1 files changed, 353 insertions, 37 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index c5da8e9cc0a0..2d35a278c555 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -242,7 +242,8 @@ static void ice_cfg_itr_gran(struct ice_hw *hw)
  * @ring: ring to get the absolute queue index
  * @tc: traffic class number
  */
-static u16 ice_calc_txq_handle(struct ice_vsi *vsi, struct ice_tx_ring *ring, u8 tc)
+static u16
+ice_calc_txq_handle(const struct ice_vsi *vsi, struct ice_tx_ring *ring, u8 tc)
 {
 	WARN_ONCE(ice_ring_is_xdp(ring) && tc, "XDP ring can't belong to TC other than 0\n");
 
@@ -278,30 +279,20 @@ static void ice_cfg_xps_tx_ring(struct ice_tx_ring *ring)
 }
 
 /**
- * ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance
- * @ring: The Tx ring to configure
- * @tlan_ctx: Pointer to the Tx LAN queue context structure to be initialized
- * @pf_q: queue index in the PF space
+ * ice_set_txq_ctx_vmvf - set queue context VM/VF type and number by VSI type
+ * @ring: the Tx ring to configure
+ * @vmvf_type: VM/VF type
+ * @vmvf_num: VM/VF number
  *
- * Configure the Tx descriptor ring in TLAN context.
+ * Return: 0 on success and a negative value on error.
  */
-static void
-ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
+static int
+ice_set_txq_ctx_vmvf(struct ice_tx_ring *ring, u8 *vmvf_type, u16 *vmvf_num)
 {
 	struct ice_vsi *vsi = ring->vsi;
-	struct ice_hw *hw = &vsi->back->hw;
-
-	tlan_ctx->base = ring->dma >> ICE_TLAN_CTX_BASE_S;
-
-	tlan_ctx->port_num = vsi->port_info->lport;
-
-	/* Transmit Queue Length */
-	tlan_ctx->qlen = ring->count;
-
-	ice_set_cgd_num(tlan_ctx, ring->dcb_tc);
+	struct ice_hw *hw;
 
-	/* PF number */
-	tlan_ctx->pf_num = hw->pf_id;
+	hw = &vsi->back->hw;
 
 	/* queue belongs to a specific VSI type
 	 * VF / VM index should be programmed per vmvf_type setting:
@@ -314,21 +305,60 @@ ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf
 	case ICE_VSI_CTRL:
 	case ICE_VSI_PF:
 		if (ring->ch)
-			tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VMQ;
+			*vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VMQ;
 		else
-			tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
+			*vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
 		break;
 	case ICE_VSI_VF:
 		/* Firmware expects vmvf_num to be absolute VF ID */
-		tlan_ctx->vmvf_num = hw->func_caps.vf_base_id + vsi->vf->vf_id;
-		tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF;
+		*vmvf_num = hw->func_caps.vf_base_id + vsi->vf->vf_id;
+		*vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VF;
 		break;
 	case ICE_VSI_SF:
-		tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VMQ;
+		*vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_VMQ;
 		break;
 	default:
-		return;
+		dev_info(ice_pf_to_dev(vsi->back),
+			 "Unable to set VMVF type for VSI type %d\n",
+			 vsi->type);
+		return -EINVAL;
 	}
+	return 0;
+}
+
+/**
+ * ice_setup_tx_ctx - setup a struct ice_tlan_ctx instance
+ * @ring: the Tx ring to configure
+ * @tlan_ctx: pointer to the Tx LAN queue context structure to be initialized
+ * @pf_q: queue index in the PF space
+ *
+ * Configure the Tx descriptor ring in TLAN context.
+ *
+ * Return: 0 on success and a negative value on error.
+ */
+static int
+ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
+{
+	struct ice_vsi *vsi = ring->vsi;
+	struct ice_hw *hw;
+	int err;
+
+	hw = &vsi->back->hw;
+	tlan_ctx->base = ring->dma >> ICE_TLAN_CTX_BASE_S;
+	tlan_ctx->port_num = vsi->port_info->lport;
+
+	/* Transmit Queue Length */
+	tlan_ctx->qlen = ring->count;
+
+	ice_set_cgd_num(tlan_ctx, ring->dcb_tc);
+
+	/* PF number */
+	tlan_ctx->pf_num = hw->pf_id;
+
+	err = ice_set_txq_ctx_vmvf(ring, &tlan_ctx->vmvf_type,
+				   &tlan_ctx->vmvf_num);
+	if (err)
+		return err;
 
