* [dpdk-stable] [PATCH 2/2] net/bnxt: fix Rx FIFO pending bit
[not found] <20210426060755.12821-1-somnath.kotur@broadcom.com>
@ 2021-04-26 6:07 ` Somnath Kotur
2021-05-02 22:31 ` Ajit Khaparde
0 siblings, 1 reply; 2+ messages in thread
From: Somnath Kotur @ 2021-04-26 6:07 UTC (permalink / raw)
To: dev; +Cc: ferruh.yigit, Somnath Kotur, stable, Ajit Khaparde
Fix to clear the Rx FIFO while reading the timestamp.
If the Rx FIFO has pending bit set, keep reading to clear it
and return the last valid timestamp instead of unconditionally
returning an error.
Fixes: b11cceb83a34 ("net/bnxt: support timesync")
Cc: stable@dpdk.org
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
drivers/net/bnxt/bnxt.h | 1 +
drivers/net/bnxt/bnxt_ethdev.c | 38 ++++++++++++++++++++++++++++++----
2 files changed, 35 insertions(+), 4 deletions(-)
diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index dfdfa9f7a0..8f3ae41911 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -306,6 +306,7 @@ struct rte_flow {
struct bnxt_vnic_info *vnic;
};
+#define BNXT_PTP_RX_PND_CNT 10
#define BNXT_PTP_FLAGS_PATH_TX 0x0
#define BNXT_PTP_FLAGS_PATH_RX 0x1
#define BNXT_PTP_FLAGS_CURRENT_TIME 0x2
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index f5d2dc8590..eb81bf3991 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -3388,6 +3388,38 @@ static int bnxt_get_tx_ts(struct bnxt *bp, uint64_t *ts)
return 0;
}
+static int bnxt_clr_rx_ts(struct bnxt *bp, uint64_t *last_ts)
+{
+ struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ struct bnxt_pf_info *pf = bp->pf;
+ uint16_t port_id;
+ int i = 0;
+ uint32_t fifo;
+
+ if (!ptp || (bp->flags & BNXT_FLAG_CHIP_P5))
+ return -EINVAL;
+
+ port_id = pf->port_id;
+ fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
+ ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
+ while ((fifo & BNXT_PTP_RX_FIFO_PENDING) && (i < BNXT_PTP_RX_PND_CNT)) {
+ rte_write32(1 << port_id, (uint8_t *)bp->bar0 +
+ ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO_ADV]);
+ fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
+ ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
+ *last_ts = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
+ ptp->rx_mapped_regs[BNXT_PTP_RX_TS_L]));
+ *last_ts |= (uint64_t)rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
+ ptp->rx_mapped_regs[BNXT_PTP_RX_TS_H])) << 32;
+ i++;
+ }
+
+ if (i >= BNXT_PTP_RX_PND_CNT)
+ return -EBUSY;
+
+ return 0;
+}
+
static int bnxt_get_rx_ts(struct bnxt *bp, uint64_t *ts)
{
struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
@@ -3406,10 +3438,8 @@ static int bnxt_get_rx_ts(struct bnxt *bp, uint64_t *ts)
fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
- if (fifo & BNXT_PTP_RX_FIFO_PENDING) {
-/* bnxt_clr_rx_ts(bp); TBD */
- return -EBUSY;
- }
+ if (fifo & BNXT_PTP_RX_FIFO_PENDING)
+ return bnxt_clr_rx_ts(bp, ts);
*ts = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
ptp->rx_mapped_regs[BNXT_PTP_RX_TS_L]));
--
2.28.0.497.g54e85e7
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-stable] [PATCH 2/2] net/bnxt: fix Rx FIFO pending bit
2021-04-26 6:07 ` [dpdk-stable] [PATCH 2/2] net/bnxt: fix Rx FIFO pending bit Somnath Kotur
@ 2021-05-02 22:31 ` Ajit Khaparde
0 siblings, 0 replies; 2+ messages in thread
From: Ajit Khaparde @ 2021-05-02 22:31 UTC (permalink / raw)
To: Somnath Kotur; +Cc: dpdk-dev, Ferruh Yigit, dpdk stable
[-- Attachment #1: Type: text/plain, Size: 3498 bytes --]
On Sun, Apr 25, 2021 at 11:09 PM Somnath Kotur <somnath.kotur@broadcom.com>
wrote:
> Fix to clear the Rx FIFO while reading the timestamp.
