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Message-ID: <24dbdb3c-67df-4949-a278-0e41c25e7b20@gmail.com>
Date: Sun, 11 Jan 2026 18:58:01 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Andrew Lunn <andrew+netdev@...n.ch>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, David Miller <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Simon Horman <horms@...nel.org>,
Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
Lorenzo Bianconi <lorenzo@...nel.org>,
Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next] net: ethernet: dnet: remove driver
This legacy platform driver was used with some Qong board. Support for
this board was removed with e731f3146ff3 ("Merge tag 'armsoc-soc' of
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") in 2020.
This patch removed arch/arm/mach-imx/mach-qong.c.
So remove the now orphaned dnet driver.
Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
drivers/net/ethernet/Kconfig | 12 -
drivers/net/ethernet/Makefile | 1 -
drivers/net/ethernet/dnet.c | 877 ----------------------------------
drivers/net/ethernet/dnet.h | 220 ---------
4 files changed, 1110 deletions(-)
delete mode 100644 drivers/net/ethernet/dnet.c
delete mode 100644 drivers/net/ethernet/dnet.h
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 4a1b368ca7e..678beefe314 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -55,18 +55,6 @@ source "drivers/net/ethernet/cirrus/Kconfig"
source "drivers/net/ethernet/cisco/Kconfig"
source "drivers/net/ethernet/cortina/Kconfig"
source "drivers/net/ethernet/davicom/Kconfig"
-
-config DNET
- tristate "Dave ethernet support (DNET)"
- depends on HAS_IOMEM
- select PHYLIB
- help
- The Dave ethernet interface (DNET) is found on Qong Board FPGA.
- Say Y to include support for the DNET chip.
-
- To compile this driver as a module, choose M here: the module
- will be called dnet.
-
source "drivers/net/ethernet/dec/Kconfig"
source "drivers/net/ethernet/dlink/Kconfig"
source "drivers/net/ethernet/emulex/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 2e18df8ca8e..c9922628d8d 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -34,7 +34,6 @@ obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/
obj-$(CONFIG_NET_VENDOR_CORTINA) += cortina/
obj-$(CONFIG_CX_ECAT) += ec_bhf.o
obj-$(CONFIG_DM9000) += davicom/
-obj-$(CONFIG_DNET) += dnet.o
obj-$(CONFIG_NET_VENDOR_DEC) += dec/
obj-$(CONFIG_NET_VENDOR_DLINK) += dlink/
obj-$(CONFIG_NET_VENDOR_EMULEX) += emulex/
diff --git a/drivers/net/ethernet/dnet.c b/drivers/net/ethernet/dnet.c
deleted file mode 100644
index 0de3cd660ec..00000000000
--- a/drivers/net/ethernet/dnet.c
+++ /dev/null
@@ -1,877 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Dave DNET Ethernet Controller driver
- *
- * Copyright (C) 2008 Dave S.r.l. <www.dave.eu>
- * Copyright (C) 2009 Ilya Yanok, Emcraft Systems Ltd, <yanok@...raft.com>
- */
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/phy.h>
-
-#include "dnet.h"
-
-#undef DEBUG
-
-/* function for reading internal MAC register */
-static u16 dnet_readw_mac(struct dnet *bp, u16 reg)
-{
- u16 data_read;
-
- /* issue a read */
- dnet_writel(bp, reg, MACREG_ADDR);
-
- /* since a read/write op to the MAC is very slow,
- * we must wait before reading the data */
- ndelay(500);
-
- /* read data read from the MAC register */
- data_read = dnet_readl(bp, MACREG_DATA);
-
- /* all done */
- return data_read;
-}
-
-/* function for writing internal MAC register */
-static void dnet_writew_mac(struct dnet *bp, u16 reg, u16 val)
-{
- /* load data to write */
- dnet_writel(bp, val, MACREG_DATA);
-
- /* issue a write */
- dnet_writel(bp, reg | DNET_INTERNAL_WRITE, MACREG_ADDR);
-
- /* since a read/write op to the MAC is very slow,
- * we must wait before exiting */
- ndelay(500);
-}
-
-static void __dnet_set_hwaddr(struct dnet *bp)
-{
- u16 tmp;
-
- tmp = be16_to_cpup((const __be16 *)bp->dev->dev_addr);
- dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG, tmp);
- tmp = be16_to_cpup((const __be16 *)(bp->dev->dev_addr + 2));
- dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG, tmp);
- tmp = be16_to_cpup((const __be16 *)(bp->dev->dev_addr + 4));
- dnet_writew_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG, tmp);
-}
-
-static void dnet_get_hwaddr(struct dnet *bp)
-{
- u16 tmp;
- u8 addr[6];
-
- /*
- * from MAC docs:
- * "Note that the MAC address is stored in the registers in Hexadecimal
- * form. For example, to set the MAC Address to: AC-DE-48-00-00-80
- * would require writing 0xAC (octet 0) to address 0x0B (high byte of
- * Mac_addr[15:0]), 0xDE (octet 1) to address 0x0A (Low byte of
- * Mac_addr[15:0]), 0x48 (octet 2) to address 0x0D (high byte of
- * Mac_addr[15:0]), 0x00 (octet 3) to address 0x0C (Low byte of
- * Mac_addr[15:0]), 0x00 (octet 4) to address 0x0F (high byte of
- * Mac_addr[15:0]), and 0x80 (octet 5) to address * 0x0E (Low byte of
- * Mac_addr[15:0]).
