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-rw-r--r--drivers/mtd/devices/block2mtd.c20
-rw-r--r--drivers/mtd/devices/ms02-nv.c8
-rw-r--r--drivers/mtd/devices/mtdram.c265
-rw-r--r--drivers/mtd/devices/phram.c34
-rw-r--r--drivers/mtd/devices/slram.c23
5 files changed, 151 insertions, 199 deletions
diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c
index cfe6ccf0797..4a7a805e756 100644
--- a/drivers/mtd/devices/block2mtd.c
+++ b/drivers/mtd/devices/block2mtd.c
@@ -1,10 +1,9 @@
/*
- * $Id: block2mtd.c,v 1.23 2005/01/05 17:05:46 dwmw2 Exp $
+ * $Id: block2mtd.c,v 1.28 2005/03/19 22:40:44 gleixner Exp $
*
* block2mtd.c - create an mtd from a block device
*
* Copyright (C) 2001,2002 Simon Evans <spse@secret.org.uk>
- * Copyright (C) 2004 Gareth Bult <Gareth@Encryptec.net>
* Copyright (C) 2004,2005 Jörn Engel <joern@wh.fh-wedel.de>
*
* Licence: GPL
@@ -20,7 +19,7 @@
#include <linux/mtd/mtd.h>
#include <linux/buffer_head.h>
-#define VERSION "$Revision: 1.23 $"
+#define VERSION "$Revision: 1.28 $"
#define ERROR(fmt, args...) printk(KERN_ERR "block2mtd: " fmt "\n" , ## args)
@@ -89,7 +88,6 @@ void cache_readahead(struct address_space *mapping, int index)
static struct page* page_readahead(struct address_space *mapping, int index)
{
filler_t *filler = (filler_t*)mapping->a_ops->readpage;
- //do_page_cache_readahead(mapping, index, XXX, 64);
cache_readahead(mapping, index);
return read_cache_page(mapping, index, filler, NULL);
}
@@ -157,7 +155,7 @@ static int block2mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
struct block2mtd_dev *dev = mtd->priv;
struct page *page;
int index = from >> PAGE_SHIFT;
- int offset = from & (PAGE_SHIFT-1);
+ int offset = from & (PAGE_SIZE-1);
int cpylen;
if (from > mtd->size)
@@ -370,16 +368,16 @@ static int ustrtoul(const char *cp, char **endp, unsigned int base)
}
-static int parse_num32(u32 *num32, const char *token)
+static int parse_num(size_t *num, const char *token)
{
char *endp;
- unsigned long n;
+ size_t n;
- n = ustrtoul(token, &endp, 0);
+ n = (size_t) ustrtoul(token, &endp, 0);
if (*endp)
return -EINVAL;
- *num32 = n;
+ *num = n;
return 0;
}
@@ -422,7 +420,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
char buf[80+12], *str=buf; /* 80 for device, 12 for erase size */
char *token[2];
char *name;
- u32 erase_size = PAGE_SIZE;
+ size_t erase_size = PAGE_SIZE;
int i, ret;
if (strnlen(val, sizeof(buf)) >= sizeof(buf))
@@ -449,7 +447,7 @@ static int block2mtd_setup(const char *val, struct kernel_param *kp)
return 0;
if (token[1]) {
- ret = parse_num32(&erase_size, token[1]);
+ ret = parse_num(&erase_size, token[1]);
if (ret)
parse_err("illegal erase size");
}
diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c
index 380ff08d29e..f5026cee087 100644
--- a/drivers/mtd/devices/ms02-nv.c
+++ b/drivers/mtd/devices/ms02-nv.c
@@ -6,7 +6,7 @@
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * $Id: ms02-nv.c,v 1.8 2005/01/05 18:05:12 dwmw2 Exp $
+ * $Id: ms02-nv.c,v 1.10 2005/06/20 12:24:41 macro Exp $
*/
#include <linux/init.h>
@@ -99,8 +99,8 @@ static inline uint ms02nv_probe_one(ulong addr)
* The firmware writes MS02NV_ID at MS02NV_MAGIC and also
* a diagnostic status at MS02NV_DIAG.
