ice: Move common functions out of ice_main.c part 2/7

This patch continues the code move out of ice_main.c

The following top level functions (and related dependency functions) were
moved to ice_lib.c:
ice_vsi_start_rx_rings
ice_vsi_stop_rx_rings
ice_vsi_stop_tx_rings
ice_vsi_cfg_rxqs
ice_vsi_cfg_txqs
ice_vsi_cfg_msix

Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 22 insertions, 519 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 2673430ec2e9..ececf3dabf7e 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -1845,77 +1845,6 @@ static void ice_vsi_free_irq(struct ice_vsi *vsi)
 }
 
 /**
- * ice_vsi_cfg_msix - MSIX mode Interrupt Config in the HW
- * @vsi: the VSI being configured
- */
-static void ice_vsi_cfg_msix(struct ice_vsi *vsi)
-{
-	struct ice_pf *pf = vsi->back;
-	u16 vector = vsi->base_vector;
-	struct ice_hw *hw = &pf->hw;
-	u32 txq = 0, rxq = 0;
-	int i, q, itr;
-	u8 itr_gran;
-
-	for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
-		struct ice_q_vector *q_vector = vsi->q_vectors[i];
-
-		itr_gran = hw->itr_gran_200;
-
-		if (q_vector->num_ring_rx) {
-			q_vector->rx.itr =
-				ITR_TO_REG(vsi->rx_rings[rxq]->rx_itr_setting,
-					   itr_gran);
-			q_vector->rx.latency_range = ICE_LOW_LATENCY;
-		}
-
-		if (q_vector->num_ring_tx) {
-			q_vector->tx.itr =
-				ITR_TO_REG(vsi->tx_rings[txq]->tx_itr_setting,
-					   itr_gran);
-			q_vector->tx.latency_range = ICE_LOW_LATENCY;
-		}
-		wr32(hw, GLINT_ITR(ICE_RX_ITR, vector), q_vector->rx.itr);
-		wr32(hw, GLINT_ITR(ICE_TX_ITR, vector), q_vector->tx.itr);
-
-		/* Both Transmit Queue Interrupt Cause Control register
-		 * and Receive Queue Interrupt Cause control register
-		 * expects MSIX_INDX field to be the vector index
-		 * within the function space and not the absolute
-		 * vector index across PF or across device.
-		 * For SR-IOV VF VSIs queue vector index always starts
-		 * with 1 since first vector index(0) is used for OICR
-		 * in VF space. Since VMDq and other PF VSIs are withtin
-		 * the PF function space, use the vector index thats
-		 * tracked for this PF.
-		 */
-		for (q = 0; q < q_vector->num_ring_tx; q++) {
-			u32 val;
-
-			itr = ICE_TX_ITR;
-			val = QINT_TQCTL_CAUSE_ENA_M |
-			      (itr << QINT_TQCTL_ITR_INDX_S)  |
-			      (vector << QINT_TQCTL_MSIX_INDX_S);
-			wr32(hw, QINT_TQCTL(vsi->txq_map[txq]), val);
-			txq++;
-		}
-
-		for (q = 0; q < q_vector->num_ring_rx; q++) {
-			u32 val;
-
-			itr = ICE_RX_ITR;
-			val = QINT_RQCTL_CAUSE_ENA_M |
-			      (itr << QINT_RQCTL_ITR_INDX_S)  |
-			      (vector << QINT_RQCTL_MSIX_INDX_S);
-			wr32(hw, QINT_RQCTL(vsi->rxq_map[rxq]), val);
-			rxq++;
-		}
-	}
-
-	ice_flush(hw);
-}
-
-/**
  * ice_ena_misc_vector - enable the non-queue interrupts
  * @pf: board private structure
  */
@@ -3967,248 +3896,6 @@ static int ice_restore_vlan(struct ice_vsi *vsi)
 }
 
