--- /dev/null
+/*
+ * Amiga Linux/m68k and Linux/PPC Zorro NS8390 Ethernet Driver
+ *
+ * (C) Copyright 1998-2000 by some Elitist 680x0 Users(TM)
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * This program is based on all the other NE2000 drivers for Linux
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of the Linux
+ * distribution for more details.
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * The Ariadne II and X-Surf are Zorro-II boards containing Realtek RTL8019AS
+ * Ethernet Controllers.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/zorro.h>
+#include <linux/jiffies.h>
+
+#include <asm/irq.h>
+#include <asm/amigaints.h>
+#include <asm/amigahw.h>
+
+#define EI_SHIFT(x) (ei_local->reg_offset[x])
+#define ei_inb(port) in_8(port)
+#define ei_outb(val, port) out_8(port, val)
+#define ei_inb_p(port) in_8(port)
+#define ei_outb_p(val, port) out_8(port, val)
+
+static const char version[] =
+ "8390.c:v1.10cvs 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+static u32 zorro8390_msg_enable;
+
+#include "lib8390.c"
+
+#define DRV_NAME "zorro8390"
+
+#define NE_BASE (dev->base_addr)
+#define NE_CMD (0x00 * 2)
+#define NE_DATAPORT (0x10 * 2) /* NatSemi-defined port window offset */
+#define NE_RESET (0x1f * 2) /* Issue a read to reset,
+ * a write to clear. */
+#define NE_IO_EXTENT (0x20 * 2)
+
+#define NE_EN0_ISR (0x07 * 2)
+#define NE_EN0_DCFG (0x0e * 2)
+
+#define NE_EN0_RSARLO (0x08 * 2)
+#define NE_EN0_RSARHI (0x09 * 2)
+#define NE_EN0_RCNTLO (0x0a * 2)
+#define NE_EN0_RXCR (0x0c * 2)
+#define NE_EN0_TXCR (0x0d * 2)
+#define NE_EN0_RCNTHI (0x0b * 2)
+#define NE_EN0_IMR (0x0f * 2)
+
+#define NESM_START_PG 0x40 /* First page of TX buffer */
+#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
+
+#define WORDSWAP(a) ((((a) >> 8) & 0xff) | ((a) << 8))
+
+static struct card_info {
+ zorro_id id;
+ const char *name;
+ unsigned int offset;
+} cards[] = {
+ { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
+ { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
+};
+
+/* Hard reset the card. This used to pause for the same period that a
+ * 8390 reset command required, but that shouldn't be necessary.
+ */
+static void zorro8390_reset_8390(struct net_device *dev)
+{
+ unsigned long reset_start_time = jiffies;
+ struct ei_device *ei_local = netdev_priv(dev);
+
+ netif_dbg(ei_local, hw, dev, "resetting - t=%ld...\n", jiffies);
+
+ z_writeb(z_readb(NE_BASE + NE_RESET), NE_BASE + NE_RESET);
+
+ ei_status.txing = 0;
+ ei_status.dmaing = 0;
+
+ /* This check _should_not_ be necessary, omit eventually. */
+ while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RESET) == 0)
+ if (time_after(jiffies, reset_start_time + 2 * HZ / 100)) {
+ netdev_warn(dev, "%s: did not complete\n", __func__);
+ break;
+ }
+ z_writeb(ENISR_RESET, NE_BASE + NE_EN0_ISR); /* Ack intr */
+}
+
+/* Grab the 8390 specific header. Similar to the block_input routine, but
+ * we don't need to be concerned with ring wrap as the header will be at
+ * the start of a page, so we optimize accordingly.
+ */
+static void zorro8390_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page)
+{
+ int nic_base = dev->base_addr;
+ int cnt;
+ short *ptrs;
+
+ /* This *shouldn't* happen.
+ * If it does, it's the last thing you'll see
+ */
+ if (ei_status.dmaing) {
+ netdev_warn(dev,
+ "%s: DMAing conflict [DMAstat:%d][irqlock:%d]\n",
+ __func__, ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+
+ ei_status.dmaing |= 0x01;
+ z_writeb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+ z_writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
+ z_writeb(0, nic_base + NE_EN0_RCNTHI);
+ z_writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
+ z_writeb(ring_page, nic_base + NE_EN0_RSARHI);
+ z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+ ptrs = (short *)hdr;
+ for (cnt = 0; cnt < sizeof(struct e8390_pkt_hdr) >> 1; cnt++)
+ *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
+
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr */
+
+ hdr->count = WORDSWAP(hdr->count);
+
+ ei_status.dmaing &= ~0x01;
+}
+
+/* Block input and output, similar to the Crynwr packet driver.
+ * If you are porting to a new ethercard, look at the packet driver source
+ * for hints. The NEx000 doesn't share the on-board packet memory --
+ * you have to put the packet out through the "remote DMA" dataport
+ * using z_writeb.
+ */
+static void zorro8390_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset)
+{
+ int nic_base = dev->base_addr;
+ char *buf = skb->data;
+ short *ptrs;
+ int cnt;
+
+ /* This *shouldn't* happen.