*/
- ms02nv_diagp = (ms02nv_uint *)(KSEG1ADDR(addr + MS02NV_DIAG));
- ms02nv_magicp = (ms02nv_uint *)(KSEG1ADDR(addr + MS02NV_MAGIC));
+ ms02nv_diagp = (ms02nv_uint *)(CKSEG1ADDR(addr + MS02NV_DIAG));
+ ms02nv_magicp = (ms02nv_uint *)(CKSEG1ADDR(addr + MS02NV_MAGIC));
err = get_dbe(ms02nv_magic, ms02nv_magicp);
if (err)
return 0;
@@ -233,7 +233,7 @@ static int __init ms02nv_init_one(ulong addr)
goto err_out_csr_res;
}
- printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %uMiB.\n",
+ printk(KERN_INFO "mtd%d: %s at 0x%08lx, size %zuMiB.\n",
mtd->index, ms02nv_name, addr, size >> 20);
mp->next = root_ms02nv_mtd;
diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c
index edac4156d69..bb713fed2f3 100644
--- a/drivers/mtd/devices/mtdram.c
+++ b/drivers/mtd/devices/mtdram.c
@@ -1,9 +1,10 @@
/*
* mtdram - a test mtd device
- * $Id: mtdram.c,v 1.35 2005/01/05 18:05:12 dwmw2 Exp $
+ * $Id: mtdram.c,v 1.37 2005/04/21 03:42:11 joern Exp $
* Author: Alexander Larsson <alex@cendio.se>
*
* Copyright (c) 1999 Alexander Larsson <alex@cendio.se>
+ * Copyright (c) 2005 Joern Engel <joern@wh.fh-wedel.de>
*
* This code is GPL
*
@@ -18,213 +19,140 @@
#include <linux/mtd/compatmac.h>
#include <linux/mtd/mtd.h>
-#ifndef CONFIG_MTDRAM_ABS_POS
- #define CONFIG_MTDRAM_ABS_POS 0
-#endif
-
-#if CONFIG_MTDRAM_ABS_POS > 0
- #include <asm/io.h>
-#endif
-
-#ifdef MODULE
static unsigned long total_size = CONFIG_MTDRAM_TOTAL_SIZE;
static unsigned long erase_size = CONFIG_MTDRAM_ERASE_SIZE;
-module_param(total_size,ulong,0);
-MODULE_PARM_DESC(total_size, "Total device size in KiB");
-module_param(erase_size,ulong,0);
-MODULE_PARM_DESC(erase_size, "Device erase block size in KiB");
#define MTDRAM_TOTAL_SIZE (total_size * 1024)
#define MTDRAM_ERASE_SIZE (erase_size * 1024)
-#else
-#define MTDRAM_TOTAL_SIZE (CONFIG_MTDRAM_TOTAL_SIZE * 1024)
-#define MTDRAM_ERASE_SIZE (CONFIG_MTDRAM_ERASE_SIZE * 1024)
-#endif
+#ifdef MODULE
+module_param(total_size, ulong, 0);
+MODULE_PARM_DESC(total_size, "Total device size in KiB");
+module_param(erase_size, ulong, 0);
+MODULE_PARM_DESC(erase_size, "Device erase block size in KiB");
+#endif
// 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)
+static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
{
- DEBUG(MTD_DEBUG_LEVEL2, "ram_erase(pos:%ld, len:%ld)\n", (long)instr->addr, (long)instr->len);
- if (instr->addr + instr->len > mtd->size) {
- DEBUG(MTD_DEBUG_LEVEL1, "ram_erase() out of bounds (%ld > %ld)\n", (long)(instr->addr + instr->len), (long)mtd->size);
- return -EINVAL;
- }
-
- memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
-
- instr->state = MTD_ERASE_DONE;
- mtd_erase_callback(instr);
-
- return 0;
+ if (instr->addr + instr->len > mtd->size)
+ return -EINVAL;
+
+ memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
+
+ instr->state = MTD_ERASE_DONE;
+ mtd_erase_callback(instr);
+
+ return 0;
}
-static int ram_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf)
+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;