- */
- tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_0_REG);
- *((__be16 *)addr) = cpu_to_be16(tmp);
- tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_1_REG);
- *((__be16 *)(addr + 2)) = cpu_to_be16(tmp);
- tmp = dnet_readw_mac(bp, DNET_INTERNAL_MAC_ADDR_2_REG);
- *((__be16 *)(addr + 4)) = cpu_to_be16(tmp);
-
- if (is_valid_ether_addr(addr))
- eth_hw_addr_set(bp->dev, addr);
-}
-
-static int dnet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)
-{
- struct dnet *bp = bus->priv;
- u16 value;
-
- while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
- & DNET_INTERNAL_GMII_MNG_CMD_FIN))
- cpu_relax();
-
- /* only 5 bits allowed for phy-addr and reg_offset */
- mii_id &= 0x1f;
- regnum &= 0x1f;
-
- /* prepare reg_value for a read */
- value = (mii_id << 8);
- value |= regnum;
-
- /* write control word */
- dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, value);
-
- /* wait for end of transfer */
- while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
- & DNET_INTERNAL_GMII_MNG_CMD_FIN))
- cpu_relax();
-
- value = dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG);
-
- pr_debug("mdio_read %02x:%02x <- %04x\n", mii_id, regnum, value);
-
- return value;
-}
-
-static int dnet_mdio_write(struct mii_bus *bus, int mii_id, int regnum,
- u16 value)
-{
- struct dnet *bp = bus->priv;
- u16 tmp;
-
- pr_debug("mdio_write %02x:%02x <- %04x\n", mii_id, regnum, value);
-
- while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
- & DNET_INTERNAL_GMII_MNG_CMD_FIN))
- cpu_relax();
-
- /* prepare for a write operation */
- tmp = (1 << 13);
-
- /* only 5 bits allowed for phy-addr and reg_offset */
- mii_id &= 0x1f;
- regnum &= 0x1f;
-
- /* only 16 bits on data */
- value &= 0xffff;
-
- /* prepare reg_value for a write */
- tmp |= (mii_id << 8);
- tmp |= regnum;
-
- /* write data to write first */
- dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_DAT_REG, value);
-
- /* write control word */
- dnet_writew_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG, tmp);
-
- while (!(dnet_readw_mac(bp, DNET_INTERNAL_GMII_MNG_CTL_REG)
- & DNET_INTERNAL_GMII_MNG_CMD_FIN))
- cpu_relax();
-
- return 0;
-}
-
-static void dnet_handle_link_change(struct net_device *dev)
-{
- struct dnet *bp = netdev_priv(dev);
- struct phy_device *phydev = dev->phydev;
- unsigned long flags;
- u32 mode_reg, ctl_reg;
-
- int status_change = 0;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- mode_reg = dnet_readw_mac(bp, DNET_INTERNAL_MODE_REG);
- ctl_reg = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG);
-
- if (phydev->link) {
- if (bp->duplex != phydev->duplex) {
- if (phydev->duplex)
- ctl_reg &=
- ~(DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP);
- else
- ctl_reg |=
- DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP;
-
- bp->duplex = phydev->duplex;
- status_change = 1;
- }
-
- if (bp->speed != phydev->speed) {
- status_change = 1;
- switch (phydev->speed) {
- case 1000:
- mode_reg |= DNET_INTERNAL_MODE_GBITEN;
- break;
- case 100:
- case 10:
- mode_reg &= ~DNET_INTERNAL_MODE_GBITEN;
- break;
- default:
- printk(KERN_WARNING
- "%s: Ack! Speed (%d) is not "
- "10/100/1000!\n", dev->name,
- phydev->speed);
- break;
- }
- bp->speed = phydev->speed;
- }
- }
-
- if (phydev->link != bp->link) {
- if (phydev->link) {
- mode_reg |=
- (DNET_INTERNAL_MODE_RXEN | DNET_INTERNAL_MODE_TXEN);
- } else {
- mode_reg &=
- ~(DNET_INTERNAL_MODE_RXEN |
- DNET_INTERNAL_MODE_TXEN);
- bp->speed = 0;
- bp->duplex = -1;
- }
- bp->link = phydev->link;
-
- status_change = 1;
- }
-
- if (status_change) {
- dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, ctl_reg);
- dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, mode_reg);
- }
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- if (status_change) {
- if (phydev->link)
- printk(KERN_INFO "%s: link up (%d/%s)\n",
- dev->name, phydev->speed,
- DUPLEX_FULL == phydev->duplex ? "Full" : "Half");
- else
- printk(KERN_INFO "%s: link down\n", dev->name);
- }
-}
-
-static int dnet_mii_probe(struct net_device *dev)
