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MdeModulePkg UfsPassThruDxe: Add Non-blocking I/O Support

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Previously, UfsPassThruPassThru function does not handle the 'Event'
parameter and blocking read/write operations are always executed.

This commit enables non-blocking read/write feature for UFS devices.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Feng Tian <feng.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19216 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Hao Wu
2015-12-11 01:58:45 +00:00
committed by hwu1225
parent d670bf5336
commit 0350b57cf7
3 changed files with 393 additions and 40 deletions
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75
MdeModulePkg/Bus/Ufs/UfsPassThruDxe/UfsPassThru.h
View File

@@ -50,6 +50,14 @@ typedef struct {
UINT16 Rsvd:4;
} UFS_EXPOSED_LUNS;
//
// Iterate through the doule linked list. This is delete-safe.
// Do not touch NextEntry
//
#define EFI_LIST_FOR_EACH_SAFE(Entry, NextEntry, ListHead) \
for(Entry = (ListHead)->ForwardLink, NextEntry = Entry->ForwardLink;\
Entry != (ListHead); Entry = NextEntry, NextEntry = Entry->ForwardLink)
typedef struct _UFS_PASS_THRU_PRIVATE_DATA {
UINT32 Signature;
EFI_HANDLE Handle;
@@ -69,9 +77,37 @@ typedef struct _UFS_PASS_THRU_PRIVATE_DATA {
VOID *TmrlMapping;
UFS_EXPOSED_LUNS Luns;
//
// For Non-blocking operation.
//
EFI_EVENT TimerEvent;
LIST_ENTRY Queue;
} UFS_PASS_THRU_PRIVATE_DATA;
#define UFS_PASS_THRU_TRANS_REQ_SIG SIGNATURE_32 ('U', 'F', 'S', 'T')
typedef struct {
UINT32 Signature;
LIST_ENTRY TransferList;
UINT8 Slot;
UTP_TRD *Trd;
UINT32 CmdDescSize;
VOID *CmdDescHost;
VOID *CmdDescMapping;
VOID *DataBufMapping;
EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet;
UINT64 TimeoutRemain;
EFI_EVENT CallerEvent;
} UFS_PASS_THRU_TRANS_REQ;
#define UFS_PASS_THRU_TRANS_REQ_FROM_THIS(a) \
CR(a, UFS_PASS_THRU_TRANS_REQ, TransferList, UFS_PASS_THRU_TRANS_REQ_SIG)
#define UFS_TIMEOUT EFI_TIMER_PERIOD_SECONDS(3)
#define UFS_HC_ASYNC_TIMER EFI_TIMER_PERIOD_MILLISECONDS(1)
#define ROUNDUP8(x) (((x) % 8 == 0) ? (x) : ((x) / 8 + 1) * 8)
@@ -587,6 +623,11 @@ UfsPassThruGetNextTarget (
@param[in] Lun The LUN of the UFS device to send the SCSI Request Packet.
@param[in, out] Packet A pointer to the SCSI Request Packet to send to a specified Lun of the
UFS device.
@param[in] Event If nonblocking I/O is not supported then Event is ignored, and blocking
I/O is performed. If Event is NULL, then blocking I/O is performed. If
Event is not NULL and non blocking I/O is supported, then
nonblocking I/O is performed, and Event will be signaled when the
SCSI Request Packet completes.
@retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For bi-directional
commands, InTransferLength bytes were transferred from
@@ -603,7 +644,8 @@ EFI_STATUS
UfsExecScsiCmds (
IN UFS_PASS_THRU_PRIVATE_DATA *Private,
IN UINT8 Lun,
IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet
IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
);
/**
@@ -719,6 +761,37 @@ UfsExecNopCmds (
IN UFS_PASS_THRU_PRIVATE_DATA *Private
);
/**
Call back function when the timer event is signaled.
@param[in] Event The Event this notify function registered to.
@param[in] Context Pointer to the context data registered to the Event.
**/
VOID
EFIAPI
ProcessAsyncTaskList (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Internal helper function which will signal the caller event and clean up
resources.
@param[in] Private The pointer to the UFS_PASS_THRU_PRIVATE_DATA data
structure.
@param[in] TransReq The pointer to the UFS_PASS_THRU_TRANS_REQ data
structure.
**/
VOID
EFIAPI
SignalCallerEvent (
IN UFS_PASS_THRU_PRIVATE_DATA *Private,
IN UFS_PASS_THRU_TRANS_REQ *TransReq
);
extern EFI_COMPONENT_NAME_PROTOCOL gUfsPassThruComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gUfsPassThruComponentName2;
extern EFI_DRIVER_BINDING_PROTOCOL gUfsPassThruDriverBinding;