[PATCH] Support PC-9800 subarchitecture (9/14) NIC

This is the patch to support NEC PC-9800 subarchitecture
against 2.5.65-ac1. (9/14)

C-bus(PC98's legacy bus like ISA) network cards support.
Change IO port and IRQ assign.
Add NE2000 compatible driver for PC-9800.
  PCI netwwork card works fine without patch.

Regards,
Osamu Tomita

drivers/net/3c509.c

@@ -56,6 +56,10 @@
 		v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
 		    - Introduce driver model for EISA cards.
 */
+/*
+  FIXES for PC-9800:
+  Shu Iwanaga: 3c569B(PC-9801 C-bus) support
+*/
 
 #define DRV_NAME	"3c509"
 #define DRV_VERSION	"1.19b"
@@ -257,7 +261,7 @@ static struct mca_driver el3_mca_driver = {
 };
 #endif /* CONFIG_MCA */
 
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 static struct isapnp_device_id el3_isapnp_adapters[] __initdata = {
 	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
 		ISAPNP_VENDOR('T', 'C', 'M'), ISAPNP_FUNCTION(0x5090),
@@ -350,7 +354,7 @@ static void el3_common_remove (struct net_device *dev)
 		if (lp->pmdev)
 			pm_unregister(lp->pmdev);
 #endif
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 		if (lp->type == EL3_PNP)
 			pnp_device_detach(to_pnp_dev(lp->dev));
 #endif
@@ -368,12 +372,12 @@ static int __init el3_probe(int card_idx)
 	int ioaddr, irq, if_port;
 	u16 phys_addr[3];
 	static int current_tag;
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 	static int pnp_cards;
 	struct pnp_dev *idev = NULL;
 #endif /* __ISAPNP__ */
 
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 	if (nopnp == 1)
 		goto no_pnp;
 
@@ -421,6 +425,9 @@ static int __init el3_probe(int card_idx)
 no_pnp:
 #endif /* __ISAPNP__ */
 
+#ifdef CONFIG_X86_PC9800
+	id_port = 0x71d0;
+#else
 	/* Select an open I/O location at 0x1*0 to do contention select. */
 	for ( ; id_port < 0x200; id_port += 0x10) {
 		if (check_region(id_port, 1))
@@ -435,6 +442,7 @@ static int __init el3_probe(int card_idx)
 		printk(" WARNING: No I/O port available for 3c509 activation.\n");
 		return -ENODEV;
 	}
+#endif /* CONFIG_X86_PC9800 */
 	/* Next check for all ISA bus boards by sending the ID sequence to the
 	   ID_PORT.  We find cards past the first by setting the 'current_tag'
 	   on cards as they are found.  Cards with their tag set will not
@@ -465,7 +473,7 @@ static int __init el3_probe(int card_idx)
 		phys_addr[i] = htons(id_read_eeprom(i));
 	}
 
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 	if (nopnp == 0) {
 		/* The ISA PnP 3c509 cards respond to the ID sequence.
 		   This check is needed in order not to register them twice. */
@@ -490,9 +498,19 @@ static int __init el3_probe(int card_idx)
 	{
 		unsigned int iobase = id_read_eeprom(8);
 		if_port = iobase >> 14;
+#ifdef CONFIG_X86_PC9800
+		ioaddr = 0x40d0 + ((iobase & 0x1f) << 8);
+#else
 		ioaddr = 0x200 + ((iobase & 0x1f) << 4);
+#endif
 	}
 	irq = id_read_eeprom(9) >> 12;
+#ifdef CONFIG_X86_PC9800
+	if (irq == 7)
+		irq = 6;
+	else if (irq == 15)
+		irq = 13;
+#endif
 
 	if (!(dev = init_etherdev(NULL, sizeof(struct el3_private))))
 			return -ENOMEM;
@@ -522,7 +540,11 @@ static int __init el3_probe(int card_idx)
 	outb(0xd0 + ++current_tag, id_port);
 
