patch-2.4.6 linux/drivers/mtd/vmax301.c

• Lines: 241
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/mtd/vmax301.c
• Orig date: Fri Feb 9 11:30:23 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/vmax301.c linux/drivers/mtd/vmax301.c
@@ -1,240 +0,0 @@
-// $Id: vmax301.c,v 1.15 2000/11/27 08:50:22 dwmw2 Exp $
-/* ######################################################################
-
-   Tempustech VMAX SBC301 MTD Driver.
-  
-   The VMAx 301 is a SBC based on . It
-   comes with three builtin AMD 29F016B flash chips and a socket for SRAM or
-   more flash. Each unit has it's own 8k mapping into a settable region 
-   (0xD8000). There are two 8k mappings for each MTD, the first is always set
-   to the lower 8k of the device the second is paged. Writing a 16 bit page
-   value to anywhere in the first 8k will cause the second 8k to page around.
-
-   To boot the device a bios extension must be installed into the first 8k 
-   of flash that is smart enough to copy itself down, page in the rest of 
-   itself and begin executing.
-   
-   ##################################################################### */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <asm/spinlock.h>
-#include <asm/io.h>
-
-#include <linux/mtd/map.h>
-
-
-#define WINDOW_START 0xd8000
-#define WINDOW_LENGTH 0x2000
-#define WINDOW_SHIFT 25
-#define WINDOW_MASK 0x1FFF
-
-/* Actually we could use two spinlocks, but we'd have to have
-   more private space in the struct map_info. We lose a little
-   performance like this, but we'd probably lose more by having
-   the extra indirection from having one of the map->map_priv 
-   fields pointing to yet another private struct.
-*/
-static spinlock_t vmax301_spin = SPIN_LOCK_UNLOCKED;
-
-static void __vmax301_page(struct map_info *map, unsigned long page)
-{
-	writew(page, map->map_priv_2 - WINDOW_LENGTH);
-	map->map_priv_1 = page;
-}
-
-static inline void vmax301_page(struct map_info *map,
-				  unsigned long ofs)
-{
-	unsigned long page = (ofs >> WINDOW_SHIFT);
-	if (map->map_priv_1 != page)
-		__vmax301_page(map, page);
-}
-
-static __u8 vmax301_read8(struct map_info *map, unsigned long ofs)
-{
-	__u8 ret;
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, ofs);
-	ret = readb(map->map_priv_2 + (ofs & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-	return ret;
-}
-
-static __u16 vmax301_read16(struct map_info *map, unsigned long ofs)
-{
-	__u16 ret;
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, ofs);
-	ret = readw(map->map_priv_2 + (ofs & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-	return ret;
-}
-
-static __u32 vmax301_read32(struct map_info *map, unsigned long ofs)
-{
-	__u32 ret;
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, ofs);
-	ret =  readl(map->map_priv_2 + (ofs & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-	return ret;
-}
-
-static void vmax301_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
-{
-	while(len) {
-		unsigned long thislen = len;
-		if (len > (WINDOW_LENGTH - (from & WINDOW_MASK)))
-			thislen = WINDOW_LENGTH-(from & WINDOW_MASK);
-		spin_lock(&vmax301_spin);
-		vmax301_page(map, from);
-		memcpy_fromio(to, map->map_priv_2 + from, thislen);
-		spin_unlock(&vmax301_spin);
-		to += thislen;
-		from += thislen;
-		len -= thislen;
-	}
-}
-
-static void vmax301_write8(struct map_info *map, __u8 d, unsigned long adr)
-{
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, adr);