 	/* make sure the context is associated with the right VSI */
 	if (ring->ch)
@@ -355,6 +385,80 @@ ice_setup_tx_ctx(struct ice_tx_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf
 	 * 1: Legacy Host Interface
 	 */
 	tlan_ctx->legacy_int = ICE_TX_LEGACY;
+
+	return 0;
+}
+
+/**
+ * ice_setup_txtime_ctx - setup a struct ice_txtime_ctx instance
+ * @ring: the tstamp ring to configure
+ * @txtime_ctx: pointer to the Tx time queue context structure to be initialized
+ *
+ * Return: 0 on success and a negative value on error.
+ */
+static int
+ice_setup_txtime_ctx(const struct ice_tstamp_ring *ring,
+		     struct ice_txtime_ctx *txtime_ctx)
+{
+	struct ice_tx_ring *tx_ring = ring->tx_ring;
+	struct ice_vsi *vsi = tx_ring->vsi;
+	struct ice_hw *hw = &vsi->back->hw;
+	int err;
+
+	txtime_ctx->base = ring->dma >> ICE_TXTIME_CTX_BASE_S;
+
+	/* Tx time Queue Length */
+	txtime_ctx->qlen = ring->count;
+	txtime_ctx->txtime_ena_q = 1;
+
+	/* PF number */
+	txtime_ctx->pf_num = hw->pf_id;
+
+	err = ice_set_txq_ctx_vmvf(tx_ring, &txtime_ctx->vmvf_type,
+				   &txtime_ctx->vmvf_num);
+	if (err)
+		return err;
+
+	/* make sure the context is associated with the right VSI */
+	if (tx_ring->ch)
+		txtime_ctx->src_vsi = tx_ring->ch->vsi_num;
+	else
+		txtime_ctx->src_vsi = ice_get_hw_vsi_num(hw, vsi->idx);
+
+	txtime_ctx->ts_res = ICE_TXTIME_CTX_RESOLUTION_128NS;
+	txtime_ctx->drbell_mode_32 = ICE_TXTIME_CTX_DRBELL_MODE_32;
+	txtime_ctx->ts_fetch_prof_id = ICE_TXTIME_CTX_FETCH_PROF_ID_0;
+
+	return 0;
+}
+
+/**
+ * ice_calc_ts_ring_count - calculate the number of Tx time stamp descriptors
+ * @tx_ring: Tx ring to calculate the count for
+ *
+ * Return: the number of Tx time stamp descriptors.
+ */
+u16 ice_calc_ts_ring_count(struct ice_tx_ring *tx_ring)
+{
+	u16 prof = ICE_TXTIME_CTX_FETCH_PROF_ID_0;
+	struct ice_vsi *vsi = tx_ring->vsi;
+	struct ice_hw *hw = &vsi->back->hw;
+	u16 max_fetch_desc = 0, fetch, i;
+	u32 reg;
+
+	for (i = 0; i < ICE_TXTIME_FETCH_PROFILE_CNT; i++) {
+		reg = rd32(hw, E830_GLTXTIME_FETCH_PROFILE(prof, 0));
+		fetch = FIELD_GET(E830_GLTXTIME_FETCH_PROFILE_FETCH_TS_DESC_M,
+				  reg);
+		max_fetch_desc = max(fetch, max_fetch_desc);
+	}
+
+	if (!max_fetch_desc)
+		max_fetch_desc = ICE_TXTIME_FETCH_TS_DESC_DFLT;
+
+	max_fetch_desc = ALIGN(max_fetch_desc, ICE_REQ_DESC_MULTIPLE);
+
+	return tx_ring->count + max_fetch_desc;
 }
 