 	/* Activate the adaptor at the EEPROM location. */
+#ifdef CONFIG_X86_PC9800
+	outb((ioaddr >> 8) | 0xe0, id_port);
+#else
 	outb((ioaddr >> 4) | 0xe0, id_port);
+#endif
 
 	EL3WINDOW(0);
 	if (inw(ioaddr) != 0x6d50) {
@@ -534,7 +556,7 @@ static int __init el3_probe(int card_idx)
 	/* Free the interrupt so that some other card can use it. */
 	outw(0x0f00, ioaddr + WN0_IRQ);
 
-#ifdef __ISAPNP__	
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
  found:							/* PNP jumps here... */
 #endif /* __ISAPNP__ */
 
@@ -543,7 +565,7 @@ static int __init el3_probe(int card_idx)
 	dev->irq = irq;
 	dev->if_port = if_port;
 	lp = dev->priv;
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 	lp->dev = &idev->dev;
 #endif
 
@@ -1388,6 +1410,12 @@ el3_up(struct net_device *dev)
 	outw(0x0001, ioaddr + 4);
 
 	/* Set the IRQ line. */
+#ifdef CONFIG_X86_PC9800
+	if (dev->irq == 6)
+		dev->irq = 7;
+	else if (dev->irq == 13)
+		dev->irq = 15;
+#endif
 	outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
 
 	/* Set the station address in window 2 each time opened. */
@@ -1550,7 +1578,7 @@ MODULE_PARM_DESC(debug, "debug level (0-6)");
 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
 MODULE_PARM_DESC(xcvr,"transceiver(s) (0=internal, 1=external)");
 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
-#ifdef __ISAPNP__
+#if defined(__ISAPNP__) && !defined(CONFIG_X86_PC9800)
 MODULE_PARM(nopnp, "i");
 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
 MODULE_DEVICE_TABLE(isapnp, el3_isapnp_adapters);

drivers/net/8390.h

@@ -123,7 +123,8 @@ struct ei_device {
 #define inb_p(port)   in_8(port)
 #define outb_p(val,port)  out_8(port,val)
 
-#elif defined(CONFIG_ARM_ETHERH) || defined(CONFIG_ARM_ETHERH_MODULE)
+#elif defined(CONFIG_ARM_ETHERH) || defined(CONFIG_ARM_ETHERH_MODULE) || \
+      defined(CONFIG_NET_CBUS)
 #define EI_SHIFT(x)	(ei_local->reg_offset[x])
 #else
 #define EI_SHIFT(x)	(x)

drivers/net/Kconfig

@@ -663,7 +663,7 @@ config EL16
 	  as <file:Documentation/networking/net-modules.txt>.
 
 config EL3
-	tristate "3c509/3c529 (MCA)/3c579 \"EtherLink III\" support"
+	tristate "3c509/3c529 (MCA)/3c569B (98)/3c579 \"EtherLink III\" support"
 	depends on NET_VENDOR_3COM && (ISA || EISA || MCA)
 	---help---
 	  If you have a network (Ethernet) card belonging to the 3Com
@@ -932,7 +932,7 @@ config NI65
 source "drivers/net/tulip/Kconfig"
 
 config AT1700
-	tristate "AT1700/1720 support (EXPERIMENTAL)"
+	tristate "AT1700/1720/RE1000Plus(C-Bus) support (EXPERIMENTAL)"
 	depends on NET_ETHERNET && (ISA || MCA) && EXPERIMENTAL
 	---help---
 	  If you have a network (Ethernet) card of this type, say Y and read
@@ -978,7 +978,7 @@ config HP100
 
 config NET_ISA
 	bool "Other ISA cards"
-	depends on NET_ETHERNET && ISA
+	depends on NET_ETHERNET && ISA && !X86_PC9800
 	---help---
 	  If your network (Ethernet) card hasn't been mentioned yet and its
 	  bus system (that's the way the cards talks to the other components
@@ -1176,6 +1176,55 @@ config SK_G16
 	  the Ethernet-HOWTO, available from
 	  <http://www.linuxdoc.org/docs.html#howto>.
 
