+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * drivers/net/ethernet/netx-eth.c
- *
- * Copyright (c) 2005 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-
-#include <linux/netdevice.h>
-#include <linux/platform_device.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/mii.h>
-
-#include <asm/io.h>
-#include <mach/hardware.h>
-#include <mach/netx-regs.h>
-#include <mach/pfifo.h>
-#include <mach/xc.h>
-#include <linux/platform_data/eth-netx.h>
-
-/* XC Fifo Offsets */
-#define EMPTY_PTR_FIFO(xcno) (0 + ((xcno) << 3)) /* Index of the empty pointer FIFO */
-#define IND_FIFO_PORT_HI(xcno) (1 + ((xcno) << 3)) /* Index of the FIFO where received */
- /* Data packages are indicated by XC */
-#define IND_FIFO_PORT_LO(xcno) (2 + ((xcno) << 3)) /* Index of the FIFO where received */
- /* Data packages are indicated by XC */
-#define REQ_FIFO_PORT_HI(xcno) (3 + ((xcno) << 3)) /* Index of the FIFO where Data packages */
- /* have to be indicated by ARM which */
- /* shall be sent */
-#define REQ_FIFO_PORT_LO(xcno) (4 + ((xcno) << 3)) /* Index of the FIFO where Data packages */
- /* have to be indicated by ARM which shall */
- /* be sent */
-#define CON_FIFO_PORT_HI(xcno) (5 + ((xcno) << 3)) /* Index of the FIFO where sent Data packages */
- /* are confirmed */
-#define CON_FIFO_PORT_LO(xcno) (6 + ((xcno) << 3)) /* Index of the FIFO where sent Data */
- /* packages are confirmed */
-#define PFIFO_MASK(xcno) (0x7f << (xcno*8))
-
-#define FIFO_PTR_FRAMELEN_SHIFT 0
-#define FIFO_PTR_FRAMELEN_MASK (0x7ff << 0)
-#define FIFO_PTR_FRAMELEN(len) (((len) << 0) & FIFO_PTR_FRAMELEN_MASK)
-#define FIFO_PTR_TIMETRIG (1<<11)
-#define FIFO_PTR_MULTI_REQ
-#define FIFO_PTR_ORIGIN (1<<14)
-#define FIFO_PTR_VLAN (1<<15)
-#define FIFO_PTR_FRAMENO_SHIFT 16
-#define FIFO_PTR_FRAMENO_MASK (0x3f << 16)
-#define FIFO_PTR_FRAMENO(no) (((no) << 16) & FIFO_PTR_FRAMENO_MASK)
-#define FIFO_PTR_SEGMENT_SHIFT 22
-#define FIFO_PTR_SEGMENT_MASK (0xf << 22)
-#define FIFO_PTR_SEGMENT(seg) (((seg) & 0xf) << 22)
-#define FIFO_PTR_ERROR_SHIFT 28
-#define FIFO_PTR_ERROR_MASK (0xf << 28)
-
-#define ISR_LINK_STATUS_CHANGE (1<<4)
-#define ISR_IND_LO (1<<3)
-#define ISR_CON_LO (1<<2)
-#define ISR_IND_HI (1<<1)
-#define ISR_CON_HI (1<<0)
-
-#define ETH_MAC_LOCAL_CONFIG 0x1560
-#define ETH_MAC_4321 0x1564
-#define ETH_MAC_65 0x1568
-
-#define MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT 16
-#define MAC_TRAFFIC_CLASS_ARRANGEMENT_MASK (0xf<<MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT)
-#define MAC_TRAFFIC_CLASS_ARRANGEMENT(x) (((x)<<MAC_TRAFFIC_CLASS_ARRANGEMENT_SHIFT) & MAC_TRAFFIC_CLASS_ARRANGEMENT_MASK)
-#define LOCAL_CONFIG_LINK_STATUS_IRQ_EN (1<<24)
-#define LOCAL_CONFIG_CON_LO_IRQ_EN (1<<23)
-#define LOCAL_CONFIG_CON_HI_IRQ_EN (1<<22)
-#define LOCAL_CONFIG_IND_LO_IRQ_EN (1<<21)
-#define LOCAL_CONFIG_IND_HI_IRQ_EN (1<<20)
-
-#define CARDNAME "netx-eth"
-
-/* LSB must be zero */
-#define INTERNAL_PHY_ADR 0x1c
-
-struct netx_eth_priv {
- void __iomem *sram_base, *xpec_base, *xmac_base;
- int id;
- struct mii_if_info mii;
- u32 msg_enable;
- struct xc *xc;
- spinlock_t lock;
-};
-
-static void netx_eth_set_multicast_list(struct net_device *ndev)
-{
- /* implement me */
-}
-
-static int
