blob: 36780e7f05b7e05349fb6e83bb9d4752969a36d9 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
#include <linux/types.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#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";
/* txgbe_pci_tbl - PCI Device ID Table
*
* Wildcard entries (PCI_ANY_ID) should come last
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id txgbe_pci_tbl[] = {
{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0},
{ PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0},
/* required last entry */
{ .device = 0 }
};
#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);
}
static void txgbe_shutdown(struct pci_dev *pdev)
{
bool wake;
txgbe_dev_shutdown(pdev, &wake);
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, wake);
pci_set_power_state(pdev, PCI_D3hot);
}
}
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
* @ent: entry in txgbe_pci_tbl
*
* Returns 0 on success, negative on failure
*
* txgbe_probe initializes an adapter identified by a pci_dev structure.
* The OS initialization, configuring of the adapter private structure,
* and a hardware reset occur.
**/
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, 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)
return err;
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
if (err) {
dev_err(&pdev->dev,
"No usable DMA configuration, aborting\n");
goto err_pci_disable_dev;
}
err = pci_request_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM),
txgbe_driver_name);
if (err) {
dev_err(&pdev->dev,
"pci_request_selected_regions failed 0x%x\n", err);
goto err_pci_disable_dev;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
sizeof(struct txgbe_adapter),
TXGBE_MAX_TX_QUEUES,
TXGBE_MAX_RX_QUEUES);
if (!netdev) {
err = -ENOMEM;
goto err_pci_release_regions;
}
SET_NETDEV_DEV(netdev, &pdev->dev);
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),
pci_resource_len(pdev, 0));
if (!adapter->io_addr) {
err = -EIO;
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,
pci_select_bars(pdev, IORESOURCE_MEM));
err_pci_disable_dev:
pci_disable_device(pdev);
return err;
}
/**
* txgbe_remove - Device Removal Routine
* @pdev: PCI device information struct
*
* txgbe_remove is called by the PCI subsystem to alert the driver
* that it should release a PCI device. The could be caused by a
* Hot-Plug event, or because the driver is going to be removed from
* memory.
**/
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);
}
static struct pci_driver txgbe_driver = {
.name = txgbe_driver_name,
.id_table = txgbe_pci_tbl,
.probe = txgbe_probe,
.remove = txgbe_remove,
.shutdown = txgbe_shutdown,
};
module_pci_driver(txgbe_driver);
MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver");
MODULE_LICENSE("GPL");