patch-2.1.113 linux/drivers/net/apne.c
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- Lines: 635
- Date:
Thu Jul 30 11:17:12 1998
- Orig file:
v2.1.112/linux/drivers/net/apne.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -u --recursive --new-file v2.1.112/linux/drivers/net/apne.c linux/drivers/net/apne.c
@@ -0,0 +1,634 @@
+/*
+ * Amiga Linux/68k 8390 based PCMCIA Ethernet Driver for the Amiga 1200
+ *
+ * (C) Copyright 1997 Alain Malek
+ * (Alain.Malek@cryogen.com)
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This program is based on
+ *
+ * ne.c: A general non-shared-memory NS8390 ethernet driver for linux
+ * Written 1992-94 by Donald Becker.
+ *
+ * 8390.c: A general NS8390 ethernet driver core for linux.
+ * Written 1992-94 by Donald Becker.
+ *
+ * cnetdevice: A Sana-II ethernet driver for AmigaOS
+ * Written by Bruce Abbott (bhabbott@inhb.co.nz)
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * 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.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <asm/setup.h>
+#include <asm/amigaints.h>
+#include <asm/amigahw.h>
+#include <asm/amigayle.h>
+#include <asm/amipcmcia.h>
+
+#include "8390.h"
+
+/* ---- No user-serviceable parts below ---- */
+
+#define NE_BASE (dev->base_addr)
+#define NE_CMD 0x00
+#define NE_DATAPORT 0x10 /* NatSemi-defined port window offset. */
+#define NE_RESET 0x1f+GAYLE_ODD /* Issue a read to reset, a write to clear. */
+#define NE_IO_EXTENT 0x20
+
+#define NE_EN0_ISR 0x07+GAYLE_ODD
+#define NE_EN0_DCFG 0x0e
+
+#define NE_EN0_RSARLO 0x08
+#define NE_EN0_RSARHI 0x09+GAYLE_ODD
+#define NE_EN0_RCNTLO 0x0a
+#define NE_EN0_RXCR 0x0c
+#define NE_EN0_TXCR 0x0d+GAYLE_ODD
+#define NE_EN0_RCNTHI 0x0b+GAYLE_ODD
+#define NE_EN0_IMR 0x0f+GAYLE_ODD
+
+#define NE1SM_START_PG 0x20 /* First page of TX buffer */
+#define NE1SM_STOP_PG 0x40 /* Last page +1 of RX ring */
+#define NESM_START_PG 0x40 /* First page of TX buffer */
+#define NESM_STOP_PG 0x80 /* Last page +1 of RX ring */
+
+
+int apne_probe(struct device *dev);
+static int apne_probe1(struct device *dev, int ioaddr);
+
+static int apne_open(struct device *dev);
+static int apne_close(struct device *dev);
+
+static void apne_reset_8390(struct device *dev);
+static void apne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
+ int ring_page);
+static void apne_block_input(struct device *dev, int count,
+ struct sk_buff *skb, int ring_offset);
+static void apne_block_output(struct device *dev, const int count,
+ const unsigned char *buf, const int start_page);
+static void apne_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+
+static int init_pcmcia(void);
+
+/* IO base address used for nic */
+
+#define IOBASE 0x300
+
+/*
+ use MANUAL_CONFIG and MANUAL_OFFSET for enabling IO by hand
+ you can find the values to use by looking at the cnet.device
+ config file example (the default values are for the CNET40BC card)
+*/
+
+/*
+#define MANUAL_CONFIG 0x20
