initialization, so that the
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+ chipset is ready to enter the next phase. Seven notification points are defined
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+ at this time.
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+
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+ More synchronization points may be added as required in the future.
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@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
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@param[in] Phase The phase during enumeration.
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@@ -755,9 +755,9 @@ IdeInitGetChannelInfo (
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@retval EFI_SUCCESS The notification was accepted without any errors.
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@retval EFI_UNSUPPORTED Phase is not supported.
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@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
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- @retval EFI_NOT_READY This phase cannot be entered at this time; for
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- example, an attempt was made to enter a Phase
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- without having entered one or more previous
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+ @retval EFI_NOT_READY This phase cannot be entered at this time; for
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+ example, an attempt was made to enter a Phase
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+ without having entered one or more previous
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Phase.
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**/
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@@ -775,32 +775,32 @@ IdeInitNotifyPhase (
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/**
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Submits the device information to the IDE controller driver.
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- This function is used by the driver entity to pass detailed information about
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- a particular device to the IDE controller driver. The driver entity obtains
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+ This function is used by the driver entity to pass detailed information about
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+ a particular device to the IDE controller driver. The driver entity obtains
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this information by issuing an ATA or ATAPI IDENTIFY_DEVICE command. IdentifyData
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- is the pointer to the response data buffer. The IdentifyData buffer is owned
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- by the driver entity, and the IDE controller driver must make a local copy
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- of the entire buffer or parts of the buffer as needed. The original IdentifyData
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+ is the pointer to the response data buffer. The IdentifyData buffer is owned
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+ by the driver entity, and the IDE controller driver must make a local copy
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+ of the entire buffer or parts of the buffer as needed. The original IdentifyData
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buffer pointer may not be valid when
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-
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+
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- EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() or
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- EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() is called at a later point.
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-
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- The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
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- compute the optimum mode for the device. These fields are not limited to the
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- timing information. For example, an implementation of the IDE controller driver
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- may examine the vendor and type/mode field to match known bad drives.
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-
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- The driver entity may submit drive information in any order, as long as it
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- submits information for all the devices belonging to the enumeration group
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+
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+ The IDE controller driver may consult various fields of EFI_IDENTIFY_DATA to
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+ compute the optimum mode for the device. These fields are not limited to the
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+ timing information. For example, an implementation of the IDE controller driver
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+ may examine the vendor and type/mode field to match known bad drives.
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+
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+ The driver entity may submit drive information in any order, as long as it
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+ submits information for all the devices belonging to the enumeration group
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before EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() is called for any device
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in that enumeration group. If a device is absent, EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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- should be called with IdentifyData set to NULL. The IDE controller driver may
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- not have any other mechanism to know whether a device is present or not. Therefore,
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- setting IdentifyData to NULL does not constitute an error condition.
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- EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
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- given (Channel, Device) pair.
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-
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+ should be called with IdentifyData set to NULL. The IDE controller driver may
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+ not have any other mechanism to know whether a device is present or not. Therefore,
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+ setting IdentifyData to NULL does not constitute an error condition.
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+ EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData() can be called only once for a
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+ given (Channel, Device) pair.
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+
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@param[in] This A pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
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@param[in] Channel Zero-based channel number.
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@param[in] Device Zero-based device number on the Channel.
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@@ -853,31 +853,31 @@ IdeInitSubmitData (
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/**
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Disqualifies specific modes for an IDE device.
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- This function allows the driver entity or other drivers (such as platform
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+ This function allows the driver entity or other drivers (such as platform
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drivers) to reject certain timing modes and request the IDE controller driver
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- to recalculate modes. This function allows the driver entity and the IDE
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- controller driver to negotiate the timings on a per-device basis. This function
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- is useful in the case of drives that lie about their capabilities. An example
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- is when the IDE device fails to accept the timing modes that are calculated
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+ to recalculate modes. This function allows the driver entity and the IDE
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+ controller driver to negotiate the timings on a per-device basis. This function
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+ is useful in the case of drives that lie about their capabilities. An example
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+ is when the IDE device fails to accept the timing modes that are calculated
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by the IDE controller driver based on the response to the Identify Drive command.
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- If the driver entity does not want to limit the ATA timing modes and leave that
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- decision to the IDE controller driver, it can either not call this function for
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- the given device or call this function and set the Valid flag to FALSE for all
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+ If the driver entity does not want to limit the ATA timing modes and leave that
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+ decision to the IDE controller driver, it can either not call this function for
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+ the given device or call this function and set the Valid flag to FALSE for all
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modes that are listed in EFI_ATA_COLLECTIVE_MODE.
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-
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- The driver entity may disqualify modes for a device in any order and any number
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+
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+ The driver entity may disqualify modes for a device in any order and any number
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of times.
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-
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- This function can be called multiple times to invalidate multiple modes of the
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- same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
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- specification for more information on PIO modes.
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-
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+
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+ This function can be called multiple times to invalidate multiple modes of the
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+ same type (e.g., Programmed Input/Output [PIO] modes 3 and 4). See the ATA/ATAPI
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+ specification for more information on PIO modes.
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+
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For Serial ATA (SATA) controllers, this member function can be used to disqualify
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a higher transfer rate mode on a given channel. For example, a platform driver
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- may inform the IDE controller driver to not use second-generation (Gen2) speeds
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+ may inform the IDE controller driver to not use second-generation (Gen2) speeds
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for a certain SATA drive.
