source "drivers/net/arm/Kconfig"
-config MIPS_SIM_NET
- tristate "MIPS simulator Network device"
- depends on MIPS_SIM
- help
- The MIPSNET device is a simple Ethernet network device which is
- emulated by the MIPS Simulator.
- If you are not using a MIPSsim or are unsure, say N.
-
config SH_ETH
tristate "Renesas SuperH Ethernet support"
depends on SUPERH && \
obj-$(CONFIG_MACVTAP) += macvtap.o
obj-$(CONFIG_DEFXX) += defxx.o
obj-$(CONFIG_EQUALIZER) += eql.o
-obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
obj-$(CONFIG_TUN) += tun.o
obj-$(CONFIG_VETH) += veth.o
obj-$(CONFIG_NET_NETX) += netx-eth.o
source "drivers/net/ethernet/marvell/Kconfig"
source "drivers/net/ethernet/mellanox/Kconfig"
source "drivers/net/ethernet/micrel/Kconfig"
+
+config MIPS_SIM_NET
+ tristate "MIPS simulator Network device"
+ depends on MIPS_SIM
+ ---help---
+ The MIPSNET device is a simple Ethernet network device which is
+ emulated by the MIPS Simulator.
+ If you are not using a MIPSsim or are unsure, say N.
+
source "drivers/net/ethernet/myricom/Kconfig"
source "drivers/net/ethernet/natsemi/Kconfig"
source "drivers/net/ethernet/8390/Kconfig"
obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/
obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
obj-$(CONFIG_NET_VENDOR_MICREL) += micrel/
+obj-$(CONFIG_MIPS_SIM_NET) += mipsnet.o
obj-$(CONFIG_NET_VENDOR_MYRI) += myricom/
obj-$(CONFIG_NET_VENDOR_NATSEMI) += natsemi/
obj-$(CONFIG_NET_VENDOR_NUVOTON) += nuvoton/
--- /dev/null
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <asm/mips-boards/simint.h>
+
+#define MIPSNET_VERSION "2007-11-17"
+
+/*
+ * Net status/control block as seen by sw in the core.
+ */
+struct mipsnet_regs {
+ /*
+ * Device info for probing, reads as MIPSNET%d where %d is some
+ * form of version.
+ */
+ u64 devId; /*0x00 */
+
+ /*
+ * read only busy flag.
+ * Set and cleared by the Net Device to indicate that an rx or a tx
+ * is in progress.
+ */
+ u32 busy; /*0x08 */
+
+ /*
+ * Set by the Net Device.
+ * The device will set it once data has been received.
+ * The value is the number of bytes that should be read from
+ * rxDataBuffer. The value will decrease till 0 until all the data
+ * from rxDataBuffer has been read.
+ */
+ u32 rxDataCount; /*0x0c */
+#define MIPSNET_MAX_RXTX_DATACOUNT (1 << 16)
+
+ /*
+ * Settable from the MIPS core, cleared by the Net Device.
+ * The core should set the number of bytes it wants to send,
+ * then it should write those bytes of data to txDataBuffer.
+ * The device will clear txDataCount has been processed (not
+ * necessarily sent).
+ */
+ u32 txDataCount; /*0x10 */
+
+ /*
+ * Interrupt control
+ *
+ * Used to clear the interrupted generated by this dev.
+ * Write a 1 to clear the interrupt. (except bit31).
+ *
+ * Bit0 is set if it was a tx-done interrupt.
+ * Bit1 is set when new rx-data is available.
+ * Until this bit is cleared there will be no other RXs.
+ *
+ * Bit31 is used for testing, it clears after a read.
+ * Writing 1 to this bit will cause an interrupt to be generated.
+ * To clear the test interrupt, write 0 to this register.
+ */
+ u32 interruptControl; /*0x14 */
+#define MIPSNET_INTCTL_TXDONE (1u << 0)
+#define MIPSNET_INTCTL_RXDONE (1u << 1)
+#define MIPSNET_INTCTL_TESTBIT (1u << 31)
+
+ /*
+ * Readonly core-specific interrupt info for the device to signal
+ * the core. The meaning of the contents of this field might change.
+ */
+ /* XXX: the whole memIntf interrupt scheme is messy: the device
+ * should have no control what so ever of what VPE/register set is
+ * being used.
+ * The MemIntf should only expose interrupt lines, and something in
+ * the config should be responsible for the line<->core/vpe bindings.