-{
- struct dnet *bp = netdev_priv(dev);
- struct phy_device *phydev = NULL;
-
- /* find the first phy */
- phydev = phy_find_first(bp->mii_bus);
-
- if (!phydev) {
- printk(KERN_ERR "%s: no PHY found\n", dev->name);
- return -ENODEV;
- }
-
- /* TODO : add pin_irq */
-
- /* attach the mac to the phy */
- if (bp->capabilities & DNET_HAS_RMII) {
- phydev = phy_connect(dev, phydev_name(phydev),
- &dnet_handle_link_change,
- PHY_INTERFACE_MODE_RMII);
- } else {
- phydev = phy_connect(dev, phydev_name(phydev),
- &dnet_handle_link_change,
- PHY_INTERFACE_MODE_MII);
- }
-
- if (IS_ERR(phydev)) {
- printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name);
- return PTR_ERR(phydev);
- }
-
- /* mask with MAC supported features */
- if (bp->capabilities & DNET_HAS_GIGABIT)
- phy_set_max_speed(phydev, SPEED_1000);
- else
- phy_set_max_speed(phydev, SPEED_100);
-
- phy_support_asym_pause(phydev);
-
- bp->link = 0;
- bp->speed = 0;
- bp->duplex = -1;
-
- return 0;
-}
-
-static int dnet_mii_init(struct dnet *bp)
-{
- int err;
-
- bp->mii_bus = mdiobus_alloc();
- if (bp->mii_bus == NULL)
- return -ENOMEM;
-
- bp->mii_bus->name = "dnet_mii_bus";
- bp->mii_bus->read = &dnet_mdio_read;
- bp->mii_bus->write = &dnet_mdio_write;
-
- snprintf(bp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
- bp->pdev->name, bp->pdev->id);
-
- bp->mii_bus->priv = bp;
-
- if (mdiobus_register(bp->mii_bus)) {
- err = -ENXIO;
- goto err_out;
- }
-
- if (dnet_mii_probe(bp->dev) != 0) {
- err = -ENXIO;
- goto err_out_unregister_bus;
- }
-
- return 0;
-
-err_out_unregister_bus:
- mdiobus_unregister(bp->mii_bus);
-err_out:
- mdiobus_free(bp->mii_bus);
- return err;
-}
-
-/* For Neptune board: LINK1000 as Link LED and TX as activity LED */
-static int dnet_phy_marvell_fixup(struct phy_device *phydev)
-{
- return phy_write(phydev, 0x18, 0x4148);
-}
-
-static void dnet_update_stats(struct dnet *bp)
-{
- u32 __iomem *reg = bp->regs + DNET_RX_PKT_IGNR_CNT;
- u32 *p = &bp->hw_stats.rx_pkt_ignr;
- u32 *end = &bp->hw_stats.rx_byte + 1;
-
- WARN_ON((unsigned long)(end - p - 1) !=
- (DNET_RX_BYTE_CNT - DNET_RX_PKT_IGNR_CNT) / 4);
-
- for (; p < end; p++, reg++)
- *p += readl(reg);
-
- reg = bp->regs + DNET_TX_UNICAST_CNT;
- p = &bp->hw_stats.tx_unicast;
- end = &bp->hw_stats.tx_byte + 1;
-
- WARN_ON((unsigned long)(end - p - 1) !=
- (DNET_TX_BYTE_CNT - DNET_TX_UNICAST_CNT) / 4);
-
- for (; p < end; p++, reg++)
- *p += readl(reg);
-}
-
-static int dnet_poll(struct napi_struct *napi, int budget)
-{
- struct dnet *bp = container_of(napi, struct dnet, napi);
- struct net_device *dev = bp->dev;
- int npackets = 0;
- unsigned int pkt_len;
- struct sk_buff *skb;
- unsigned int *data_ptr;
- u32 int_enable;
- u32 cmd_word;
- int i;
-
- while (npackets < budget) {
- /*
- * break out of while loop if there are no more
- * packets waiting
- */
- if (!(dnet_readl(bp, RX_FIFO_WCNT) >> 16))
- break;
-
- cmd_word = dnet_readl(bp, RX_LEN_FIFO);
- pkt_len = cmd_word & 0xFFFF;
-
- if (cmd_word & 0xDF180000)
- printk(KERN_ERR "%s packet receive error %x\n",
- __func__, cmd_word);
-
- skb = netdev_alloc_skb(dev, pkt_len + 5);
- if (skb != NULL) {
- /* Align IP on 16 byte boundaries */
- skb_reserve(skb, 2);
- /*
- * 'skb_put()' points to the start of sk_buff
- * data area.
- */
- data_ptr = skb_put(skb, pkt_len);
- for (i = 0; i < (pkt_len + 3) >> 2; i++)
- *data_ptr++ = dnet_readl(bp, RX_DATA_FIFO);
- skb->protocol = eth_type_trans(skb, dev);
- netif_receive_skb(skb);
- npackets++;
- } else
- printk(KERN_NOTICE
- "%s: No memory to allocate a sk_buff of "
- "size %u.\n", dev->name, pkt_len);
- }
-
- if (npackets < budget) {
- /* We processed all packets available. Tell NAPI it can
- * stop polling then re-enable rx interrupts.
- */
- napi_complete_done(napi, npackets);
- int_enable = dnet_readl(bp, INTR_ENB);
- int_enable |= DNET_INTR_SRC_RX_CMDFIFOAF;
- dnet_writel(bp, int_enable, INTR_ENB);
- }
-
- return npackets;
-}
-
-static irqreturn_t dnet_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- struct dnet *bp = netdev_priv(dev);