+config NET_CBUS
+	bool "NEC PC-9800 C-bus cards"
+	depends on NET_ETHERNET && ISA && X86_PC9800
+	---help---
+	  If your network (Ethernet) card hasn't been mentioned yet and its
+	  bus system (that's the way the cards talks to the other components
+	  of your computer) is NEC PC-9800 C-Bus, say Y.
+
+config NE2K_CBUS
+	tristate "Most NE2000-based Ethernet support"
+	depends on NET_CBUS
+
+config NE2K_CBUS_EGY98
+	bool "Melco EGY-98 support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_LGY98
+	bool "Melco LGY-98 support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_ICM
+	bool "ICM IF-27xxET support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_IOLA98
+	bool "I-O DATA LA-98 support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_CNET98EL
+	bool "Contec C-NET(98)E/L support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_CNET98EL_IO_BASE
+	hex "C-NET(98)E/L I/O base address (0xaaed or 0x55ed)"
+	depends on NE2K_CBUS_CNET98EL
+	default "0xaaed"
+
+config NE2K_CBUS_ATLA98
+	bool "Allied Telesis LA-98 Support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_BDN
+	bool "ELECOM Laneed LD-BDN[123]A Support"
+	depends on NE2K_CBUS
+
+config NE2K_CBUS_NEC108
+	bool "NEC PC-9801-108 Support"
+	depends on NE2K_CBUS
+
 config SKMC
 	tristate "SKnet MCA support"
 	depends on NET_ETHERNET && MCA

drivers/net/Makefile

@@ -81,6 +81,7 @@ obj-$(CONFIG_ARM_ETHERH) += 8390.o
 obj-$(CONFIG_WD80x3) += wd.o 8390.o
 obj-$(CONFIG_EL2) += 3c503.o 8390.o
 obj-$(CONFIG_NE2000) += ne.o 8390.o
+obj-$(CONFIG_NE2K_CBUS) += ne2k_cbus.o 8390.o
 obj-$(CONFIG_NE2_MCA) += ne2.o 8390.o
 obj-$(CONFIG_HPLAN) += hp.o 8390.o
 obj-$(CONFIG_HPLAN_PLUS) += hp-plus.o 8390.o

drivers/net/Makefile.lib

@@ -19,6 +19,7 @@ obj-$(CONFIG_MACE)		+= crc32.o
 obj-$(CONFIG_MACMACE)		+= crc32.o
 obj-$(CONFIG_MIPS_AU1000_ENET)	+= crc32.o
 obj-$(CONFIG_NATSEMI)		+= crc32.o	
+obj-$(CONFIG_NE2K_CBUS)		+= crc32.o
 obj-$(CONFIG_PCMCIA_FMVJ18X)	+= crc32.o
 obj-$(CONFIG_PCMCIA_SMC91C92)	+= crc32.o
 obj-$(CONFIG_PCMCIA_XIRTULIP)	+= crc32.o

drivers/net/Space.c

@@ -233,7 +233,7 @@ static struct devprobe isa_probes[] __initdata = {
 #ifdef CONFIG_E2100		/* Cabletron E21xx series. */
 	{e2100_probe, 0},
 #endif
-#ifdef CONFIG_NE2000		/* ISA (use ne2k-pci for PCI cards) */
+#if defined(CONFIG_NE2000) || defined(CONFIG_NE2K_CBUS)	/* ISA & PC-9800 CBUS (use ne2k-pci for PCI cards) */
 	{ne_probe, 0},
 #endif
 #ifdef CONFIG_LANCE		/* ISA/VLB (use pcnet32 for PCI cards) */

drivers/net/at1700.c

@@ -34,6 +34,10 @@
 	only is it difficult to detect, it also moves around in I/O space in
 	response to inb()s from other device probes!
 */
+/*
+	99/03/03  Allied Telesis RE1000 Plus support by T.Hagawa
+	99/12/30	port to 2.3.35 by K.Takai
+*/
 
 #include <linux/config.h>
 #include <linux/errno.h>
@@ -76,10 +80,17 @@ static int fmv18x_probe_list[] __initdata = {
  *	ISA
  */
 