 /**
- * 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.
- */
-static void
-ice_setup_tx_ctx(struct ice_ring *ring, struct ice_tlan_ctx *tlan_ctx, u16 pf_q)
-{
-	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;
-
-	/* PF number */
-	tlan_ctx->pf_num = hw->pf_id;
-
-	/* queue belongs to a specific VSI type
-	 * VF / VM index should be programmed per vmvf_type setting:
-	 * for vmvf_type = VF, it is VF number between 0-256
-	 * for vmvf_type = VM, it is VM number between 0-767
-	 * for PF or EMP this field should be set to zero
-	 */
-	switch (vsi->type) {
-	case ICE_VSI_PF:
-		tlan_ctx->vmvf_type = ICE_TLAN_CTX_VMVF_TYPE_PF;
-		break;
-	default:
-		return;
-	}
-
-	/* make sure the context is associated with the right VSI */
-	tlan_ctx->src_vsi = vsi->vsi_num;
-
-	tlan_ctx->tso_ena = ICE_TX_LEGACY;
-	tlan_ctx->tso_qnum = pf_q;
-
-	/* Legacy or Advanced Host Interface:
-	 * 0: Advanced Host Interface
-	 * 1: Legacy Host Interface
-	 */
-	tlan_ctx->legacy_int = ICE_TX_LEGACY;
-}
-
-/**
- * ice_vsi_cfg_txqs - Configure the VSI for Tx
- * @vsi: the VSI being configured
- *
- * Return 0 on success and a negative value on error
- * Configure the Tx VSI for operation.
- */
-static int ice_vsi_cfg_txqs(struct ice_vsi *vsi)
-{
-	struct ice_aqc_add_tx_qgrp *qg_buf;
-	struct ice_aqc_add_txqs_perq *txq;
-	struct ice_pf *pf = vsi->back;
-	enum ice_status status;
-	u16 buf_len, i, pf_q;
-	int err = 0, tc = 0;
-	u8 num_q_grps;
-
-	buf_len = sizeof(struct ice_aqc_add_tx_qgrp);
-	qg_buf = devm_kzalloc(&pf->pdev->dev, buf_len, GFP_KERNEL);
-	if (!qg_buf)
-		return -ENOMEM;
-
-	if (vsi->num_txq > ICE_MAX_TXQ_PER_TXQG) {
-		err = -EINVAL;
-		goto err_cfg_txqs;
-	}
-	qg_buf->num_txqs = 1;
-	num_q_grps = 1;
-
-	/* set up and configure the tx queues */
-	ice_for_each_txq(vsi, i) {
-		struct ice_tlan_ctx tlan_ctx = { 0 };
-
-		pf_q = vsi->txq_map[i];
-		ice_setup_tx_ctx(vsi->tx_rings[i], &tlan_ctx, pf_q);
-		/* copy context contents into the qg_buf */
-		qg_buf->txqs[0].txq_id = cpu_to_le16(pf_q);
-		ice_set_ctx((u8 *)&tlan_ctx, qg_buf->txqs[0].txq_ctx,
-			    ice_tlan_ctx_info);
-
-		/* init queue specific tail reg. It is referred as transmit
-		 * comm scheduler queue doorbell.
-		 */
-		vsi->tx_rings[i]->tail = pf->hw.hw_addr + QTX_COMM_DBELL(pf_q);
-		status = ice_ena_vsi_txq(vsi->port_info, vsi->vsi_num, tc,
-					 num_q_grps, qg_buf, buf_len, NULL);
-		if (status) {
-			dev_err(&vsi->back->pdev->dev,
-				"Failed to set LAN Tx queue context, error: %d\n",
-				status);
-			err = -ENODEV;
-			goto err_cfg_txqs;
-		}
-
-		/* Add Tx Queue TEID into the VSI tx ring from the response
-		 * This will complete configuring and enabling the queue.
-		 */
-		txq = &qg_buf->txqs[0];
-		if (pf_q == le16_to_cpu(txq->txq_id))
-			vsi->tx_rings[i]->txq_teid =
-				le32_to_cpu(txq->q_teid);
-	}
-err_cfg_txqs:
-	devm_kfree(&pf->pdev->dev, qg_buf);
-	return err;
-}
-
-/**
- * ice_setup_rx_ctx - Configure a receive ring context
- * @ring: The Rx ring to configure
- *
- * Configure the Rx descriptor ring in RLAN context.
- */
-static int ice_setup_rx_ctx(struct ice_ring *ring)
-{
-	struct ice_vsi *vsi = ring->vsi;
-	struct ice_hw *hw = &vsi->back->hw;
-	u32 rxdid = ICE_RXDID_FLEX_NIC;
-	struct ice_rlan_ctx rlan_ctx;
-	u32 regval;
