Merge branch 'next' into for-linus

Prepare input updates for 5.20 (or 6.0) merge window.

8 files changed, 45 insertions, 98 deletions

diff --git a/drivers/net/ethernet/intel/igc/igc.h b/drivers/net/ethernet/intel/igc/igc.h
index 3e386c38d016..1e7e7071f64d 100644
--- a/drivers/net/ethernet/intel/igc/igc.h
+++ b/drivers/net/ethernet/intel/igc/igc.h
@@ -264,7 +264,6 @@ int igc_reinit_queues(struct igc_adapter *adapter);
 void igc_write_rss_indir_tbl(struct igc_adapter *adapter);
 bool igc_has_link(struct igc_adapter *adapter);
 void igc_reset(struct igc_adapter *adapter);
-int igc_set_spd_dplx(struct igc_adapter *adapter, u32 spd, u8 dplx);
 void igc_update_stats(struct igc_adapter *adapter);
 void igc_disable_rx_ring(struct igc_ring *ring);
 void igc_enable_rx_ring(struct igc_ring *ring);
diff --git a/drivers/net/ethernet/intel/igc/igc_base.c b/drivers/net/ethernet/intel/igc/igc_base.c
index f068b66b8025..a15927e77272 100644
--- a/drivers/net/ethernet/intel/igc/igc_base.c
+++ b/drivers/net/ethernet/intel/igc/igc_base.c
@@ -182,8 +182,6 @@ static s32 igc_init_phy_params_base(struct igc_hw *hw)
 
 	igc_check_for_copper_link(hw);
 
-	phy->type = igc_phy_i225;
-
 out:
 	return ret_val;
 }
diff --git a/drivers/net/ethernet/intel/igc/igc_hw.h b/drivers/net/ethernet/intel/igc/igc_hw.h
index b1e72ec5f131..360644f33d5f 100644
--- a/drivers/net/ethernet/intel/igc/igc_hw.h
+++ b/drivers/net/ethernet/intel/igc/igc_hw.h
@@ -53,11 +53,6 @@ enum igc_mac_type {
 	igc_num_macs  /* List is 1-based, so subtract 1 for true count. */
 };
 
-enum igc_phy_type {
-	igc_phy_unknown = 0,
-	igc_phy_i225,
-};
-
 enum igc_media_type {
 	igc_media_type_unknown = 0,
 	igc_media_type_copper = 1,
@@ -138,8 +133,6 @@ struct igc_nvm_info {
 struct igc_phy_info {
 	struct igc_phy_operations ops;
 
-	enum igc_phy_type type;
-
 	u32 addr;
 	u32 id;
 	u32 reset_delay_us; /* in usec */
diff --git a/drivers/net/ethernet/intel/igc/igc_i225.c b/drivers/net/ethernet/intel/igc/igc_i225.c
index 66ea566488d1..59d5c467ea6e 100644
--- a/drivers/net/ethernet/intel/igc/igc_i225.c
+++ b/drivers/net/ethernet/intel/igc/igc_i225.c
@@ -156,8 +156,15 @@ void igc_release_swfw_sync_i225(struct igc_hw *hw, u16 mask)
 {
 	u32 swfw_sync;
 
-	while (igc_get_hw_semaphore_i225(hw))
-		; /* Empty */
+	/* Releasing the resource requires first getting the HW semaphore.
+	 * If we fail to get the semaphore, there is nothing we can do,
+	 * except log an error and quit. We are not allowed to hang here
+	 * indefinitely, as it may cause denial of service or system crash.
+	 */
+	if (igc_get_hw_semaphore_i225(hw)) {
+		hw_dbg("Failed to release SW_FW_SYNC.\n");
+		return;
+	}
 
 	swfw_sync = rd32(IGC_SW_FW_SYNC);
 	swfw_sync &= ~mask;
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 2f17f36e94fd..ae17af44fe02 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -505,6 +505,9 @@ int igc_setup_rx_resources(struct igc_ring *rx_ring)
 	u8 index = rx_ring->queue_index;
 	int size, desc_len, res;
 
+	/* XDP RX-queue info */
+	if (xdp_rxq_info_is_reg(&rx_ring->xdp_rxq))
+		xdp_rxq_info_unreg(&rx_ring->xdp_rxq);
 	res = xdp_rxq_info_reg(&rx_ring->xdp_rxq, ndev, index,
 			       rx_ring->q_vector->napi.napi_id);
 	if (res < 0) {
@@ -2446,19 +2449,20 @@ static int igc_clean_rx_irq(struct igc_q_vector *q_vector, const int budget)
 static struct sk_buff *igc_construct_skb_zc(struct igc_ring *ring,
 					    struct xdp_buff *xdp)
 {
+	unsigned int totalsize = xdp->data_end - xdp->data_meta;
 	unsigned int metasize = xdp->data - xdp->data_meta;
-	unsigned int datasize = xdp->data_end - xdp->data;
-	unsigned int totalsize = metasize + datasize;
 	struct sk_buff *skb;
 