+#define MANUAL_OFFSET 0x3f8
+
+#define MANUAL_HWADDR0 0x00
+#define MANUAL_HWADDR1 0x12
+#define MANUAL_HWADDR2 0x34
+#define MANUAL_HWADDR3 0x56
+#define MANUAL_HWADDR4 0x78
+#define MANUAL_HWADDR5 0x9a
+*/
+
+#define WORDSWAP(a) ( (((a)>>8)&0xff) | ((a)<<8) )
+
+
+static const char *version =
+ "apne.c:v1.1 7/10/98 Alain Malek (Alain.Malek@cryogen.ch)\n";
+
+
+__initfunc(int apne_probe(struct device *dev))
+{
+#ifndef MANUAL_CONFIG
+ char tuple[8];
+#endif
+
+ if ( !(AMIGAHW_PRESENT(PCMCIA)) )
+ return (ENODEV);
+
+ printk("Looking for PCMCIA ethernet card : ");
+
+ /* check if a card is inserted */
+ if (!(PCMCIA_INSERTED)) {
+ printk("NO PCMCIA card inserted\n");
+ return (ENODEV);
+ }
+
+ /* disable pcmcia irq for readtuple */
+ pcmcia_disable_irq();
+
+#ifndef MANUAL_CONFIG
+ if ((pcmcia_copy_tuple(CISTPL_FUNCID, tuple, 8) < 3) ||
+ (tuple[2] != CISTPL_FUNCID_NETWORK)) {
+ printk("not an ethernet card\n");
+ return (ENODEV);
+ }
+#endif
+
+ printk("ethernet PCMCIA card inserted\n");
+
+ if (init_pcmcia())
+ return apne_probe1(dev, IOBASE+GAYLE_IO);
+ else
+ return (ENODEV);
+
+}
+
+
+__initfunc(static int apne_probe1(struct device *dev, int ioaddr))
+{
+ int i;
+ unsigned char SA_prom[32];
+ int wordlength = 2;
+ const char *name = NULL;
+ int start_page, stop_page;
+#ifndef MANUAL_HWADDR0
+ int neX000, ctron;
+#endif
+ static unsigned version_printed = 0;
+ static int pcmcia_offsets[16]={
+ 0, 1+GAYLE_ODD, 2, 3+GAYLE_ODD,
+ 4, 5+GAYLE_ODD, 6, 7+GAYLE_ODD,
+ 8, 9+GAYLE_ODD, 0xa, 0xb+GAYLE_ODD,
+ 0xc, 0xd+GAYLE_ODD, 0xe, 0xf+GAYLE_ODD };
+
+ if (load_8390_module("apne.c"))
+ return -ENOSYS;
+
+ /* We should have a "dev" from Space.c or the static module table. */
+ if (dev == NULL) {
+ printk(KERN_ERR "apne.c: Passed a NULL device.\n");
+ dev = init_etherdev(0, 0);
+ }
+
+ if (ei_debug && version_printed++ == 0)
+ printk(version);
+
+ printk("PCMCIA NE*000 ethercard probe");
+
+ /* Reset card. Who knows what dain-bramaged state it was left in. */
+ { unsigned long reset_start_time = jiffies;
+
+ writeb(readb(ioaddr + NE_RESET), ioaddr + NE_RESET);
+
+ while ((readb(ioaddr + NE_EN0_ISR) & ENISR_RESET) == 0)
+ if (jiffies - reset_start_time > 2*HZ/100) {
+ printk(" not found (no reset ack).\n");
+ return ENODEV;
+ }
+
+ writeb(0xff, ioaddr + NE_EN0_ISR); /* Ack all intr. */
+ }
+
+#ifndef MANUAL_HWADDR0
+
+ /* 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 {unsigned long value, 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++) {
+ writeb(program_seq[i].value, ioaddr + program_seq[i].offset);
+ }
+
+ }
+ for(i = 0; i < 32 /*sizeof(SA_prom)*/; i+=2) {
+ SA_prom[i] = readb(ioaddr + NE_DATAPORT);
+ SA_prom[i+1] = readb(ioaddr + NE_DATAPORT);
+ if (SA_prom[i] != SA_prom[i+1])
+ wordlength = 1;
+ }
+
+ /* At this point, wordlength *only* tells us if the SA_prom is doubled
+ up or not because some broken PCI cards don't respect the byte-wide
+ request in program_seq above, and hence don't have doubled up values.
