* [PATCH v1 0/1] MdeModulePkg:Avoid Xhc cross 64K boundary
@ 2022-03-03 3:35 zhoucheng
2022-03-03 3:35 ` [PATCH v1 1/1] " zhoucheng
0 siblings, 1 reply; 2+ messages in thread
From: zhoucheng @ 2022-03-03 3:35 UTC (permalink / raw)
To: devel; +Cc: Ray Ni, Liming Gao, Wang Jian J
The current xhc implementation may exceed the 64K boundary,
so must restrictions need to be added.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Wang Jian J <jian.j.wang@intel.com>
Reviewed-by: Wu Hao A <hao.a.wu@intel.com>
Signed-off-by: Cheng Zhou <zhoucheng@phytium.com.cn>
zhoucheng (1):
MdeModulePkg:Avoid Xhc cross 64K boundary
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 6 ++++++
1 file changed, 6 insertions(+)
--
2.17.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH v1 1/1] MdeModulePkg:Avoid Xhc cross 64K boundary
2022-03-03 3:35 [PATCH v1 0/1] MdeModulePkg:Avoid Xhc cross 64K boundary zhoucheng
@ 2022-03-03 3:35 ` zhoucheng
0 siblings, 0 replies; 2+ messages in thread
From: zhoucheng @ 2022-03-03 3:35 UTC (permalink / raw)
To: devel; +Cc: Ray Ni, Liming Gao, Wang Jian J
The current xhc implementation may exceed the 64K boundary,
so must restrictions need to be added.
Cc: Ray Ni <ray.ni@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Wang Jian J <jian.j.wang@intel.com>
Reviewed-by: Wu Hao A <hao.a.wu@intel.com>
Signed-off-by: Cheng Zhou <zhoucheng@phytium.com.cn>
---
MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
index c2906e06fd84..0fedc8cfced5 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/XhciSched.c
@@ -891,8 +891,14 @@ CreateTransferRing (
VOID *Buf;
LINK_TRB *EndTrb;
EFI_PHYSICAL_ADDRESS PhyAddr;
+ VOID *NewBuf;
Buf = UsbHcAllocateMem (Xhc->MemPool, sizeof (TRB_TEMPLATE) * TrbNum);
+ if((((UINTN)Buf & ((1<<16)-1)) + sizeof (TRB_TEMPLATE) * TrbNum) & (1<<16)) {
+ NewBuf = UsbHcAllocateMem (Xhc->MemPool,sizeof(TRB_TEMPLATE) * TrbNum);
+ UsbHcFreeMem(Xhc->MemPool,Buf,sizeof(TRB_TEMPLATE)*TrbNum);
+ Buf = NewBuf;
+ }
ASSERT (Buf != NULL);
ASSERT (((UINTN)Buf & 0x3F) == 0);
ZeroMem (Buf, sizeof (TRB_TEMPLATE) * TrbNum);
--
2.17.1
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