1 files changed, 464 insertions, 1 deletions

diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index d3b9f73ecba4..36780e7f05b7 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -8,7 +8,12 @@
 #include <linux/string.h>
 #include <linux/aer.h>
 #include <linux/etherdevice.h>
+#include <net/ip.h>
 
+#include "../libwx/wx_type.h"
+#include "../libwx/wx_hw.h"
+#include "txgbe_type.h"
+#include "txgbe_hw.h"
 #include "txgbe.h"
 
 char txgbe_driver_name[] = "txgbe";
@@ -30,13 +35,305 @@ static const struct pci_device_id txgbe_pci_tbl[] = {
 
 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
 
+static void txgbe_check_minimum_link(struct txgbe_adapter *adapter)
+{
+	struct pci_dev *pdev;
+
+	pdev = adapter->pdev;
+	pcie_print_link_status(pdev);
+}
+
+/**
+ * txgbe_enumerate_functions - Get the number of ports this device has
+ * @adapter: adapter structure
+ *
+ * This function enumerates the phsyical functions co-located on a single slot,
+ * in order to determine how many ports a device has. This is most useful in
+ * determining the required GT/s of PCIe bandwidth necessary for optimal
+ * performance.
+ **/
+static int txgbe_enumerate_functions(struct txgbe_adapter *adapter)
+{
+	struct pci_dev *entry, *pdev = adapter->pdev;
+	int physfns = 0;
+
+	list_for_each_entry(entry, &pdev->bus->devices, bus_list) {
+		/* When the devices on the bus don't all match our device ID,
+		 * we can't reliably determine the correct number of
+		 * functions. This can occur if a function has been direct
+		 * attached to a virtual machine using VT-d.
+		 */
+		if (entry->vendor != pdev->vendor ||
+		    entry->device != pdev->device)
+			return -EINVAL;
+
+		physfns++;
+	}
+
+	return physfns;
+}
+
+static void txgbe_sync_mac_table(struct txgbe_adapter *adapter)
+{
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
+	int i;
+
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		if (adapter->mac_table[i].state & TXGBE_MAC_STATE_MODIFIED) {
+			if (adapter->mac_table[i].state & TXGBE_MAC_STATE_IN_USE) {
+				wx_set_rar(wxhw, i,
+					   adapter->mac_table[i].addr,
+					   adapter->mac_table[i].pools,
+					   WX_PSR_MAC_SWC_AD_H_AV);
+			} else {
+				wx_clear_rar(wxhw, i);
+			}
+			adapter->mac_table[i].state &= ~(TXGBE_MAC_STATE_MODIFIED);
+		}
+	}
+}
+
+/* this function destroys the first RAR entry */
+static void txgbe_mac_set_default_filter(struct txgbe_adapter *adapter,
+					 u8 *addr)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+
+	memcpy(&adapter->mac_table[0].addr, addr, ETH_ALEN);
+	adapter->mac_table[0].pools = 1ULL;
+	adapter->mac_table[0].state = (TXGBE_MAC_STATE_DEFAULT |
+				       TXGBE_MAC_STATE_IN_USE);
+	wx_set_rar(wxhw, 0, adapter->mac_table[0].addr,
+		   adapter->mac_table[0].pools,
+		   WX_PSR_MAC_SWC_AD_H_AV);
+}
+
+static void txgbe_flush_sw_mac_table(struct txgbe_adapter *adapter)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	u32 i;
+
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+		adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+		memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+		adapter->mac_table[i].pools = 0;
+	}
+	txgbe_sync_mac_table(adapter);
+}
+
+static int txgbe_del_mac_filter(struct txgbe_adapter *adapter, u8 *addr, u16 pool)
+{
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	u32 i;
+
+	if (is_zero_ether_addr(addr))
+		return -EINVAL;
+
+	/* search table for addr, if found, set to 0 and sync */
+	for (i = 0; i < wxhw->mac.num_rar_entries; i++) {
+		if (ether_addr_equal(addr, adapter->mac_table[i].addr)) {
+			if (adapter->mac_table[i].pools & (1ULL << pool)) {
+				adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+				adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+				adapter->mac_table[i].pools &= ~(1ULL << pool);
+				txgbe_sync_mac_table(adapter);
+			}
+			return 0;
+		}
+
+		if (adapter->mac_table[i].pools != (1 << pool))
+			continue;
+		if (!ether_addr_equal(addr, adapter->mac_table[i].addr))
+			continue;
+
+		adapter->mac_table[i].state |= TXGBE_MAC_STATE_MODIFIED;
+		adapter->mac_table[i].state &= ~TXGBE_MAC_STATE_IN_USE;
+		memset(adapter->mac_table[i].addr, 0, ETH_ALEN);