+ 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, loff_t from,
- size_t len)
+static void ram_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
+ size_t len)
{
- DEBUG(MTD_DEBUG_LEVEL2, "ram_unpoint\n");
}
static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
- size_t *retlen, u_char *buf)
+ size_t *retlen, u_char *buf)
{
- DEBUG(MTD_DEBUG_LEVEL2, "ram_read(pos:%ld, len:%ld)\n", (long)from, (long)len);
- if (from + len > mtd->size) {
- DEBUG(MTD_DEBUG_LEVEL1, "ram_read() out of bounds (%ld > %ld)\n", (long)(from + len), (long)mtd->size);
- return -EINVAL;
- }
+ if (from + len > mtd->size)
+ return -EINVAL;
- memcpy(buf, mtd->priv + from, len);
+ memcpy(buf, mtd->priv + from, len);
- *retlen=len;
- return 0;
+ *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)
+ size_t *retlen, const u_char *buf)
{
- DEBUG(MTD_DEBUG_LEVEL2, "ram_write(pos:%ld, len:%ld)\n", (long)to, (long)len);
- if (to + len > mtd->size) {
- DEBUG(MTD_DEBUG_LEVEL1, "ram_write() out of bounds (%ld > %ld)\n", (long)(to + len), (long)mtd->size);
- return -EINVAL;
- }
+ if (to + len > mtd->size)
+ return -EINVAL;
- memcpy ((char *)mtd->priv + to, buf, len);
+ memcpy((char *)mtd->priv + to, buf, len);
- *retlen=len;
- return 0;
+ *retlen = len;
+ return 0;
}
static void __exit cleanup_mtdram(void)
{
- if (mtd_info) {
- del_mtd_device(mtd_info);
-#if CONFIG_MTDRAM_TOTAL_SIZE > 0
- if (mtd_info->priv)
-#if CONFIG_MTDRAM_ABS_POS > 0
- iounmap(mtd_info->priv);
-#else
- vfree(mtd_info->priv);
-#endif
-#endif
- kfree(mtd_info);
- }
-}
-
-int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
- unsigned long size, char *name)
-{
- memset(mtd, 0, sizeof(*mtd));
-
- /* Setup the MTD structure */
- mtd->name = name;
- mtd->type = MTD_RAM;
- mtd->flags = MTD_CAP_RAM;
- mtd->size = size;
- mtd->erasesize = MTDRAM_ERASE_SIZE;
- mtd->priv = mapped_address;
-
- mtd->owner = THIS_MODULE;
- mtd->erase = ram_erase;
- mtd->point = ram_point;
- mtd->unpoint = ram_unpoint;
- mtd->read = ram_read;
- mtd->write = ram_write;
-
- if (add_mtd_device(mtd)) {
- return -EIO;
- }
-
- return 0;
-}
-
-#if CONFIG_MTDRAM_TOTAL_SIZE > 0
-#if CONFIG_MTDRAM_ABS_POS > 0
-static int __init init_mtdram(void)
-{
- void *addr;
- int err;
- /* Allocate some memory */
- mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
- if (!mtd_info)
- return -ENOMEM;
-
- addr = ioremap(CONFIG_MTDRAM_ABS_POS, MTDRAM_TOTAL_SIZE);
- if (!addr) {
- DEBUG(MTD_DEBUG_LEVEL1,
- "Failed to ioremap) memory region of size %ld at ABS_POS:%ld\n",
- (long)MTDRAM_TOTAL_SIZE, (long)CONFIG_MTDRAM_ABS_POS);
- kfree(mtd_info);
- mtd_info = NULL;
- return -ENOMEM;
- }
- err = mtdram_init_device(mtd_info, addr,
- MTDRAM_TOTAL_SIZE, "mtdram test device");
- if (err)
- {
- iounmap(addr);
- kfree(mtd_info);
- mtd_info = NULL;
- return err;
- }
- memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
- return err;
+ if (mtd_info) {
+ del_mtd_device(mtd_info);
+ if (mtd_info->priv)
+ vfree(mtd_info->priv);
+ kfree(mtd_info);
+ }
}
-#else /* CONFIG_MTDRAM_ABS_POS > 0 */
-
-static int __init init_mtdram(void)