- u32 int_src, int_enable, int_current;
- unsigned long flags;
- unsigned int handled = 0;
-
- spin_lock_irqsave(&bp->lock, flags);
-
- /* read and clear the DNET irq (clear on read) */
- int_src = dnet_readl(bp, INTR_SRC);
- int_enable = dnet_readl(bp, INTR_ENB);
- int_current = int_src & int_enable;
-
- /* restart the queue if we had stopped it for TX fifo almost full */
- if (int_current & DNET_INTR_SRC_TX_FIFOAE) {
- int_enable = dnet_readl(bp, INTR_ENB);
- int_enable &= ~DNET_INTR_ENB_TX_FIFOAE;
- dnet_writel(bp, int_enable, INTR_ENB);
- netif_wake_queue(dev);
- handled = 1;
- }
-
- /* RX FIFO error checking */
- if (int_current &
- (DNET_INTR_SRC_RX_CMDFIFOFF | DNET_INTR_SRC_RX_DATAFIFOFF)) {
- printk(KERN_ERR "%s: RX fifo error %x, irq %x\n", __func__,
- dnet_readl(bp, RX_STATUS), int_current);
- /* we can only flush the RX FIFOs */
- dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH, SYS_CTL);
- ndelay(500);
- dnet_writel(bp, 0, SYS_CTL);
- handled = 1;
- }
-
- /* TX FIFO error checking */
- if (int_current &
- (DNET_INTR_SRC_TX_FIFOFULL | DNET_INTR_SRC_TX_DISCFRM)) {
- printk(KERN_ERR "%s: TX fifo error %x, irq %x\n", __func__,
- dnet_readl(bp, TX_STATUS), int_current);
- /* we can only flush the TX FIFOs */
- dnet_writel(bp, DNET_SYS_CTL_TXFIFOFLUSH, SYS_CTL);
- ndelay(500);
- dnet_writel(bp, 0, SYS_CTL);
- handled = 1;
- }
-
- if (int_current & DNET_INTR_SRC_RX_CMDFIFOAF) {
- if (napi_schedule_prep(&bp->napi)) {
- /*
- * There's no point taking any more interrupts
- * until we have processed the buffers
- */
- /* Disable Rx interrupts and schedule NAPI poll */
- int_enable = dnet_readl(bp, INTR_ENB);
- int_enable &= ~DNET_INTR_SRC_RX_CMDFIFOAF;
- dnet_writel(bp, int_enable, INTR_ENB);
- __napi_schedule(&bp->napi);
- }
- handled = 1;
- }
-
- if (!handled)
- pr_debug("%s: irq %x remains\n", __func__, int_current);
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- return IRQ_RETVAL(handled);
-}
-
-#ifdef DEBUG
-static inline void dnet_print_skb(struct sk_buff *skb)
-{
- int k;
- printk(KERN_DEBUG PFX "data:");
- for (k = 0; k < skb->len; k++)
- printk(" %02x", (unsigned int)skb->data[k]);
- printk("\n");
-}
-#else
-#define dnet_print_skb(skb) do {} while (0)
-#endif
-
-static netdev_tx_t dnet_start_xmit(struct sk_buff *skb, struct net_device *dev)
-{
-
- struct dnet *bp = netdev_priv(dev);
- unsigned int i, tx_cmd, wrsz;
- unsigned long flags;
- unsigned int *bufp;
- u32 irq_enable;
-
- dnet_readl(bp, TX_STATUS);
-
- pr_debug("start_xmit: len %u head %p data %p\n",
- skb->len, skb->head, skb->data);
- dnet_print_skb(skb);
-
- spin_lock_irqsave(&bp->lock, flags);
-
- dnet_readl(bp, TX_STATUS);
-
- bufp = (unsigned int *)(((unsigned long) skb->data) & ~0x3UL);
- wrsz = (u32) skb->len + 3;
- wrsz += ((unsigned long) skb->data) & 0x3;
- wrsz >>= 2;
- tx_cmd = ((((unsigned long)(skb->data)) & 0x03) << 16) | (u32) skb->len;
-
- /* check if there is enough room for the current frame */
- if (wrsz < (DNET_FIFO_SIZE - dnet_readl(bp, TX_FIFO_WCNT))) {
- for (i = 0; i < wrsz; i++)
- dnet_writel(bp, *bufp++, TX_DATA_FIFO);
-
- /*
- * inform MAC that a packet's written and ready to be
- * shipped out
- */
- dnet_writel(bp, tx_cmd, TX_LEN_FIFO);
- }
-
- if (dnet_readl(bp, TX_FIFO_WCNT) > DNET_FIFO_TX_DATA_AF_TH) {
- netif_stop_queue(dev);
- dnet_readl(bp, INTR_SRC);
- irq_enable = dnet_readl(bp, INTR_ENB);
- irq_enable |= DNET_INTR_ENB_TX_FIFOAE;
- dnet_writel(bp, irq_enable, INTR_ENB);
- }
-
- skb_tx_timestamp(skb);
-
- spin_unlock_irqrestore(&bp->lock, flags);
-
- /* free the buffer */
- dev_kfree_skb(skb);
-
- return NETDEV_TX_OK;
-}
-
-static void dnet_reset_hw(struct dnet *bp)
-{
- /* put ts_mac in IDLE state i.e. disable rx/tx */
- dnet_writew_mac(bp, DNET_INTERNAL_MODE_REG, DNET_INTERNAL_MODE_FCEN);
-
- /*
- * RX FIFO almost full threshold: only cmd FIFO almost full is
- * implemented for RX side
- */
- dnet_writel(bp, DNET_FIFO_RX_CMD_AF_TH, RX_FIFO_TH);
- /*
- * TX FIFO almost empty threshold: only data FIFO almost empty
