Index: drivers/mtd/nand/Kconfig
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/nand/Kconfig,v
retrieving revision 1.26
diff -u -r1.26 Kconfig
--- drivers/mtd/nand/Kconfig	5 Jan 2005 12:42:24 -0000	1.26
+++ drivers/mtd/nand/Kconfig	9 Feb 2005 08:17:20 -0000
@@ -204,4 +204,11 @@
 	  The simulator may simulate verious NAND flash chips for the
 	  MTD nand layer.
  
+config MTD_NAND_IDE
+	tristate "Support for NAND Flash through a PC's IDE interface"
+	depends on MTD_NAND && MTD_PARTITIONS
+	help
+	  This enables the driver for accessing NAND Flash through the
+	  IDE interface of a PC.
+	
 endmenu
Index: drivers/mtd/nand/Makefile.common
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/nand/Makefile.common,v
retrieving revision 1.15
diff -u -r1.15 Makefile.common
--- drivers/mtd/nand/Makefile.common	26 Nov 2004 12:28:22 -0000	1.15
+++ drivers/mtd/nand/Makefile.common	9 Feb 2005 08:17:20 -0000
@@ -20,5 +20,6 @@
 obj-$(CONFIG_MTD_NAND_RTC_FROM4)	+= rtc_from4.o
 obj-$(CONFIG_MTD_NAND_SHARPSL)		+= sharpsl.o
 obj-$(CONFIG_MTD_NAND_NANDSIM)		+= nandsim.o
+obj-$(CONFIG_MTD_NAND_IDE)		+= ide.o
 
 nand-objs = nand_base.o nand_bbt.o
Index: drivers/mtd/nand/nand_base.c
===================================================================
RCS file: /home/cvs/mtd/drivers/mtd/nand/nand_base.c,v
retrieving revision 1.130
diff -u -r1.130 nand_base.c
--- drivers/mtd/nand/nand_base.c	24 Jan 2005 03:07:43 -0000	1.130
+++ drivers/mtd/nand/nand_base.c	9 Feb 2005 08:17:24 -0000
@@ -84,6 +84,8 @@
 #include <linux/mtd/partitions.h>
 #endif
 
+#define NAND_USE_IO_INSTR	0
+
 /* Define default oob placement schemes for large and small page devices */
 static struct nand_oobinfo nand_oob_8 = {
 	.useecc = MTD_NANDECC_AUTOPLACE,
@@ -189,7 +191,13 @@
 static u_char nand_read_byte(struct mtd_info *mtd)
 {
 	struct nand_chip *this = mtd->priv;
-	return readb(this->IO_ADDR_R);
+
+	switch(NAND_USE_IO_INSTR) {
+		case 0:
+			return readb(this->IO_ADDR_R);
+		case 1:
+			return inb((unsigned int) this->IO_ADDR_R);
+	}
 }
 
 /**
@@ -202,7 +210,15 @@
 static void nand_write_byte(struct mtd_info *mtd, u_char byte)
 {
 	struct nand_chip *this = mtd->priv;
-	writeb(byte, this->IO_ADDR_W);
+
+	switch(NAND_USE_IO_INSTR) {
+		case 0:
+			writeb(byte, this->IO_ADDR_W);
+			break;
+		case 1:
+			outb(byte, (unsigned int) this->IO_ADDR_W);
+			break;
+	}
 }
 
 /**
@@ -295,8 +311,16 @@
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++)
-		writeb(buf[i], this->IO_ADDR_W);
+	switch(NAND_USE_IO_INSTR) {
+		case 0:
+			for (i=0; i<len; i++)
+				writeb(buf[i], this->IO_ADDR_W);
+			break;
+		case 1:
+			for (i=0; i<len; i++)
+				outb(buf[i], (unsigned int) this->IO_ADDR_W);
+			break;
+	}
 }
 
 /**
@@ -312,8 +336,16 @@
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++)
-		buf[i] = readb(this->IO_ADDR_R);
+	switch(NAND_USE_IO_INSTR) {
+		case 0:
+			for (i=0; i<len; i++)
+				buf[i] = readb(this->IO_ADDR_R);
+			break;
+		case 1:
+			for (i=0; i<len; i++)
+				buf[i] = inb((unsigned int) this->IO_ADDR_R);
+			break;
+	}
 }
 
 /**
@@ -329,10 +361,18 @@
 	int i;
 	struct nand_chip *this = mtd->priv;
 
-	for (i=0; i<len; i++)
-		if (buf[i] != readb(this->IO_ADDR_R))
-			return -EFAULT;
-
+	switch(NAND_USE_IO_INSTR) {
+		case 0:
+			for (i=0; i<len; i++)
+				if (buf[i] != readb(this->IO_ADDR_R))
+					return -EFAULT;
+			break;
+		case 1:
+			for (i=0; i<len; i++)
+				if (buf[i] != inb((unsigned int) this->IO_ADDR_R))
+					return -EFAULT;
+			break;
+	}
 	return 0;
 }