diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_ptp.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ptp.c b/drivers/net/ethernet/qlogic/qed/qed_ptp.c index 80c9c0b172dd..26a9baf3497f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ptp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ptp.c @@ -34,6 +34,7 @@ #include "qed_dev_api.h" #include "qed_hw.h" #include "qed_l2.h" +#include "qed_mcp.h" #include "qed_ptp.h" #include "qed_reg_addr.h" @@ -45,6 +46,82 @@ #define QED_DRIFT_CNTR_DIRECTION_SHIFT 31 #define QED_TIMESTAMP_MASK BIT(16) +static enum qed_resc_lock qed_ptcdev_to_resc(struct qed_hwfn *p_hwfn) +{ + switch (qed_device_get_port_id(p_hwfn->cdev)) { + case 0: + return QED_RESC_LOCK_PTP_PORT0; + case 1: + return QED_RESC_LOCK_PTP_PORT1; + case 2: + return QED_RESC_LOCK_PTP_PORT2; + case 3: + return QED_RESC_LOCK_PTP_PORT3; + default: + return QED_RESC_LOCK_RESC_INVALID; + } +} + +static int qed_ptp_res_lock(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + struct qed_resc_lock_params params; + enum qed_resc_lock resource; + int rc; + + resource = qed_ptcdev_to_resc(p_hwfn); + if (resource == QED_RESC_LOCK_RESC_INVALID) + return -EINVAL; + + qed_mcp_resc_lock_default_init(¶ms, NULL, resource, true); + + rc = qed_mcp_resc_lock(p_hwfn, p_ptt, ¶ms); + if (rc && rc != -EINVAL) { + return rc; + } else if (rc == -EINVAL) { + /* MFW doesn't support resource locking, first PF on the port + * has lock ownership. + */ + if (p_hwfn->abs_pf_id < p_hwfn->cdev->num_ports_in_engines) + return 0; + + DP_INFO(p_hwfn, "PF doesn't have lock ownership\n"); + return -EBUSY; + } else if (!rc && !params.b_granted) { + DP_INFO(p_hwfn, "Failed to acquire ptp resource lock\n"); + return -EBUSY; + } + + return rc; +} + +static int qed_ptp_res_unlock(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt) +{ + struct qed_resc_unlock_params params; + enum qed_resc_lock resource; + int rc; + + resource = qed_ptcdev_to_resc(p_hwfn); + if (resource == QED_RESC_LOCK_RESC_INVALID) + return -EINVAL; + + qed_mcp_resc_lock_default_init(NULL, ¶ms, resource, true); + + rc = qed_mcp_resc_unlock(p_hwfn, p_ptt, ¶ms); + if (rc == -EINVAL) { + /* MFW doesn't support locking, first PF has lock ownership */ + if (p_hwfn->abs_pf_id < p_hwfn->cdev->num_ports_in_engines) { + rc = 0; + } else { + DP_INFO(p_hwfn, "PF doesn't have lock ownership\n"); + return -EINVAL; + } + } else if (rc) { + DP_INFO(p_hwfn, "Failed to release the ptp resource lock\n"); + } + + return rc; +} + /* Read Rx timestamp */ static int qed_ptp_hw_read_rx_ts(struct qed_dev *cdev, u64 *timestamp) { @@ -249,6 +326,14 @@ static int qed_ptp_hw_enable(struct qed_dev *cdev) { struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev); struct qed_ptt *p_ptt = p_hwfn->p_ptp_ptt; + int rc; + + rc = qed_ptp_res_lock(p_hwfn, p_ptt); + if (rc) { + DP_INFO(p_hwfn, + "Couldn't acquire the resource lock, skip ptp enable for this PF\n"); + return rc; + } /* Reset PTP event detection rules - will be configured in the IOCTL */ qed_wr(p_hwfn, p_ptt, NIG_REG_LLH_PTP_PARAM_MASK, 0x7FF); @@ -305,6 +390,8 @@ static int qed_ptp_hw_disable(struct qed_dev *cdev) struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev); struct qed_ptt *p_ptt = p_hwfn->p_ptp_ptt; + qed_ptp_res_unlock(p_hwfn, p_ptt); + /* Reset PTP event detection rules */ qed_wr(p_hwfn, p_ptt, NIG_REG_LLH_PTP_PARAM_MASK, 0x7FF); qed_wr(p_hwfn, p_ptt, NIG_REG_LLH_PTP_RULE_MASK, 0x3FFF); |