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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: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sunil Goutham 2015-12-02 15:36:15 +05:30 committed by David S. Miller
parent a7b1f535a8
commit 006394a7cb
3 changed files with 4 additions and 5 deletions
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5
drivers/net/ethernet/cavium/thunder/nic.h
View File

@ -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.
*

2
drivers/net/ethernet/cavium/thunder/nicvf_queues.c
View File

@ -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 */

2
drivers/net/ethernet/cavium/thunder/nicvf_queues.h
View File

@ -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))