-netx_eth_hard_start_xmit(struct sk_buff *skb, struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
- unsigned char *buf = skb->data;
- unsigned int len = skb->len;
-
- spin_lock_irq(&priv->lock);
- memcpy_toio(priv->sram_base + 1560, (void *)buf, len);
- if (len < 60) {
- memset_io(priv->sram_base + 1560 + len, 0, 60 - len);
- len = 60;
- }
-
- pfifo_push(REQ_FIFO_PORT_LO(priv->id),
- FIFO_PTR_SEGMENT(priv->id) |
- FIFO_PTR_FRAMENO(1) |
- FIFO_PTR_FRAMELEN(len));
-
- ndev->stats.tx_packets++;
- ndev->stats.tx_bytes += skb->len;
-
- netif_stop_queue(ndev);
- spin_unlock_irq(&priv->lock);
- dev_kfree_skb(skb);
-
- return NETDEV_TX_OK;
-}
-
-static void netx_eth_receive(struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
- unsigned int val, frameno, seg, len;
- unsigned char *data;
- struct sk_buff *skb;
-
- val = pfifo_pop(IND_FIFO_PORT_LO(priv->id));
-
- frameno = (val & FIFO_PTR_FRAMENO_MASK) >> FIFO_PTR_FRAMENO_SHIFT;
- seg = (val & FIFO_PTR_SEGMENT_MASK) >> FIFO_PTR_SEGMENT_SHIFT;
- len = (val & FIFO_PTR_FRAMELEN_MASK) >> FIFO_PTR_FRAMELEN_SHIFT;
-
- skb = netdev_alloc_skb(ndev, len);
- if (unlikely(skb == NULL)) {
- ndev->stats.rx_dropped++;
- return;
- }
-
- data = skb_put(skb, len);
-
- memcpy_fromio(data, priv->sram_base + frameno * 1560, len);
-
- pfifo_push(EMPTY_PTR_FIFO(priv->id),
- FIFO_PTR_SEGMENT(seg) | FIFO_PTR_FRAMENO(frameno));
-
- skb->protocol = eth_type_trans(skb, ndev);
- netif_rx(skb);
- ndev->stats.rx_packets++;
- ndev->stats.rx_bytes += len;
-}
-
-static irqreturn_t
-netx_eth_interrupt(int irq, void *dev_id)
-{
- struct net_device *ndev = dev_id;
- struct netx_eth_priv *priv = netdev_priv(ndev);
- int status;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
-
- status = readl(NETX_PFIFO_XPEC_ISR(priv->id));
- while (status) {
- int fill_level;
- writel(status, NETX_PFIFO_XPEC_ISR(priv->id));
-
- if ((status & ISR_CON_HI) || (status & ISR_IND_HI))
- printk("%s: unexpected status: 0x%08x\n",
- __func__, status);
-
- fill_level =
- readl(NETX_PFIFO_FILL_LEVEL(IND_FIFO_PORT_LO(priv->id)));
- while (fill_level--)
- netx_eth_receive(ndev);
-
- if (status & ISR_CON_LO)
- netif_wake_queue(ndev);
-
- if (status & ISR_LINK_STATUS_CHANGE)
- mii_check_media(&priv->mii, netif_msg_link(priv), 1);
-
- status = readl(NETX_PFIFO_XPEC_ISR(priv->id));
- }
- spin_unlock_irqrestore(&priv->lock, flags);
- return IRQ_HANDLED;
-}
-
-static int netx_eth_open(struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
-
- if (request_irq
- (ndev->irq, netx_eth_interrupt, IRQF_SHARED, ndev->name, ndev))
- return -EAGAIN;
-
- writel(ndev->dev_addr[0] |
- ndev->dev_addr[1]<<8 |
- ndev->dev_addr[2]<<16 |
- ndev->dev_addr[3]<<24,
- priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_4321);
- writel(ndev->dev_addr[4] |
- ndev->dev_addr[5]<<8,
- priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_65);
-
- writel(LOCAL_CONFIG_LINK_STATUS_IRQ_EN |
- LOCAL_CONFIG_CON_LO_IRQ_EN |
- LOCAL_CONFIG_CON_HI_IRQ_EN |
- LOCAL_CONFIG_IND_LO_IRQ_EN |
- LOCAL_CONFIG_IND_HI_IRQ_EN,
- priv->xpec_base + NETX_XPEC_RAM_START_OFS +
- ETH_MAC_LOCAL_CONFIG);
-
- mii_check_media(&priv->mii, netif_msg_link(priv), 1);
- netif_start_queue(ndev);
-
- return 0;
-}
-
-static int netx_eth_close(struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
