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259 lines
11 KiB
C
259 lines
11 KiB
C
/** @file
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The EFI_SD_MMC_PASS_THRU_PROTOCOL provides the ability to send SD/MMC Commands
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to any SD/MMC device attached to the SD compatible pci host controller.
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Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef __SD_MMC_PASS_THRU_H__
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#define __SD_MMC_PASS_THRU_H__
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#define EFI_SD_MMC_PASS_THRU_PROTOCOL_GUID \
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{ \
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0x716ef0d9, 0xff83, 0x4f69, {0x81, 0xe9, 0x51, 0x8b, 0xd3, 0x9a, 0x8e, 0x70 } \
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}
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typedef struct _EFI_SD_MMC_PASS_THRU_PROTOCOL EFI_SD_MMC_PASS_THRU_PROTOCOL;
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typedef enum {
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SdMmcCommandTypeBc, // Broadcast commands, no response
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SdMmcCommandTypeBcr, // Broadcast commands with response
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SdMmcCommandTypeAc, // Addressed(point-to-point) commands
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SdMmcCommandTypeAdtc // Addressed(point-to-point) data transfer commands
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} EFI_SD_MMC_COMMAND_TYPE;
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typedef enum {
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SdMmcResponseTypeR1,
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SdMmcResponseTypeR1b,
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SdMmcResponseTypeR2,
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SdMmcResponseTypeR3,
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SdMmcResponseTypeR4,
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SdMmcResponseTypeR5,
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SdMmcResponseTypeR5b,
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SdMmcResponseTypeR6,
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SdMmcResponseTypeR7
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} EFI_SD_MMC_RESPONSE_TYPE;
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typedef struct _EFI_SD_MMC_COMMAND_BLOCK {
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UINT16 CommandIndex;
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UINT32 CommandArgument;
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UINT32 CommandType; // One of the EFI_SD_MMC_COMMAND_TYPE values
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UINT32 ResponseType; // One of the EFI_SD_MMC_RESPONSE_TYPE values
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} EFI_SD_MMC_COMMAND_BLOCK;
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typedef struct _EFI_SD_MMC_STATUS_BLOCK {
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UINT32 Resp0;
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UINT32 Resp1;
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UINT32 Resp2;
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UINT32 Resp3;
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} EFI_SD_MMC_STATUS_BLOCK;
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typedef struct _EFI_SD_MMC_PASS_THRU_COMMAND_PACKET {
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UINT64 Timeout;
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EFI_SD_MMC_COMMAND_BLOCK *SdMmcCmdBlk;
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EFI_SD_MMC_STATUS_BLOCK *SdMmcStatusBlk;
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VOID *InDataBuffer;
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VOID *OutDataBuffer;
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UINT32 InTransferLength;
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UINT32 OutTransferLength;
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EFI_STATUS TransactionStatus;
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} EFI_SD_MMC_PASS_THRU_COMMAND_PACKET;
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/**
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Sends SD command to an SD card that is attached to the SD controller.
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The PassThru() function sends the SD command specified by Packet to the SD card
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specified by Slot.
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If Packet is successfully sent to the SD card, then EFI_SUCCESS is returned.
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If a device error occurs while sending the Packet, then EFI_DEVICE_ERROR is returned.
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If Slot is not in a valid range for the SD controller, then EFI_INVALID_PARAMETER
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is returned.
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If Packet defines a data command but both InDataBuffer and OutDataBuffer are NULL,
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EFI_INVALID_PARAMETER is returned.
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@param[in] This A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot The slot number of the SD card to send the command to.
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@param[in,out] Packet A pointer to the SD command data structure.
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@param[in] Event If Event is NULL, blocking I/O is performed. If Event is
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not NULL, then nonblocking I/O is performed, and Event
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will be signaled when the Packet completes.
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@retval EFI_SUCCESS The SD Command Packet was sent by the host.
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@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the SD
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command Packet.
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@retval EFI_INVALID_PARAMETER Packet, Slot, or the contents of the Packet is invalid.
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@retval EFI_INVALID_PARAMETER Packet defines a data command but both InDataBuffer and
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OutDataBuffer are NULL.
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@retval EFI_NO_MEDIA SD Device not present in the Slot.
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@retval EFI_UNSUPPORTED The command described by the SD Command Packet is not
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supported by the host controller.
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@retval EFI_BAD_BUFFER_SIZE The InTransferLength or OutTransferLength exceeds the
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limit supported by SD card ( i.e. if the number of bytes
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exceed the Last LBA).
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SD_MMC_PASS_THRU_PASSTHRU) (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *This,
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IN UINT8 Slot,
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IN OUT EFI_SD_MMC_PASS_THRU_COMMAND_PACKET *Packet,
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IN EFI_EVENT Event OPTIONAL
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);
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/**
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Used to retrieve next slot numbers supported by the SD controller. The function
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returns information about all available slots (populated or not-populated).
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The GetNextSlot() function retrieves the next slot number on an SD controller.
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If on input Slot is 0xFF, then the slot number of the first slot on the SD controller
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is returned.
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If Slot is a slot number that was returned on a previous call to GetNextSlot(), then
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the slot number of the next slot on the SD controller is returned.
