Commit 07960048 authored by Justin Lai's avatar Justin Lai Committed by Jakub Kicinski
Browse files

rtase: Implement net_device_ops 



1. Implement .ndo_set_rx_mode so that the device can change address
list filtering.
2. Implement .ndo_set_mac_address so that mac address can be changed.
3. Implement .ndo_change_mtu so that mtu can be changed.
4. Implement .ndo_tx_timeout to perform related processing when the
transmitter does not make any progress.
5. Implement .ndo_get_stats64 to provide statistics that are called
when the user wants to get network device usage.
6. Implement .ndo_vlan_rx_add_vid to register VLAN ID when the device
supports VLAN filtering.
7. Implement .ndo_vlan_rx_kill_vid to unregister VLAN ID when the device
supports VLAN filtering.
8. Implement the .ndo_setup_tc to enable setting any "tc" scheduler,
classifier or action on dev.
9. Implement .ndo_fix_features enables adjusting requested feature flags
based on device-specific constraints.
10. Implement .ndo_set_features enables updating device configuration to
new features.

Signed-off-by: default avatarJustin Lai <justinlai0215@realtek.com>
Link: https://patch.msgid.link/20240904032114.247117-9-justinlai0215@realtek.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent cf7226c8

drivers/net/ethernet/realtek/rtase/rtase_main.c

+235 −0
Original line number Diff line number Diff line
@@ -1417,6 +1417,11 @@ static netdev_tx_t rtase_start_xmit(struct sk_buff *skb, 
	return NETDEV_TX_OK;

}



static void rtase_set_rx_mode(struct net_device *dev)

{

	rtase_hw_set_rx_packet_filter(dev);

}



static void rtase_enable_eem_write(const struct rtase_private *tp)

{

	u8 val;
@@ -1449,10 +1454,240 @@ static void rtase_rar_set(const struct rtase_private *tp, const u8 *addr) 
	rtase_w16(tp, RTASE_LBK_CTRL, RTASE_LBK_ATLD | RTASE_LBK_CLR);

}



static int rtase_set_mac_address(struct net_device *dev, void *p)

{

	struct rtase_private *tp = netdev_priv(dev);

	int ret;



	ret = eth_mac_addr(dev, p);

	if (ret)

		return ret;



	rtase_rar_set(tp, dev->dev_addr);



	return 0;

}



static int rtase_change_mtu(struct net_device *dev, int new_mtu)

{

	dev->mtu = new_mtu;



	netdev_update_features(dev);



	return 0;

}



static void rtase_wait_for_quiescence(const struct net_device *dev)

{

	struct rtase_private *tp = netdev_priv(dev);

	struct rtase_int_vector *ivec;

	u32 i;



	for (i = 0; i < tp->int_nums; i++) {

		ivec = &tp->int_vector[i];

		synchronize_irq(ivec->irq);

		/* wait for any pending NAPI task to complete */

		napi_disable(&ivec->napi);

	}



	rtase_irq_dis_and_clear(tp);



	for (i = 0; i < tp->int_nums; i++) {

		ivec = &tp->int_vector[i];

		napi_enable(&ivec->napi);

	}

}



static void rtase_sw_reset(struct net_device *dev)

{

	struct rtase_private *tp = netdev_priv(dev);

	int ret;



	netif_stop_queue(dev);

	netif_carrier_off(dev);

	rtase_hw_reset(dev);



	/* let's wait a bit while any (async) irq lands on */

	rtase_wait_for_quiescence(dev);

	rtase_tx_clear(tp);

	rtase_rx_clear(tp);



	ret = rtase_init_ring(dev);

	if (ret) {

		netdev_err(dev, "unable to init ring\n");

		rtase_free_desc(tp);

		return;

	}



	rtase_hw_config(dev);

	/* always link, so start to transmit & receive */

	rtase_hw_start(dev);



	netif_carrier_on(dev);

	netif_wake_queue(dev);

}



static void rtase_dump_tally_counter(const struct rtase_private *tp)

{

	dma_addr_t paddr = tp->tally_paddr;

	u32 cmd = lower_32_bits(paddr);

	u32 val;

	int err;



	rtase_w32(tp, RTASE_DTCCR4, upper_32_bits(paddr));

	rtase_w32(tp, RTASE_DTCCR0, cmd);

	rtase_w32(tp, RTASE_DTCCR0, cmd | RTASE_COUNTER_DUMP);



	err = read_poll_timeout(rtase_r32, val, !(val & RTASE_COUNTER_DUMP),

				10, 250, false, tp, RTASE_DTCCR0);



	if (err == -ETIMEDOUT)

		netdev_err(tp->dev, "error occurred in dump tally counter\n");

}



static void rtase_dump_state(const struct net_device *dev)

{

	const struct rtase_private *tp = netdev_priv(dev);

	int max_reg_size = RTASE_PCI_REGS_SIZE;

	const struct rtase_counters *counters;

	const struct rtase_ring *ring;

	u32 dword_rd;

	int n = 0;



	ring = &tp->tx_ring[0];

	netdev_err(dev, "Tx descriptor info:\n");

	netdev_err(dev, "Tx curIdx = 0x%x\n", ring->cur_idx);

	netdev_err(dev, "Tx dirtyIdx = 0x%x\n", ring->dirty_idx);

	netdev_err(dev, "Tx phyAddr = %pad\n", &ring->phy_addr);



	ring = &tp->rx_ring[0];

	netdev_err(dev, "Rx descriptor info:\n");

	netdev_err(dev, "Rx curIdx = 0x%x\n", ring->cur_idx);