+		adapter->mac_table[i].pools = 0;
+		txgbe_sync_mac_table(adapter);
+		return 0;
+	}
+	return -ENOMEM;
+}
+
+static void txgbe_up_complete(struct txgbe_adapter *adapter)
+{
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
+
+	wx_control_hw(wxhw, true);
+}
+
+static void txgbe_reset(struct txgbe_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct txgbe_hw *hw = &adapter->hw;
+	u8 old_addr[ETH_ALEN];
+	int err;
+
+	err = txgbe_reset_hw(hw);
+	if (err != 0)
+		dev_err(&adapter->pdev->dev, "Hardware Error: %d\n", err);
+
+	/* do not flush user set addresses */
+	memcpy(old_addr, &adapter->mac_table[0].addr, netdev->addr_len);
+	txgbe_flush_sw_mac_table(adapter);
+	txgbe_mac_set_default_filter(adapter, old_addr);
+}
+
+static void txgbe_disable_device(struct txgbe_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+
+	wx_disable_pcie_master(wxhw);
+	/* disable receives */
+	wx_disable_rx(wxhw);
+
+	netif_carrier_off(netdev);
+	netif_tx_disable(netdev);
+
+	if (wxhw->bus.func < 2)
+		wr32m(wxhw, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wxhw->bus.func), 0);
+	else
+		dev_err(&adapter->pdev->dev,
+			"%s: invalid bus lan id %d\n",
+			__func__, wxhw->bus.func);
+
+	if (!(((wxhw->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
+	      ((wxhw->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
+		/* disable mac transmiter */
+		wr32m(wxhw, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
+	}
+
+	/* Disable the Tx DMA engine */
+	wr32m(wxhw, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
+}
+
+static void txgbe_down(struct txgbe_adapter *adapter)
+{
+	txgbe_disable_device(adapter);
+	txgbe_reset(adapter);
+}
+
+/**
+ * txgbe_sw_init - Initialize general software structures (struct txgbe_adapter)
+ * @adapter: board private structure to initialize
+ **/
+static int txgbe_sw_init(struct txgbe_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
+	int err;
+
+	wxhw->hw_addr = adapter->io_addr;
+	wxhw->pdev = pdev;
+
+	/* PCI config space info */
+	err = wx_sw_init(wxhw);
+	if (err < 0) {
+		netif_err(adapter, probe, adapter->netdev,
+			  "read of internal subsystem device id failed\n");
+		return err;
+	}
+
+	switch (wxhw->device_id) {
+	case TXGBE_DEV_ID_SP1000:
+	case TXGBE_DEV_ID_WX1820:
+		wxhw->mac.type = wx_mac_sp;
+		break;
+	default:
+		wxhw->mac.type = wx_mac_unknown;
+		break;
+	}
+
+	wxhw->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
+	wxhw->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
+	wxhw->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
+	wxhw->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
+
+	adapter->mac_table = kcalloc(wxhw->mac.num_rar_entries,
+				     sizeof(struct txgbe_mac_addr),
+				     GFP_KERNEL);
+	if (!adapter->mac_table) {
+		netif_err(adapter, probe, adapter->netdev,
+			  "mac_table allocation failed\n");
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+/**
+ * txgbe_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).
+ **/
+static int txgbe_open(struct net_device *netdev)
+{
+	struct txgbe_adapter *adapter = netdev_priv(netdev);
+
+	txgbe_up_complete(adapter);
+
+	return 0;
+}
+
+/**
+ * txgbe_close_suspend - actions necessary to both suspend and close flows
+ * @adapter: the private adapter struct
+ *
+ * This function should contain the necessary work common to both suspending
+ * and closing of the device.
+ */
+static void txgbe_close_suspend(struct txgbe_adapter *adapter)
+{
+	txgbe_disable_device(adapter);
+}
+
+/**
+ * txgbe_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the drivers control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ **/
+static int txgbe_close(struct net_device *netdev)
+{
+	struct txgbe_adapter *adapter = netdev_priv(netdev);
+
+	txgbe_down(adapter);
+	wx_control_hw(&adapter->hw.wxhw, false);
+
+	return 0;
+}
+
 static void txgbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
 {
 	struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
 	struct net_device *netdev = adapter->netdev;
+	struct txgbe_hw *hw = &adapter->hw;
+	struct wx_hw *wxhw = &hw->wxhw;
 
 	netif_device_detach(netdev);
 
