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path: root/drivers/infiniband/hw/hfi1/mad.c
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Diffstat (limited to 'drivers/infiniband/hw/hfi1/mad.c')
-rw-r--r--drivers/infiniband/hw/hfi1/mad.c127
1 files changed, 117 insertions, 10 deletions
diff --git a/drivers/infiniband/hw/hfi1/mad.c b/drivers/infiniband/hw/hfi1/mad.c
index 34547a48a445..e9962c65c68f 100644
--- a/drivers/infiniband/hw/hfi1/mad.c
+++ b/drivers/infiniband/hw/hfi1/mad.c
@@ -2649,6 +2649,79 @@ static void a0_portstatus(struct hfi1_pportdata *ppd,
}
}
+/**
+ * tx_link_width - convert link width bitmask to integer
+ * value representing actual link width.
+ * @link_width: width of active link
+ * @return: return index of the bit set in link_width var
+ *
+ * The function convert and return the index of bit set
+ * that indicate the current link width.
+ */
+u16 tx_link_width(u16 link_width)
+{
+ int n = LINK_WIDTH_DEFAULT;
+ u16 tx_width = n;
+
+ while (link_width && n) {
+ if (link_width & (1 << (n - 1))) {
+ tx_width = n;
+ break;
+ }
+ n--;
+ }
+
+ return tx_width;
+}
+
+/**
+ * get_xmit_wait_counters - Convert HFI 's SendWaitCnt/SendWaitVlCnt
+ * counter in unit of TXE cycle times to flit times.
+ * @ppd: info of physical Hfi port
+ * @link_width: width of active link
+ * @link_speed: speed of active link
+ * @vl: represent VL0-VL7, VL15 for PortVLXmitWait counters request
+ * and if vl value is C_VL_COUNT, it represent SendWaitCnt
+ * counter request
+ * @return: return SendWaitCnt/SendWaitVlCnt counter value per vl.
+ *
+ * Convert SendWaitCnt/SendWaitVlCnt counter from TXE cycle times to
+ * flit times. Call this function to samples these counters. This
+ * function will calculate for previous state transition and update
+ * current state at end of function using ppd->prev_link_width and
+ * ppd->port_vl_xmit_wait_last to port_vl_xmit_wait_curr and link_width.
+ */
+u64 get_xmit_wait_counters(struct hfi1_pportdata *ppd,
+ u16 link_width, u16 link_speed, int vl)
+{
+ u64 port_vl_xmit_wait_curr;
+ u64 delta_vl_xmit_wait;
+ u64 xmit_wait_val;
+
+ if (vl > C_VL_COUNT)
+ return 0;
+ if (vl < C_VL_COUNT)
+ port_vl_xmit_wait_curr =
+ read_port_cntr(ppd, C_TX_WAIT_VL, vl);
+ else
+ port_vl_xmit_wait_curr =
+ read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL);
+
+ xmit_wait_val =
+ port_vl_xmit_wait_curr -
+ ppd->port_vl_xmit_wait_last[vl];
+ delta_vl_xmit_wait =
+ convert_xmit_counter(xmit_wait_val,
+ ppd->prev_link_width,
+ link_speed);
+
+ ppd->vl_xmit_flit_cnt[vl] += delta_vl_xmit_wait;
+ ppd->port_vl_xmit_wait_last[vl] = port_vl_xmit_wait_curr;
+ ppd->prev_link_width = link_width;
+
+ return ppd->vl_xmit_flit_cnt[vl];
+}
+
static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
struct ib_device *ibdev,
u8 port, u32 *resp_len)
@@ -2668,6 +2741,8 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
int vfi;
u64 tmp, tmp2;
+ u16 link_width;
+ u16 link_speed;
response_data_size = sizeof(struct opa_port_status_rsp) +
num_vls * sizeof(struct _vls_pctrs);
@@ -2711,8 +2786,16 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
rsp->port_multicast_rcv_pkts =
cpu_to_be64(read_dev_cntr(dd, C_DC_MC_RCV_PKTS,
CNTR_INVALID_VL));
+ /*
+ * Convert PortXmitWait counter from TXE cycle times
+ * to flit times.