+ These broken cards would otherwise be detected as an ne1000. */
+
+ if (wordlength == 2)
+ for (i = 0; i < 16; i++)
+ SA_prom[i] = SA_prom[i+i];
+
+ if (wordlength == 2) {
+ /* We must set the 8390 for word mode. */
+ writeb(0x49, ioaddr + NE_EN0_DCFG);
+ start_page = NESM_START_PG;
+ stop_page = NESM_STOP_PG;
+ } else {
+ start_page = NE1SM_START_PG;
+ stop_page = NE1SM_STOP_PG;
+ }
+
+ neX000 = (SA_prom[14] == 0x57 && SA_prom[15] == 0x57);
+ ctron = (SA_prom[0] == 0x00 && SA_prom[1] == 0x00 && SA_prom[2] == 0x1d);
+
+ /* Set up the rest of the parameters. */
+ if (neX000) {
+ name = (wordlength == 2) ? "NE2000" : "NE1000";
+ } else if (ctron) {
+ name = (wordlength == 2) ? "Ctron-8" : "Ctron-16";
+ start_page = 0x01;
+ stop_page = (wordlength == 2) ? 0x40 : 0x20;
+ } else {
+ printk(" not found.\n");
+ return ENXIO;
+
+ }
+
+#else
+ wordlength = 2;
+ /* We must set the 8390 for word mode. */
+ writeb(0x49, ioaddr + NE_EN0_DCFG);
+ start_page = NESM_START_PG;
+ stop_page = NESM_STOP_PG;
+
+ SA_prom[0] = MANUAL_HWADDR0;
+ SA_prom[1] = MANUAL_HWADDR1;
+ SA_prom[2] = MANUAL_HWADDR2;
+ SA_prom[3] = MANUAL_HWADDR3;
+ SA_prom[4] = MANUAL_HWADDR4;
+ SA_prom[5] = MANUAL_HWADDR5;
+ name = "NE2000";
+#endif
+
+ dev->base_addr = ioaddr;
+
+ /* Install the Interrupt handler */
+ if (request_irq(IRQ_AMIGA_PORTS, apne_interrupt, 0, "apne Ethernet", dev))
+ return -EAGAIN;
+
+
+ /* Allocate dev->priv and fill in 8390 specific dev fields. */
+ if (ethdev_init(dev)) {
+ printk (" unable to get memory for dev->priv.\n");
+ return -ENOMEM;
+ }
+
+ for(i = 0; i < ETHER_ADDR_LEN; i++) {
+ printk(" %2.2x", SA_prom[i]);
+ dev->dev_addr[i] = SA_prom[i];
+ }
+
+ printk("\n%s: %s found.\n",
+ dev->name, name);
+
+ ei_status.name = name;
+ ei_status.tx_start_page = start_page;
+ ei_status.stop_page = stop_page;
+ ei_status.word16 = (wordlength == 2);
+
+ ei_status.rx_start_page = start_page + TX_PAGES;
+
+ ei_status.reset_8390 = &apne_reset_8390;
+ ei_status.block_input = &apne_block_input;
+ ei_status.block_output = &apne_block_output;
+ ei_status.get_8390_hdr = &apne_get_8390_hdr;
+ ei_status.reg_offset = pcmcia_offsets;
+ dev->open = &apne_open;
+ dev->stop = &apne_close;
+ NS8390_init(dev, 0);
+
+ pcmcia_ack_int(pcmcia_get_intreq()); /* ack PCMCIA int req */
+ pcmcia_enable_irq();
+
+ return 0;
+}
+
+static int
+apne_open(struct device *dev)
+{
+ ei_open(dev);
+ MOD_INC_USE_COUNT;
+ return 0;
+}
+
+static int
+apne_close(struct device *dev)
+{
+ if (ei_debug > 1)
+ printk("%s: Shutting down ethercard.\n", dev->name);
+ ei_close(dev);
+ MOD_DEC_USE_COUNT;
+ 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
+apne_reset_8390(struct device *dev)
+{
+ unsigned long reset_start_time = jiffies;
+
+ init_pcmcia();
+
+ if (ei_debug > 1) printk("resetting the 8390 t=%ld...", jiffies);
+
+ writeb(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 ((readb(NE_BASE+NE_EN0_ISR) & ENISR_RESET) == 0)
+ if (jiffies - reset_start_time > 2*HZ/100) {