- * is implemented for TX side
- */
- dnet_writel(bp, DNET_FIFO_TX_DATA_AE_TH, TX_FIFO_TH);
-
- /* flush rx/tx fifos */
- dnet_writel(bp, DNET_SYS_CTL_RXFIFOFLUSH | DNET_SYS_CTL_TXFIFOFLUSH,
- SYS_CTL);
- msleep(1);
- dnet_writel(bp, 0, SYS_CTL);
-}
-
-static void dnet_init_hw(struct dnet *bp)
-{
- u32 config;
-
- dnet_reset_hw(bp);
- __dnet_set_hwaddr(bp);
-
- config = dnet_readw_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG);
-
- if (bp->dev->flags & IFF_PROMISC)
- /* Copy All Frames */
- config |= DNET_INTERNAL_RXTX_CONTROL_ENPROMISC;
- if (!(bp->dev->flags & IFF_BROADCAST))
- /* No BroadCast */
- config |= DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST;
-
- config |= DNET_INTERNAL_RXTX_CONTROL_RXPAUSE |
- DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST |
- DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL |
- DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS;
-
- dnet_writew_mac(bp, DNET_INTERNAL_RXTX_CONTROL_REG, config);
-
- /* clear irq before enabling them */
- config = dnet_readl(bp, INTR_SRC);
-
- /* enable RX/TX interrupt, recv packet ready interrupt */
- dnet_writel(bp, DNET_INTR_ENB_GLOBAL_ENABLE | DNET_INTR_ENB_RX_SUMMARY |
- DNET_INTR_ENB_TX_SUMMARY | DNET_INTR_ENB_RX_FIFOERR |
- DNET_INTR_ENB_RX_ERROR | DNET_INTR_ENB_RX_FIFOFULL |
- DNET_INTR_ENB_TX_FIFOFULL | DNET_INTR_ENB_TX_DISCFRM |
- DNET_INTR_ENB_RX_PKTRDY, INTR_ENB);
-}
-
-static int dnet_open(struct net_device *dev)
-{
- struct dnet *bp = netdev_priv(dev);
-
- /* if the phy is not yet register, retry later */
- if (!dev->phydev)
- return -EAGAIN;
-
- napi_enable(&bp->napi);
- dnet_init_hw(bp);
-
- phy_start_aneg(dev->phydev);
-
- /* schedule a link state check */
- phy_start(dev->phydev);
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-static int dnet_close(struct net_device *dev)
-{
- struct dnet *bp = netdev_priv(dev);
-
- netif_stop_queue(dev);
- napi_disable(&bp->napi);
-
- if (dev->phydev)
- phy_stop(dev->phydev);
-
- dnet_reset_hw(bp);
- netif_carrier_off(dev);
-
- return 0;
-}
-
-static inline void dnet_print_pretty_hwstats(struct dnet_stats *hwstat)
-{
- pr_debug("%s\n", __func__);
- pr_debug("----------------------------- RX statistics "
- "-------------------------------\n");
- pr_debug("RX_PKT_IGNR_CNT %-8x\n", hwstat->rx_pkt_ignr);
- pr_debug("RX_LEN_CHK_ERR_CNT %-8x\n", hwstat->rx_len_chk_err);
- pr_debug("RX_LNG_FRM_CNT %-8x\n", hwstat->rx_lng_frm);
- pr_debug("RX_SHRT_FRM_CNT %-8x\n", hwstat->rx_shrt_frm);
- pr_debug("RX_IPG_VIOL_CNT %-8x\n", hwstat->rx_ipg_viol);
- pr_debug("RX_CRC_ERR_CNT %-8x\n", hwstat->rx_crc_err);
- pr_debug("RX_OK_PKT_CNT %-8x\n", hwstat->rx_ok_pkt);
- pr_debug("RX_CTL_FRM_CNT %-8x\n", hwstat->rx_ctl_frm);
- pr_debug("RX_PAUSE_FRM_CNT %-8x\n", hwstat->rx_pause_frm);
- pr_debug("RX_MULTICAST_CNT %-8x\n", hwstat->rx_multicast);
- pr_debug("RX_BROADCAST_CNT %-8x\n", hwstat->rx_broadcast);
- pr_debug("RX_VLAN_TAG_CNT %-8x\n", hwstat->rx_vlan_tag);
- pr_debug("RX_PRE_SHRINK_CNT %-8x\n", hwstat->rx_pre_shrink);
- pr_debug("RX_DRIB_NIB_CNT %-8x\n", hwstat->rx_drib_nib);
- pr_debug("RX_UNSUP_OPCD_CNT %-8x\n", hwstat->rx_unsup_opcd);
- pr_debug("RX_BYTE_CNT %-8x\n", hwstat->rx_byte);
- pr_debug("----------------------------- TX statistics "
- "-------------------------------\n");
- pr_debug("TX_UNICAST_CNT %-8x\n", hwstat->tx_unicast);
- pr_debug("TX_PAUSE_FRM_CNT %-8x\n", hwstat->tx_pause_frm);
- pr_debug("TX_MULTICAST_CNT %-8x\n", hwstat->tx_multicast);
- pr_debug("TX_BRDCAST_CNT %-8x\n", hwstat->tx_brdcast);
- pr_debug("TX_VLAN_TAG_CNT %-8x\n", hwstat->tx_vlan_tag);
- pr_debug("TX_BAD_FCS_CNT %-8x\n", hwstat->tx_bad_fcs);
- pr_debug("TX_JUMBO_CNT %-8x\n", hwstat->tx_jumbo);
- pr_debug("TX_BYTE_CNT %-8x\n", hwstat->tx_byte);
-}
-
-static struct net_device_stats *dnet_get_stats(struct net_device *dev)
-{
-
- struct dnet *bp = netdev_priv(dev);
- struct net_device_stats *nstat = &dev->stats;
- struct dnet_stats *hwstat = &bp->hw_stats;
-
- /* read stats from hardware */
- dnet_update_stats(bp);
-