+ */
+ link_width =
+ tx_link_width(ppd->link_width_downgrade_tx_active);
+ link_speed = get_link_speed(ppd->link_speed_active);
rsp->port_xmit_wait =
- cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
+ cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
+ link_speed, C_VL_COUNT));
rsp->port_rcv_fecn =
cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
rsp->port_rcv_becn =
@@ -2777,10 +2860,14 @@ static int pma_get_opa_portstatus(struct opa_pma_mad *pmp,
rsp->vls[vfi].port_vl_xmit_pkts =
cpu_to_be64(read_port_cntr(ppd, C_TX_PKT_VL,
idx_from_vl(vl)));
-
+ /*
+ * Convert PortVlXmitWait counter from TXE cycle
+ * times to flit times.
+ */
rsp->vls[vfi].port_vl_xmit_wait =
- cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
- idx_from_vl(vl)));
+ cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
+ link_speed,
+ idx_from_vl(vl)));
rsp->vls[vfi].port_vl_rcv_fecn =
cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
@@ -2910,6 +2997,8 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
unsigned long vl;
u32 vl_select_mask;
int vfi;
+ u16 link_width;
+ u16 link_speed;
num_ports = be32_to_cpu(pmp->mad_hdr.attr_mod) >> 24;
num_vls = hweight32(be32_to_cpu(req->vl_select_mask));
@@ -2959,8 +3048,16 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
rsp->link_quality_indicator = cpu_to_be32((u32)lq);
pma_get_opa_port_dctrs(ibdev, rsp);
+ /*
+ * Convert PortXmitWait counter from TXE
+ * cycle times to flit times.
+ */
+ link_width =
+ tx_link_width(ppd->link_width_downgrade_tx_active);
+ link_speed = get_link_speed(ppd->link_speed_active);
rsp->port_xmit_wait =
- cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL));
+ cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
+ link_speed, C_VL_COUNT));
rsp->port_rcv_fecn =
cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN, CNTR_INVALID_VL));
rsp->port_rcv_becn =
@@ -2996,9 +3093,14 @@ static int pma_get_opa_datacounters(struct opa_pma_mad *pmp,
cpu_to_be64(read_dev_cntr(dd, C_DC_RX_PKT_VL,
idx_from_vl(vl)));
+ /*
+ * Convert PortVlXmitWait counter from TXE
+ * cycle times to flit times.
+ */
rsp->vls[vfi].port_vl_xmit_wait =
- cpu_to_be64(read_port_cntr(ppd, C_TX_WAIT_VL,
- idx_from_vl(vl)));
+ cpu_to_be64(get_xmit_wait_counters(ppd, link_width,
+ link_speed,
+ idx_from_vl(vl)));
rsp->vls[vfi].port_vl_rcv_fecn =
cpu_to_be64(read_dev_cntr(dd, C_DC_RCV_FCN_VL,
@@ -3416,9 +3518,11 @@ static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
if (counter_select & CS_PORT_MCAST_RCV_PKTS)
write_dev_cntr(dd, C_DC_MC_RCV_PKTS, CNTR_INVALID_VL, 0);
- if (counter_select & CS_PORT_XMIT_WAIT)
+ if (counter_select & CS_PORT_XMIT_WAIT) {
write_port_cntr(ppd, C_TX_WAIT, CNTR_INVALID_VL, 0);
-
+ ppd->port_vl_xmit_wait_last[C_VL_COUNT] = 0;
+ ppd->vl_xmit_flit_cnt[C_VL_COUNT] = 0;
+ }
/* ignore cs_sw_portCongestion for HFIs */
if (counter_select & CS_PORT_RCV_FECN)
@@ -3491,8 +3595,11 @@ static int pma_set_opa_portstatus(struct opa_pma_mad *pmp,
if (counter_select & CS_PORT_RCV_PKTS)
write_dev_cntr(dd, C_DC_RX_PKT_VL, idx_from_vl(vl), 0);
- if (counter_select & CS_PORT_XMIT_WAIT)
+ if (counter_select & CS_PORT_XMIT_WAIT) {
write_port_cntr(ppd, C_TX_WAIT_VL, idx_from_vl(vl), 0);
+ ppd->port_vl_xmit_wait_last[idx_from_vl(vl)] = 0;
+ ppd->vl_xmit_flit_cnt[idx_from_vl(vl)] = 0;
+ }
/* sw_port_vl_congestion is 0 for HFIs */
if (counter_select & CS_PORT_RCV_FECN)
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-17 02:33:12 +0300