+ * If it does, it's the last thing you'll see
+ */
+ if (ei_status.dmaing) {
+ netdev_err(dev, "%s: DMAing conflict [DMAstat:%d][irqlock:%d]\n",
+ __func__, ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ z_writeb(E8390_NODMA + E8390_PAGE0 + E8390_START, nic_base + NE_CMD);
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+ z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
+ z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
+ z_writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
+ z_writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
+ z_writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+ ptrs = (short *)buf;
+ for (cnt = 0; cnt < count >> 1; cnt++)
+ *ptrs++ = z_readw(NE_BASE + NE_DATAPORT);
+ if (count & 0x01)
+ buf[count - 1] = z_readb(NE_BASE + NE_DATAPORT);
+
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr */
+ ei_status.dmaing &= ~0x01;
+}
+
+static void zorro8390_block_output(struct net_device *dev, int count,
+ const unsigned char *buf,
+ const int start_page)
+{
+ int nic_base = NE_BASE;
+ unsigned long dma_start;
+ short *ptrs;
+ int cnt;
+
+ /* Round the count up for word writes. Do we need to do this?
+ * What effect will an odd byte count have on the 8390?
+ * I should check someday.
+ */
+ if (count & 0x01)
+ count++;
+
+ /* This *shouldn't* happen.
+ * If it does, it's the last thing you'll see
+ */
+ if (ei_status.dmaing) {
+ netdev_err(dev, "%s: DMAing conflict [DMAstat:%d][irqlock:%d]\n",
+ __func__, ei_status.dmaing, ei_status.irqlock);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ /* We should already be in page 0, but to be safe... */
+ z_writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
+
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+
+ /* Now the normal output. */
+ z_writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
+ z_writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
+ z_writeb(0x00, nic_base + NE_EN0_RSARLO);
+ z_writeb(start_page, nic_base + NE_EN0_RSARHI);
+
+ z_writeb(E8390_RWRITE + E8390_START, nic_base + NE_CMD);
+ ptrs = (short *)buf;
+ for (cnt = 0; cnt < count >> 1; cnt++)
+ z_writew(*ptrs++, NE_BASE + NE_DATAPORT);
+
+ dma_start = jiffies;
+
+ while ((z_readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
+ if (time_after(jiffies, dma_start + 2 * HZ / 100)) {
+ /* 20ms */
+ netdev_warn(dev, "timeout waiting for Tx RDC\n");
+ zorro8390_reset_8390(dev);
+ __NS8390_init(dev, 1);
+ break;
+ }
+
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr */
+ ei_status.dmaing &= ~0x01;
+}
+
+static int zorro8390_open(struct net_device *dev)
+{
+ __ei_open(dev);
+ return 0;
+}
+
+static int zorro8390_close(struct net_device *dev)
+{
+ struct ei_device *ei_local = netdev_priv(dev);
+
+ netif_dbg(ei_local, ifdown, dev, "Shutting down ethercard\n");
+ __ei_close(dev);
+ return 0;
+}
+
+static void zorro8390_remove_one(struct zorro_dev *z)
+{
+ struct net_device *dev = zorro_get_drvdata(z);
+
+ unregister_netdev(dev);
+ free_irq(IRQ_AMIGA_PORTS, dev);
+ release_mem_region(ZTWO_PADDR(dev->base_addr), NE_IO_EXTENT * 2);
+ free_netdev(dev);
+}
+
+static struct zorro_device_id zorro8390_zorro_tbl[] = {
+ { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
+ { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
+ { 0 }
+};
+MODULE_DEVICE_TABLE(zorro, zorro8390_zorro_tbl);
+
+static const struct net_device_ops zorro8390_netdev_ops = {
+ .ndo_open = zorro8390_open,
+ .ndo_stop = zorro8390_close,
+ .ndo_start_xmit = __ei_start_xmit,
+ .ndo_tx_timeout = __ei_tx_timeout,
+ .ndo_get_stats = __ei_get_stats,
+ .ndo_set_rx_mode = __ei_set_multicast_list,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_change_mtu = eth_change_mtu,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = __ei_poll,
+#endif
+};
+
+static int zorro8390_init(struct net_device *dev, unsigned long board,
+ const char *name, void __iomem *ioaddr)
+{
+ int i;
+ int err;
+ unsigned char SA_prom[32];
+ int start_page, stop_page;
+ struct ei_device *ei_local = netdev_priv(dev);
+ static u32 zorro8390_offsets[16] = {
+ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
+ 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
+ };
+
+ /* Reset card. Who knows what dain-bramaged state it was left in. */
+ {
+ unsigned long reset_start_time = jiffies;
+
+ z_writeb(z_readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
+
+ while ((z_readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
+ if (time_after(jiffies,
+ reset_start_time + 2 * HZ / 100)) {
+ netdev_warn(dev, "not found (no reset ack)\n");
+ return -ENODEV;
+ }
+
+ z_writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
+ }
+
+ /* Read the 16 bytes of station address PROM.
+ * We must first initialize registers,
+ * similar to NS8390_init(eifdev, 0).
+ * We can't reliably read the SAPROM address without this.