- /* Convert HW stats into netdevice stats */
- nstat->rx_errors = (hwstat->rx_len_chk_err +
- hwstat->rx_lng_frm + hwstat->rx_shrt_frm +
- /* ignore IGP violation error
- hwstat->rx_ipg_viol + */
- hwstat->rx_crc_err +
- hwstat->rx_pre_shrink +
- hwstat->rx_drib_nib + hwstat->rx_unsup_opcd);
- nstat->tx_errors = hwstat->tx_bad_fcs;
- nstat->rx_length_errors = (hwstat->rx_len_chk_err +
- hwstat->rx_lng_frm +
- hwstat->rx_shrt_frm + hwstat->rx_pre_shrink);
- nstat->rx_crc_errors = hwstat->rx_crc_err;
- nstat->rx_frame_errors = hwstat->rx_pre_shrink + hwstat->rx_drib_nib;
- nstat->rx_packets = hwstat->rx_ok_pkt;
- nstat->tx_packets = (hwstat->tx_unicast +
- hwstat->tx_multicast + hwstat->tx_brdcast);
- nstat->rx_bytes = hwstat->rx_byte;
- nstat->tx_bytes = hwstat->tx_byte;
- nstat->multicast = hwstat->rx_multicast;
- nstat->rx_missed_errors = hwstat->rx_pkt_ignr;
-
- dnet_print_pretty_hwstats(hwstat);
-
- return nstat;
-}
-
-static void dnet_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strscpy(info->driver, DRV_NAME, sizeof(info->driver));
- strscpy(info->bus_info, "0", sizeof(info->bus_info));
-}
-
-static const struct ethtool_ops dnet_ethtool_ops = {
- .get_drvinfo = dnet_get_drvinfo,
- .get_link = ethtool_op_get_link,
- .get_ts_info = ethtool_op_get_ts_info,
- .get_link_ksettings = phy_ethtool_get_link_ksettings,
- .set_link_ksettings = phy_ethtool_set_link_ksettings,
-};
-
-static const struct net_device_ops dnet_netdev_ops = {
- .ndo_open = dnet_open,
- .ndo_stop = dnet_close,
- .ndo_get_stats = dnet_get_stats,
- .ndo_start_xmit = dnet_start_xmit,
- .ndo_eth_ioctl = phy_do_ioctl_running,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static int dnet_probe(struct platform_device *pdev)
-{
- struct resource *res;
- struct net_device *dev;
- struct dnet *bp;
- struct phy_device *phydev;
- int err;
- unsigned int irq;
-
- irq = platform_get_irq(pdev, 0);
-
- dev = alloc_etherdev(sizeof(*bp));
- if (!dev)
- return -ENOMEM;
-
- /* TODO: Actually, we have some interesting features... */
- dev->features |= 0;
-
- bp = netdev_priv(dev);
- bp->dev = dev;
-
- platform_set_drvdata(pdev, dev);
- SET_NETDEV_DEV(dev, &pdev->dev);
-
- spin_lock_init(&bp->lock);
-
- bp->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
- if (IS_ERR(bp->regs)) {
- err = PTR_ERR(bp->regs);
- goto err_out_free_dev;
- }
-
- dev->irq = irq;
- err = request_irq(dev->irq, dnet_interrupt, 0, DRV_NAME, dev);
- if (err) {
- dev_err(&pdev->dev, "Unable to request IRQ %d (error %d)\n",
- irq, err);
- goto err_out_free_dev;
- }
-
- dev->netdev_ops = &dnet_netdev_ops;
- netif_napi_add(dev, &bp->napi, dnet_poll);
- dev->ethtool_ops = &dnet_ethtool_ops;
-
- dev->base_addr = (unsigned long)bp->regs;
-
- bp->capabilities = dnet_readl(bp, VERCAPS) & DNET_CAPS_MASK;
-
- dnet_get_hwaddr(bp);
-
- if (!is_valid_ether_addr(dev->dev_addr)) {
- /* choose a random ethernet address */
- eth_hw_addr_random(dev);
- __dnet_set_hwaddr(bp);
- }
-
- err = register_netdev(dev);
- if (err) {
- dev_err(&pdev->dev, "Cannot register net device, aborting.\n");
- goto err_out_free_irq;
- }
-
- /* register the PHY board fixup (for Marvell 88E1111) */
- err = phy_register_fixup_for_uid(0x01410cc0, 0xfffffff0,
- dnet_phy_marvell_fixup);
- /* we can live without it, so just issue a warning */
- if (err)
- dev_warn(&pdev->dev, "Cannot register PHY board fixup.\n");
-
- err = dnet_mii_init(bp);
- if (err)
- goto err_out_unregister_netdev;
-
- dev_info(&pdev->dev, "Dave DNET at 0x%p (0x%08x) irq %d %pM\n",
- bp->regs, (unsigned int)res->start, dev->irq, dev->dev_addr);
- dev_info(&pdev->dev, "has %smdio, %sirq, %sgigabit, %sdma\n",
- (bp->capabilities & DNET_HAS_MDIO) ? "" : "no ",
- (bp->capabilities & DNET_HAS_IRQ) ? "" : "no ",
- (bp->capabilities & DNET_HAS_GIGABIT) ? "" : "no ",
- (bp->capabilities & DNET_HAS_DMA) ? "" : "no ");
- phydev = dev->phydev;
- phy_attached_info(phydev);
-
- return 0;
-
-err_out_unregister_netdev:
- unregister_netdev(dev);
-err_out_free_irq:
- free_irq(dev->irq, dev);
-err_out_free_dev:
