1998-11-30 OKUJI Yoshinori <okuji@kuicr.kyoto-u.ac.jp>

	Clean up linux emulation code to make it architecture-independent
	as much as possible.

	* linux: Renamed from linuxdev.
	* Makefile.in (objfiles): Add linux.o instead of linuxdev.o.
	(MAKE): New variable. Used for the linux.o target.
	* configure.in: Add AC_CHECK_TOOL(MAKE, make).
	* i386/i386/spl.h: Include <i386/ipl.h>, for compatibility with
	OSF Mach 3.0. Suggested by Elgin Lee <ehl@funghi.com>.
	* linux/src: Renamed from linux/linux.
	* linux/dev: Renamed from linux/mach.
	* linux/Drivers.in (AC_INIT): Use dev/include/linux/autoconf.h,
	instead of mach/include/linux/autoconf.h.
	* Makefile.in (all): Target ../linux.o instead of ../linuxdev.o.
	* linux/dev/drivers/block/genhd.c: Include <machine/spl.h> instead
	of <i386/ipl.h>.
	* linux/dev/drivers/net/auto_irq.c: Remove unneeded header files,
	<i386/ipl.h> and <i386/pic.h>.
	* linux/dev/init/main.c: Many i386-dependent codes moved to ...
	* linux/dev/arch/i386/irq.c: ... here.
	* linux/dev/arch/i386/setup.c: New file.
	* linux/dev/arch/i386/linux_emul.h: Likewise.
	* linux/dev/arch/i386/glue/timer.c: Merged into sched.c.
	* linux/dev/arch/i386/glue/sched.c: Include <machine/spl.h> instead
	of <i386/ipl.h>, and moved to ...
	* linux/dev/kernel/sched.c: ... here.
	* linux/dev/arch/i386/glue/block.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/blocl.c: ... here.
	* linux/dev/arch/i386/glue/net.c: Include <machine/spl.h> and
	<linux_emul.h>, instead of i386-dependent header files, and
	moved to ...
	* linux/dev/glue/net.c: ... here.
	* linux/dev/arch/i386/glue/misc.c: Remove `x86' and moved to ...
	* linux/dev/glue/misc.c: ... here.
	* linux/dev/arch/i386/glue/kmem.c: Moved to ...
	* linux/dev/glue/kmem.c: ... here.

1 files changed, 451 insertions, 0 deletions

diff --git a/linux/src/drivers/net/hp.c b/linux/src/drivers/net/hp.c
new file mode 100644
index 0000000..741924f
--- /dev/null
+++ b/linux/src/drivers/net/hp.c
@@ -0,0 +1,451 @@
+/* hp.c: A HP LAN ethernet driver for linux. */
+/*
+	Written 1993-94 by Donald Becker.
+
+	Copyright 1993 United States Government as represented by the
+	Director, National Security Agency.
+
+	This software may be used and distributed according to the terms
+	of the GNU Public License, incorporated herein by reference.
+
+	The author may be reached as becker@CESDIS.gsfc.nasa.gov, or C/O
+	Center of Excellence in Space Data and Information Sciences
+	   Code 930.5, Goddard Space Flight Center, Greenbelt MD 20771
+
+	This is a driver for the HP PC-LAN adaptors.
+
+	Sources:
+	  The Crynwr packet driver.
+*/
+
+static const char *version =
+	"hp.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
+
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include "8390.h"
+
+/* A zero-terminated list of I/O addresses to be probed. */
+static unsigned int hppclan_portlist[] =
+{ 0x300, 0x320, 0x340, 0x280, 0x2C0, 0x200, 0x240, 0};
+
+#define HP_IO_EXTENT	32
+
+#define HP_DATAPORT		0x0c	/* "Remote DMA" data port. */
+#define HP_ID			0x07
+#define HP_CONFIGURE	0x08	/* Configuration register. */
+#define	 HP_RUN			0x01	/* 1 == Run, 0 == reset. */
+#define	 HP_IRQ			0x0E	/* Mask for software-configured IRQ line. */
+#define	 HP_DATAON		0x10	/* Turn on dataport */
+#define NIC_OFFSET		0x10	/* Offset the 8390 registers. */
+
+#define HP_START_PG		0x00	/* First page of TX buffer */
+#define HP_8BSTOP_PG	0x80	/* Last page +1 of RX ring */
+#define HP_16BSTOP_PG	0xFF	/* Same, for 16 bit cards. */
+
+int hp_probe(struct device *dev);
+int hp_probe1(struct device *dev, int ioaddr);
+
+static int hp_open(struct device *dev);
+static int hp_close(struct device *dev);
+static void hp_reset_8390(struct device *dev);
+static void hp_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr,
+					int ring_page);
+static void hp_block_input(struct device *dev, int count,
+					struct sk_buff *skb , int ring_offset);
+static void hp_block_output(struct device *dev, int count,
+							const unsigned char *buf, const int start_page);
+
+static void hp_init_card(struct device *dev);
+
+/* The map from IRQ number to HP_CONFIGURE register setting. */
+/* My default is IRQ5	   0  1	 2  3  4  5  6	7  8  9 10 11 */
+static char irqmap[16] = { 0, 0, 4, 6, 8,10, 0,14, 0, 4, 2,12,0,0,0,0};
+
+
+/*	Probe for an HP LAN adaptor.
