Hi Loic,
On 11/13/20 6:59 AM, Loic Poulain wrote:
If the IPA (IP hardware accelerator) is starved of event ring elements,
the modem is crashing (SDX55). That can be prevented by setting a
it is because of event processing is getting starved ? Event ring
elements = 2 x xfer ring is good for HW channels. Do you think NAPI
polling would help when you start verifying higher data rates?
larger number of events (i.e 2 x number of channel ring elements).
Tested with FN980m module.
Signed-off-by: Loic Poulain <loic.poulain@xxxxxxxxxx>
Reviewed-by: Hemant Kumar <hemantk@xxxxxxxxxxxxxx>
---
drivers/bus/mhi/pci_generic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index e3df838..13a7e4f 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -91,7 +91,7 @@ struct mhi_pci_dev_info {
#define MHI_EVENT_CONFIG_HW_DATA(ev_ring, ch_num) \
{ \
- .num_elements = 128, \
+ .num_elements = 256, \
.irq_moderation_ms = 5, \
.irq = (ev_ring) + 1, \
.priority = 1, \
--
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