- free_netdev(dev);
- return err;
-}
-
-static void dnet_remove(struct platform_device *pdev)
-{
-
- struct net_device *dev;
- struct dnet *bp;
-
- dev = platform_get_drvdata(pdev);
-
- if (dev) {
- bp = netdev_priv(dev);
- if (dev->phydev)
- phy_disconnect(dev->phydev);
- mdiobus_unregister(bp->mii_bus);
- mdiobus_free(bp->mii_bus);
- unregister_netdev(dev);
- free_irq(dev->irq, dev);
- free_netdev(dev);
- }
-}
-
-static struct platform_driver dnet_driver = {
- .probe = dnet_probe,
- .remove = dnet_remove,
- .driver = {
- .name = "dnet",
- },
-};
-
-module_platform_driver(dnet_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Dave DNET Ethernet driver");
-MODULE_AUTHOR("Ilya Yanok <yanok@...raft.com>, "
- "Matteo Vit <matteo.vit@...e.eu>");
diff --git a/drivers/net/ethernet/dnet.h b/drivers/net/ethernet/dnet.h
deleted file mode 100644
index 030724484b4..00000000000
--- a/drivers/net/ethernet/dnet.h
+++ /dev/null
@@ -1,220 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Dave DNET Ethernet Controller driver
- *
- * Copyright (C) 2008 Dave S.r.l. <www.dave.eu>
- */
-#ifndef _DNET_H
-#define _DNET_H
-
-#define DRV_NAME "dnet"
-#define PFX DRV_NAME ": "
-
-/* Register access macros */
-#define dnet_writel(port, value, reg) \
- writel((value), (port)->regs + DNET_##reg)
-#define dnet_readl(port, reg) readl((port)->regs + DNET_##reg)
-
-/* ALL DNET FIFO REGISTERS */
-#define DNET_RX_LEN_FIFO 0x000 /* RX_LEN_FIFO */
-#define DNET_RX_DATA_FIFO 0x004 /* RX_DATA_FIFO */
-#define DNET_TX_LEN_FIFO 0x008 /* TX_LEN_FIFO */
-#define DNET_TX_DATA_FIFO 0x00C /* TX_DATA_FIFO */
-
-/* ALL DNET CONTROL/STATUS REGISTERS OFFSETS */
-#define DNET_VERCAPS 0x100 /* VERCAPS */
-#define DNET_INTR_SRC 0x104 /* INTR_SRC */
-#define DNET_INTR_ENB 0x108 /* INTR_ENB */
-#define DNET_RX_STATUS 0x10C /* RX_STATUS */
-#define DNET_TX_STATUS 0x110 /* TX_STATUS */
-#define DNET_RX_FRAMES_CNT 0x114 /* RX_FRAMES_CNT */
-#define DNET_TX_FRAMES_CNT 0x118 /* TX_FRAMES_CNT */
-#define DNET_RX_FIFO_TH 0x11C /* RX_FIFO_TH */
-#define DNET_TX_FIFO_TH 0x120 /* TX_FIFO_TH */
-#define DNET_SYS_CTL 0x124 /* SYS_CTL */
-#define DNET_PAUSE_TMR 0x128 /* PAUSE_TMR */
-#define DNET_RX_FIFO_WCNT 0x12C /* RX_FIFO_WCNT */
-#define DNET_TX_FIFO_WCNT 0x130 /* TX_FIFO_WCNT */
-
-/* ALL DNET MAC REGISTERS */
-#define DNET_MACREG_DATA 0x200 /* Mac-Reg Data */
-#define DNET_MACREG_ADDR 0x204 /* Mac-Reg Addr */
-
-/* ALL DNET RX STATISTICS COUNTERS */
-#define DNET_RX_PKT_IGNR_CNT 0x300
-#define DNET_RX_LEN_CHK_ERR_CNT 0x304
-#define DNET_RX_LNG_FRM_CNT 0x308
-#define DNET_RX_SHRT_FRM_CNT 0x30C
-#define DNET_RX_IPG_VIOL_CNT 0x310
-#define DNET_RX_CRC_ERR_CNT 0x314
-#define DNET_RX_OK_PKT_CNT 0x318
-#define DNET_RX_CTL_FRM_CNT 0x31C
-#define DNET_RX_PAUSE_FRM_CNT 0x320
-#define DNET_RX_MULTICAST_CNT 0x324
-#define DNET_RX_BROADCAST_CNT 0x328
-#define DNET_RX_VLAN_TAG_CNT 0x32C
-#define DNET_RX_PRE_SHRINK_CNT 0x330
-#define DNET_RX_DRIB_NIB_CNT 0x334
-#define DNET_RX_UNSUP_OPCD_CNT 0x338
-#define DNET_RX_BYTE_CNT 0x33C
-
-/* DNET TX STATISTICS COUNTERS */
-#define DNET_TX_UNICAST_CNT 0x400
-#define DNET_TX_PAUSE_FRM_CNT 0x404
-#define DNET_TX_MULTICAST_CNT 0x408
-#define DNET_TX_BRDCAST_CNT 0x40C
-#define DNET_TX_VLAN_TAG_CNT 0x410
-#define DNET_TX_BAD_FCS_CNT 0x414
-#define DNET_TX_JUMBO_CNT 0x418
-#define DNET_TX_BYTE_CNT 0x41C
-
-/* SOME INTERNAL MAC-CORE REGISTER */
-#define DNET_INTERNAL_MODE_REG 0x0
-#define DNET_INTERNAL_RXTX_CONTROL_REG 0x2
-#define DNET_INTERNAL_MAX_PKT_SIZE_REG 0x4
-#define DNET_INTERNAL_IGP_REG 0x8
-#define DNET_INTERNAL_MAC_ADDR_0_REG 0xa
-#define DNET_INTERNAL_MAC_ADDR_1_REG 0xc
-#define DNET_INTERNAL_MAC_ADDR_2_REG 0xe
-#define DNET_INTERNAL_TX_RX_STS_REG 0x12
-#define DNET_INTERNAL_GMII_MNG_CTL_REG 0x14
-#define DNET_INTERNAL_GMII_MNG_DAT_REG 0x16
-
-#define DNET_INTERNAL_GMII_MNG_CMD_FIN (1 << 14)
-
-#define DNET_INTERNAL_WRITE (1 << 31)
-
-/* MAC-CORE REGISTER FIELDS */
-
-/* MAC-CORE MODE REGISTER FIELDS */
-#define DNET_INTERNAL_MODE_GBITEN (1 << 0)
-#define DNET_INTERNAL_MODE_FCEN (1 << 1)