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-
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+
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@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
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@param[in] Channel The zero-based channel number.
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@param[in] Device The zero-based device number on the Channel.
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@@ -888,7 +888,7 @@ IdeInitSubmitData (
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@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
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@retval EFI_INVALID_PARAMETER Device is invalid.
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@retval EFI_INVALID_PARAMETER IdentifyData is NULL.
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-
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+
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**/
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EFI_STATUS
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EFIAPI
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@@ -928,39 +928,39 @@ IdeInitDisqualifyMode (
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Returns the information about the optimum modes for the specified IDE device.
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This function is used by the driver entity to obtain the optimum ATA modes for
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- a specific device. The IDE controller driver takes into account the following
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+ a specific device. The IDE controller driver takes into account the following
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while calculating the mode:
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- The IdentifyData inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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- The BadModes inputs to EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode()
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- The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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- for all the devices that belong to an enumeration group before calling
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- EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
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-
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- The IDE controller driver will use controller- and possibly platform-specific
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- algorithms to arrive at SupportedModes. The IDE controller may base its
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- decision on user preferences and other considerations as well. This function
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- may be called multiple times because the driver entity may renegotiate the mode
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+ The driver entity is required to call EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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+ for all the devices that belong to an enumeration group before calling
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+ EFI_IDE_CONTROLLER_INIT_PROTOCOL.CalculateMode() for any device in the same group.
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+
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+ The IDE controller driver will use controller- and possibly platform-specific
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+ algorithms to arrive at SupportedModes. The IDE controller may base its
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+ decision on user preferences and other considerations as well. This function
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+ may be called multiple times because the driver entity may renegotiate the mode
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with the IDE controller driver using EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode().
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-
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- The driver entity may collect timing information for various devices in any
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+
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+ The driver entity may collect timing information for various devices in any
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order. The driver entity is responsible for making sure that all the dependencies
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- are satisfied. For example, the SupportedModes information for device A that
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- was previously returned may become stale after a call to
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+ are satisfied. For example, the SupportedModes information for device A that
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+ was previously returned may become stale after a call to
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EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyMode() for device B.
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-
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- The buffer SupportedModes is allocated by the callee because the caller does
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- not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
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- is defined in a way that allows for future extensibility and can be of variable
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- length. This memory pool should be deallocated by the caller when it is no
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- longer necessary.
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-
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- The IDE controller driver for a Serial ATA (SATA) controller can use this
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- member function to force a lower speed (first-generation [Gen1] speeds on a
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- second-generation [Gen2]-capable hardware). The IDE controller driver can
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- also allow the driver entity to stay with the speed that has been negotiated
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+
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+ The buffer SupportedModes is allocated by the callee because the caller does
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+ not necessarily know the size of the buffer. The type EFI_ATA_COLLECTIVE_MODE
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+ is defined in a way that allows for future extensibility and can be of variable
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+ length. This memory pool should be deallocated by the caller when it is no
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+ longer necessary.
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+
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+ The IDE controller driver for a Serial ATA (SATA) controller can use this
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+ member function to force a lower speed (first-generation [Gen1] speeds on a
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+ second-generation [Gen2]-capable hardware). The IDE controller driver can
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+ also allow the driver entity to stay with the speed that has been negotiated
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by the physical layer.
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-
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+
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@param[in] This The pointer to the EFI_IDE_CONTROLLER_INIT_PROTOCOL instance.
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@param[in] Channel A zero-based channel number.
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@param[in] Device A zero-based device number on the Channel.
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@@ -968,13 +968,13 @@ IdeInitDisqualifyMode (
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@retval EFI_SUCCESS SupportedModes was returned.
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@retval EFI_INVALID_PARAMETER Channel is invalid (Channel >= ChannelCount).
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- @retval EFI_INVALID_PARAMETER Device is invalid.
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+ @retval EFI_INVALID_PARAMETER Device is invalid.
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@retval EFI_INVALID_PARAMETER SupportedModes is NULL.
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- @retval EFI_NOT_READY Modes cannot be calculated due to a lack of
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- data. This error may happen if
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- EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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- and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
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- were not called for at least one drive in the
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+ @retval EFI_NOT_READY Modes cannot be calculated due to a lack of
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+ data. This error may happen if
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+ EFI_IDE_CONTROLLER_INIT_PROTOCOL.SubmitData()
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+ and EFI_IDE_CONTROLLER_INIT_PROTOCOL.DisqualifyData()
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+ were not called for at least one drive in the
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same enumeration group.
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**/
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@@ -1061,9 +1061,9 @@ IdeInitCalculateMode (
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Commands the IDE controller driver to program the IDE controller hardware
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so that the specified device can operate at the specified mode.
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- This function is used by the driver entity to instruct the IDE controller
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- driver to program the IDE controller hardware to the specified modes. This
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- function can be called only once for a particular device. For a Serial ATA
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+ This function is used by the driver entity to instruct the IDE controller
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+ driver to program the IDE controller hardware to the specified modes. This
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+ function can be called only once for a particular device. For a Serial ATA
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(SATA) Advanced Host Controller Interface (AHCI) controller, no controller-
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specific programming may be required.
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