 /**
@@ -882,13 +986,49 @@ void ice_vsi_free_q_vectors(struct ice_vsi *vsi)
 }
 
 /**
+ * ice_cfg_tstamp - Configure Tx time stamp queue
+ * @tx_ring: Tx ring to be configured with timestamping
+ *
+ * Return: 0 on success and a negative value on error.
+ */
+static int
+ice_cfg_tstamp(struct ice_tx_ring *tx_ring)
+{
+	DEFINE_RAW_FLEX(struct ice_aqc_set_txtime_qgrp, txtime_qg_buf,
+			txtimeqs, 1);
+	u8 txtime_buf_len = struct_size(txtime_qg_buf, txtimeqs, 1);
+	struct ice_tstamp_ring *tstamp_ring = tx_ring->tstamp_ring;
+	struct ice_txtime_ctx txtime_ctx = {};
+	struct ice_vsi *vsi = tx_ring->vsi;
+	struct ice_pf *pf = vsi->back;
+	struct ice_hw *hw = &pf->hw;
+	u16 pf_q = tx_ring->reg_idx;
+	int err;
+
+	err = ice_setup_txtime_ctx(tstamp_ring, &txtime_ctx);
+	if (err) {
+		dev_err(ice_pf_to_dev(pf), "Failed to setup Tx time queue context for queue %d, error: %d\n",
+			pf_q, err);
+		return err;
+	}
+	ice_pack_txtime_ctx(&txtime_ctx,
+			    &txtime_qg_buf->txtimeqs[0].txtime_ctx);
+
+	tstamp_ring->tail = hw->hw_addr + E830_GLQTX_TXTIME_DBELL_LSB(pf_q);
+	return ice_aq_set_txtimeq(hw, pf_q, 1, txtime_qg_buf,
+				  txtime_buf_len, NULL);
+}
+
+/**
  * ice_vsi_cfg_txq - Configure single Tx queue
  * @vsi: the VSI that queue belongs to
  * @ring: Tx ring to be configured
  * @qg_buf: queue group buffer
+ *
+ * Return: 0 on success and a negative value on error.
  */
 static int
-ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring,
+ice_vsi_cfg_txq(const struct ice_vsi *vsi, struct ice_tx_ring *ring,
 		struct ice_aqc_add_tx_qgrp *qg_buf)
 {
 	u8 buf_len = struct_size(qg_buf, txqs, 1);
@@ -897,15 +1037,20 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring,
 	struct ice_channel *ch = ring->ch;
 	struct ice_pf *pf = vsi->back;
 	struct ice_hw *hw = &pf->hw;
+	u32 pf_q, vsi_idx;
 	int status;
-	u16 pf_q;
 	u8 tc;
 
 	/* Configure XPS */
 	ice_cfg_xps_tx_ring(ring);
 
 	pf_q = ring->reg_idx;
-	ice_setup_tx_ctx(ring, &tlan_ctx, pf_q);
+	status = ice_setup_tx_ctx(ring, &tlan_ctx, pf_q);
+	if (status) {
+		dev_err(ice_pf_to_dev(pf), "Failed to setup Tx context for queue %d, error: %d\n",
+			pf_q, status);
+		return status;
+	}
 	/* copy context contents into the qg_buf */
 	qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
 	ice_pack_txq_ctx(&tlan_ctx, &qg_buf->txqs[0].txq_ctx);
@@ -925,14 +1070,15 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring,
 	 */
 	ring->q_handle = ice_calc_txq_handle(vsi, ring, tc);
 
