Nishanth Menon 860d9b717f mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0 ... [ Upstream commit 1b712f18c4 ] Sec proxy/message manager data buffer is 60 bytes with the last of the registers indicating transmission completion. This however poses a bit of a challenge. The backing memory for sec_proxy / message manager is regular memory, and all sec proxy does is to trigger a burst of all 60 bytes of data over to the target thread backing ring accelerator. It doesn't do a memory scrub when it moves data out in the burst. When we transmit multiple messages, remnants of previous message is also transmitted which results in some random data being set in TISCI fields of messages that have been expanded forward. The entire concept of backward compatibility hinges on the fact that the unused message fields remain 0x0 allowing for 0x0 value to be specially considered when backward compatibility of message extension is done. So, instead of just writing the completion register, we continue to fill the message buffer up with 0x0 (note: for partial message involving completion, we already do this). This allows us to scale and introduce ABI changes back also work with other boot stages that may have left data in the internal memory. While at this, be consistent and explicit with the data_reg pointer increment. Fixes: aace66b170 ("mailbox: Introduce TI message manager driver") Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-27 08:37:23 +02:00
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arm_mhu.c
armada-37xx-rwtm-mailbox.c
bcm2835-mailbox.c
bcm-flexrm-mailbox.c	mailbox: bcm-ferxrm-mailbox: Fix error check for dma_map_sg	2022-10-26 13:22:44 +02:00
bcm-pdc-mailbox.c
hi3660-mailbox.c
hi6220-mailbox.c
imx-mailbox.c
Kconfig
mailbox-altera.c
mailbox-sti.c
mailbox-test.c	mailbox: mailbox-test: fix a locking issue in mbox_test_message_write()	2023-06-09 10:28:59 +02:00
mailbox-xgene-slimpro.c
mailbox.c	mailbox: forward the hrtimer if not queued and under a lock	2022-06-14 18:11:42 +02:00
mailbox.h
Makefile
mtk-cmdq-mailbox.c
omap-mailbox.c
pcc.c
pl320-ipc.c
platform_mhu.c
qcom-apcs-ipc-mailbox.c
rockchip-mailbox.c
stm32-ipcc.c
tegra-hsp.c	mailbox: tegra-hsp: Flush whole channel	2022-04-15 14:18:01 +02:00
ti-msgmgr.c	mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0	2023-07-27 08:37:23 +02:00
zynqmp-ipi-mailbox.c	mailbox: zynqmp: Fix counts of child nodes	2023-05-17 11:35:57 +02:00