class TransferRequestProcessor

Defined at line 36 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 38 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 49 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

void ~TransferRequestProcessor ()

Defined at line 52 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

bool CheckAdminCommandCompleted (uint32_t doorbell)

Defined at line 62 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

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 509 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

uint32_t ProcessCompletionOfIoRequests ()

Defined at line 527 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 562 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

zx::result<std::unique_ptr<ResponseUpiu>> SendAdminScsiCmd (ScsiCommandUpiu & request, uint8_t lun, zx::unowned_vmo data_vmo)

|SendAdminScsiCmd| allocates the admin slot for a SCSI command and calls SendRequestUsingSlot.

Blocks until completion and returns the result.

Defined at line 111 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

void SendIoScsiCmd (ScsiCommandUpiu & request, uint8_t lun, uint8_t slot, zx::unowned_vmo data_vmo, uint64_t dma_offset, uint64_t dma_length, fit::callback<void (zx_status_t)> completion_cb, block_server::internal::InlineCryptoOptions inline_crypto)

|SendIoScsiCmd| sends an asynchronous SCSI command using a previously reserved I/O slot.

The |completion_cb| is guaranteed to be invoked, and the |slot| will be automatically

released, regardless of whether the request is successfully submitted or fails early.

Defined at line 124 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 194 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 40 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

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 95 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

uint32_t GetInflightIoCount ()

Defined at line 117 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.h

template <class RequestType, class ResponseType>

zx::result<std::unique_ptr<ResponseType>> SendRequestUpiu (RequestType & request, uint8_t lun, zx::unowned_vmo data_vmo, uint64_t dma_offset, uint64_t dma_length)

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

This function is only ever used for admin commands.

Defined at line 133 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

template <class RequestType>

void SendRequestUsingSlot (RequestType & request, uint8_t lun, uint8_t slot, zx::unowned_vmo data_vmo, uint64_t dma_offset, uint64_t dma_length, fit::callback<void (zx_status_t)> completion_cb, block_server::internal::InlineCryptoOptions inline_crypto)

Low-level helper that sets up descriptor and PRDT buffers for a reserved slot, pins data VMO,

and rings the doorbell. Invokes |completion_cb| when the hardware request completes, or

immediately with an error status if slot preparation fails.

Defined at line 208 of file ../../src/devices/block/drivers/ufs/transfer_request_processor.cc

Friends

class UfsTest