+	rtnl_lock();
+	if (netif_running(netdev))
+		txgbe_close_suspend(adapter);
+	rtnl_unlock();
+
+	wx_control_hw(wxhw, false);
+
 	pci_disable_device(pdev);
 }
 
@@ -52,6 +349,47 @@ static void txgbe_shutdown(struct pci_dev *pdev)
 	}
 }
 
+static netdev_tx_t txgbe_xmit_frame(struct sk_buff *skb,
+				    struct net_device *netdev)
+{
+	return NETDEV_TX_OK;
+}
+
+/**
+ * txgbe_set_mac - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ **/
+static int txgbe_set_mac(struct net_device *netdev, void *p)
+{
+	struct txgbe_adapter *adapter = netdev_priv(netdev);
+	struct wx_hw *wxhw = &adapter->hw.wxhw;
+	struct sockaddr *addr = p;
+	int retval;
+
+	retval = eth_prepare_mac_addr_change(netdev, addr);
+	if (retval)
+		return retval;
+
+	txgbe_del_mac_filter(adapter, wxhw->mac.addr, 0);
+	eth_hw_addr_set(netdev, addr->sa_data);
+	memcpy(wxhw->mac.addr, addr->sa_data, netdev->addr_len);
+
+	txgbe_mac_set_default_filter(adapter, wxhw->mac.addr);
+
+	return 0;
+}
+
+static const struct net_device_ops txgbe_netdev_ops = {
+	.ndo_open               = txgbe_open,
+	.ndo_stop               = txgbe_close,
+	.ndo_start_xmit         = txgbe_xmit_frame,
+	.ndo_validate_addr      = eth_validate_addr,
+	.ndo_set_mac_address    = txgbe_set_mac,
+};
+
 /**
  * txgbe_probe - Device Initialization Routine
  * @pdev: PCI device information struct
@@ -67,8 +405,16 @@ static int txgbe_probe(struct pci_dev *pdev,
 		       const struct pci_device_id __always_unused *ent)
 {
 	struct txgbe_adapter *adapter = NULL;
+	struct txgbe_hw *hw = NULL;
+	struct wx_hw *wxhw = NULL;
 	struct net_device *netdev;
-	int err;
+	int err, expected_gts;
+
+	u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
+	u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
+	u16 build = 0, major = 0, patch = 0;
+	u8 part_str[TXGBE_PBANUM_LENGTH];
+	u32 etrack_id = 0;
 
 	err = pci_enable_device_mem(pdev);
 	if (err)
@@ -107,6 +453,9 @@ static int txgbe_probe(struct pci_dev *pdev,
 	adapter = netdev_priv(netdev);
 	adapter->netdev = netdev;
 	adapter->pdev = pdev;
+	hw = &adapter->hw;
+	wxhw = &hw->wxhw;
+	adapter->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
 
 	adapter->io_addr = devm_ioremap(&pdev->dev,
 					pci_resource_start(pdev, 0),
@@ -116,12 +465,118 @@ static int txgbe_probe(struct pci_dev *pdev,
 		goto err_pci_release_regions;
 	}
 
+	netdev->netdev_ops = &txgbe_netdev_ops;
+
+	/* setup the private structure */
+	err = txgbe_sw_init(adapter);
+	if (err)
+		goto err_free_mac_table;
+
+	/* check if flash load is done after hw power up */
+	err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PERST);
+	if (err)
+		goto err_free_mac_table;
+	err = wx_check_flash_load(wxhw, TXGBE_SPI_ILDR_STATUS_PWRRST);
+	if (err)
+		goto err_free_mac_table;
+
+	err = wx_mng_present(wxhw);
+	if (err) {
+		dev_err(&pdev->dev, "Management capability is not present\n");
+		goto err_free_mac_table;
+	}
+
+	err = txgbe_reset_hw(hw);
+	if (err) {
+		dev_err(&pdev->dev, "HW Init failed: %d\n", err);
+		goto err_free_mac_table;
+	}
+
 	netdev->features |= NETIF_F_HIGHDMA;
 
