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

• Lines: 152
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/mtd/mixmem.c
• Orig date: Fri Feb 9 11:30:23 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/mixmem.c linux/drivers/mtd/mixmem.c
@@ -1,151 +0,0 @@
-/* 
- * mixmem - a block device driver for flash rom found on the 
- *          piggyback board of the multi-purpose mixcom card
- *
- * Author: Gergely Madarasz <gorgo@itc.hu> 
- *
- * Copyright (c) 1999 ITConsult-Pro Co. <info@itc.hu>
- *
- * This code is GPL
- *
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <asm/io.h>
-#include <linux/init.h>
-#include <linux/mtd/mapped.h>
-
-#define MIXCOM_ID_OFFSET 0xc10
-#define MIXCOM_PAGE_OFFSET 0xc11
-#define MIXCOM_ID_1 0x11
-#define MIXCOM_ID_2 0x13
-#define MIXMEM_PAGESIZE 4096
-#define FIRST_BLOCK_OFFSET 0x1000
-
-#if LINUX_VERSION_CODE < 0x20300
-#define __exit
-#endif
-
-static unsigned int mixmem_addrs[] = { 0xc8000, 0xd8000, 0 };
-static unsigned int mixcom_ports[] = { 0x180, 0x280, 0x380, 0 };
-
-// We could store these in the mtd structure, but we only support 1 device..
-static unsigned long base_io = 0;
-static unsigned long base_addr = 0;
-static struct mapped_mtd_info *SSD;
-
-static unsigned long mixmem_page(struct mapped_mtd_info *map,
-				 unsigned long page)
-{
-	outb((char)(page & 0xff), base_io+MIXCOM_PAGE_OFFSET);
-	outb((char)((page >> 8) & 0x7), base_io+MIXCOM_PAGE_OFFSET+1);
-   	return base_addr;
-}
-
-static int flash_probe(int base)
-{
-	int prev,curr;
-	unsigned long flags;
-
-	writeb(0xf0, base);
-	save_flags(flags); cli();
-	
-	prev=readw(base);
-
-	writeb(0xaa, base+0x555);
-	writeb(0x55, base+0x2AA);
-	writeb(0x90, base+0x555);
-	
-	curr=readw(base);
-	
-	restore_flags(flags);
-	writeb(0xf0, base);
-	return(prev==curr?0:curr);
-}
-
-static int mixmem_probe(void) 
-{
-	int i;
-	int id;
-	int chip;
-	
-        /* This should really check to see if the io ports are in use before
-           writing to them */
-	for(i=0;mixcom_ports[i]!=0;i++) {
-		id=inb(mixcom_ports[i]+MIXCOM_ID_OFFSET);
-		if(id==MIXCOM_ID_1 || id==MIXCOM_ID_2) {
-			printk("mixmem: mixcom board found at 0x%3x\n",mixcom_ports[i]);
-			break;
-		}
-	}
-	
-	if(mixcom_ports[i]==0) {
-		printk("mixmem: no mixcom board found\n");
-		return -ENODEV;
-	}
-	
-	if (check_region(mixcom_ports[i]+MIXCOM_PAGE_OFFSET, 2)) return -EAGAIN;
-
-	
-	
-	// What is the deal with first_block_offset?
-	for(i=0;mixmem_addrs[i]!=0;i++) {
-		chip=flash_probe(mixmem_addrs[i]+FIRST_BLOCK_OFFSET);
-		if(chip)break;
-	}
-	
-	if(mixmem_addrs[i]==0) {
-		printk("mixmem: no flash available\n");
-		return -ENODEV;
-	}
-        base_io = mixcom_ports[i];
-        base_addr = mixmem_addrs[i];
-	request_region(mixcom_ports[i]+MIXCOM_PAGE_OFFSET, 2, "mixmem");
-        return 0;
-}
-
-
-static void __exit cleanup_mixmem()
-{
-	mtd_mapped_remove(SSD);
-	kfree(SSD);
-	SSD = 0;
-	release_region(base_io+MIXCOM_PAGE_OFFSET, 2);
-}
-
-//static int __init init_mixmem(void)
-int __init init_mixmem(void)
-{   
-   if (mixmem_probe() != 0)
-      return -EAGAIN;
-
-   // Print out our little header..
-   printk("mixcom MTD IO:0x%lx MEM:0x%lx-0x%lx\n",base_io,base_addr,
-	  base_addr+MIXMEM_PAGESIZE);
-   
-   // Allocate some memory
-   SSD = (struct mapped_mtd_info *)kmalloc(sizeof(*SSD),GFP_KERNEL);
-   if (SSD == 0)
-      return 0;   
-   memset(SSD,0,sizeof(*SSD));
-
-   // Setup the MTD structure
-   SSD->page = mixmem_page;
-   SSD->pagesize = MIXMEM_PAGESIZE;
-   SSD->maxsize = 0x7FF;
-   SSD->mtd.name = "mixcom piggyback";
-
-   // Setup the MTD, this will sense the flash parameters and so on..
-   if (mtd_mapped_setup(SSD) != 0)
-   {
-      printk("Failed to register new device\n");
-      cleanup_module();
-      return -EAGAIN;
-   }
-
-   return 0;
-}
-module_init(init_mixmem);
-module_exit(cleanup_mixmem);