-
- netif_stop_queue(ndev);
-
- writel(0,
- priv->xpec_base + NETX_XPEC_RAM_START_OFS + ETH_MAC_LOCAL_CONFIG);
-
- free_irq(ndev->irq, ndev);
-
- return 0;
-}
-
-static void netx_eth_timeout(struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
- int i;
-
- printk(KERN_ERR "%s: transmit timed out, resetting\n", ndev->name);
-
- spin_lock_irq(&priv->lock);
-
- xc_reset(priv->xc);
- xc_start(priv->xc);
-
- for (i=2; i<=18; i++)
- pfifo_push(EMPTY_PTR_FIFO(priv->id),
- FIFO_PTR_FRAMENO(i) | FIFO_PTR_SEGMENT(priv->id));
-
- spin_unlock_irq(&priv->lock);
-
- netif_wake_queue(ndev);
-}
-
-static int
-netx_eth_phy_read(struct net_device *ndev, int phy_id, int reg)
-{
- unsigned int val;
-
- val = MIIMU_SNRDY | MIIMU_PREAMBLE | MIIMU_PHYADDR(phy_id) |
- MIIMU_REGADDR(reg) | MIIMU_PHY_NRES;
-
- writel(val, NETX_MIIMU);
- while (readl(NETX_MIIMU) & MIIMU_SNRDY);
-
- return readl(NETX_MIIMU) >> 16;
-
-}
-
-static void
-netx_eth_phy_write(struct net_device *ndev, int phy_id, int reg, int value)
-{
- unsigned int val;
-
- val = MIIMU_SNRDY | MIIMU_PREAMBLE | MIIMU_PHYADDR(phy_id) |
- MIIMU_REGADDR(reg) | MIIMU_PHY_NRES | MIIMU_OPMODE_WRITE |
- MIIMU_DATA(value);
-
- writel(val, NETX_MIIMU);
- while (readl(NETX_MIIMU) & MIIMU_SNRDY);
-}
-
-static const struct net_device_ops netx_eth_netdev_ops = {
- .ndo_open = netx_eth_open,
- .ndo_stop = netx_eth_close,
- .ndo_start_xmit = netx_eth_hard_start_xmit,
- .ndo_tx_timeout = netx_eth_timeout,
- .ndo_set_rx_mode = netx_eth_set_multicast_list,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int netx_eth_enable(struct net_device *ndev)
-{
- struct netx_eth_priv *priv = netdev_priv(ndev);
- unsigned int mac4321, mac65;
- int running, i, ret;
- bool inv_mac_addr = false;
-
- ndev->netdev_ops = &netx_eth_netdev_ops;
- ndev->watchdog_timeo = msecs_to_jiffies(5000);
-
- priv->msg_enable = NETIF_MSG_LINK;
- priv->mii.phy_id_mask = 0x1f;
- priv->mii.reg_num_mask = 0x1f;
- priv->mii.force_media = 0;
- priv->mii.full_duplex = 0;
- priv->mii.dev = ndev;
- priv->mii.mdio_read = netx_eth_phy_read;
- priv->mii.mdio_write = netx_eth_phy_write;
- priv->mii.phy_id = INTERNAL_PHY_ADR + priv->id;
-
- running = xc_running(priv->xc);
- xc_stop(priv->xc);
-
- /* if the xc engine is already running, assume the bootloader has
- * loaded the firmware for us
- */
- if (running) {
- /* get Node Address from hardware */
- mac4321 = readl(priv->xpec_base +
- NETX_XPEC_RAM_START_OFS + ETH_MAC_4321);
- mac65 = readl(priv->xpec_base +
- NETX_XPEC_RAM_START_OFS + ETH_MAC_65);
-
- ndev->dev_addr[0] = mac4321 & 0xff;
- ndev->dev_addr[1] = (mac4321 >> 8) & 0xff;
- ndev->dev_addr[2] = (mac4321 >> 16) & 0xff;
- ndev->dev_addr[3] = (mac4321 >> 24) & 0xff;
- ndev->dev_addr[4] = mac65 & 0xff;
- ndev->dev_addr[5] = (mac65 >> 8) & 0xff;
- } else {
- if (xc_request_firmware(priv->xc)) {
- printk(CARDNAME ": requesting firmware failed\n");
- return -ENODEV;
- }
- }
-
- xc_reset(priv->xc);
- xc_start(priv->xc);
-
- if (!is_valid_ether_addr(ndev->dev_addr))
- inv_mac_addr = true;
-
- for (i=2; i<=18; i++)
- pfifo_push(EMPTY_PTR_FIFO(priv->id),
- FIFO_PTR_FRAMENO(i) | FIFO_PTR_SEGMENT(priv->id));
-
- ret = register_netdev(ndev);
- if (inv_mac_addr)