-	writeb(d, map->map_priv_2 + (adr & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-}
-
-static void vmax301_write16(struct map_info *map, __u16 d, unsigned long adr)
-{
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, adr);
-	writew(d, map->map_priv_2 + (adr & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-}
-
-static void vmax301_write32(struct map_info *map, __u32 d, unsigned long adr)
-{
-	spin_lock(&vmax301_spin);
-	vmax301_page(map, adr);
-	writel(d, map->map_priv_2 + (adr & WINDOW_MASK));
-	spin_unlock(&vmax301_spin);
-}
-
-static void vmax301_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
-{
-	while(len) {
-		unsigned long thislen = len;
-		if (len > (WINDOW_LENGTH - (to & WINDOW_MASK)))
-			thislen = WINDOW_LENGTH-(to & WINDOW_MASK);
-
-		spin_lock(&vmax301_spin);
-		vmax301_page(map, to);
-		memcpy_toio(map->map_priv_2 + to, from, thislen);
-		spin_unlock(&vmax301_spin);		
-		to += thislen;
-		from += thislen;
-		len -= thislen;
-	}
-}
-
-static struct map_info vmax_map[2] = {
-	{
-		name: "VMAX301 Internal Flash",
-		size: 3*2*1024*1024,
-		buswidth: 1,
-		read8: vmax301_read8,
-		read16: vmax301_read16,
-		read32: vmax301_read32,
-		copy_from: vmax301_copy_from,
-		write8: vmax301_write8,
-		write16: vmax301_write16,
-		write32: vmax301_write32,
-		copy_to: vmax301_copy_to,
-		map_priv_1: WINDOW_START + WINDOW_LENGTH,
-		map_priv_2: 0xFFFFFFFF
-	},
-	{
-		name: "VMAX301 Socket",
-		size: 0,
-		buswidth: 1,
-		read8: vmax301_read8,
-		read16: vmax301_read16,
-		read32: vmax301_read32,
-		copy_from: vmax301_copy_from,
-		write8: vmax301_write8,
-		write16: vmax301_write16,
-		write32: vmax301_write32,
-		copy_to: vmax301_copy_to,
-		map_priv_1: WINDOW_START + (3*WINDOW_LENGTH),
-		map_priv_2: 0xFFFFFFFF
-	}
-};
-
-static struct mtd_info *vmax_mtd[2] = {NULL, NULL};
-
-#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
-#define init_vmax301 init_module
-#define cleanup_vmax301 cleanup_module
-#endif
-
-static void __exit cleanup_vmax301(void)
-{
-	int i;
-	
-	for (i=0; i<2; i++) {
-		if (vmax_mtd[i]) {
-			del_mtd_device(vmax_mtd[i]);
-			map_destroy(vmax_mtd[i]);
-		}
-	}
-	iounmap((void *)vmax_map[0].map_priv_1 - WINDOW_START);
-}
-
-int __init init_vmax301(void)
-{
-	int i;
-	unsigned long iomapadr;
-	// Print out our little header..
-	printk("Tempustech VMAX 301 MEM:0x%x-0x%x\n",WINDOW_START,
-	       WINDOW_START+4*WINDOW_LENGTH);
-
-	iomapadr = (unsigned long)ioremap(WINDOW_START, WINDOW_LENGTH*4);
-	if (!iomapadr) {
-		printk("Failed to ioremap memory region\n");
-		return -EIO;
-	}
-	/* Put the address in the map's private data area.
-	   We store the actual MTD IO address rather than the 
-	   address of the first half, because it's used more
-	   often. 
-	*/
-	vmax_map[0].map_priv_1 = iomapadr + WINDOW_START;
-	vmax_map[1].map_priv_1 = iomapadr + (3*WINDOW_START);
-	
-	for (i=0; i<2; i++) {
-		vmax_mtd[i] = do_cfi_probe(&vmax_map[i]);
-		if (!vmax_mtd[i])
-			vmax_mtd[i] = do_jedec_probe(&vmax_map[i]);
-		if (!vmax_mtd[i])
-			vmax_mtd[i] = do_ram_probe(&vmax_map[i]);
-		if (!vmax_mtd[i])
-			vmax_mtd[i] = do_rom_probe(&vmax_map[i]);
-		if (vmax_mtd[i]) {
-			vmax_mtd[i]->module = THIS_MODULE;
-			add_mtd_device(vmax_mtd[i]);
-		}
-	}
-
-	if (!vmax_mtd[1] && !vmax_mtd[2]) {
-		iounmap(iomapadr);
-		return -ENXIO;
-	}
-
-	return 0;
-}
-
-module_init(init_vmax301);
-module_exit(cleanup_vmax301);