+	Also initialize the card and fill in STATION_ADDR with the station
+	address. */
+#ifdef HAVE_DEVLIST
+struct netdev_entry netcard_drv =
+{"hp", hp_probe1, HP_IO_EXTENT, hppclan_portlist};
+#else
+
+int hp_probe(struct device *dev)
+{
+	int i;
+	int base_addr = dev ? dev->base_addr : 0;
+
+	if (base_addr > 0x1ff)		/* Check a single specified location. */
+		return hp_probe1(dev, base_addr);
+	else if (base_addr != 0)	/* Don't probe at all. */
+		return ENXIO;
+
+	for (i = 0; hppclan_portlist[i]; i++) {
+		int ioaddr = hppclan_portlist[i];
+		if (check_region(ioaddr, HP_IO_EXTENT))
+			continue;
+		if (hp_probe1(dev, ioaddr) == 0)
+			return 0;
+	}
+
+	return ENODEV;
+}
+#endif
+
+int hp_probe1(struct device *dev, int ioaddr)
+{
+	int i, board_id, wordmode;
+	const char *name;
+	static unsigned version_printed = 0;
+
+	/* Check for the HP physical address, 08 00 09 xx xx xx. */
+	/* This really isn't good enough: we may pick up HP LANCE boards
+	   also!  Avoid the lance 0x5757 signature. */
+	if (inb(ioaddr) != 0x08
+		|| inb(ioaddr+1) != 0x00
+		|| inb(ioaddr+2) != 0x09
+		|| inb(ioaddr+14) == 0x57)
+		return ENODEV;
+
+	/* Set up the parameters based on the board ID.
+	   If you have additional mappings, please mail them to me -djb. */
+	if ((board_id = inb(ioaddr + HP_ID)) & 0x80) {
+		name = "HP27247";
+		wordmode = 1;
+	} else {
+		name = "HP27250";
+		wordmode = 0;
+	}
+
+	/* We should have a "dev" from Space.c or the static module table. */
+	if (dev == NULL) {
+		printk("hp.c: Passed a NULL device.\n");
+		dev = init_etherdev(0, 0);
+	}
+
+	if (ei_debug  &&  version_printed++ == 0)
+		printk(version);
+ 
+	printk("%s: %s (ID %02x) at %#3x,", dev->name, name, board_id, ioaddr);
+
+	for(i = 0; i < ETHER_ADDR_LEN; i++)
+		printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));
+
+	/* Snarf the interrupt now.  Someday this could be moved to open(). */
+	if (dev->irq < 2) {
+		int irq_16list[] = { 11, 10, 5, 3, 4, 7, 9, 0};
+		int irq_8list[] = { 7, 5, 3, 4, 9, 0};
+		int *irqp = wordmode ? irq_16list : irq_8list;
+		do {
+			int irq = *irqp;
+			if (request_irq (irq, NULL, 0, "bogus", NULL) != -EBUSY) {
+				autoirq_setup(0);
+				/* Twinkle the interrupt, and check if it's seen. */
+				outb_p(irqmap[irq] | HP_RUN, ioaddr + HP_CONFIGURE);
+				outb_p( 0x00 | HP_RUN, ioaddr + HP_CONFIGURE);
+				if (irq == autoirq_report(0)		 /* It's a good IRQ line! */
+					&& request_irq (irq, &ei_interrupt, 0, "hp", NULL) == 0) {
+					printk(" selecting IRQ %d.\n", irq);
+					dev->irq = *irqp;
+					break;
+				}
+			}
+		} while (*++irqp);
+		if (*irqp == 0) {
+			printk(" no free IRQ lines.\n");
+			return EBUSY;
+		}
+	} else {
+		if (dev->irq == 2)
+			dev->irq = 9;
+		if (request_irq(dev->irq, ei_interrupt, 0, "hp", NULL)) {
+			printk (" unable to get IRQ %d.\n", dev->irq);
+			return EBUSY;
+		}
+	}
+
+	/* Allocate dev->priv and fill in 8390 specific dev fields. */
+	if (ethdev_init(dev)) {
+		printk (" unable to get memory for dev->priv.\n");
+		free_irq(dev->irq, NULL);
+		return -ENOMEM;
+	}
+
+	/* Grab the region so we can find another board if something fails. */
+	request_region(ioaddr, HP_IO_EXTENT,"hp");
+
+	/* Set the base address to point to the NIC, not the "real" base! */
+	dev->base_addr = ioaddr + NIC_OFFSET;
+	dev->open = &hp_open;
+	dev->stop = &hp_close;
+
+	ei_status.name = name;
+	ei_status.word16 = wordmode;
+	ei_status.tx_start_page = HP_START_PG;
+	ei_status.rx_start_page = HP_START_PG + TX_PAGES;
+	ei_status.stop_page = wordmode ? HP_16BSTOP_PG : HP_8BSTOP_PG;
+
+	ei_status.reset_8390 = &hp_reset_8390;
+	ei_status.get_8390_hdr = &hp_get_8390_hdr;