+#ifndef CONFIG_X86_PC9800
 static int at1700_probe_list[] __initdata = {
 	0x260, 0x280, 0x2a0, 0x240, 0x340, 0x320, 0x380, 0x300, 0
 };
 
+#else /* CONFIG_X86_PC9800 */
+static int at1700_probe_list[] __initdata = {
+	0x1d6, 0x1d8, 0x1da, 0x1d4, 0xd4, 0xd2, 0xd8, 0xd0, 0
+};
+
+#endif /* CONFIG_X86_PC9800 */
 /*
  *	MCA
  */
@@ -122,6 +133,7 @@ struct net_local {
 
 
 /* Offsets from the base address. */
+#ifndef CONFIG_X86_PC9800
 #define STATUS			0
 #define TX_STATUS		0
 #define RX_STATUS		1
@@ -136,6 +148,7 @@ struct net_local {
 #define TX_START		10
 #define COL16CNTL		11		/* Controll Reg for 16 collisions */
 #define MODE13			13
+#define RX_CTRL			14
 /* Configuration registers only on the '865A/B chips. */
 #define EEPROM_Ctrl 	16
 #define EEPROM_Data 	17
@@ -144,8 +157,39 @@ struct net_local {
 #define IOCONFIG		18		/* Either read the jumper, or move the I/O. */
 #define IOCONFIG1		19
 #define	SAPROM			20		/* The station address PROM, if no EEPROM. */
+#define MODE24			24
 #define RESET			31		/* Write to reset some parts of the chip. */
 #define AT1700_IO_EXTENT	32
+#define PORT_OFFSET(o) (o)
+#else /* CONFIG_X86_PC9800 */
+#define STATUS			(0x0000)
+#define TX_STATUS		(0x0000)
+#define RX_STATUS		(0x0001)
+#define TX_INTR			(0x0200)/* Bit-mapped interrupt enable registers. */
+#define RX_INTR			(0x0201)
+#define TX_MODE			(0x0400)
+#define RX_MODE			(0x0401)
+#define CONFIG_0		(0x0600)/* Misc. configuration settings. */
+#define CONFIG_1		(0x0601)
+/* Run-time register bank 2 definitions. */
+#define DATAPORT		(0x0800)/* Word-wide DMA or programmed-I/O dataport. */
+#define TX_START		(0x0a00)
+#define COL16CNTL		(0x0a01)/* Controll Reg for 16 collisions */
+#define MODE13			(0x0c01)
+#define RX_CTRL			(0x0e00)
+/* Configuration registers only on the '865A/B chips. */
+#define EEPROM_Ctrl 	(0x1000)
+#define EEPROM_Data 	(0x1200)
+#define CARDSTATUS	16			/* FMV-18x Card Status */
+#define CARDSTATUS1	17			/* FMV-18x Card Status */
+#define IOCONFIG		(0x1400)/* Either read the jumper, or move the I/O. */
+#define IOCONFIG1		(0x1600)
+#define	SAPROM			20		/* The station address PROM, if no EEPROM. */
+#define	MODE24			(0x1800)/* The station address PROM, if no EEPROM. */
+#define RESET			(0x1e01)/* Write to reset some parts of the chip. */
+#define PORT_OFFSET(o) ({ int _o_ = (o); (_o_ & ~1) * 0x100 + (_o_ & 1); })
+#endif /* CONFIG_X86_PC9800 */
+
 
 #define TX_TIMEOUT		10
 
@@ -225,8 +269,20 @@ static int __init at1700_probe1(struct net_device *dev, int ioaddr)
 	int slot, ret = -ENODEV;
 	struct net_local *lp;
 	
+#ifndef CONFIG_X86_PC9800
 	if (!request_region(ioaddr, AT1700_IO_EXTENT, dev->name))
 		return -EBUSY;
+#else
+	for (i = 0; i < 0x2000; i += 0x0200) {
+		if (!request_region(ioaddr + i, 2, dev->name)) {
+			while (i > 0) {
+				i -= 0x0200;
+				release_region(ioaddr + i, 2);
+			}
+			return -EBUSY;
+		}
+	}
+#endif
 