	netdev_err(dev, "Rx dirtyIdx = 0x%x\n", ring->dirty_idx);

	netdev_err(dev, "Rx phyAddr = %pad\n", &ring->phy_addr);



	netdev_err(dev, "Device Registers:\n");

	netdev_err(dev, "Chip Command = 0x%02x\n",

		   rtase_r8(tp, RTASE_CHIP_CMD));

	netdev_err(dev, "IMR = %08x\n", rtase_r32(tp, RTASE_IMR0));

	netdev_err(dev, "ISR = %08x\n", rtase_r32(tp, RTASE_ISR0));

	netdev_err(dev, "Boot Ctrl Reg(0xE004) = %04x\n",

		   rtase_r16(tp, RTASE_BOOT_CTL));

	netdev_err(dev, "EPHY ISR(0xE014) = %04x\n",

		   rtase_r16(tp, RTASE_EPHY_ISR));

	netdev_err(dev, "EPHY IMR(0xE016) = %04x\n",

		   rtase_r16(tp, RTASE_EPHY_IMR));

	netdev_err(dev, "CLKSW SET REG(0xE018) = %04x\n",

		   rtase_r16(tp, RTASE_CLKSW_SET));



	netdev_err(dev, "Dump PCI Registers:\n");



	while (n < max_reg_size) {

		if ((n % RTASE_DWORD_MOD) == 0)

			netdev_err(tp->dev, "0x%03x:\n", n);



		pci_read_config_dword(tp->pdev, n, &dword_rd);

		netdev_err(tp->dev, "%08x\n", dword_rd);

		n += 4;

	}



	netdev_err(dev, "Dump tally counter:\n");

	counters = tp->tally_vaddr;

	rtase_dump_tally_counter(tp);



	netdev_err(dev, "tx_packets %lld\n",

		   le64_to_cpu(counters->tx_packets));

	netdev_err(dev, "rx_packets %lld\n",

		   le64_to_cpu(counters->rx_packets));

	netdev_err(dev, "tx_errors %lld\n",

		   le64_to_cpu(counters->tx_errors));

	netdev_err(dev, "rx_errors %d\n",

		   le32_to_cpu(counters->rx_errors));

	netdev_err(dev, "rx_missed %d\n",

		   le16_to_cpu(counters->rx_missed));

	netdev_err(dev, "align_errors %d\n",

		   le16_to_cpu(counters->align_errors));

	netdev_err(dev, "tx_one_collision %d\n",

		   le32_to_cpu(counters->tx_one_collision));

	netdev_err(dev, "tx_multi_collision %d\n",

		   le32_to_cpu(counters->tx_multi_collision));

	netdev_err(dev, "rx_unicast %lld\n",

		   le64_to_cpu(counters->rx_unicast));

	netdev_err(dev, "rx_broadcast %lld\n",

		   le64_to_cpu(counters->rx_broadcast));

	netdev_err(dev, "rx_multicast %d\n",

		   le32_to_cpu(counters->rx_multicast));

	netdev_err(dev, "tx_aborted %d\n",

		   le16_to_cpu(counters->tx_aborted));

	netdev_err(dev, "tx_underun %d\n",

		   le16_to_cpu(counters->tx_underun));

}



static void rtase_tx_timeout(struct net_device *dev, unsigned int txqueue)

{

	rtase_dump_state(dev);

	rtase_sw_reset(dev);

}



static void rtase_get_stats64(struct net_device *dev,

			      struct rtnl_link_stats64 *stats)

{

	const struct rtase_private *tp = netdev_priv(dev);

	const struct rtase_counters *counters;



	counters = tp->tally_vaddr;



	dev_fetch_sw_netstats(stats, dev->tstats);



	/* fetch additional counter values missing in stats collected by driver

	 * from tally counter

	 */

	rtase_dump_tally_counter(tp);

	stats->rx_errors = tp->stats.rx_errors;

	stats->tx_errors = le64_to_cpu(counters->tx_errors);

	stats->rx_dropped = tp->stats.rx_dropped;

	stats->tx_dropped = tp->stats.tx_dropped;

	stats->multicast = tp->stats.multicast;

	stats->rx_length_errors = tp->stats.rx_length_errors;

}



static netdev_features_t rtase_fix_features(struct net_device *dev,

					    netdev_features_t features)

{

	netdev_features_t features_fix = features;



	/* not support TSO for jumbo frames */

	if (dev->mtu > ETH_DATA_LEN)

		features_fix &= ~NETIF_F_ALL_TSO;



	return features_fix;

}



static int rtase_set_features(struct net_device *dev,

			      netdev_features_t features)

{

	netdev_features_t features_set = features;



	features_set &= NETIF_F_RXALL | NETIF_F_RXCSUM |

			NETIF_F_HW_VLAN_CTAG_RX;



	if (features_set ^ dev->features)

		rtase_hw_set_features(dev, features_set);



	return 0;

}



static const struct net_device_ops rtase_netdev_ops = {

	.ndo_open = rtase_open,

	.ndo_stop = rtase_close,

	.ndo_start_xmit = rtase_start_xmit,

	.ndo_set_rx_mode = rtase_set_rx_mode,

	.ndo_set_mac_address = rtase_set_mac_address,

	.ndo_change_mtu = rtase_change_mtu,

	.ndo_tx_timeout = rtase_tx_timeout,

	.ndo_get_stats64 = rtase_get_stats64,

	.ndo_fix_features = rtase_fix_features,

	.ndo_set_features = rtase_set_features,

};



static void rtase_get_mac_address(struct net_device *dev)