- printk("%s: Invalid ethernet MAC address. Please set using ip\n",
- ndev->name);
-
- return ret;
-}
-
-static int netx_eth_drv_probe(struct platform_device *pdev)
-{
- struct netx_eth_priv *priv;
- struct net_device *ndev;
- struct netxeth_platform_data *pdata;
- int ret;
-
- ndev = alloc_etherdev(sizeof (struct netx_eth_priv));
- if (!ndev) {
- ret = -ENOMEM;
- goto exit;
- }
- SET_NETDEV_DEV(ndev, &pdev->dev);
-
- platform_set_drvdata(pdev, ndev);
-
- priv = netdev_priv(ndev);
-
- pdata = dev_get_platdata(&pdev->dev);
- priv->xc = request_xc(pdata->xcno, &pdev->dev);
- if (!priv->xc) {
- dev_err(&pdev->dev, "unable to request xc engine\n");
- ret = -ENODEV;
- goto exit_free_netdev;
- }
-
- ndev->irq = priv->xc->irq;
- priv->id = pdev->id;
- priv->xpec_base = priv->xc->xpec_base;
- priv->xmac_base = priv->xc->xmac_base;
- priv->sram_base = priv->xc->sram_base;
-
- spin_lock_init(&priv->lock);
-
- ret = pfifo_request(PFIFO_MASK(priv->id));
- if (ret) {
- printk("unable to request PFIFO\n");
- goto exit_free_xc;
- }
-
- ret = netx_eth_enable(ndev);
- if (ret)
- goto exit_free_pfifo;
-
- return 0;
-exit_free_pfifo:
- pfifo_free(PFIFO_MASK(priv->id));
-exit_free_xc:
- free_xc(priv->xc);
-exit_free_netdev:
- free_netdev(ndev);
-exit:
- return ret;
-}
-
-static int netx_eth_drv_remove(struct platform_device *pdev)
-{
- struct net_device *ndev = platform_get_drvdata(pdev);
- struct netx_eth_priv *priv = netdev_priv(ndev);
-
- unregister_netdev(ndev);
- xc_stop(priv->xc);
- free_xc(priv->xc);
- free_netdev(ndev);
- pfifo_free(PFIFO_MASK(priv->id));
-
- return 0;
-}
-
-static int netx_eth_drv_suspend(struct platform_device *pdev, pm_message_t state)
-{
- dev_err(&pdev->dev, "suspend not implemented\n");
- return 0;
-}
-
-static int netx_eth_drv_resume(struct platform_device *pdev)
-{
- dev_err(&pdev->dev, "resume not implemented\n");
- return 0;
-}
-
-static struct platform_driver netx_eth_driver = {
- .probe = netx_eth_drv_probe,
- .remove = netx_eth_drv_remove,
- .suspend = netx_eth_drv_suspend,
- .resume = netx_eth_drv_resume,
- .driver = {
- .name = CARDNAME,
- },
-};
-
-static int __init netx_eth_init(void)
-{
- unsigned int phy_control, val;
-
- printk("NetX Ethernet driver\n");
-
- phy_control = PHY_CONTROL_PHY_ADDRESS(INTERNAL_PHY_ADR>>1) |
- PHY_CONTROL_PHY1_MODE(PHY_MODE_ALL) |
- PHY_CONTROL_PHY1_AUTOMDIX |
- PHY_CONTROL_PHY1_EN |
- PHY_CONTROL_PHY0_MODE(PHY_MODE_ALL) |
- PHY_CONTROL_PHY0_AUTOMDIX |
- PHY_CONTROL_PHY0_EN |
- PHY_CONTROL_CLK_XLATIN;
-
- val = readl(NETX_SYSTEM_IOC_ACCESS_KEY);
- writel(val, NETX_SYSTEM_IOC_ACCESS_KEY);
-
- writel(phy_control | PHY_CONTROL_RESET, NETX_SYSTEM_PHY_CONTROL);
- udelay(100);
-
- val = readl(NETX_SYSTEM_IOC_ACCESS_KEY);
- writel(val, NETX_SYSTEM_IOC_ACCESS_KEY);
-
- writel(phy_control, NETX_SYSTEM_PHY_CONTROL);
-
- return platform_driver_register(&netx_eth_driver);
-}
-
-static void __exit netx_eth_cleanup(void)
-{
- platform_driver_unregister(&netx_eth_driver);
-}
-
-module_init(netx_eth_init);
-module_exit(netx_eth_cleanup);
-
-MODULE_AUTHOR("Sascha Hauer, Pengutronix");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" CARDNAME);
-MODULE_FIRMWARE("xc0.bin");
-MODULE_FIRMWARE("xc1.bin");
-MODULE_FIRMWARE("xc2.bin");
projects / mirror_ubuntu-hirsute-kernel.git / commitdiff