+ * (I learned the hard way!).
+ */
+ {
+ static const struct {
+ u32 value;
+ u32 offset;
+ } program_seq[] = {
+ {E8390_NODMA + E8390_PAGE0 + E8390_STOP, NE_CMD},
+ /* Select page 0 */
+ {0x48, NE_EN0_DCFG}, /* 0x48: Set byte-wide access */
+ {0x00, NE_EN0_RCNTLO}, /* Clear the count regs */
+ {0x00, NE_EN0_RCNTHI},
+ {0x00, NE_EN0_IMR}, /* Mask completion irq */
+ {0xFF, NE_EN0_ISR},
+ {E8390_RXOFF, NE_EN0_RXCR}, /* 0x20 Set to monitor */
+ {E8390_TXOFF, NE_EN0_TXCR}, /* 0x02 and loopback mode */
+ {32, NE_EN0_RCNTLO},
+ {0x00, NE_EN0_RCNTHI},
+ {0x00, NE_EN0_RSARLO}, /* DMA starting at 0x0000 */
+ {0x00, NE_EN0_RSARHI},
+ {E8390_RREAD + E8390_START, NE_CMD},
+ };
+ for (i = 0; i < ARRAY_SIZE(program_seq); i++)
+ z_writeb(program_seq[i].value,
+ ioaddr + program_seq[i].offset);
+ }
+ for (i = 0; i < 16; i++) {
+ SA_prom[i] = z_readb(ioaddr + NE_DATAPORT);
+ (void)z_readb(ioaddr + NE_DATAPORT);
+ }
+
+ /* We must set the 8390 for word mode. */
+ z_writeb(0x49, ioaddr + NE_EN0_DCFG);
+ start_page = NESM_START_PG;
+ stop_page = NESM_STOP_PG;
+
+ dev->base_addr = (unsigned long)ioaddr;
+ dev->irq = IRQ_AMIGA_PORTS;
+
+ /* Install the Interrupt handler */
+ i = request_irq(IRQ_AMIGA_PORTS, __ei_interrupt,
+ IRQF_SHARED, DRV_NAME, dev);
+ if (i)
+ return i;
+
+ for (i = 0; i < ETH_ALEN; i++)
+ dev->dev_addr[i] = SA_prom[i];
+
+ pr_debug("Found ethernet address: %pM\n", dev->dev_addr);
+
+ ei_status.name = name;
+ ei_status.tx_start_page = start_page;
+ ei_status.stop_page = stop_page;
+ ei_status.word16 = 1;
+
+ ei_status.rx_start_page = start_page + TX_PAGES;
+
+ ei_status.reset_8390 = zorro8390_reset_8390;
+ ei_status.block_input = zorro8390_block_input;
+ ei_status.block_output = zorro8390_block_output;
+ ei_status.get_8390_hdr = zorro8390_get_8390_hdr;
+ ei_status.reg_offset = zorro8390_offsets;
+
+ dev->netdev_ops = &zorro8390_netdev_ops;
+ __NS8390_init(dev, 0);
+
+ ei_local->msg_enable = zorro8390_msg_enable;
+
+ err = register_netdev(dev);
+ if (err) {
+ free_irq(IRQ_AMIGA_PORTS, dev);
+ return err;
+ }
+
+ netdev_info(dev, "%s at 0x%08lx, Ethernet Address %pM\n",
+ name, board, dev->dev_addr);
+
+ return 0;
+}
+
+static int zorro8390_init_one(struct zorro_dev *z,
+ const struct zorro_device_id *ent)
+{
+ struct net_device *dev;
+ unsigned long board, ioaddr;
+ int err, i;
+
+ for (i = ARRAY_SIZE(cards) - 1; i >= 0; i--)
+ if (z->id == cards[i].id)
+ break;
+ if (i < 0)
+ return -ENODEV;
+
+ board = z->resource.start;
+ ioaddr = board + cards[i].offset;
+ dev = ____alloc_ei_netdev(0);
+ if (!dev)
+ return -ENOMEM;
+ if (!request_mem_region(ioaddr, NE_IO_EXTENT * 2, DRV_NAME)) {
+ free_netdev(dev);
+ return -EBUSY;
+ }
+ err = zorro8390_init(dev, board, cards[i].name, ZTWO_VADDR(ioaddr));
+ if (err) {
+ release_mem_region(ioaddr, NE_IO_EXTENT * 2);
+ free_netdev(dev);
+ return err;
+ }
+ zorro_set_drvdata(z, dev);
+ return 0;
+}
+
+static struct zorro_driver zorro8390_driver = {
+ .name = "zorro8390",
+ .id_table = zorro8390_zorro_tbl,
+ .probe = zorro8390_init_one,
+ .remove = zorro8390_remove_one,
+};
+
+static int __init zorro8390_init_module(void)
+{
+ return zorro_register_driver(&zorro8390_driver);
+}
+
+static void __exit zorro8390_cleanup_module(void)
+{
+ zorro_unregister_driver(&zorro8390_driver);
+}
+
+module_init(zorro8390_init_module);
+module_exit(zorro8390_cleanup_module);
+
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff