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

• Lines: 149
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.5/linux/drivers/mtd/mtdram.c
• Orig date: Fri Feb 9 11:30:23 2001

diff -u --recursive --new-file v2.4.5/linux/drivers/mtd/mtdram.c linux/drivers/mtd/mtdram.c
@@ -1,148 +0,0 @@
-/* 
- * mtdram - a test mtd device
- * $Id: mtdram.c,v 1.15 2000/07/13 12:40:46 scote1 Exp $
- * Author: Alexander Larsson <alex@cendio.se> 
- *
- * Copyright (c) 1999 Alexander Larsson <alex@cendio.se>
- *
- * This code is GPL
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/mtd/compatmac.h>
-#include <linux/mtd/mtd.h>
-
-
-#define MTDRAM_TOTAL_SIZE (CONFIG_MTDRAM_TOTAL_SIZE * 1024)
-#define MTDRAM_ERASE_SIZE (CONFIG_MTDRAM_ERASE_SIZE * 1024)
-
-
-// We could store these in the mtd structure, but we only support 1 device..
-static struct mtd_info *mtd_info;
-
-
-static int
-ram_erase(struct mtd_info *mtd, struct erase_info *instr)
-{
-  if (instr->addr + instr->len > mtd->size)
-    return -EINVAL;
-	
-  memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
-  
-  instr->state = MTD_ERASE_DONE;
-
-  if (instr->callback)
-    (*(instr->callback))(instr);
-  return 0;
-}
-
-static int ram_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf)
-{
-  if (from + len > mtd->size)
-    return -EINVAL;
-  
-  *mtdbuf = mtd->priv + from;
-  *retlen = len;
-  return 0;
-}
-
-static void ram_unpoint (struct mtd_info *mtd, u_char *addr)
-{
-}
-
-static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
-	     size_t *retlen, u_char *buf)
-{
-  if (from + len > mtd->size)
-    return -EINVAL;
-
-  memcpy(buf, mtd->priv + from, len);
-
-  *retlen=len;
-  return 0;
-}
-
-static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,
-	      size_t *retlen, const u_char *buf)
-{
-  if (to + len > mtd->size)
-    return -EINVAL;
-  
-  memcpy ((char *)mtd->priv + to, buf, len);
-
-  *retlen=len;
-  return 0;
-}
-
-#if LINUX_VERSION_CODE < 0x20300
-#ifdef MODULE
-#define init_mtdram init_module
-#define cleanup_mtdram cleanup_module
-#endif
-#endif
-
-//static void __exit cleanup_mtdram(void)
-mod_exit_t cleanup_mtdram(void)
-{
-  if (mtd_info) {
-    del_mtd_device(mtd_info);
-    if (mtd_info->priv)
-      vfree(mtd_info->priv);
-    kfree(mtd_info);
-  }
-}
-
-extern struct module __this_module;
-
-mod_init_t init_mtdram(void)
-{
-   // Allocate some memory
-   mtd_info = (struct mtd_info *)kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
-   if (mtd_info == 0)
-      return 0;
-   
-   memset(mtd_info, 0, sizeof(*mtd_info));
-
-   // Setup the MTD structure
-   mtd_info->name = "mtdram test device";
-   mtd_info->type = MTD_RAM;
-   mtd_info->flags = MTD_CAP_RAM;
-   mtd_info->size = MTDRAM_TOTAL_SIZE;
-   mtd_info->erasesize = MTDRAM_ERASE_SIZE;
-   mtd_info->priv = vmalloc(MTDRAM_TOTAL_SIZE);
-   memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
-   mtd_info->module = THIS_MODULE;			
-#endif
-
-   if (!mtd_info->priv) {
-     kfree(mtd_info);
-     mtd_info = NULL;
-     return -ENOMEM;
-   }
-   mtd_info->erase = ram_erase;
-   mtd_info->point = ram_point;
-   mtd_info->unpoint = ram_unpoint;
-   mtd_info->read = ram_read;
-   mtd_info->write = ram_write;
-
-   if (add_mtd_device(mtd_info)) {
-     vfree(mtd_info->priv);
-     kfree(mtd_info);
-     mtd_info = NULL;
-     return -EIO;
-   }
-   
-   return 0;
-}
-
-#if LINUX_VERSION_CODE > 0x20300
-module_init(init_mtdram);
-module_exit(cleanup_mtdram);
-#endif