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bnxt_en: Get PTP hardware capability from firmware

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Store PTP hardware info in a structure if hardware and firmware support PTP.

Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2021-06-27 13:19:45 -04:00 committed by David S. Miller
parent 78eeadb8fe
commit ae5c42f0b9
3 changed files with 113 additions and 0 deletions
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59
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -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 +7394,56 @@ hwrm_func_resc_qcaps_exit:
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;
u8 flags;
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;
flags = resp->flags;
if (!(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;
}
if (flags & PORT_MAC_PTP_QCFG_RESP_FLAGS_PARTIAL_DIRECT_ACCESS_REF_CLOCK) {
ptp->refclk_regs[0] = le32_to_cpu(resp->ts_ref_clock_reg_lower);
ptp->refclk_regs[1] = le32_to_cpu(resp->ts_ref_clock_reg_upper);
} else if (bp->flags & BNXT_FLAG_CHIP_P5) {
ptp->refclk_regs[0] = BNXT_TS_REG_TIMESYNC_TS0_LOWER;
ptp->refclk_regs[1] = BNXT_TS_REG_TIMESYNC_TS0_UPPER;
} else {
rc = -ENODEV;
goto no_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 +7515,8 @@ 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;
@ -12571,6 +12626,8 @@ 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);
@ -13161,6 +13218,8 @@ init_err_pci_clean:
bnxt_free_hwrm_short_cmd_req(bp);
bnxt_free_hwrm_resources(bp);
bnxt_ethtool_free(bp);
kfree(bp->ptp_cfg);
bp->ptp_cfg = NULL;
kfree(bp->fw_health);
bp->fw_health = NULL;
bnxt_cleanup_pci(bp);

5
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View File

@ -1362,6 +1362,9 @@ struct bnxt_test_info {
#define BNXT_GRC_REG_CHIP_NUM 0x48
#define BNXT_GRC_REG_BASE 0x260000
#define BNXT_TS_REG_TIMESYNC_TS0_LOWER 0x640180c
#define BNXT_TS_REG_TIMESYNC_TS0_UPPER 0x6401810
#define BNXT_GRC_BASE_MASK 0xfffff000
#define BNXT_GRC_OFFSET_MASK 0x00000ffc
@ -2042,6 +2045,8 @@ 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;

49
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h Normal file
View File

@ -0,0 +1,49 @@
/* 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;
/* serialize timecounter access */
spinlock_t ptp_lock;
struct sk_buff *tx_skb;
u64 current_time;
u64 old_time;
unsigned long next_period;
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;
u32 refclk_regs[2];
u32 refclk_mapped_regs[2];
};
#endif