+ */
+ u32 interruptInfo; /*0x18 */
+
+ /*
+ * This is where the received data is read out.
+ * There is more data to read until rxDataReady is 0.
+ * Only 1 byte at this regs offset is used.
+ */
+ u32 rxDataBuffer; /*0x1c */
+
+ /*
+ * This is where the data to transmit is written.
+ * Data should be written for the amount specified in the
+ * txDataCount register.
+ * Only 1 byte at this regs offset is used.
+ */
+ u32 txDataBuffer; /*0x20 */
+};
+
+#define regaddr(dev, field) \
+ (dev->base_addr + offsetof(struct mipsnet_regs, field))
+
+static char mipsnet_string[] = "mipsnet";
+
+/*
+ * Copy data from the MIPSNET rx data port
+ */
+static int ioiocpy_frommipsnet(struct net_device *dev, unsigned char *kdata,
+ int len)
+{
+ for (; len > 0; len--, kdata++)
+ *kdata = inb(regaddr(dev, rxDataBuffer));
+
+ return inl(regaddr(dev, rxDataCount));
+}
+
+static inline void mipsnet_put_todevice(struct net_device *dev,
+ struct sk_buff *skb)
+{
+ int count_to_go = skb->len;
+ char *buf_ptr = skb->data;
+
+ outl(skb->len, regaddr(dev, txDataCount));
+
+ for (; count_to_go; buf_ptr++, count_to_go--)
+ outb(*buf_ptr, regaddr(dev, txDataBuffer));
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ dev_kfree_skb(skb);
+}
+
+static int mipsnet_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ /*
+ * Only one packet at a time. Once TXDONE interrupt is serviced, the
+ * queue will be restarted.
+ */
+ netif_stop_queue(dev);
+ mipsnet_put_todevice(dev, skb);
+
+ return NETDEV_TX_OK;
+}
+
+static inline ssize_t mipsnet_get_fromdev(struct net_device *dev, size_t len)
+{
+ struct sk_buff *skb;
+
+ if (!len)
+ return len;
+
+ skb = dev_alloc_skb(len + NET_IP_ALIGN);
+ if (!skb) {
+ dev->stats.rx_dropped++;
+ return -ENOMEM;
+ }
+
+ skb_reserve(skb, NET_IP_ALIGN);
+ if (ioiocpy_frommipsnet(dev, skb_put(skb, len), len))
+ return -EFAULT;
+
+ skb->protocol = eth_type_trans(skb, dev);
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ netif_rx(skb);
+
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += len;
+
+ return len;
+}
+
+static irqreturn_t mipsnet_interrupt(int irq, void *dev_id)
+{
+ struct net_device *dev = dev_id;
+ u32 int_flags;
+ irqreturn_t ret = IRQ_NONE;
+
+ if (irq != dev->irq)
+ goto out_badirq;
+
+ /* TESTBIT is cleared on read. */
+ int_flags = inl(regaddr(dev, interruptControl));
+ if (int_flags & MIPSNET_INTCTL_TESTBIT) {
+ /* TESTBIT takes effect after a write with 0. */
+ outl(0, regaddr(dev, interruptControl));
+ ret = IRQ_HANDLED;
+ } else if (int_flags & MIPSNET_INTCTL_TXDONE) {
+ /* Only one packet at a time, we are done. */
+ dev->stats.tx_packets++;
+ netif_wake_queue(dev);
+ outl(MIPSNET_INTCTL_TXDONE,
+ regaddr(dev, interruptControl));
+ ret = IRQ_HANDLED;
+ } else if (int_flags & MIPSNET_INTCTL_RXDONE) {
+ mipsnet_get_fromdev(dev, inl(regaddr(dev, rxDataCount)));
+ outl(MIPSNET_INTCTL_RXDONE, regaddr(dev, interruptControl));
+ ret = IRQ_HANDLED;
+ }
+ return ret;
+
+out_badirq:
+ printk(KERN_INFO "%s: %s(): irq %d for unknown device\n",
+ dev->name, __func__, irq);
+ return ret;
+}
+
+static int mipsnet_open(struct net_device *dev)
+{
+ int err;
+
+ err = request_irq(dev->irq, mipsnet_interrupt,
+ IRQF_SHARED, dev->name, (void *) dev);
+ if (err) {
+ release_region(dev->base_addr, sizeof(struct mipsnet_regs));
+ return err;
+ }
+
+ netif_start_queue(dev);
+
+ /* test interrupt handler */
+ outl(MIPSNET_INTCTL_TESTBIT, regaddr(dev, interruptControl));
+
+ return 0;
+}
+
+static int mipsnet_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ free_irq(dev->irq, dev);
