A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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Filename Latest commit message Latest commit date
Lihua Liu ddb8d72760 qcacld-3.0: Add workaround for TXDMA HW limitation 
Per HW team's analysis, we find a TXDMA HW limitation:
ADDR0&0x1FFFFFFF8 should not equal ADDR1&0x1FFFFFFF8.
Otherwise, TXDMA will run into exception, which cause TX fail.
ADDR0: the address of last words in previous buffer;
ADDR1: the address of first words in next buffer;

We hit this limitation in NAT forward TSO jumbo case whose buffer
address of two fragments like below:
tso_frags = (
(length = 0x42, vaddr = 0xFFFFFFD0F5FA2F82, paddr = 0x1F5FA2F82),
(length = 0x05A8, vaddr = 0xFFFFFFD0F5FA2FC4, paddr = 0x1F5FA2FC4)
In this case, ADDR0 = 0x1F5FA2F82 + 0x42 -2 = 0x1F5FA2FC2,
ADDR1 = 0x1F5FA2FC4, then
ADDR0&0x1FFFFFFF8 = ADDR1&0x1FFFFFFF8.
To avoid this, shift server bytes for ADDR0.

Change-Id: If9334a6861a03432eb70356df41a11ad971159e3
CRs-Fixed: 2641066
2020-03-30 10:03:33 -07:00
components
configs
core Release 5.2.0.178T 2020-03-30 06:10:18 -07:00
os_if
uapi/linux
Android.mk
Kbuild qcacld-3.0: Add workaround for TXDMA HW limitation 2020-03-30 10:03:33 -07:00
Kconfig
Makefile
README.txt

README.txt 

This is CNSS WLAN Host Driver for products starting from iHelium