+ printk("%s: ne_reset_8390() did not complete.\n", dev->name);
+ break;
+ }
+ 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
+apne_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+
+ int nic_base = dev->base_addr;
+ int cnt;
+ char *ptrc;
+ short *ptrs;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+ if (ei_status.dmaing) {
+ printk("%s: DMAing conflict in ne_get_8390_hdr "
+ "[DMAstat:%d][irqlock:%d][intr:%d].\n",
+ dev->name, ei_status.dmaing, ei_status.irqlock,
+ dev->interrupt);
+ return;
+ }
+
+ ei_status.dmaing |= 0x01;
+ writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
+ writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+ writeb(sizeof(struct e8390_pkt_hdr), nic_base + NE_EN0_RCNTLO);
+ writeb(0, nic_base + NE_EN0_RCNTHI);
+ writeb(0, nic_base + NE_EN0_RSARLO); /* On page boundary */
+ writeb(ring_page, nic_base + NE_EN0_RSARHI);
+ writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+
+ if (ei_status.word16) {
+ ptrs = (short*)hdr;
+ for(cnt = 0; cnt < (sizeof(struct e8390_pkt_hdr)>>1); cnt++)
+ *ptrs++ = readw(NE_BASE + NE_DATAPORT);
+ } else {
+ ptrc = (char*)hdr;
+ for(cnt = 0; cnt < sizeof(struct e8390_pkt_hdr); cnt++)
+ *ptrc++ = readb(NE_BASE + NE_DATAPORT);
+ }
+
+ 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 writeb. */
+
+static void
+apne_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset)
+{
+ int nic_base = dev->base_addr;
+ char *buf = skb->data;
+ char *ptrc;
+ short *ptrs;
+ int cnt;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+ if (ei_status.dmaing) {
+ printk("%s: DMAing conflict in ne_block_input "
+ "[DMAstat:%d][irqlock:%d][intr:%d].\n",
+ dev->name, ei_status.dmaing, ei_status.irqlock,
+ dev->interrupt);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ writeb(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base+ NE_CMD);
+ writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+ writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
+ writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
+ writeb(ring_offset & 0xff, nic_base + NE_EN0_RSARLO);
+ writeb(ring_offset >> 8, nic_base + NE_EN0_RSARHI);
+ writeb(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+ if (ei_status.word16) {
+ ptrs = (short*)buf;
+ for (cnt = 0; cnt < (count>>1); cnt++)
+ *ptrs++ = readw(NE_BASE + NE_DATAPORT);
+ if (count & 0x01) {
+ buf[count-1] = readb(NE_BASE + NE_DATAPORT);
+ }
+ } else {
+ ptrc = (char*)buf;
+ for (cnt = 0; cnt < count; cnt++)
+ *ptrc++ = readb(NE_BASE + NE_DATAPORT);
+ }
+
+ writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+}
+
+static void
+apne_block_output(struct device *dev, int count,
+ const unsigned char *buf, const int start_page)
+{
+ int nic_base = NE_BASE;
+ unsigned long dma_start;
+ char *ptrc;
+ 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 (ei_status.word16 && (count & 0x01))
+ count++;
+
+ /* This *shouldn't* happen. If it does, it's the last thing you'll see */
+ if (ei_status.dmaing) {
+ printk("%s: DMAing conflict in ne_block_output."