+ return 0;
+}
+
+static void mipsnet_set_mclist(struct net_device *dev)
+{
+}
+
+static const struct net_device_ops mipsnet_netdev_ops = {
+ .ndo_open = mipsnet_open,
+ .ndo_stop = mipsnet_close,
+ .ndo_start_xmit = mipsnet_xmit,
+ .ndo_set_multicast_list = mipsnet_set_mclist,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+static int __devinit mipsnet_probe(struct platform_device *dev)
+{
+ struct net_device *netdev;
+ int err;
+
+ netdev = alloc_etherdev(0);
+ if (!netdev) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ platform_set_drvdata(dev, netdev);
+
+ netdev->netdev_ops = &mipsnet_netdev_ops;
+
+ /*
+ * TODO: probe for these or load them from PARAM
+ */
+ netdev->base_addr = 0x4200;
+ netdev->irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB0 +
+ inl(regaddr(netdev, interruptInfo));
+
+ /* Get the io region now, get irq on open() */
+ if (!request_region(netdev->base_addr, sizeof(struct mipsnet_regs),
+ "mipsnet")) {
+ err = -EBUSY;
+ goto out_free_netdev;
+ }
+
+ /*
+ * Lacking any better mechanism to allocate a MAC address we use a
+ * random one ...
+ */
+ random_ether_addr(netdev->dev_addr);
+
+ err = register_netdev(netdev);
+ if (err) {
+ printk(KERN_ERR "MIPSNet: failed to register netdev.\n");
+ goto out_free_region;
+ }
+
+ return 0;
+
+out_free_region:
+ release_region(netdev->base_addr, sizeof(struct mipsnet_regs));
+
+out_free_netdev:
+ free_netdev(netdev);
+
+out:
+ return err;
+}
+
+static int __devexit mipsnet_device_remove(struct platform_device *device)
+{
+ struct net_device *dev = platform_get_drvdata(device);
+
+ unregister_netdev(dev);
+ release_region(dev->base_addr, sizeof(struct mipsnet_regs));
+ free_netdev(dev);
+ platform_set_drvdata(device, NULL);
+
+ return 0;
+}
+
+static struct platform_driver mipsnet_driver = {
+ .driver = {
+ .name = mipsnet_string,
+ .owner = THIS_MODULE,
+ },
+ .probe = mipsnet_probe,
+ .remove = __devexit_p(mipsnet_device_remove),
+};
+
+static int __init mipsnet_init_module(void)
+{
+ int err;
+
+ printk(KERN_INFO "MIPSNet Ethernet driver. Version: %s. "
+ "(c)2005 MIPS Technologies, Inc.\n", MIPSNET_VERSION);
+
+ err = platform_driver_register(&mipsnet_driver);
+ if (err)
+ printk(KERN_ERR "Driver registration failed\n");
+
+ return err;
+}
+
+static void __exit mipsnet_exit_module(void)
+{
+ platform_driver_unregister(&mipsnet_driver);
+}
+
+module_init(mipsnet_init_module);
+module_exit(mipsnet_exit_module);
+++ /dev/null
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/platform_device.h>
-#include <asm/mips-boards/simint.h>
-
-#define MIPSNET_VERSION "2007-11-17"
-
-/*
- * Net status/control block as seen by sw in the core.
- */
-struct mipsnet_regs {
- /*
- * Device info for probing, reads as MIPSNET%d where %d is some
- * form of version.
- */
- u64 devId; /*0x00 */
-
- /*
- * read only busy flag.
- * Set and cleared by the Net Device to indicate that an rx or a tx
- * is in progress.
- */
- u32 busy; /*0x08 */
-
- /*
- * Set by the Net Device.
- * The device will set it once data has been received.
- * The value is the number of bytes that should be read from
- * rxDataBuffer. The value will decrease till 0 until all the data
- * from rxDataBuffer has been read.
- */
- u32 rxDataCount; /*0x0c */
-#define MIPSNET_MAX_RXTX_DATACOUNT (1 << 16)
-
- /*
- * Settable from the MIPS core, cleared by the Net Device.
- * The core should set the number of bytes it wants to send,
- * then it should write those bytes of data to txDataBuffer.
- * The device will clear txDataCount has been processed (not
- * necessarily sent).