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If Slot is not 0xFF and Slot was not returned on a previous call to GetNextSlot(),
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EFI_INVALID_PARAMETER is returned.
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If Slot is the slot number of the last slot on the SD controller, then EFI_NOT_FOUND
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is returned.
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@param[in] This A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
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@param[in,out] Slot On input, a pointer to a slot number on the SD controller.
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On output, a pointer to the next slot number on the SD controller.
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An input value of 0xFF retrieves the first slot number on the SD
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controller.
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@retval EFI_SUCCESS The next slot number on the SD controller was returned in Slot.
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@retval EFI_NOT_FOUND There are no more slots on this SD controller.
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@retval EFI_INVALID_PARAMETER Slot is not 0xFF and Slot was not returned on a previous call
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to GetNextSlot().
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SD_MMC_PASS_THRU_GET_NEXT_SLOT) (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *This,
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IN OUT UINT8 *Slot
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);
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/**
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Used to allocate and build a device path node for an SD card on the SD controller.
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The BuildDevicePath() function allocates and builds a single device node for the SD
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card specified by Slot.
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If the SD card specified by Slot is not present on the SD controller, then EFI_NOT_FOUND
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is returned.
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If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned.
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If there are not enough resources to allocate the device path node, then EFI_OUT_OF_RESOURCES
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is returned.
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Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of
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DevicePath are initialized to describe the SD card specified by Slot, and EFI_SUCCESS is
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returned.
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@param[in] This A pointer to the EFI_SD_MMMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot Specifies the slot number of the SD card for which a device
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path node is to be allocated and built.
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@param[in,out] DevicePath A pointer to a single device path node that describes the SD
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card specified by Slot. This function is responsible for
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allocating the buffer DevicePath with the boot service
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AllocatePool(). It is the caller's responsibility to free
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DevicePath when the caller is finished with DevicePath.
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@retval EFI_SUCCESS The device path node that describes the SD card specified by
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Slot was allocated and returned in DevicePath.
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@retval EFI_NOT_FOUND The SD card specified by Slot does not exist on the SD controller.
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@retval EFI_INVALID_PARAMETER DevicePath is NULL.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SD_MMC_PASS_THRU_BUILD_DEVICE_PATH) (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *This,
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IN UINT8 Slot,
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IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
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);
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/**
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This function retrieves an SD card slot number based on the input device path.
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The GetSlotNumber() function retrieves slot number for the SD card specified by
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the DevicePath node. If DevicePath is NULL, EFI_INVALID_PARAMETER is returned.
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If DevicePath is not a device path node type that the SD Pass Thru driver supports,
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EFI_UNSUPPORTED is returned.
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@param[in] This A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] DevicePath A pointer to the device path node that describes a SD
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card on the SD controller.
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@param[out] Slot On return, points to the slot number of an SD card on
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the SD controller.
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@retval EFI_SUCCESS SD card slot number is returned in Slot.
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@retval EFI_INVALID_PARAMETER Slot or DevicePath is NULL.
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@retval EFI_UNSUPPORTED DevicePath is not a device path node type that the SD
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Pass Thru driver supports.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SD_MMC_PASS_THRU_GET_SLOT_NUMBER) (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *This,
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IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
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OUT UINT8 *Slot
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);
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/**
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Resets an SD card that is connected to the SD controller.
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The ResetDevice() function resets the SD card specified by Slot.
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If this SD controller does not support a device reset operation, EFI_UNSUPPORTED is
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returned.
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If Slot is not in a valid slot number for this SD controller, EFI_INVALID_PARAMETER
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is returned.
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If the device reset operation is completed, EFI_SUCCESS is returned.
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@param[in] This A pointer to the EFI_SD_MMC_PASS_THRU_PROTOCOL instance.
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@param[in] Slot Specifies the slot number of the SD card to be reset.
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@retval EFI_SUCCESS The SD card specified by Slot was reset.
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@retval EFI_UNSUPPORTED The SD controller does not support a device reset operation.
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@retval EFI_INVALID_PARAMETER Slot number is invalid.
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@retval EFI_NO_MEDIA SD Device not present in the Slot.
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@retval EFI_DEVICE_ERROR The reset command failed due to a device error
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_SD_MMC_PASS_THRU_RESET_DEVICE) (
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IN EFI_SD_MMC_PASS_THRU_PROTOCOL *This,
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IN UINT8 Slot
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);
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struct _EFI_SD_MMC_PASS_THRU_PROTOCOL {
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UINT32 IoAlign;
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EFI_SD_MMC_PASS_THRU_PASSTHRU PassThru;
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EFI_SD_MMC_PASS_THRU_GET_NEXT_SLOT GetNextSlot;
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EFI_SD_MMC_PASS_THRU_BUILD_DEVICE_PATH BuildDevicePath;
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EFI_SD_MMC_PASS_THRU_GET_SLOT_NUMBER GetSlotNumber;
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EFI_SD_MMC_PASS_THRU_RESET_DEVICE ResetDevice;
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};
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extern EFI_GUID gEfiSdMmcPassThruProtocolGuid;
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#endif
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