+ "[DMAstat:%d][irqlock:%d][intr:%d]\n",
+ dev->name, ei_status.dmaing, ei_status.irqlock,
+ dev->interrupt);
+ return;
+ }
+ ei_status.dmaing |= 0x01;
+ /* We should already be in page 0, but to be safe... */
+ writeb(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base + NE_CMD);
+
+ writeb(ENISR_RDC, nic_base + NE_EN0_ISR);
+
+ /* Now the normal output. */
+ writeb(count & 0xff, nic_base + NE_EN0_RCNTLO);
+ writeb(count >> 8, nic_base + NE_EN0_RCNTHI);
+ writeb(0x00, nic_base + NE_EN0_RSARLO);
+ writeb(start_page, nic_base + NE_EN0_RSARHI);
+
+ writeb(E8390_RWRITE+E8390_START, nic_base + NE_CMD);
+ if (ei_status.word16) {
+ ptrs = (short*)buf;
+ for (cnt = 0; cnt < count>>1; cnt++)
+ writew(*ptrs++, NE_BASE+NE_DATAPORT);
+ } else {
+ ptrc = (char*)buf;
+ for (cnt = 0; cnt < count; cnt++)
+ writeb(*ptrc++, NE_BASE + NE_DATAPORT);
+ }
+
+ dma_start = jiffies;
+
+ while ((readb(NE_BASE + NE_EN0_ISR) & ENISR_RDC) == 0)
+ if (jiffies - dma_start > 2*HZ/100) { /* 20ms */
+ printk("%s: timeout waiting for Tx RDC.\n", dev->name);
+ apne_reset_8390(dev);
+ NS8390_init(dev,1);
+ break;
+ }
+
+ writeb(ENISR_RDC, nic_base + NE_EN0_ISR); /* Ack intr. */
+ ei_status.dmaing &= ~0x01;
+ return;
+}
+
+static void apne_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned char pcmcia_intreq;
+
+ if (!(gayle.inten & GAYLE_IRQ_IRQ))
+ return;
+
+ pcmcia_intreq = pcmcia_get_intreq();
+
+ if (!(pcmcia_intreq & GAYLE_IRQ_IRQ)) {
+ pcmcia_ack_int(pcmcia_intreq);
+ return;
+ }
+ if (ei_debug > 3)
+ printk("pcmcia intreq = %x\n", pcmcia_intreq);
+ pcmcia_disable_irq(); /* to get rid of the sti() within ei_interrupt */
+ ei_interrupt(irq, dev_id, regs);
+ pcmcia_ack_int(pcmcia_get_intreq());
+ pcmcia_enable_irq();
+}
+
+#ifdef MODULE
+static char devicename[9] = {0, };
+
+static struct device apne_dev =
+{
+ devicename,
+ 0, 0, 0, 0,
+ 0, 0,
+ 0, 0, 0, NULL, apne_probe,
+};
+
+int init_module(void)
+{
+ int err;
+ if ((err = register_netdev(&apne_dev))) {
+ if (err == -EIO)
+ printk("No PCMCIA NEx000 ethernet card found.\n");
+ return (err);
+ }
+ lock_8390_module();
+ return (0);
+}
+
+void cleanup_module(void)
+{
+ unregister_netdev(&apne_dev);
+
+ pcmcia_disable_irq();
+
+ free_irq(IRQ_AMIGA_PORTS, &apne_dev);
+
+ pcmcia_reset();
+
+ unlock_8390_module();
+}
+
+#endif
+
+static int init_pcmcia(void)
+{
+ u_char config;
+#ifndef MANUAL_CONFIG
+ u_char tuple[32];
+ int offset_len;
+#endif
+ u_long offset;
+
+ pcmcia_reset();
+ pcmcia_program_voltage(PCMCIA_0V);
+ pcmcia_access_speed(PCMCIA_SPEED_250NS);
+ pcmcia_write_enable();
+
+#ifdef MANUAL_CONFIG
+ config = MANUAL_CONFIG;
+#else
+ /* get and write config byte to enable IO port */
+
+ if (pcmcia_copy_tuple(CISTPL_CFTABLE_ENTRY, tuple, 32) < 3)
+ return 0;
+
+ config = tuple[2] & 0x3f;
+#endif
+#ifdef MANUAL_OFFSET
+ offset = MANUAL_OFFSET;
+#else
+ if (pcmcia_copy_tuple(CISTPL_CONFIG, tuple, 32) < 6)
+ return 0;
+
+ offset_len = (tuple[2] & 0x3) + 1;
+ offset = 0;
+ while(offset_len--) {
+ offset = (offset << 8) | tuple[4+offset_len];
+ }
+#endif
+
+ writeb(config, GAYLE_ATTRIBUTE+offset);
+
+ return 1;
+}
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