-	if (ch)
-		status = ice_ena_vsi_txq(vsi->port_info, ch->ch_vsi->idx, 0,
-					 ring->q_handle, 1, qg_buf, buf_len,
-					 NULL);
-	else
-		status = ice_ena_vsi_txq(vsi->port_info, vsi->idx, tc,
-					 ring->q_handle, 1, qg_buf, buf_len,
-					 NULL);
+	if (ch) {
+		tc = 0;
+		vsi_idx = ch->ch_vsi->idx;
+	} else {
+		vsi_idx = vsi->idx;
+	}
+
+	status = ice_ena_vsi_txq(vsi->port_info, vsi_idx, tc, ring->q_handle,
+				 1, qg_buf, buf_len, NULL);
 	if (status) {
 		dev_err(ice_pf_to_dev(pf), "Failed to set LAN Tx queue context, error: %d\n",
 			status);
@@ -947,7 +1093,32 @@ ice_vsi_cfg_txq(struct ice_vsi *vsi, struct ice_tx_ring *ring,
 	if (pf_q == le16_to_cpu(txq->txq_id))
 		ring->txq_teid = le32_to_cpu(txq->q_teid);
 
+	if (ice_is_txtime_ena(ring)) {
+		status = ice_alloc_setup_tstamp_ring(ring);
+		if (status) {
+			dev_err(ice_pf_to_dev(pf),
+				"Failed to allocate Tx timestamp ring, error: %d\n",
+				status);
+			goto err_setup_tstamp;
+		}
+
+		status = ice_cfg_tstamp(ring);
+		if (status) {
+			dev_err(ice_pf_to_dev(pf), "Failed to set Tx Time queue context, error: %d\n",
+				status);
+			goto err_cfg_tstamp;
+		}
+	}
 	return 0;
+
+err_cfg_tstamp:
+	ice_free_tx_tstamp_ring(ring);
+err_setup_tstamp:
+	ice_dis_vsi_txq(vsi->port_info, vsi_idx, tc, 1, &ring->q_handle,
+			&ring->reg_idx, &ring->txq_teid, ICE_NO_RESET,
+			tlan_ctx.vmvf_num, NULL);
+
+	return status;
 }
 
