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Message-Id: <1622249601-7106-3-git-send-email-michael.chan@broadcom.com>
Date: Fri, 28 May 2021 20:53:16 -0400
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, kuba@...nel.org, gospo@...adcom.com,
richardcochran@...il.com, pavan.chebbi@...adcom.com,
edwin.peer@...adcom.com
Subject: [PATCH net-next 2/7] bnxt_en: Get PTP hardware capability from firmware.
Store PTP hardware info in a structure if hardware and firmware support PTP.
Reviewed-by: Edwin Peer <edwin.peer@...adcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 46 +++++++++++++++++++
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 +
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h | 44 ++++++++++++++++++
3 files changed, 92 insertions(+)
create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index fcc729d52b17..faf5fdbdf8c7 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -49,6 +49,8 @@
#include <linux/log2.h>
#include <linux/aer.h>
#include <linux/bitmap.h>
+#include <linux/ptp_clock_kernel.h>
+#include <linux/timecounter.h>
#include <linux/cpu_rmap.h>
#include <linux/cpumask.h>
#include <net/pkt_cls.h>
@@ -63,6 +65,7 @@
#include "bnxt_ethtool.h"
#include "bnxt_dcb.h"
#include "bnxt_xdp.h"
+#include "bnxt_ptp.h"
#include "bnxt_vfr.h"
#include "bnxt_tc.h"
#include "bnxt_devlink.h"
@@ -7391,6 +7394,45 @@ int bnxt_hwrm_func_resc_qcaps(struct bnxt *bp, bool all)
return rc;
}
+/* bp->hwrm_cmd_lock already held. */
+static int __bnxt_hwrm_ptp_qcfg(struct bnxt *bp)
+{
+ struct hwrm_port_mac_ptp_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
+ struct hwrm_port_mac_ptp_qcfg_input req = {0};
+ struct bnxt_ptp_cfg *ptp = bp->ptp_cfg;
+ int rc;
+
+ if (bp->hwrm_spec_code < 0x10801) {
+ rc = -ENODEV;
+ goto no_ptp;
+ }
+
+ req.port_id = cpu_to_le16(bp->pf.port_id);
+ bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_PORT_MAC_PTP_QCFG, -1, -1);
+ rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
+ if (rc)
+ goto no_ptp;
+
+ if (!(resp->flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_HWRM_ACCESS)) {
+ rc = -ENODEV;
+ goto no_ptp;
+ }
+ if (!ptp) {
+ ptp = kzalloc(sizeof(*ptp), GFP_KERNEL);
+ if (!ptp)
+ return -ENOMEM;
+ ptp->bp = bp;
+ bp->ptp_cfg = ptp;
+ }
+ return 0;
+
+no_ptp:
+ kfree(ptp);
+ bp->ptp_cfg = NULL;
+ return rc;
+
+}
+
static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
{
int rc = 0;
@@ -7462,6 +7504,8 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->flags &= ~BNXT_FLAG_WOL_CAP;
if (flags & FUNC_QCAPS_RESP_FLAGS_WOL_MAGICPKT_SUPPORTED)
bp->flags |= BNXT_FLAG_WOL_CAP;
+ if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED)
+ __bnxt_hwrm_ptp_qcfg(bp);
} else {
#ifdef CONFIG_BNXT_SRIOV
struct bnxt_vf_info *vf = &bp->vf;
@@ -12566,6 +12610,8 @@ static void bnxt_remove_one(struct pci_dev *pdev)
bnxt_dcb_free(bp);
kfree(bp->edev);
bp->edev = NULL;
+ kfree(bp->ptp_cfg);
+ bp->ptp_cfg = NULL;
kfree(bp->fw_health);
bp->fw_health = NULL;
bnxt_cleanup_pci(bp);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 30e47ea343f9..65deefcb04f8 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2042,6 +2042,8 @@ struct bnxt {
struct bpf_prog *xdp_prog;
+ struct bnxt_ptp_cfg *ptp_cfg;
+
/* devlink interface and vf-rep structs */
struct devlink *dl;
struct devlink_port dl_port;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
new file mode 100644
index 000000000000..aecca18ecfbd
--- /dev/null
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
@@ -0,0 +1,44 @@
+/* Broadcom NetXtreme-C/E network driver.
+ *
+ * Copyright (c) 2021 Broadcom Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef BNXT_PTP_H
+#define BNXT_PTP_H
+
+struct bnxt_ptp_cfg {
+ struct ptp_clock_info ptp_info;
+ struct ptp_clock *ptp_clock;
+ struct cyclecounter cc;
+ struct timecounter tc;
+ struct sk_buff *tx_skb;
+ u64 current_time;
+ u64 old_time;
+ struct work_struct ptp_ts_task;
+ u16 tx_seqid;
+ struct bnxt *bp;
+ atomic_t tx_avail;
+#define BNXT_MAX_TX_TS 1
+ u16 rxctl;
+#define BNXT_PTP_MSG_SYNC (1 << 0)
+#define BNXT_PTP_MSG_DELAY_REQ (1 << 1)
+#define BNXT_PTP_MSG_PDELAY_REQ (1 << 2)
+#define BNXT_PTP_MSG_PDELAY_RESP (1 << 3)
+#define BNXT_PTP_MSG_FOLLOW_UP (1 << 8)
+#define BNXT_PTP_MSG_DELAY_RESP (1 << 9)
+#define BNXT_PTP_MSG_PDELAY_RESP_FOLLOW_UP (1 << 10)
+#define BNXT_PTP_MSG_ANNOUNCE (1 << 11)
+#define BNXT_PTP_MSG_SIGNALING (1 << 12)
+#define BNXT_PTP_MSG_MANAGEMENT (1 << 13)
+#define BNXT_PTP_MSG_EVENTS (BNXT_PTP_MSG_SYNC | \
+ BNXT_PTP_MSG_DELAY_REQ | \
+ BNXT_PTP_MSG_PDELAY_REQ | \
+ BNXT_PTP_MSG_PDELAY_RESP)
+ u8 tx_tstamp_en:1;
+ int rx_filter;
+};
+#endif
--
2.18.1
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