+	ei_status.block_input = &hp_block_input;
+	ei_status.block_output = &hp_block_output;
+	hp_init_card(dev);
+
+	return 0;
+}
+
+static int
+hp_open(struct device *dev)
+{
+	ei_open(dev);
+	MOD_INC_USE_COUNT;
+	return 0;
+}
+
+static int
+hp_close(struct device *dev)
+{
+	ei_close(dev);
+	MOD_DEC_USE_COUNT;
+	return 0;
+}
+
+static void
+hp_reset_8390(struct device *dev)
+{
+	int hp_base = dev->base_addr - NIC_OFFSET;
+	int saved_config = inb_p(hp_base + HP_CONFIGURE);
+
+	if (ei_debug > 1) printk("resetting the 8390 time=%ld...", jiffies);
+	outb_p(0x00, hp_base + HP_CONFIGURE);
+	ei_status.txing = 0;
+	/* Pause just a few cycles for the hardware reset to take place. */
+	SLOW_DOWN_IO;
+	SLOW_DOWN_IO;
+
+	outb_p(saved_config, hp_base + HP_CONFIGURE);
+	SLOW_DOWN_IO; SLOW_DOWN_IO;
+	
+	if ((inb_p(hp_base+NIC_OFFSET+EN0_ISR) & ENISR_RESET) == 0)
+		printk("%s: hp_reset_8390() did not complete.\n", dev->name);
+
+	if (ei_debug > 1) printk("8390 reset done (%ld).", jiffies);
+	return;
+}
+
+static void
+hp_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
+{
+	int nic_base = dev->base_addr;
+	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+
+	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
+	outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
+	outb_p(0, nic_base + EN0_RCNTHI);
+	outb_p(0, nic_base + EN0_RSARLO);	/* On page boundary */
+	outb_p(ring_page, nic_base + EN0_RSARHI);
+	outb_p(E8390_RREAD+E8390_START, nic_base);
+
+	if (ei_status.word16) 
+	  insw(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
+	else 
+	  insb(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
+
+	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+}
+	
+/* 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 HP LAN doesn't use shared memory -- we put the packet
+   out through the "remote DMA" dataport. */
+
+static void
+hp_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset)
+{
+	int nic_base = dev->base_addr;
+	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+	int xfer_count = count;
+	char *buf = skb->data;
+
+	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
+	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+	outb_p(count >> 8, nic_base + EN0_RCNTHI);
+	outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
+	outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
+	outb_p(E8390_RREAD+E8390_START, nic_base);
+	if (ei_status.word16) {
+	  insw(nic_base - NIC_OFFSET + HP_DATAPORT,buf,count>>1);
+	  if (count & 0x01)
+		buf[count-1] = inb(nic_base - NIC_OFFSET + HP_DATAPORT), xfer_count++;
+	} else {
+		insb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
+	}
+	/* This is for the ALPHA version only, remove for later releases. */
+	if (ei_debug > 0) {			/* DMA termination address check... */
+	  int high = inb_p(nic_base + EN0_RSARHI);
+	  int low = inb_p(nic_base + EN0_RSARLO);
+	  int addr = (high << 8) + low;
+	  /* Check only the lower 8 bits so we can ignore ring wrap. */
+	  if (((ring_offset + xfer_count) & 0xff) != (addr & 0xff))
+		printk("%s: RX transfer address mismatch, %#4.4x vs. %#4.4x (actual).\n",
+			   dev->name, ring_offset + xfer_count, addr);
+	}
+	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+}
+
+static void
+hp_block_output(struct device *dev, int count,
+				const unsigned char *buf, const int start_page)
+{
+	int nic_base = dev->base_addr;
+	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
+
+	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
+	/* 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++;
+	/* We should already be in page 0, but to be safe... */
+	outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base);