+int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
+ unsigned long size, char *name)
{
- void *addr;
- int err;
- /* Allocate some memory */
- mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
- if (!mtd_info)
- return -ENOMEM;
-
- addr = vmalloc(MTDRAM_TOTAL_SIZE);
- if (!addr) {
- DEBUG(MTD_DEBUG_LEVEL1,
- "Failed to vmalloc memory region of size %ld\n",
- (long)MTDRAM_TOTAL_SIZE);
- kfree(mtd_info);
- mtd_info = NULL;
- return -ENOMEM;
- }
- err = mtdram_init_device(mtd_info, addr,
- MTDRAM_TOTAL_SIZE, "mtdram test device");
- if (err)
- {
- vfree(addr);
- kfree(mtd_info);
- mtd_info = NULL;
- return err;
- }
- memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
- return err;
+ memset(mtd, 0, sizeof(*mtd));
+
+ /* Setup the MTD structure */
+ mtd->name = name;
+ mtd->type = MTD_RAM;
+ mtd->flags = MTD_CAP_RAM;
+ mtd->size = size;
+ mtd->erasesize = MTDRAM_ERASE_SIZE;
+ mtd->priv = mapped_address;
+
+ mtd->owner = THIS_MODULE;
+ mtd->erase = ram_erase;
+ mtd->point = ram_point;
+ mtd->unpoint = ram_unpoint;
+ mtd->read = ram_read;
+ mtd->write = ram_write;
+
+ if (add_mtd_device(mtd)) {
+ return -EIO;
+ }
+
+ return 0;
}
-#endif /* !(CONFIG_MTDRAM_ABS_POS > 0) */
-
-#else /* CONFIG_MTDRAM_TOTAL_SIZE > 0 */
static int __init init_mtdram(void)
{
- return 0;
+ void *addr;
+ int err;
+
+ if (!total_size)
+ return -EINVAL;
+
+ /* Allocate some memory */
+ mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
+ if (!mtd_info)
+ return -ENOMEM;
+
+ addr = vmalloc(MTDRAM_TOTAL_SIZE);
+ if (!addr) {
+ kfree(mtd_info);
+ mtd_info = NULL;
+ return -ENOMEM;
+ }
+ err = mtdram_init_device(mtd_info, addr, MTDRAM_TOTAL_SIZE, "mtdram test device");
+ if (err) {
+ vfree(addr);
+ kfree(mtd_info);
+ mtd_info = NULL;
+ return err;
+ }
+ memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
+ return err;
}
-#endif /* !(CONFIG_MTDRAM_TOTAL_SIZE > 0) */
module_init(init_mtdram);
module_exit(cleanup_mtdram);
@@ -232,4 +160,3 @@ module_exit(cleanup_mtdram);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Alexander Larsson <alexl@redhat.com>");
MODULE_DESCRIPTION("Simulated MTD driver for testing");
-
diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
index 5f8e164ddb7..a423a382095 100644
--- a/drivers/mtd/devices/phram.c
+++ b/drivers/mtd/devices/phram.c
@@ -1,5 +1,5 @@
/**
- * $Id: phram.c,v 1.11 2005/01/05 18:05:13 dwmw2 Exp $
+ * $Id: phram.c,v 1.14 2005/03/07 21:43:38 joern Exp $
*
* Copyright (c) ???? Jochen Schäuble <psionic@psionic.de>
* Copyright (c) 2003-2004 Jörn Engel <joern@wh.fh-wedel.de>
@@ -15,9 +15,7 @@
*
* Example:
* phram=swap,64Mi,128Mi phram=test,900Mi,1Mi
- *
*/
-
#include <asm/io.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -36,7 +34,6 @@ struct phram_mtd_list {
static LIST_HEAD(phram_list);
-
static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
{
u_char *start = mtd->priv;
@@ -71,7 +68,8 @@ static int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
return 0;
}
-static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from,
