class TransferRequestProcessor

class TransferRequestProcessor

Defined at line 29 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

Owns and processes the UTP transfer request list.

Public Methods

zx::result<std::unique_ptr<TransferRequestProcessor>> Create (Ufs & ufs, zx::unowned_bti bti, const fdf::MmioView mmio, uint8_t entry_count)

Defined at line 31 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

void TransferRequestProcessor (RequestList request_list, Ufs & ufs, zx::unowned_bti bti, const fdf::MmioView mmio, uint32_t slot_count)

Defined at line 42 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

void ~TransferRequestProcessor ()

Defined at line 45 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

zx::result<> Init ()

Defined at line 72 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

template <class RequestType, class ResponseType>
zx::result<std::unique_ptr<ResponseType>> SendRequestUpiu (RequestType & request, uint8_t lun)

|SendRequestUpiu| allocates a slot for request UPIU and calls SendRequestUsingSlot.

This function is only ever used for admin commands.

Defined at line 73 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

template <class RequestType>
std::tuple<uint16_t, uint32_t> PreparePrdt (RequestType & request, uint8_t lun, uint8_t slot, const std::vector<zx_paddr_t> & buffer_phys, uint16_t response_offset, uint16_t response_length)

Defined at line 92 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

zx::result<uint8_t> ReserveAdminSlot ()

Allocate a slot to submit an Admin command. Use slot 31 to avoid conflicts with I/O commands.

Defined at line 99 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

uint32_t ProcessCompletionOfAdminRequests ()

Defined at line 395 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

uint32_t ProcessCompletionOfIoRequests ()

Defined at line 406 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

zx_time_t GetEarliestTimeoutDeadline ()

Find the earliest timeout deadline of the in-flight I/O.

Defined at line 422 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

zx::result<std::unique_ptr<ResponseUpiu>> SendScsiUpiuUsingSlot (ScsiCommandUpiu & request, uint8_t lun, uint8_t slot, std::optional<zx::unowned_vmo> data_vmo, IoCommand * io_cmd, bool is_sync)

Defined at line 109 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

zx::result<std::unique_ptr<ResponseUpiu>> SendScsiUpiu (ScsiCommandUpiu & request, uint8_t lun, std::optional<zx::unowned_vmo> data, IoCommand * io_cmd)

|SendScsiUpiu| allocates a slot for SCSI command UPIU and calls SendScsiUpiuUsingSlot.

If it is an admin command, the |io_cmd| is nullptr.

Defined at line 137 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

zx::result<std::unique_ptr<QueryResponseUpiu>> SendQueryRequestUpiu (QueryRequestUpiu & request)

This function is a wrapper function that sends a query request UPIU.

Defined at line 167 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

template <>
std::tuple<uint16_t, uint32_t> PreparePrdt<ufs::ScsiCommandUpiu> (ScsiCommandUpiu & request, uint8_t lun, uint8_t slot, const std::vector<zx_paddr_t> & buffer_phys, uint16_t response_offset, uint16_t response_length)

Defined at line 39 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

uint32_t GetInflightIoCount ()

Defined at line 109 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

template <class RequestType>
zx::result<void *> SendRequestUsingSlot (RequestType & request, uint8_t lun, uint8_t slot, std::optional<zx::unowned_vmo> data_vmo, IoCommand * io_cmd, bool is_sync)

Defined at line 181 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

Friends

class UfsTest