+
+#ifdef NE8390_RW_BUGFIX
+	/* Handle the read-before-write bug the same way as the
+	   Crynwr packet driver -- the NatSemi method doesn't work. */
+	outb_p(0x42, nic_base + EN0_RCNTLO);
+	outb_p(0,	nic_base + EN0_RCNTHI);
+	outb_p(0xff, nic_base + EN0_RSARLO);
+	outb_p(0x00, nic_base + EN0_RSARHI);
+#define NE_CMD	 	0x00
+	outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
+	/* Make certain that the dummy read has occurred. */
+	inb_p(0x61);
+	inb_p(0x61);
+#endif
+
+	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
+	outb_p(count >> 8,	 nic_base + EN0_RCNTHI);
+	outb_p(0x00, nic_base + EN0_RSARLO);
+	outb_p(start_page, nic_base + EN0_RSARHI);
+
+	outb_p(E8390_RWRITE+E8390_START, nic_base);
+	if (ei_status.word16) {
+		/* Use the 'rep' sequence for 16 bit boards. */
+		outsw(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count>>1);
+	} else {
+		outsb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
+	}
+
+	/* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here -- it's broken! */
+
+	/* This is for the ALPHA version only, remove for later releases. */
+	if (ei_debug > 0) {			/* DMA termination address check... */
+	  int high = inb_p(nic_base + EN0_RSARHI);
+	  int low  = inb_p(nic_base + EN0_RSARLO);
+	  int addr = (high << 8) + low;
+	  if ((start_page << 8) + count != addr)
+		printk("%s: TX Transfer address mismatch, %#4.4x vs. %#4.4x.\n",
+			   dev->name, (start_page << 8) + count, addr);
+	}
+	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
+	return;
+}
+
+/* This function resets the ethercard if something screws up. */
+static void
+hp_init_card(struct device *dev)
+{
+	int irq = dev->irq;
+	NS8390_init(dev, 0);
+	outb_p(irqmap[irq&0x0f] | HP_RUN,
+		   dev->base_addr - NIC_OFFSET + HP_CONFIGURE);
+	return;
+}
+
+#ifdef MODULE
+#define MAX_HP_CARDS	4	/* Max number of HP cards per module */
+#define NAMELEN		8	/* # of chars for storing dev->name */
+static char namelist[NAMELEN * MAX_HP_CARDS] = { 0, };
+static struct device dev_hp[MAX_HP_CARDS] = {
+	{
+		NULL,		/* assign a chunk of namelist[] below */
+		0, 0, 0, 0,
+		0, 0,
+		0, 0, 0, NULL, NULL
+	},
+};
+
+static int io[MAX_HP_CARDS] = { 0, };
+static int irq[MAX_HP_CARDS]  = { 0, };
+
+/* This is set up so that only a single autoprobe takes place per call.
+ISA device autoprobes on a running machine are not recommended. */
+int
+init_module(void)
+{
+	int this_dev, found = 0;
+
+	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
+		struct device *dev = &dev_hp[this_dev];
+		dev->name = namelist+(NAMELEN*this_dev);
+		dev->irq = irq[this_dev];
+		dev->base_addr = io[this_dev];
+		dev->init = hp_probe;
+		if (io[this_dev] == 0)  {
+			if (this_dev != 0) break; /* only autoprobe 1st one */
+			printk(KERN_NOTICE "hp.c: Presently autoprobing (not recommended) for a single card.\n");
+		}
+		if (register_netdev(dev) != 0) {
+			printk(KERN_WARNING "hp.c: No HP card found (i/o = 0x%x).\n", io[this_dev]);
+			if (found != 0) return 0;	/* Got at least one. */
+			return -ENXIO;
+		}
+		found++;
+	}
+
+	return 0;
+}
+
+void
+cleanup_module(void)
+{
+	int this_dev;
+
+	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
+		struct device *dev = &dev_hp[this_dev];
+		if (dev->priv != NULL) {
+			int ioaddr = dev->base_addr - NIC_OFFSET;
+			kfree(dev->priv);
+			dev->priv = NULL;
+			free_irq(dev->irq, NULL);
+			irq2dev_map[dev->irq] = NULL;
+			release_region(ioaddr, HP_IO_EXTENT);
+			unregister_netdev(dev);
+		}
+	}
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c hp.c"
+ * version-control: t
+ * kept-new-versions: 5
+ * tab-width: 4
+ * c-indent-level: 4
+ * End:
+ */