diff options
Diffstat (limited to 'drivers/net/ethernet/cavium/liquidio/octeon_device.c')
| -rw-r--r-- | drivers/net/ethernet/cavium/liquidio/octeon_device.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_device.c b/drivers/net/ethernet/cavium/liquidio/octeon_device.c index 85e312381dcc..586b68899b06 100644 --- a/drivers/net/ethernet/cavium/liquidio/octeon_device.c +++ b/drivers/net/ethernet/cavium/liquidio/octeon_device.c @@ -1301,17 +1301,36 @@ int lio_get_device_id(void *dev) void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq) { + u64 instr_cnt; + struct octeon_device *oct = NULL; + /* the whole thing needs to be atomic, ideally */ if (droq) { spin_lock_bh(&droq->lock); writel(droq->pkt_count, droq->pkts_sent_reg); droq->pkt_count = 0; spin_unlock_bh(&droq->lock); + oct = droq->oct_dev; } if (iq) { spin_lock_bh(&iq->lock); writel(iq->pkt_in_done, iq->inst_cnt_reg); iq->pkt_in_done = 0; spin_unlock_bh(&iq->lock); + oct = iq->oct_dev; + } + /*write resend. Writing RESEND in SLI_PKTX_CNTS should be enough + *to trigger tx interrupts as well, if they are pending. + */ + if (oct && OCTEON_CN23XX_PF(oct)) { + if (droq) + writeq(CN23XX_INTR_RESEND, droq->pkts_sent_reg); + /*we race with firmrware here. read and write the IN_DONE_CNTS*/ + else if (iq) { + instr_cnt = readq(iq->inst_cnt_reg); + writeq(((instr_cnt & 0xFFFFFFFF00000000ULL) | + CN23XX_INTR_RESEND), + iq->inst_cnt_reg); + } } } |