-	u16 pf_q;
-	int err;
-
-	/* what is RX queue number in global space of 2K rx queues */
-	pf_q = vsi->rxq_map[ring->q_index];
-
-	/* clear the context structure first */
-	memset(&rlan_ctx, 0, sizeof(rlan_ctx));
-
-	rlan_ctx.base = ring->dma >> ICE_RLAN_BASE_S;
-
-	rlan_ctx.qlen = ring->count;
-
-	/* Receive Packet Data Buffer Size.
-	 * The Packet Data Buffer Size is defined in 128 byte units.
-	 */
-	rlan_ctx.dbuf = vsi->rx_buf_len >> ICE_RLAN_CTX_DBUF_S;
-
-	/* use 32 byte descriptors */
-	rlan_ctx.dsize = 1;
-
-	/* Strip the Ethernet CRC bytes before the packet is posted to host
-	 * memory.
-	 */
-	rlan_ctx.crcstrip = 1;
-
-	/* L2TSEL flag defines the reported L2 Tags in the receive descriptor */
-	rlan_ctx.l2tsel = 1;
-
-	rlan_ctx.dtype = ICE_RX_DTYPE_NO_SPLIT;
-	rlan_ctx.hsplit_0 = ICE_RLAN_RX_HSPLIT_0_NO_SPLIT;
-	rlan_ctx.hsplit_1 = ICE_RLAN_RX_HSPLIT_1_NO_SPLIT;
-
-	/* This controls whether VLAN is stripped from inner headers
-	 * The VLAN in the inner L2 header is stripped to the receive
-	 * descriptor if enabled by this flag.
-	 */
-	rlan_ctx.showiv = 0;
-
-	/* Max packet size for this queue - must not be set to a larger value
-	 * than 5 x DBUF
-	 */
-	rlan_ctx.rxmax = min_t(u16, vsi->max_frame,
-			       ICE_MAX_CHAINED_RX_BUFS * vsi->rx_buf_len);
-
-	/* Rx queue threshold in units of 64 */
-	rlan_ctx.lrxqthresh = 1;
-
-	 /* Enable Flexible Descriptors in the queue context which
-	  * allows this driver to select a specific receive descriptor format
-	  */
-	regval = rd32(hw, QRXFLXP_CNTXT(pf_q));
-	regval |= (rxdid << QRXFLXP_CNTXT_RXDID_IDX_S) &
-		QRXFLXP_CNTXT_RXDID_IDX_M;
-
-	/* increasing context priority to pick up profile id;
-	 * default is 0x01; setting to 0x03 to ensure profile
-	 * is programming if prev context is of same priority
-	 */
-	regval |= (0x03 << QRXFLXP_CNTXT_RXDID_PRIO_S) &
-		QRXFLXP_CNTXT_RXDID_PRIO_M;
-
-	wr32(hw, QRXFLXP_CNTXT(pf_q), regval);
-
-	/* Absolute queue number out of 2K needs to be passed */
-	err = ice_write_rxq_ctx(hw, &rlan_ctx, pf_q);
-	if (err) {
-		dev_err(&vsi->back->pdev->dev,
-			"Failed to set LAN Rx queue context for absolute Rx queue %d error: %d\n",
-			pf_q, err);
-		return -EIO;
-	}
-
-	/* init queue specific tail register */
-	ring->tail = hw->hw_addr + QRX_TAIL(pf_q);
-	writel(0, ring->tail);
-	ice_alloc_rx_bufs(ring, ICE_DESC_UNUSED(ring));
-
-	return 0;
-}
-
-/**
- * ice_vsi_cfg_rxqs - Configure the VSI for Rx
- * @vsi: the VSI being configured
- *
- * Return 0 on success and a negative value on error
- * Configure the Rx VSI for operation.
- */
-static int ice_vsi_cfg_rxqs(struct ice_vsi *vsi)
-{
-	int err = 0;
-	u16 i;
-
-	if (vsi->netdev && vsi->netdev->mtu > ETH_DATA_LEN)
-		vsi->max_frame = vsi->netdev->mtu +
-			ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
-	else
-		vsi->max_frame = ICE_RXBUF_2048;
-
-	vsi->rx_buf_len = ICE_RXBUF_2048;
-	/* set up individual rings */
-	for (i = 0; i < vsi->num_rxq && !err; i++)
-		err = ice_setup_rx_ctx(vsi->rx_rings[i]);
-
-	if (err) {
-		dev_err(&vsi->back->pdev->dev, "ice_setup_rx_ctx failed\n");
-		return -EIO;
-	}
-	return err;
-}
-
-/**
  * ice_vsi_cfg - Setup the VSI
  * @vsi: the VSI being configured
  *
@@ -4233,207 +3920,6 @@ static int ice_vsi_cfg(struct ice_vsi *vsi)
 }
 