-	skb = __napi_alloc_skb(&ring->q_vector->napi,
-			       xdp->data_end - xdp->data_hard_start,
+	net_prefetch(xdp->data_meta);
+
+	skb = __napi_alloc_skb(&ring->q_vector->napi, totalsize,
 			       GFP_ATOMIC | __GFP_NOWARN);
 	if (unlikely(!skb))
 		return NULL;
 
-	skb_reserve(skb, xdp->data_meta - xdp->data_hard_start);
-	memcpy(__skb_put(skb, totalsize), xdp->data_meta, totalsize);
+	memcpy(__skb_put(skb, totalsize), xdp->data_meta,
+	       ALIGN(totalsize, sizeof(long)));
+
 	if (metasize) {
 		skb_metadata_set(skb, metasize);
 		__skb_pull(skb, metasize);
@@ -6183,56 +6187,6 @@ u32 igc_rd32(struct igc_hw *hw, u32 reg)
 	return value;
 }
 
-int igc_set_spd_dplx(struct igc_adapter *adapter, u32 spd, u8 dplx)
-{
-	struct igc_mac_info *mac = &adapter->hw.mac;
-
-	mac->autoneg = false;
-
-	/* Make sure dplx is at most 1 bit and lsb of speed is not set
-	 * for the switch() below to work
-	 */
-	if ((spd & 1) || (dplx & ~1))
-		goto err_inval;
-
-	switch (spd + dplx) {
-	case SPEED_10 + DUPLEX_HALF:
-		mac->forced_speed_duplex = ADVERTISE_10_HALF;
-		break;
-	case SPEED_10 + DUPLEX_FULL:
-		mac->forced_speed_duplex = ADVERTISE_10_FULL;
-		break;
-	case SPEED_100 + DUPLEX_HALF:
-		mac->forced_speed_duplex = ADVERTISE_100_HALF;
-		break;
-	case SPEED_100 + DUPLEX_FULL:
-		mac->forced_speed_duplex = ADVERTISE_100_FULL;
-		break;
-	case SPEED_1000 + DUPLEX_FULL:
-		mac->autoneg = true;
-		adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
-		break;
-	case SPEED_1000 + DUPLEX_HALF: /* not supported */
-		goto err_inval;
-	case SPEED_2500 + DUPLEX_FULL:
-		mac->autoneg = true;
-		adapter->hw.phy.autoneg_advertised = ADVERTISE_2500_FULL;
-		break;
-	case SPEED_2500 + DUPLEX_HALF: /* not supported */
-	default:
-		goto err_inval;
-	}
-
-	/* clear MDI, MDI(-X) override is only allowed when autoneg enabled */
-	adapter->hw.phy.mdix = AUTO_ALL_MODES;
-
-	return 0;
-
-err_inval:
-	netdev_err(adapter->netdev, "Unsupported Speed/Duplex configuration\n");
-	return -EINVAL;
-}
-
 /**
  * igc_probe - Device Initialization Routine
  * @pdev: PCI device information struct
@@ -6251,23 +6205,17 @@ static int igc_probe(struct pci_dev *pdev,
 	struct net_device *netdev;
 	struct igc_hw *hw;
 	const struct igc_info *ei = igc_info_tbl[ent->driver_data];
-	int err, pci_using_dac;
+	int err;
 
 	err = pci_enable_device_mem(pdev);
 	if (err)
 		return err;
 
-	pci_using_dac = 0;
 	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
-	if (!err) {
-		pci_using_dac = 1;
-	} else {
-		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
-		if (err) {
-			dev_err(&pdev->dev,
-				"No usable DMA configuration, aborting\n");
-			goto err_dma;
-		}
+	if (err) {
+		dev_err(&pdev->dev,
+			"No usable DMA configuration, aborting\n");
+		goto err_dma;
 	}
 
 	err = pci_request_mem_regions(pdev, igc_driver_name);
@@ -6367,8 +6315,7 @@ static int igc_probe(struct pci_dev *pdev,
 	netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
 	netdev->hw_features |= netdev->features;
 
