diff options
| author | Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> | 2021-03-27 21:19:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-30 02:16:14 +0300 |
| commit | 1bfb3dea965ff9f6226fd1709338f227363b6061 (patch) | |
| tree | 206623defe92ba08bf25e72cc42aa7f540d5dca3 /drivers/net/ethernet/chelsio | |
| parent | fb6ec87f7229b92baa81b35cbc76f2626d5bfadb (diff) | |
| download | linux-1bfb3dea965ff9f6226fd1709338f227363b6061.tar.xz | |
cxgb4: avoid collecting SGE_QBASE regs during traffic
Accessing SGE_QBASE_MAP[0-3] and SGE_QBASE_INDEX registers can lead
to SGE missing doorbells under heavy traffic. So, only collect them
when adapter is idle. Also update the regdump range to skip collecting
these registers.
Fixes: 80a95a80d358 ("cxgb4: collect SGE PF/VF queue map")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/chelsio')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c | 23 | ||||
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 3 |
2 files changed, 21 insertions, 5 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c index 6c85a10f465c..23a2ebdfd503 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c @@ -1794,11 +1794,25 @@ int cudbg_collect_sge_indirect(struct cudbg_init *pdbg_init, struct cudbg_buffer temp_buff = { 0 }; struct sge_qbase_reg_field *sge_qbase; struct ireg_buf *ch_sge_dbg; + u8 padap_running = 0; int i, rc; + u32 size; - rc = cudbg_get_buff(pdbg_init, dbg_buff, - sizeof(*ch_sge_dbg) * 2 + sizeof(*sge_qbase), - &temp_buff); + /* Accessing SGE_QBASE_MAP[0-3] and SGE_QBASE_INDEX regs can + * lead to SGE missing doorbells under heavy traffic. So, only + * collect them when adapter is idle. + */ + for_each_port(padap, i) { + padap_running = netif_running(padap->port[i]); + if (padap_running) + break; + } + + size = sizeof(*ch_sge_dbg) * 2; + if (!padap_running) + size += sizeof(*sge_qbase); + + rc = cudbg_get_buff(pdbg_init, dbg_buff, size, &temp_buff); if (rc) return rc; @@ -1820,7 +1834,8 @@ int cudbg_collect_sge_indirect(struct cudbg_init *pdbg_init, ch_sge_dbg++; } - if (CHELSIO_CHIP_VERSION(padap->params.chip) > CHELSIO_T5) { + if (CHELSIO_CHIP_VERSION(padap->params.chip) > CHELSIO_T5 && + !padap_running) { sge_qbase = (struct sge_qbase_reg_field *)ch_sge_dbg; /* 1 addr reg SGE_QBASE_INDEX and 4 data reg * SGE_QBASE_MAP[0-3] diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 98829e482bfa..80882cfc370f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -2090,7 +2090,8 @@ void t4_get_regs(struct adapter *adap, void *buf, size_t buf_size) 0x1190, 0x1194, 0x11a0, 0x11a4, 0x11b0, 0x11b4, - 0x11fc, 0x1274, + 0x11fc, 0x123c, + 0x1254, 0x1274, 0x1280, 0x133c, 0x1800, 0x18fc, 0x3000, 0x302c, |