- */
- u32 txDataCount; /*0x10 */
-
- /*
- * Interrupt control
- *
- * Used to clear the interrupted generated by this dev.
- * Write a 1 to clear the interrupt. (except bit31).
- *
- * Bit0 is set if it was a tx-done interrupt.
- * Bit1 is set when new rx-data is available.
- * Until this bit is cleared there will be no other RXs.
- *
- * Bit31 is used for testing, it clears after a read.
- * Writing 1 to this bit will cause an interrupt to be generated.
- * To clear the test interrupt, write 0 to this register.
- */
- u32 interruptControl; /*0x14 */
-#define MIPSNET_INTCTL_TXDONE (1u << 0)
-#define MIPSNET_INTCTL_RXDONE (1u << 1)
-#define MIPSNET_INTCTL_TESTBIT (1u << 31)
-
- /*
- * Readonly core-specific interrupt info for the device to signal
- * the core. The meaning of the contents of this field might change.
- */
- /* XXX: the whole memIntf interrupt scheme is messy: the device
- * should have no control what so ever of what VPE/register set is
- * being used.
- * The MemIntf should only expose interrupt lines, and something in
- * the config should be responsible for the line<->core/vpe bindings.
- */
- u32 interruptInfo; /*0x18 */
-
- /*
- * This is where the received data is read out.
- * There is more data to read until rxDataReady is 0.
- * Only 1 byte at this regs offset is used.
- */
- u32 rxDataBuffer; /*0x1c */
-
- /*
- * This is where the data to transmit is written.
- * Data should be written for the amount specified in the
- * txDataCount register.
- * Only 1 byte at this regs offset is used.
- */
- u32 txDataBuffer; /*0x20 */
-};
-
-#define regaddr(dev, field) \
- (dev->base_addr + offsetof(struct mipsnet_regs, field))
-
-static char mipsnet_string[] = "mipsnet";
-
-/*
- * Copy data from the MIPSNET rx data port
- */
-static int ioiocpy_frommipsnet(struct net_device *dev, unsigned char *kdata,
- int len)
-{
- for (; len > 0; len--, kdata++)
- *kdata = inb(regaddr(dev, rxDataBuffer));
-
- return inl(regaddr(dev, rxDataCount));
-}
-
-static inline void mipsnet_put_todevice(struct net_device *dev,
- struct sk_buff *skb)
-{
- int count_to_go = skb->len;
- char *buf_ptr = skb->data;
-
- outl(skb->len, regaddr(dev, txDataCount));
-
- for (; count_to_go; buf_ptr++, count_to_go--)
- outb(*buf_ptr, regaddr(dev, txDataBuffer));
-
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- dev_kfree_skb(skb);
-}
-
-static int mipsnet_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- /*
- * Only one packet at a time. Once TXDONE interrupt is serviced, the
- * queue will be restarted.
- */
- netif_stop_queue(dev);
- mipsnet_put_todevice(dev, skb);
-
- return NETDEV_TX_OK;
-}
-
-static inline ssize_t mipsnet_get_fromdev(struct net_device *dev, size_t len)
-{
- struct sk_buff *skb;
-
- if (!len)
- return len;
-
- skb = dev_alloc_skb(len + NET_IP_ALIGN);
- if (!skb) {
- dev->stats.rx_dropped++;
- return -ENOMEM;
- }
-
- skb_reserve(skb, NET_IP_ALIGN);
- if (ioiocpy_frommipsnet(dev, skb_put(skb, len), len))
- return -EFAULT;
-
- skb->protocol = eth_type_trans(skb, dev);
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-
- netif_rx(skb);
-
- dev->stats.rx_packets++;
- dev->stats.rx_bytes += len;
-
- return len;
-}
-
-static irqreturn_t mipsnet_interrupt(int irq, void *dev_id)
-{
- struct net_device *dev = dev_id;
- u32 int_flags;
- irqreturn_t ret = IRQ_NONE;
-
- if (irq != dev->irq)
- goto out_badirq;
-
- /* TESTBIT is cleared on read. */
- int_flags = inl(regaddr(dev, interruptControl));
- if (int_flags & MIPSNET_INTCTL_TESTBIT) {
- /* TESTBIT takes effect after a write with 0. */
- outl(0, regaddr(dev, interruptControl));