-	if (pci_using_dac)
-		netdev->features |= NETIF_F_HIGHDMA;
+	netdev->features |= NETIF_F_HIGHDMA;
 
 	netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
 	netdev->mpls_features |= NETIF_F_HW_CSUM;
diff --git a/drivers/net/ethernet/intel/igc/igc_phy.c b/drivers/net/ethernet/intel/igc/igc_phy.c
index 40dbf4b43234..53b77c969c85 100644
--- a/drivers/net/ethernet/intel/igc/igc_phy.c
+++ b/drivers/net/ethernet/intel/igc/igc_phy.c
@@ -141,24 +141,14 @@ void igc_power_down_phy_copper(struct igc_hw *hw)
  * igc_check_downshift - Checks whether a downshift in speed occurred
  * @hw: pointer to the HW structure
  *
- * Success returns 0, Failure returns 1
- *
  * A downshift is detected by querying the PHY link health.
  */
-s32 igc_check_downshift(struct igc_hw *hw)
+void igc_check_downshift(struct igc_hw *hw)
 {
 	struct igc_phy_info *phy = &hw->phy;
-	s32 ret_val;
 
-	switch (phy->type) {
-	case igc_phy_i225:
-	default:
-		/* speed downshift not supported */
-		phy->speed_downgraded = false;
-		ret_val = 0;
-	}
-
-	return ret_val;
+	/* speed downshift not supported */
+	phy->speed_downgraded = false;
 }
 
 /**
@@ -581,7 +571,7 @@ static s32 igc_read_phy_reg_mdic(struct igc_hw *hw, u32 offset, u16 *data)
 	 * the lower time out
 	 */
 	for (i = 0; i < IGC_GEN_POLL_TIMEOUT; i++) {
-		usleep_range(500, 1000);
+		udelay(50);
 		mdic = rd32(IGC_MDIC);
 		if (mdic & IGC_MDIC_READY)
 			break;
@@ -638,7 +628,7 @@ static s32 igc_write_phy_reg_mdic(struct igc_hw *hw, u32 offset, u16 data)
 	 * the lower time out
 	 */
 	for (i = 0; i < IGC_GEN_POLL_TIMEOUT; i++) {
-		usleep_range(500, 1000);
+		udelay(50);
 		mdic = rd32(IGC_MDIC);
 		if (mdic & IGC_MDIC_READY)
 			break;
diff --git a/drivers/net/ethernet/intel/igc/igc_phy.h b/drivers/net/ethernet/intel/igc/igc_phy.h
index 1b031372d206..832a7e359f18 100644
--- a/drivers/net/ethernet/intel/igc/igc_phy.h
+++ b/drivers/net/ethernet/intel/igc/igc_phy.h
@@ -11,7 +11,7 @@ s32 igc_phy_hw_reset(struct igc_hw *hw);
 s32 igc_get_phy_id(struct igc_hw *hw);
 s32 igc_phy_has_link(struct igc_hw *hw, u32 iterations,
 		     u32 usec_interval, bool *success);
-s32 igc_check_downshift(struct igc_hw *hw);
+void igc_check_downshift(struct igc_hw *hw);
 s32 igc_setup_copper_link(struct igc_hw *hw);
 void igc_power_up_phy_copper(struct igc_hw *hw);
 void igc_power_down_phy_copper(struct igc_hw *hw);
diff --git a/drivers/net/ethernet/intel/igc/igc_ptp.c b/drivers/net/ethernet/intel/igc/igc_ptp.c
index 0d6e3215e98f..653e9f1e35b5 100644
--- a/drivers/net/ethernet/intel/igc/igc_ptp.c
+++ b/drivers/net/ethernet/intel/igc/igc_ptp.c
@@ -992,6 +992,17 @@ static void igc_ptp_time_restore(struct igc_adapter *adapter)
 	igc_ptp_write_i225(adapter, &ts);
 }
 
+static void igc_ptm_stop(struct igc_adapter *adapter)
+{
+	struct igc_hw *hw = &adapter->hw;
+	u32 ctrl;
+
+	ctrl = rd32(IGC_PTM_CTRL);
+	ctrl &= ~IGC_PTM_CTRL_EN;
+
+	wr32(IGC_PTM_CTRL, ctrl);
+}
+
 /**
  * igc_ptp_suspend - Disable PTP work items and prepare for suspend
  * @adapter: Board private structure
@@ -1009,8 +1020,10 @@ void igc_ptp_suspend(struct igc_adapter *adapter)
 	adapter->ptp_tx_skb = NULL;
 	clear_bit_unlock(__IGC_PTP_TX_IN_PROGRESS, &adapter->state);
 
-	if (pci_device_is_present(adapter->pdev))
+	if (pci_device_is_present(adapter->pdev)) {
 		igc_ptp_time_save(adapter);
+		igc_ptm_stop(adapter);
+	}
 }
 
 /**