OrgACRN
/
sof
mirror of https://github.com/thesofproject/sof.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

ipc: apply ipc change on BDW & HSW 

this patch follows:

ipc: Fix false positive IPC dropped messages.

On receiving an IPC IRQ the handler currently does not check the
IRQ mask. This means notification received ACKs (i.e. for trace updates)
from the host may be reported as duplicate host command IPCs.

Fix this by checking IPC IRQ mask.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
This commit is contained in:
Rander Wang 2018-12-07 16:37:56 +08:00 committed by Liam Girdwood
parent 2366d633b5
commit be45dacd42
1 changed files with 3 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/ipc/hsw-ipc.c
View File

@ -87,11 +87,12 @@ out:
static void irq_handler(void *arg)
{
uint32_t isr;
uint32_t isr, imrd;
uint32_t msg = 0;
/* Interrupt arrived, check src */
isr = shim_read(SHIM_ISRD);
imrd = shim_read(SHIM_IMRD);
tracev_ipc("ipc: irq isr 0x%x", isr);
@ -103,7 +104,7 @@ static void irq_handler(void *arg)
do_notify();
}
if (isr & SHIM_ISRD_BUSY) {
if (isr & SHIM_ISRD_BUSY && !(imrd & SHIM_IMRD_BUSY)) {
/* Mask Busy interrupt before return */
shim_write(SHIM_IMRD, shim_read(SHIM_IMRD) | SHIM_IMRD_BUSY);