 		/* Resetting the chip doesn't reset the ISA interface, so don't bother.
 	   That means we have to be careful with the register values we probe for.
@@ -317,10 +373,17 @@ static int __init at1700_probe1(struct net_device *dev, int ioaddr)
 		/* Reset the internal state machines. */
 	outb(0, ioaddr + RESET);
 
-	if (is_at1700)
+	if (is_at1700) {
+#ifndef CONFIG_X86_PC9800
 		irq = at1700_irqmap[(read_eeprom(ioaddr, 12)&0x04)
 						   | (read_eeprom(ioaddr, 0)>>14)];
-	else {
+#else
+		{
+			char re1000plus_irqmap[4] = {3, 5, 6, 12};
+			irq = re1000plus_irqmap[inb(ioaddr + IOCONFIG1) >> 6];
+		}
+#endif
+	} else {
 		/* Check PnP mode for FMV-183/184/183A/184A. */
 		/* This PnP routine is very poor. IO and IRQ should be known. */
 		if (inb(ioaddr + CARDSTATUS1) & 0x20) {
@@ -392,18 +455,22 @@ static int __init at1700_probe1(struct net_device *dev, int ioaddr)
 	/* Set the station address in bank zero. */
 	outb(0x00, ioaddr + CONFIG_1);
 	for (i = 0; i < 6; i++)
-		outb(dev->dev_addr[i], ioaddr + 8 + i);
+		outb(dev->dev_addr[i], ioaddr + PORT_OFFSET(8 + i));
 
 	/* Switch to bank 1 and set the multicast table to accept none. */
 	outb(0x04, ioaddr + CONFIG_1);
 	for (i = 0; i < 8; i++)
-		outb(0x00, ioaddr + 8 + i);
+		outb(0x00, ioaddr + PORT_OFFSET(8 + i));
 
 
 	/* Switch to bank 2 */
 	/* Lock our I/O address, and set manual processing mode for 16 collisions. */
 	outb(0x08, ioaddr + CONFIG_1);
+#ifndef CONFIG_X86_PC9800
 	outb(dev->if_port, ioaddr + MODE13);
+#else
+	outb(0, ioaddr + MODE13);
+#endif
 	outb(0x00, ioaddr + COL16CNTL);
 
 	if (net_debug)
@@ -447,7 +514,12 @@ static int __init at1700_probe1(struct net_device *dev, int ioaddr)
 	kfree(dev->priv);
 	dev->priv = NULL;
 err_out:
+#ifndef CONFIG_X86_PC9800
 	release_region(ioaddr, AT1700_IO_EXTENT);
+#else
+	for (i = 0; i < 0x2000; i += 0x0200)
+		release_region(ioaddr + i, 2);
+#endif
 	return ret;
 }
 
@@ -459,7 +531,11 @@ static int __init at1700_probe1(struct net_device *dev, int ioaddr)
 #define EE_DATA_READ	0x80	/* EEPROM chip data out, in reg. 17. */
 
 /* Delay between EEPROM clock transitions. */
+#ifndef CONFIG_X86_PC9800
 #define eeprom_delay()	do { } while (0)
+#else
+#define eeprom_delay()	__asm__ ("out%B0 %%al,%0" :: "N"(0x5f))
+#endif
 