-#define DNET_INTERNAL_MODE_RXEN (1 << 2)
-#define DNET_INTERNAL_MODE_TXEN (1 << 3)
-
-/* MAC-CORE RXTX CONTROL REGISTER FIELDS */
-#define DNET_INTERNAL_RXTX_CONTROL_RXSHORTFRAME (1 << 8)
-#define DNET_INTERNAL_RXTX_CONTROL_RXBROADCAST (1 << 7)
-#define DNET_INTERNAL_RXTX_CONTROL_RXMULTICAST (1 << 4)
-#define DNET_INTERNAL_RXTX_CONTROL_RXPAUSE (1 << 3)
-#define DNET_INTERNAL_RXTX_CONTROL_DISTXFCS (1 << 2)
-#define DNET_INTERNAL_RXTX_CONTROL_DISCFXFCS (1 << 1)
-#define DNET_INTERNAL_RXTX_CONTROL_ENPROMISC (1 << 0)
-#define DNET_INTERNAL_RXTX_CONTROL_DROPCONTROL (1 << 6)
-#define DNET_INTERNAL_RXTX_CONTROL_ENABLEHALFDUP (1 << 5)
-
-/* SYSTEM CONTROL REGISTER FIELDS */
-#define DNET_SYS_CTL_IGNORENEXTPKT (1 << 0)
-#define DNET_SYS_CTL_SENDPAUSE (1 << 2)
-#define DNET_SYS_CTL_RXFIFOFLUSH (1 << 3)
-#define DNET_SYS_CTL_TXFIFOFLUSH (1 << 4)
-
-/* TX STATUS REGISTER FIELDS */
-#define DNET_TX_STATUS_FIFO_ALMOST_EMPTY (1 << 2)
-#define DNET_TX_STATUS_FIFO_ALMOST_FULL (1 << 1)
-
-/* INTERRUPT SOURCE REGISTER FIELDS */
-#define DNET_INTR_SRC_TX_PKTSENT (1 << 0)
-#define DNET_INTR_SRC_TX_FIFOAF (1 << 1)
-#define DNET_INTR_SRC_TX_FIFOAE (1 << 2)
-#define DNET_INTR_SRC_TX_DISCFRM (1 << 3)
-#define DNET_INTR_SRC_TX_FIFOFULL (1 << 4)
-#define DNET_INTR_SRC_RX_CMDFIFOAF (1 << 8)
-#define DNET_INTR_SRC_RX_CMDFIFOFF (1 << 9)
-#define DNET_INTR_SRC_RX_DATAFIFOFF (1 << 10)
-#define DNET_INTR_SRC_TX_SUMMARY (1 << 16)
-#define DNET_INTR_SRC_RX_SUMMARY (1 << 17)
-#define DNET_INTR_SRC_PHY (1 << 19)
-
-/* INTERRUPT ENABLE REGISTER FIELDS */
-#define DNET_INTR_ENB_TX_PKTSENT (1 << 0)
-#define DNET_INTR_ENB_TX_FIFOAF (1 << 1)
-#define DNET_INTR_ENB_TX_FIFOAE (1 << 2)
-#define DNET_INTR_ENB_TX_DISCFRM (1 << 3)
-#define DNET_INTR_ENB_TX_FIFOFULL (1 << 4)
-#define DNET_INTR_ENB_RX_PKTRDY (1 << 8)
-#define DNET_INTR_ENB_RX_FIFOAF (1 << 9)
-#define DNET_INTR_ENB_RX_FIFOERR (1 << 10)
-#define DNET_INTR_ENB_RX_ERROR (1 << 11)
-#define DNET_INTR_ENB_RX_FIFOFULL (1 << 12)
-#define DNET_INTR_ENB_RX_FIFOAE (1 << 13)
-#define DNET_INTR_ENB_TX_SUMMARY (1 << 16)
-#define DNET_INTR_ENB_RX_SUMMARY (1 << 17)
-#define DNET_INTR_ENB_GLOBAL_ENABLE (1 << 18)
-
-/* default values:
- * almost empty = less than one full sized ethernet frame (no jumbo) inside
- * the fifo almost full = can write less than one full sized ethernet frame
- * (no jumbo) inside the fifo
- */
-#define DNET_CFG_TX_FIFO_FULL_THRES 25
-#define DNET_CFG_RX_FIFO_FULL_THRES 20
-
-/*
- * Capabilities. Used by the driver to know the capabilities that the ethernet
- * controller inside the FPGA have.
- */
-
-#define DNET_HAS_MDIO (1 << 0)
-#define DNET_HAS_IRQ (1 << 1)
-#define DNET_HAS_GIGABIT (1 << 2)
-#define DNET_HAS_DMA (1 << 3)
-
-#define DNET_HAS_MII (1 << 4) /* or GMII */
-#define DNET_HAS_RMII (1 << 5) /* or RGMII */
-
-#define DNET_CAPS_MASK 0xFFFF
-
-#define DNET_FIFO_SIZE 1024 /* 1K x 32 bit */
-#define DNET_FIFO_TX_DATA_AF_TH (DNET_FIFO_SIZE - 384) /* 384 = 1536 / 4 */
-#define DNET_FIFO_TX_DATA_AE_TH 384
-
-#define DNET_FIFO_RX_CMD_AF_TH (1 << 16) /* just one frame inside the FIFO */
-
-/*
- * Hardware-collected statistics.
- */
-struct dnet_stats {
- u32 rx_pkt_ignr;
- u32 rx_len_chk_err;
- u32 rx_lng_frm;
- u32 rx_shrt_frm;
- u32 rx_ipg_viol;
- u32 rx_crc_err;
- u32 rx_ok_pkt;
- u32 rx_ctl_frm;
- u32 rx_pause_frm;
- u32 rx_multicast;
- u32 rx_broadcast;
- u32 rx_vlan_tag;
- u32 rx_pre_shrink;
- u32 rx_drib_nib;
- u32 rx_unsup_opcd;
- u32 rx_byte;
- u32 tx_unicast;
- u32 tx_pause_frm;
- u32 tx_multicast;
- u32 tx_brdcast;
- u32 tx_vlan_tag;
- u32 tx_bad_fcs;
- u32 tx_jumbo;
- u32 tx_byte;
-};
-
-struct dnet {
- void __iomem *regs;
- spinlock_t lock;
- struct platform_device *pdev;
- struct net_device *dev;
- struct dnet_stats hw_stats;
- unsigned int capabilities; /* read from FPGA */
- struct napi_struct napi;
-
- /* PHY stuff */
- struct mii_bus *mii_bus;
- unsigned int link;
- unsigned int speed;
- unsigned int duplex;
-};
-
-#endif /* _DNET_H */
--
2.52.0
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