> If the Rx FIFO has pending bit set, keep reading to clear it
> and return the last valid timestamp instead of unconditionally
> returning an error.
>
> Fixes: b11cceb83a34 ("net/bnxt: support timesync")
> Cc: stable@dpdk.org
>
> Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
>
Patch applied to dpdk-next-net-brcm. Thanks
> ---
> drivers/net/bnxt/bnxt.h | 1 +
> drivers/net/bnxt/bnxt_ethdev.c | 38 ++++++++++++++++++++++++++++++----
> 2 files changed, 35 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
> index dfdfa9f7a0..8f3ae41911 100644
> --- a/drivers/net/bnxt/bnxt.h
> +++ b/drivers/net/bnxt/bnxt.h
> @@ -306,6 +306,7 @@ struct rte_flow {
> struct bnxt_vnic_info *vnic;
> };
>
> +#define BNXT_PTP_RX_PND_CNT 10
> #define BNXT_PTP_FLAGS_PATH_TX 0x0
> #define BNXT_PTP_FLAGS_PATH_RX 0x1
> #define BNXT_PTP_FLAGS_CURRENT_TIME 0x2
> diff --git a/drivers/net/bnxt/bnxt_ethdev.c
> b/drivers/net/bnxt/bnxt_ethdev.c
> index f5d2dc8590..eb81bf3991 100644
> --- a/drivers/net/bnxt/bnxt_ethdev.c
> +++ b/drivers/net/bnxt/bnxt_ethdev.c
> @@ -3388,6 +3388,38 @@ static int bnxt_get_tx_ts(struct bnxt *bp, uint64_t
> *ts)
> return 0;
> }
>
> +static int bnxt_clr_rx_ts(struct bnxt *bp, uint64_t *last_ts)
> +{
> + struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
> + struct bnxt_pf_info *pf = bp->pf;
> + uint16_t port_id;
> + int i = 0;
> + uint32_t fifo;
> +
> + if (!ptp || (bp->flags & BNXT_FLAG_CHIP_P5))
> + return -EINVAL;
> +
> + port_id = pf->port_id;
> + fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
> + ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
> + while ((fifo & BNXT_PTP_RX_FIFO_PENDING) && (i <
> BNXT_PTP_RX_PND_CNT)) {
> + rte_write32(1 << port_id, (uint8_t *)bp->bar0 +
> + ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO_ADV]);
> + fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
> +
> ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
> + *last_ts = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0
> +
> +
> ptp->rx_mapped_regs[BNXT_PTP_RX_TS_L]));
> + *last_ts |= (uint64_t)rte_le_to_cpu_32(rte_read32((uint8_t
> *)bp->bar0 +
> +
> ptp->rx_mapped_regs[BNXT_PTP_RX_TS_H])) << 32;
> + i++;
> + }
> +
> + if (i >= BNXT_PTP_RX_PND_CNT)
> + return -EBUSY;
> +
> + return 0;
> +}
> +
> static int bnxt_get_rx_ts(struct bnxt *bp, uint64_t *ts)
> {
> struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
> @@ -3406,10 +3438,8 @@ static int bnxt_get_rx_ts(struct bnxt *bp, uint64_t
> *ts)
>
> fifo = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
> ptp->rx_mapped_regs[BNXT_PTP_RX_FIFO]));
> - if (fifo & BNXT_PTP_RX_FIFO_PENDING) {
> -/* bnxt_clr_rx_ts(bp); TBD */
> - return -EBUSY;
> - }
> + if (fifo & BNXT_PTP_RX_FIFO_PENDING)
> + return bnxt_clr_rx_ts(bp, ts);
>
> *ts = rte_le_to_cpu_32(rte_read32((uint8_t *)bp->bar0 +
> ptp->rx_mapped_regs[BNXT_PTP_RX_TS_L]));
> --
> 2.28.0.497.g54e85e7
>
>
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2021-04-26 6:07 ` [dpdk-stable] [PATCH 2/2] net/bnxt: fix Rx FIFO pending bit Somnath Kotur
2021-05-02 22:31 ` Ajit Khaparde
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