+	/* make sure the EEPROM is good */
+	err = txgbe_validate_eeprom_checksum(hw, NULL);
+	if (err != 0) {
+		dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
+		wr32(wxhw, WX_MIS_RST, WX_MIS_RST_SW_RST);
+		err = -EIO;
+		goto err_free_mac_table;
+	}
+
+	eth_hw_addr_set(netdev, wxhw->mac.perm_addr);
+	txgbe_mac_set_default_filter(adapter, wxhw->mac.perm_addr);
+
+	/* Save off EEPROM version number and Option Rom version which
+	 * together make a unique identify for the eeprom
+	 */
+	wx_read_ee_hostif(wxhw,
+			  wxhw->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H,
+			  &eeprom_verh);
+	wx_read_ee_hostif(wxhw,
+			  wxhw->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L,
+			  &eeprom_verl);
+	etrack_id = (eeprom_verh << 16) | eeprom_verl;
+
+	wx_read_ee_hostif(wxhw,
+			  wxhw->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG,
+			  &offset);
+
+	/* Make sure offset to SCSI block is valid */
+	if (!(offset == 0x0) && !(offset == 0xffff)) {
+		wx_read_ee_hostif(wxhw, offset + 0x84, &eeprom_cfg_blkh);
+		wx_read_ee_hostif(wxhw, offset + 0x83, &eeprom_cfg_blkl);
+
+		/* Only display Option Rom if exist */
+		if (eeprom_cfg_blkl && eeprom_cfg_blkh) {
+			major = eeprom_cfg_blkl >> 8;
+			build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8);
+			patch = eeprom_cfg_blkh & 0x00ff;
+
+			snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
+				 "0x%08x, %d.%d.%d", etrack_id, major, build,
+				 patch);
+		} else {
+			snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
+				 "0x%08x", etrack_id);
+		}
+	} else {
+		snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id),
+			 "0x%08x", etrack_id);
+	}
+
+	err = register_netdev(netdev);
+	if (err)
+		goto err_release_hw;
+
 	pci_set_drvdata(pdev, adapter);
 
+	/* calculate the expected PCIe bandwidth required for optimal
+	 * performance. Note that some older parts will never have enough
+	 * bandwidth due to being older generation PCIe parts. We clamp these
+	 * parts to ensure that no warning is displayed, as this could confuse
+	 * users otherwise.
+	 */
+	expected_gts = txgbe_enumerate_functions(adapter) * 10;
+
+	/* don't check link if we failed to enumerate functions */
+	if (expected_gts > 0)
+		txgbe_check_minimum_link(adapter);
+	else
+		dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
+
+	/* First try to read PBA as a string */
+	err = txgbe_read_pba_string(hw, part_str, TXGBE_PBANUM_LENGTH);
+	if (err)
+		strncpy(part_str, "Unknown", TXGBE_PBANUM_LENGTH);
+
+	netif_info(adapter, probe, netdev, "%pM\n", netdev->dev_addr);
+
 	return 0;
 
+err_release_hw:
+	wx_control_hw(wxhw, false);
+err_free_mac_table:
+	kfree(adapter->mac_table);
 err_pci_release_regions:
 	pci_disable_pcie_error_reporting(pdev);
 	pci_release_selected_regions(pdev,
@@ -142,9 +597,17 @@ err_pci_disable_dev:
  **/
 static void txgbe_remove(struct pci_dev *pdev)
 {
+	struct txgbe_adapter *adapter = pci_get_drvdata(pdev);
+	struct net_device *netdev;
+
+	netdev = adapter->netdev;
+	unregister_netdev(netdev);
+
 	pci_release_selected_regions(pdev,
 				     pci_select_bars(pdev, IORESOURCE_MEM));
 
+	kfree(adapter->mac_table);
+
 	pci_disable_pcie_error_reporting(pdev);
 
 	pci_disable_device(pdev);