 /**
- * ice_vsi_stop_tx_rings - Disable Tx rings
- * @vsi: the VSI being configured
- */
-static int ice_vsi_stop_tx_rings(struct ice_vsi *vsi)
-{
-	struct ice_pf *pf = vsi->back;
-	struct ice_hw *hw = &pf->hw;
-	enum ice_status status;
-	u32 *q_teids, val;
-	u16 *q_ids, i;
-	int err = 0;
-
-	if (vsi->num_txq > ICE_LAN_TXQ_MAX_QDIS)
-		return -EINVAL;
-
-	q_teids = devm_kcalloc(&pf->pdev->dev, vsi->num_txq, sizeof(*q_teids),
-			       GFP_KERNEL);
-	if (!q_teids)
-		return -ENOMEM;
-
-	q_ids = devm_kcalloc(&pf->pdev->dev, vsi->num_txq, sizeof(*q_ids),
-			     GFP_KERNEL);
-	if (!q_ids) {
-		err = -ENOMEM;
-		goto err_alloc_q_ids;
-	}
-
-	/* set up the tx queue list to be disabled */
-	ice_for_each_txq(vsi, i) {
-		u16 v_idx;
-
-		if (!vsi->tx_rings || !vsi->tx_rings[i]) {
-			err = -EINVAL;
-			goto err_out;
-		}
-
-		q_ids[i] = vsi->txq_map[i];
-		q_teids[i] = vsi->tx_rings[i]->txq_teid;
-
-		/* clear cause_ena bit for disabled queues */
-		val = rd32(hw, QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
-		val &= ~QINT_TQCTL_CAUSE_ENA_M;
-		wr32(hw, QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
-
-		/* software is expected to wait for 100 ns */
-		ndelay(100);
-
-		/* trigger a software interrupt for the vector associated to
-		 * the queue to schedule napi handler
-		 */
-		v_idx = vsi->tx_rings[i]->q_vector->v_idx;
-		wr32(hw, GLINT_DYN_CTL(vsi->base_vector + v_idx),
-		     GLINT_DYN_CTL_SWINT_TRIG_M | GLINT_DYN_CTL_INTENA_MSK_M);
-	}
-	status = ice_dis_vsi_txq(vsi->port_info, vsi->num_txq, q_ids, q_teids,
-				 NULL);
-	/* if the disable queue command was exercised during an active reset
-	 * flow, ICE_ERR_RESET_ONGOING is returned. This is not an error as
-	 * the reset operation disables queues at the hardware level anyway.
-	 */
-	if (status == ICE_ERR_RESET_ONGOING) {
-		dev_dbg(&pf->pdev->dev,
-			"Reset in progress. LAN Tx queues already disabled\n");
-	} else if (status) {
-		dev_err(&pf->pdev->dev,
-			"Failed to disable LAN Tx queues, error: %d\n",
-			status);
-		err = -ENODEV;
-	}
-
-err_out:
-	devm_kfree(&pf->pdev->dev, q_ids);
-
-err_alloc_q_ids:
-	devm_kfree(&pf->pdev->dev, q_teids);
-
-	return err;
-}
-
-/**
- * ice_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
- * @pf: the PF being configured
- * @pf_q: the PF queue
- * @ena: enable or disable state of the queue
- *
- * This routine will wait for the given Rx queue of the PF to reach the
- * enabled or disabled state.
- * Returns -ETIMEDOUT in case of failing to reach the requested state after
- * multiple retries; else will return 0 in case of success.
- */
-static int ice_pf_rxq_wait(struct ice_pf *pf, int pf_q, bool ena)
-{
-	int i;
-
-	for (i = 0; i < ICE_Q_WAIT_RETRY_LIMIT; i++) {