 /* The EEPROM commands include the alway-set leading bit. */
 #define EE_WRITE_CMD	(5 << 6)
@@ -542,12 +618,12 @@ static void net_tx_timeout (struct net_device *dev)
 		inw (ioaddr + STATUS), inb (ioaddr + TX_STATUS) & 0x80
 		? "IRQ conflict" : "network cable problem");
 	printk ("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n",
-	 dev->name, inw (ioaddr + 0), inw (ioaddr + 2), inw (ioaddr + 4),
-		inw (ioaddr + 6), inw (ioaddr + 8), inw (ioaddr + 10),
-		inw (ioaddr + 12), inw (ioaddr + 14));
+	 dev->name, inw(ioaddr + TX_STATUS), inw(ioaddr + TX_INTR), inw(ioaddr + TX_MODE),
+		inw(ioaddr + CONFIG_0), inw(ioaddr + DATAPORT), inw(ioaddr + TX_START),
+		inw(ioaddr + MODE13 - 1), inw(ioaddr + RX_CTRL));
 	lp->stats.tx_errors++;
 	/* ToDo: We should try to restart the adaptor... */
-	outw (0xffff, ioaddr + 24);
+	outw(0xffff, ioaddr + MODE24);
 	outw (0xffff, ioaddr + TX_STATUS);
 	outb (0x5a, ioaddr + CONFIG_0);
 	outb (0xe8, ioaddr + CONFIG_1);
@@ -704,7 +780,7 @@ net_rx(struct net_device *dev)
 				   dev->name, inb(ioaddr + RX_MODE), status);
 #ifndef final_version
 		if (status == 0) {
-			outb(0x05, ioaddr + 14);
+			outb(0x05, ioaddr + RX_CTRL);
 			break;
 		}
 #endif
@@ -724,7 +800,7 @@ net_rx(struct net_device *dev)
 					   dev->name, pkt_len);
 				/* Prime the FIFO and then flush the packet. */
 				inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
-				outb(0x05, ioaddr + 14);
+				outb(0x05, ioaddr + RX_CTRL);
 				lp->stats.rx_errors++;
 				break;
 			}
@@ -734,7 +810,7 @@ net_rx(struct net_device *dev)
 					   dev->name, pkt_len);
 				/* Prime the FIFO and then flush the packet. */
 				inw(ioaddr + DATAPORT); inw(ioaddr + DATAPORT);
-				outb(0x05, ioaddr + 14);
+				outb(0x05, ioaddr + RX_CTRL);
 				lp->stats.rx_dropped++;
 				break;
 			}
@@ -761,7 +837,7 @@ net_rx(struct net_device *dev)
 			if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40)
 				break;
 			inw(ioaddr + DATAPORT);				/* dummy status read */
-			outb(0x05, ioaddr + 14);
+			outb(0x05, ioaddr + RX_CTRL);
 		}
 
 		if (net_debug > 5)
@@ -844,24 +920,28 @@ set_rx_mode(struct net_device *dev)
 		outb(0x02, ioaddr + RX_MODE);	/* Use normal mode. */
 	}
 
-	save_flags(flags);
-	cli();
+	spin_lock_irqsave (&lp->lock, flags);
 	if (memcmp(mc_filter, lp->mc_filter, sizeof(mc_filter))) {
 		int saved_bank = inw(ioaddr + CONFIG_0);
 		/* Switch to bank 1 and set the multicast table. */
 		outw((saved_bank & ~0x0C00) | 0x0480, ioaddr + CONFIG_0);
 		for (i = 0; i < 8; i++)
-			outb(mc_filter[i], ioaddr + 8 + i);
+			outb(mc_filter[i], ioaddr + PORT_OFFSET(8 + i));
 		memcpy(lp->mc_filter, mc_filter, sizeof(mc_filter));
 		outw(saved_bank, ioaddr + CONFIG_0);
 	}
-	restore_flags(flags);
+	spin_unlock_irqrestore (&lp->lock, flags);
 	return;
 }
 
 #ifdef MODULE
 static struct net_device dev_at1700;
+#ifndef CONFIG_X86_PC9800
 static int io = 0x260;
+#else
+static int io = 0xd0;
+#endif
+
 static int irq;
 
 MODULE_PARM(io, "i");
@@ -901,7 +981,15 @@ cleanup_module(void)
 
 	/* If we don't do this, we can't re-insmod it later. */
 	free_irq(dev_at1700.irq, NULL);
+#ifndef CONFIG_X86_PC9800
 	release_region(dev_at1700.base_addr, AT1700_IO_EXTENT);
+#else
+	{
+		int i;
+		for (i = 0; i < 0x2000; i += 0x200)
+			release_region(dev_at1700.base_addr + i, 2);
+	}
+#endif
 }
 #endif /* MODULE */
 MODULE_LICENSE("GPL");