- ret = IRQ_HANDLED;
- } else if (int_flags & MIPSNET_INTCTL_TXDONE) {
- /* Only one packet at a time, we are done. */
- dev->stats.tx_packets++;
- netif_wake_queue(dev);
- outl(MIPSNET_INTCTL_TXDONE,
- regaddr(dev, interruptControl));
- ret = IRQ_HANDLED;
- } else if (int_flags & MIPSNET_INTCTL_RXDONE) {
- mipsnet_get_fromdev(dev, inl(regaddr(dev, rxDataCount)));
- outl(MIPSNET_INTCTL_RXDONE, regaddr(dev, interruptControl));
- ret = IRQ_HANDLED;
- }
- return ret;
-
-out_badirq:
- printk(KERN_INFO "%s: %s(): irq %d for unknown device\n",
- dev->name, __func__, irq);
- return ret;
-}
-
-static int mipsnet_open(struct net_device *dev)
-{
- int err;
-
- err = request_irq(dev->irq, mipsnet_interrupt,
- IRQF_SHARED, dev->name, (void *) dev);
- if (err) {
- release_region(dev->base_addr, sizeof(struct mipsnet_regs));
- return err;
- }
-
- netif_start_queue(dev);
-
- /* test interrupt handler */
- outl(MIPSNET_INTCTL_TESTBIT, regaddr(dev, interruptControl));
-
- return 0;
-}
-
-static int mipsnet_close(struct net_device *dev)
-{
- netif_stop_queue(dev);
- free_irq(dev->irq, dev);
- return 0;
-}
-
-static void mipsnet_set_mclist(struct net_device *dev)
-{
-}
-
-static const struct net_device_ops mipsnet_netdev_ops = {
- .ndo_open = mipsnet_open,
- .ndo_stop = mipsnet_close,
- .ndo_start_xmit = mipsnet_xmit,
- .ndo_set_multicast_list = mipsnet_set_mclist,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-static int __devinit mipsnet_probe(struct platform_device *dev)
-{
- struct net_device *netdev;
- int err;
-
- netdev = alloc_etherdev(0);
- if (!netdev) {
- err = -ENOMEM;
- goto out;
- }
-
- platform_set_drvdata(dev, netdev);
-
- netdev->netdev_ops = &mipsnet_netdev_ops;
-
- /*
- * TODO: probe for these or load them from PARAM
- */
- netdev->base_addr = 0x4200;
- netdev->irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB0 +
- inl(regaddr(netdev, interruptInfo));
-
- /* Get the io region now, get irq on open() */
- if (!request_region(netdev->base_addr, sizeof(struct mipsnet_regs),
- "mipsnet")) {
- err = -EBUSY;
- goto out_free_netdev;
- }
-
- /*
- * Lacking any better mechanism to allocate a MAC address we use a
- * random one ...
- */
- random_ether_addr(netdev->dev_addr);
-
- err = register_netdev(netdev);
- if (err) {
- printk(KERN_ERR "MIPSNet: failed to register netdev.\n");
- goto out_free_region;
- }
-
- return 0;
-
-out_free_region:
- release_region(netdev->base_addr, sizeof(struct mipsnet_regs));
-
-out_free_netdev:
- free_netdev(netdev);
-
-out:
- return err;
-}
-
-static int __devexit mipsnet_device_remove(struct platform_device *device)
-{
- struct net_device *dev = platform_get_drvdata(device);
-
- unregister_netdev(dev);
- release_region(dev->base_addr, sizeof(struct mipsnet_regs));
- free_netdev(dev);
- platform_set_drvdata(device, NULL);
-
- return 0;
-}
-
-static struct platform_driver mipsnet_driver = {
- .driver = {
- .name = mipsnet_string,
- .owner = THIS_MODULE,
- },
- .probe = mipsnet_probe,
- .remove = __devexit_p(mipsnet_device_remove),
-};
-
-static int __init mipsnet_init_module(void)
-{
- int err;
-
- printk(KERN_INFO "MIPSNet Ethernet driver. Version: %s. "
- "(c)2005 MIPS Technologies, Inc.\n", MIPSNET_VERSION);
-
- err = platform_driver_register(&mipsnet_driver);
- if (err)
- printk(KERN_ERR "Driver registration failed\n");
-
- return err;
-}
-
-static void __exit mipsnet_exit_module(void)
-{
- platform_driver_unregister(&mipsnet_driver);
-}
-
-module_init(mipsnet_init_module);
-module_exit(mipsnet_exit_module);
projects / firefly-linux-kernel-4.4.55.git / commitdiff