-		u32 rx_reg = rd32(&pf->hw, QRX_CTRL(pf_q));
-
-		if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
-			break;
-
-		usleep_range(10, 20);
-	}
-	if (i >= ICE_Q_WAIT_RETRY_LIMIT)
-		return -ETIMEDOUT;
-
-	return 0;
-}
-
-/**
- * ice_vsi_ctrl_rx_rings - Start or stop a VSI's rx rings
- * @vsi: the VSI being configured
- * @ena: start or stop the rx rings
- */
-static int ice_vsi_ctrl_rx_rings(struct ice_vsi *vsi, bool ena)
-{
-	struct ice_pf *pf = vsi->back;
-	struct ice_hw *hw = &pf->hw;
-	int i, j, ret = 0;
-
-	for (i = 0; i < vsi->num_rxq; i++) {
-		int pf_q = vsi->rxq_map[i];
-		u32 rx_reg;
-
-		for (j = 0; j < ICE_Q_WAIT_MAX_RETRY; j++) {
-			rx_reg = rd32(hw, QRX_CTRL(pf_q));
-			if (((rx_reg >> QRX_CTRL_QENA_REQ_S) & 1) ==
-			    ((rx_reg >> QRX_CTRL_QENA_STAT_S) & 1))
-				break;
-			usleep_range(1000, 2000);
-		}
-
-		/* Skip if the queue is already in the requested state */
-		if (ena == !!(rx_reg & QRX_CTRL_QENA_STAT_M))
-			continue;
-
-		/* turn on/off the queue */
-		if (ena)
-			rx_reg |= QRX_CTRL_QENA_REQ_M;
-		else
-			rx_reg &= ~QRX_CTRL_QENA_REQ_M;
-		wr32(hw, QRX_CTRL(pf_q), rx_reg);
-
-		/* wait for the change to finish */
-		ret = ice_pf_rxq_wait(pf, pf_q, ena);
-		if (ret) {
-			dev_err(&pf->pdev->dev,
-				"VSI idx %d Rx ring %d %sable timeout\n",
-				vsi->idx, pf_q, (ena ? "en" : "dis"));
-			break;
-		}
-	}
-
-	return ret;
-}
-
-/**
- * ice_vsi_start_rx_rings - start VSI's rx rings
- * @vsi: the VSI whose rings are to be started
- *
- * Returns 0 on success and a negative value on error
- */
-static int ice_vsi_start_rx_rings(struct ice_vsi *vsi)
-{
-	return ice_vsi_ctrl_rx_rings(vsi, true);
-}
-
-/**
- * ice_vsi_stop_rx_rings - stop VSI's rx rings
- * @vsi: the VSI
- *
- * Returns 0 on success and a negative value on error
- */
-static int ice_vsi_stop_rx_rings(struct ice_vsi *vsi)
-{
-	return ice_vsi_ctrl_rx_rings(vsi, false);
-}
-
-/**
- * ice_vsi_stop_tx_rx_rings - stop VSI's tx and rx rings
- * @vsi: the VSI
- * Returns 0 on success and a negative value on error
- */
-static int ice_vsi_stop_tx_rx_rings(struct ice_vsi *vsi)
-{
-	int err_tx, err_rx;
-
-	err_tx = ice_vsi_stop_tx_rings(vsi);
-	if (err_tx)
-		dev_dbg(&vsi->back->pdev->dev, "Failed to disable Tx rings\n");
-
-	err_rx = ice_vsi_stop_rx_rings(vsi);
-	if (err_rx)
-		dev_dbg(&vsi->back->pdev->dev, "Failed to disable Rx rings\n");
-
-	if (err_tx || err_rx)
-		return -EIO;
-
-	return 0;
-}
-
-/**
  * ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI
  * @vsi: the VSI being configured
  */
@@ -4822,7 +4308,7 @@ static void ice_napi_disable_all(struct ice_vsi *vsi)
  */
 int ice_down(struct ice_vsi *vsi)
 {
-	int i, err;
+	int i, tx_err, rx_err;
 
