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MdeModulePkg EhciDxe: Extract new EhciInsertAsyncIntTransfer function

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V3:
Match function parameter name and description between
EhciSched.c and EhciSched.h.

V2:
Add the missing "gBS->FreePool (Data);".

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1274

Extract new EhciInsertAsyncIntTransfer function from
EhcAsyncInterruptTransfer.

It is code preparation for following patch,
no essential functional change.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Hao Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>
This commit is contained in:
Star Zeng
2018-10-24 19:27:22 +08:00
parent 6681582dcc
commit 4f792685e4
3 changed files with 111 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
MdeModulePkg/Bus/Pci/EhciDxe/EhciSched.c
View File

@@ -814,6 +814,82 @@ EhciDelAllAsyncIntTransfers (
}
}
/**
Insert a single asynchronous interrupt transfer for
the device and endpoint.
@param Ehc The EHCI device.
@param DevAddr The device address.
@param EpAddr Endpoint addrress & its direction.
@param DevSpeed The device speed.
@param Toggle Initial data toggle to use.
@param MaxPacket The max packet length of the endpoint.
@param Hub The transaction translator to use.
@param DataLen The length of data buffer.
@param Callback The function to call when data is transferred.
@param Context The context to the callback.
@param Interval The interval for interrupt transfer.
@return Created URB or NULL.
**/
URB *
EhciInsertAsyncIntTransfer (
IN USB2_HC_DEV *Ehc,
IN UINT8 DevAddr,
IN UINT8 EpAddr,
IN UINT8 DevSpeed,
IN UINT8 Toggle,
IN UINTN MaxPacket,
IN EFI_USB2_HC_TRANSACTION_TRANSLATOR *Hub,
IN UINTN DataLen,
IN EFI_ASYNC_USB_TRANSFER_CALLBACK Callback,
IN VOID *Context,
IN UINTN Interval
)
{
VOID *Data;
URB *Urb;
Data = AllocatePool (DataLen);
if (Data == NULL) {
DEBUG ((DEBUG_ERROR, "%a: failed to allocate buffer\n", __FUNCTION__));
return NULL;
}
Urb = EhcCreateUrb (
Ehc,
DevAddr,
EpAddr,
DevSpeed,
Toggle,
MaxPacket,
Hub,
EHC_INT_TRANSFER_ASYNC,
NULL,
Data,
DataLen,
Callback,
Context,
Interval
);
if (Urb == NULL) {
DEBUG ((DEBUG_ERROR, "%a: failed to create URB\n", __FUNCTION__));
gBS->FreePool (Data);
return NULL;
}
//
// New asynchronous transfer must inserted to the head.
// Check the comments in EhcMoniteAsyncRequests
//
EhcLinkQhToPeriod (Ehc, Urb->Qh);
InsertHeadList (&Ehc->AsyncIntTransfers, &Urb->UrbList);
return Urb;
}
/**
Flush data from PCI controller specific address to mapped system