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Commit 006394a7 authored by Sunil Goutham's avatar Sunil Goutham Committed by David S. Miller
Browse files

net: thunderx: Set CQ timer threshold properly 



Properly set CQ timer threshold and also set it to 2us.
With previous incorrect settings it was set to 0.5us which is too less.

Signed-off-by: default avatarSunil Goutham <sgoutham@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a7b1f535

drivers/net/ethernet/cavium/thunder/nic.h

+2 −3
Original line number Diff line number Diff line
@@ -120,10 +120,9 @@ 
 * Calculated for SCLK of 700Mhz

 * value written should be a 1/16th of what is expected

 *

 * 1 tick per 0.05usec = value of 2.2

 * This 10% would be covered in CQ timer thresh value

 * 1 tick per 0.025usec

 */

#define NICPF_CLK_PER_INT_TICK		2

#define NICPF_CLK_PER_INT_TICK		1



/* Time to wait before we decide that a SQ is stuck.

 *

drivers/net/ethernet/cavium/thunder/nicvf_queues.c

+1 −1
Original line number Diff line number Diff line
@@ -592,7 +592,7 @@ void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs, 
	/* Set threshold value for interrupt generation */

	nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_THRESH, qidx, cq->thresh);

	nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_CFG2,

			      qidx, nic->cq_coalesce_usecs);

			      qidx, CMP_QUEUE_TIMER_THRESH);

}



/* Configures transmit queue */

drivers/net/ethernet/cavium/thunder/nicvf_queues.h

+1 −1
Original line number Diff line number Diff line
@@ -76,7 +76,7 @@ 
#define CMP_QSIZE		CMP_QUEUE_SIZE2

#define CMP_QUEUE_LEN		(1ULL << (CMP_QSIZE + 10))

#define CMP_QUEUE_CQE_THRESH	0

#define CMP_QUEUE_TIMER_THRESH	220 /* 10usec */

#define CMP_QUEUE_TIMER_THRESH	80 /* ~2usec */



#define RBDR_SIZE		RBDR_SIZE0

#define RCV_BUF_COUNT		(1ULL << (RBDR_SIZE + 13))