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path: root/drivers/net/zorro8390.c
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Diffstat (limited to 'drivers/net/zorro8390.c')
-rw-r--r--drivers/net/zorro8390.c439
1 files changed, 439 insertions, 0 deletions
diff --git a/drivers/net/zorro8390.c b/drivers/net/zorro8390.c
new file mode 100644
index 000000000000..8ab6e12153ba
--- /dev/null
+++ b/drivers/net/zorro8390.c
@@ -0,0 +1,439 @@
+/*
+ * 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.
+ */
+
+#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 <asm/system.h>
+#include <asm/irq.h>
+#include <asm/amigaints.h>
+#include <asm/amigahw.h>
+
+#include "8390.h"
+
+
+#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[] __devinitdata = {
+ { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, "Ariadne II", 0x0600 },
+ { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, "X-Surf", 0x8600 },
+};
+
+static int __devinit zorro8390_init_one(struct zorro_dev *z,
+ const struct zorro_device_id *ent);
+static int __devinit zorro8390_init(struct net_device *dev,
+ unsigned long board, const char *name,
+ unsigned long ioaddr);
+static int zorro8390_open(struct net_device *dev);
+static int zorro8390_close(struct net_device *dev);
+static void zorro8390_reset_8390(struct net_device *dev);
+static void zorro8390_get_8390_hdr(struct net_device *dev,
+ struct e8390_pkt_hdr *hdr, int ring_page);
+static void zorro8390_block_input(struct net_device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void zorro8390_block_output(struct net_device *dev, const int count,
+ const unsigned char *buf,
+ const int start_page);
+static void __devexit zorro8390_remove_one(struct zorro_dev *z);
+
+static struct zorro_device_id zorro8390_zorro_tbl[] __devinitdata = {
+ { ZORRO_PROD_VILLAGE_TRONIC_ARIADNE2, },
+ { ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF, },
+ { 0 }
+};
+
+static struct zorro_driver zorro8390_driver = {
+ .name = "zorro8390",
+ .id_table = zorro8390_zorro_tbl,
+ .probe = zorro8390_init_one,
+ .remove = __devexit_p(zorro8390_remove_one),
+};
+
+static int __devinit 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;
+ board = z->resource.start;
+ ioaddr = board+cards[i].offset;
+ dev = alloc_ei_netdev();
+ if (!dev)
+ return -ENOMEM;
+ SET_MODULE_OWNER(dev);
+ if (!request_mem_region(ioaddr, NE_IO_EXTENT*2, DRV_NAME)) {
+ free_netdev(dev);
+ return -EBUSY;
+ }
+ if ((err = zorro8390_init(dev, board, cards[i].name,
+ ZTWO_VADDR(ioaddr)))) {
+ release_mem_region(ioaddr, NE_IO_EXTENT*2);
+ free_netdev(dev);
+ return err;
+ }
+ zorro_set_drvdata(z, dev);
+ return 0;
+}
+
+static int __devinit zorro8390_init(struct net_device *dev,
+ unsigned long board, const char *name,
+ unsigned long ioaddr)
+{
+ int i;
+ int err;
+ unsigned char SA_prom[32];
+ int start_page, stop_page;
+ 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 (jiffies - reset_start_time > 2*HZ/100) {
+ printk(KERN_WARNING " 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!). */
+ {
+ struct {
+ u32 value;
+ u32 offset;
+ } program_seq[] = {
+ {E8390_NODMA+E8390_PAGE0+E8390_STOP, NE_CMD}, /* Select page 0*/
+ {0x48, NE_EN0_DCFG}, /* Set byte-wide (0x48) 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 < sizeof(program_seq)/sizeof(program_seq[0]); 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 = ioaddr;
+ dev->irq = IRQ_AMIGA_PORTS;
+
+ /* Install the Interrupt handler */
+ i = request_irq(IRQ_AMIGA_PORTS, ei_interrupt, SA_SHIRQ, DRV_NAME, dev);
+ if (i) return i;
+
+ for(i = 0; i < ETHER_ADDR_LEN; i++) {
+#ifdef DEBUG
+ printk(" %2.2x", SA_prom[i]);
+#endif
+ dev->dev_addr[i] = SA_prom[i];
+ }
+
+ 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->open = &zorro8390_open;
+ dev->stop = &zorro8390_close;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = ei_poll;
+#endif
+
+ NS8390_init(dev, 0);
+ err = register_netdev(dev);
+ if (err) {
+ free_irq(IRQ_AMIGA_PORTS, dev);
+ return err;
+ }
+
+ printk(KERN_INFO "%s: %s at 0x%08lx, Ethernet Address "
+ "%02x:%02x:%02x:%02x:%02x:%02x\n", dev->name, name, board,
+ dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
+ dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
+
+ return 0;
+}
+
+static int zorro8390_open(struct net_device *dev)
+{
+ ei_open(dev);
+ return 0;
+}
+
+static int zorro8390_close(struct net_device *dev)
+{
+ if (ei_debug > 1)
+ printk(KERN_DEBUG "%s: Shutting down ethercard.\n", dev->name);
+ ei_close(dev);
+ return 0;
+}
+
+/* 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;
+
+ if (ei_debug > 1)
+ printk(KERN_DEBUG "resetting the 8390 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 (jiffies - reset_start_time > 2*HZ/100) {
+ printk(KERN_WARNING "%s: ne_reset_8390() did not complete.\n",
+ dev->name);
+ 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) {
+ printk(KERN_ERR "%s: DMAing conflict in ne_get_8390_hdr "
+ "[DMAstat:%d][irqlock:%d].\n", dev->name, 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) {
+ printk(KERN_ERR "%s: DMAing conflict in ne_block_input "
+ "[DMAstat:%d][irqlock:%d].\n",
+ dev->name, 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) {
+ printk(KERN_ERR "%s: DMAing conflict in ne_block_output."
+ "[DMAstat:%d][irqlock:%d]\n", dev->name, 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 (jiffies - dma_start > 2*HZ/100) { /* 20ms */
+ printk(KERN_ERR "%s: timeout waiting for Tx RDC.\n",
+ dev->name);
+ zorro8390_reset_8390(dev);
+ NS8390_init(dev,1);
+ break;
+ }
+
+ z_writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+ return;
+}
+
+static void __devexit 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 int __init zorro8390_init_module(void)
+{
+ return zorro_module_init(&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");
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-16 22:50:38 +0300