 int ice_vsi_cfg_single_txq(struct ice_vsi *vsi, struct ice_tx_ring **tx_rings,
@@ -1206,3 +1377,148 @@ ice_fill_txq_meta(const struct ice_vsi *vsi, struct ice_tx_ring *ring,
 		txq_meta->tc = tc;
 	}
 }
+
+/**
+ * ice_qp_reset_stats - Resets all stats for rings of given index
+ * @vsi: VSI that contains rings of interest
+ * @q_idx: ring index in array
+ */
+static void ice_qp_reset_stats(struct ice_vsi *vsi, u16 q_idx)
+{
+	struct ice_vsi_stats *vsi_stat;
+	struct ice_pf *pf;
+
+	pf = vsi->back;
+	if (!pf->vsi_stats)
+		return;
+
+	vsi_stat = pf->vsi_stats[vsi->idx];
+	if (!vsi_stat)
+		return;
+
+	memset(&vsi_stat->rx_ring_stats[q_idx]->rx_stats, 0,
+	       sizeof(vsi_stat->rx_ring_stats[q_idx]->rx_stats));
+	memset(&vsi_stat->tx_ring_stats[q_idx]->stats, 0,
+	       sizeof(vsi_stat->tx_ring_stats[q_idx]->stats));
+	if (vsi->xdp_rings)
+		memset(&vsi->xdp_rings[q_idx]->ring_stats->stats, 0,
+		       sizeof(vsi->xdp_rings[q_idx]->ring_stats->stats));
+}
+
+/**
+ * ice_qp_clean_rings - Cleans all the rings of a given index
+ * @vsi: VSI that contains rings of interest
+ * @q_idx: ring index in array
+ */
+static void ice_qp_clean_rings(struct ice_vsi *vsi, u16 q_idx)
+{
+	ice_clean_tx_ring(vsi->tx_rings[q_idx]);
+	if (vsi->xdp_rings)
+		ice_clean_tx_ring(vsi->xdp_rings[q_idx]);
+	ice_clean_rx_ring(vsi->rx_rings[q_idx]);
+}
+
+/**
+ * ice_qp_dis - Disables a queue pair
+ * @vsi: VSI of interest
+ * @q_idx: ring index in array
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int ice_qp_dis(struct ice_vsi *vsi, u16 q_idx)
+{
+	struct ice_txq_meta txq_meta = { };
+	struct ice_q_vector *q_vector;
+	struct ice_tx_ring *tx_ring;
+	struct ice_rx_ring *rx_ring;
+	int fail = 0;
+	int err;
+
+	if (q_idx >= vsi->num_rxq || q_idx >= vsi->num_txq)
+		return -EINVAL;
+
+	tx_ring = vsi->tx_rings[q_idx];
+	rx_ring = vsi->rx_rings[q_idx];
+	q_vector = rx_ring->q_vector;
+
+	synchronize_net();
+	netif_carrier_off(vsi->netdev);
+	netif_tx_stop_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
+
+	ice_qvec_dis_irq(vsi, rx_ring, q_vector);
+	ice_qvec_toggle_napi(vsi, q_vector, false);
+
+	ice_fill_txq_meta(vsi, tx_ring, &txq_meta);
+	err = ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, 0, tx_ring, &txq_meta);
+	if (!fail)
+		fail = err;
+	if (vsi->xdp_rings) {
+		struct ice_tx_ring *xdp_ring = vsi->xdp_rings[q_idx];
+
+		memset(&txq_meta, 0, sizeof(txq_meta));
+		ice_fill_txq_meta(vsi, xdp_ring, &txq_meta);
+		err = ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, 0, xdp_ring,
+					   &txq_meta);
+		if (!fail)
+			fail = err;
+	}
+
+	ice_vsi_ctrl_one_rx_ring(vsi, false, q_idx, false);
+	ice_qp_clean_rings(vsi, q_idx);
+	ice_qp_reset_stats(vsi, q_idx);
+
+	return fail;
+}
+
+/**
+ * ice_qp_ena - Enables a queue pair
+ * @vsi: VSI of interest
+ * @q_idx: ring index in array
+ *
+ * Returns 0 on success, negative on failure.
+ */
+int ice_qp_ena(struct ice_vsi *vsi, u16 q_idx)
+{
+	struct ice_q_vector *q_vector;
+	int fail = 0;
+	bool link_up;
+	int err;
+
+	err = ice_vsi_cfg_single_txq(vsi, vsi->tx_rings, q_idx);
+	if (!fail)
+		fail = err;
+
+	if (ice_is_xdp_ena_vsi(vsi)) {
+		struct ice_tx_ring *xdp_ring = vsi->xdp_rings[q_idx];
+
+		err = ice_vsi_cfg_single_txq(vsi, vsi->xdp_rings, q_idx);
+		if (!fail)
+			fail = err;
+		ice_set_ring_xdp(xdp_ring);
+		ice_tx_xsk_pool(vsi, q_idx);
+	}
+
+	err = ice_vsi_cfg_single_rxq(vsi, q_idx);
+	if (!fail)
+		fail = err;
+
+	q_vector = vsi->rx_rings[q_idx]->q_vector;
+	ice_qvec_cfg_msix(vsi, q_vector, q_idx);
+
+	err = ice_vsi_ctrl_one_rx_ring(vsi, true, q_idx, true);
+	if (!fail)
+		fail = err;
+
+	ice_qvec_toggle_napi(vsi, q_vector, true);
+	ice_qvec_ena_irq(vsi, q_vector);
+
+	/* make sure NAPI sees updated ice_{t,x}_ring::xsk_pool */
+	synchronize_net();
+	ice_get_link_status(vsi->port_info, &link_up);
+	if (link_up) {
+		netif_tx_start_queue(netdev_get_tx_queue(vsi->netdev, q_idx));
+		netif_carrier_on(vsi->netdev);
+	}
+
+	return fail;
+}