1 files changed, 160 insertions, 0 deletions
diff --git a/uClinux-2.4.20-uc1/drivers/mtd/maps/w90n745_map.c b/uClinux-2.4.20-uc1/drivers/mtd/maps/w90n745_map.c
new file mode 100644
index 0000000..a3fd78b
--- /dev/null
+++ b/uClinux-2.4.20-uc1/drivers/mtd/maps/w90n745_map.c
@@ -0,0 +1,160 @@
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/partitions.h>
+#include <linux/config.h>
+
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/major.h>
+#include <asm/io.h>
+
+
+#if 1
+#define DEBUGMTD		printk
+#else
+#define DEBUGMTD
+#endif
+
+#define WINDOW_ADDR		0xFF000000 //lsshi
+#define WINDOW_SIZE		0x400000 //flash size (4M)
+
+#define BUSWIDTH 2
+
+ 
+
+static struct mtd_info *mymtd;
+
+__u8 W90N745_read8(struct map_info *map, unsigned long ofs)
+{
+	return __raw_readb(map->map_priv_1 + ofs);
+}
+
+struct map_info W90N745_map;
+
+__u16 W90N745_read16(struct map_info *map, unsigned long ofs)
+{
+	return __raw_readw(map->map_priv_1 + ofs);
+}
+
+map_word W90N745_read(struct map_info *map, unsigned long ofs)
+{
+	map_word r;
+
+	r.x[0] = __raw_readw(map->map_priv_1 + ofs);	
+	return r;	
+}
+
+__u32 W90N745_read32(struct map_info *map, unsigned long ofs)
+{
+	return __raw_readl(map->map_priv_1 + ofs);
+}
+
+void W90N745_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
+{
+	memcpy_fromio(to, map->map_priv_1 + from, len);
+}
+
+void W90N745_write8(struct map_info *map, __u8 d, unsigned long adr)
+{
+	__raw_writeb(d, map->map_priv_1 + adr);
+	mb();
+}
+
+void W90N745_write16(struct map_info *map, __u16 d, unsigned long adr)
+{
+	__raw_writew(d, map->map_priv_1 + adr);
+	mb();
+}
+
+void W90N745_write(struct map_info *map, const map_word datum, unsigned long ofs)
+{
+	__raw_writew(datum.x[0], map->map_priv_1 + ofs);
+
+	mb();
+}
+
+void W90N745_write32(struct map_info *map, __u32 d, unsigned long adr)
+
+{
+	__raw_writel(d, map->map_priv_1 + adr);
+	mb();
+}
+
+void W90N745_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
+{
+	memcpy_toio(map->map_priv_1 + to, from, len);
+}
+
+struct map_info W90N745_map = {
+	name: "POS-TAX flash device", //lsshi W90N745 flash device
+	size: WINDOW_SIZE,
+	buswidth: BUSWIDTH,
+	read: W90N745_read,
+	read8: W90N745_read8,
+	read16: W90N745_read16,
+	read32: W90N745_read32,
+	copy_from: W90N745_copy_from,
+	write8: W90N745_write8,
+	write16: W90N745_write16,
+	write: W90N745_write, 
+	write32: W90N745_write32,
+	copy_to: W90N745_copy_to
+};
+
+/*
+ * MTD 'PARTITIONING' STUFF 
+ */
+
+static struct mtd_partition W90N745_partitions[] = {
+	{
+		name: "images 3M",
+		size: 0x300000,
+		offset: 0
+	}, {
+		/*if jffs2 can run on this partition the size can not less than 6 sectors*/
+		name: "user 1M",
+		size: 0x100000,
+		offset: 0x00300000	//offset
+	}
+};
+
+int __init init_POS_FLASH(void)
+{
+	W90N745_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
+	
+	if (!W90N745_map.map_priv_1) {	
+		printk("Failed to ioremap\n");	
+		return -EIO;	
+	}
+	
+	mymtd = do_map_probe("cfi_probe", &W90N745_map);
+
+	if (mymtd) {	
+//		mymtd->owner = THIS_MODULE;		
+		return add_mtd_partitions(mymtd, W90N745_partitions, sizeof(W90N745_partitions) / sizeof(struct mtd_partition));
+	}
+	
+	iounmap((void *)W90N745_map.map_priv_1);
+	
+	return -ENXIO;
+}
+
+static void __exit cleanup_POS_FLASH(void)
+{
+	if (mymtd) {
+		del_mtd_partitions(mymtd);
+		map_destroy(mymtd);
+	}
+	
+	if (W90N745_map.map_priv_1) {
+		iounmap((void *)W90N745_map.map_priv_1);
+		W90N745_map.map_priv_1 = 0;
+	}
+}
+
+module_init(init_POS_FLASH);
+module_exit(cleanup_POS_FLASH);