 	/* Caller of this function is expected to set the
 	 * vsi->state __ICE_DOWN bit
@@ -4833,7 +4319,18 @@ int ice_down(struct ice_vsi *vsi)
 	}
 
 	ice_vsi_dis_irq(vsi);
-	err = ice_vsi_stop_tx_rx_rings(vsi);
+	tx_err = ice_vsi_stop_tx_rings(vsi);
+	if (tx_err)
+		netdev_err(vsi->netdev,
+			   "Failed stop Tx rings, VSI %d error %d\n",
+			   vsi->vsi_num, tx_err);
+
+	rx_err = ice_vsi_stop_rx_rings(vsi);
+	if (rx_err)
+		netdev_err(vsi->netdev,
+			   "Failed stop Rx rings, VSI %d error %d\n",
+			   vsi->vsi_num, rx_err);
+
 	ice_napi_disable_all(vsi);
 
 	ice_for_each_txq(vsi, i)
@@ -4842,10 +4339,14 @@ int ice_down(struct ice_vsi *vsi)
 	ice_for_each_rxq(vsi, i)
 		ice_clean_rx_ring(vsi->rx_rings[i]);
 
-	if (err)
-		netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n",
+	if (tx_err || rx_err) {
+		netdev_err(vsi->netdev,
+			   "Failed to close VSI 0x%04X on switch 0x%04X\n",
 			   vsi->vsi_num, vsi->vsw->sw_id);
-	return err;
+		return -EIO;
+	}
+
+	return 0;
 }
 
 /**
@@ -4865,6 +4366,7 @@ static int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
 	}
 
 	ice_for_each_txq(vsi, i) {
+		vsi->tx_rings[i]->netdev = vsi->netdev;
 		err = ice_setup_tx_ring(vsi->tx_rings[i]);
 		if (err)
 			break;
@@ -4890,6 +4392,7 @@ static int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
 	}
 
 	ice_for_each_rxq(vsi, i) {
+		vsi->rx_rings[i]->netdev = vsi->netdev;
 		err = ice_setup_rx_ring(vsi->rx_rings[i]);
 		if (err)
 			break;