+ size_t len)
{
}
@@ -80,8 +78,11 @@ static int phram_read(struct mtd_info *mtd, loff_t from, size_t len,
{
u_char *start = mtd->priv;
- if (from + len > mtd->size)
+ if (from >= mtd->size)
return -EINVAL;
+
+ if (len > mtd->size - from)
+ len = mtd->size - from;
memcpy(buf, start + from, len);
@@ -94,8 +95,11 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len,
{
u_char *start = mtd->priv;
- if (to + len > mtd->size)
+ if (to >= mtd->size)
return -EINVAL;
+
+ if (len > mtd->size - to)
+ len = mtd->size - to;
memcpy(start + to, buf, len);
@@ -107,9 +111,9 @@ static int phram_write(struct mtd_info *mtd, loff_t to, size_t len,
static void unregister_devices(void)
{
- struct phram_mtd_list *this;
+ struct phram_mtd_list *this, *safe;
- list_for_each_entry(this, &phram_list, list) {
+ list_for_each_entry_safe(this, safe, &phram_list, list) {
del_mtd_device(&this->mtd);
iounmap(this->mtd.priv);
kfree(this);
@@ -145,7 +149,7 @@ static int register_device(char *name, unsigned long start, unsigned long len)
new->mtd.write = phram_write;
new->mtd.owner = THIS_MODULE;
new->mtd.type = MTD_RAM;
- new->mtd.erasesize = 0;
+ new->mtd.erasesize = PAGE_SIZE;
ret = -EAGAIN;
if (add_mtd_device(&new->mtd)) {
@@ -214,6 +218,15 @@ static int parse_name(char **pname, const char *token)
return 0;
}
+
+static inline void kill_final_newline(char *str)
+{
+ char *newline = strrchr(str, '\n');
+ if (newline && !newline[1])
+ *newline = 0;
+}
+
+
#define parse_err(fmt, args...) do { \
ERROR(fmt , ## args); \
return 0; \
@@ -232,6 +245,7 @@ static int phram_setup(const char *val, struct kernel_param *kp)
parse_err("parameter too long\n");
strcpy(str, val);
+ kill_final_newline(str);
for (i=0; i<3; i++)
token[i] = strsep(&str, ",");
diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c
index 5ab15e643be..84fa91392a8 100644
--- a/drivers/mtd/devices/slram.c
+++ b/drivers/mtd/devices/slram.c
@@ -1,6 +1,6 @@
/*======================================================================
- $Id: slram.c,v 1.33 2005/01/05 18:05:13 dwmw2 Exp $
+ $Id: slram.c,v 1.34 2005/01/06 21:16:42 jwboyer Exp $
This driver provides a method to access memory not used by the kernel
itself (i.e. if the kernel commandline mem=xxx is used). To actually
@@ -50,6 +50,7 @@
#include <linux/mtd/mtd.h>
#define SLRAM_MAX_DEVICES_PARAMS 6 /* 3 parameters / device */
+#define SLRAM_BLK_SZ 0x4000
#define T(fmt, args...) printk(KERN_DEBUG fmt, ## args)
#define E(fmt, args...) printk(KERN_NOTICE fmt, ## args)
@@ -108,6 +109,9 @@ static int slram_point(struct mtd_info *mtd, loff_t from, size_t len,
{
slram_priv_t *priv = mtd->priv;
+ if (from + len > mtd->size)
+ return -EINVAL;
+
*mtdbuf = priv->start + from;
*retlen = len;
return(0);
@@ -121,7 +125,13 @@ static int slram_read(struct mtd_info *mtd, loff_t from, size_t len,
size_t *retlen, u_char *buf)
{
slram_priv_t *priv = mtd->priv;
-
+
+ if (from > mtd->size)
+ return -EINVAL;
+
+ if (from + len > mtd->size)
+ len = mtd->size - from;
+
memcpy(buf, priv->start + from, len);
*retlen = len;
@@ -133,6 +143,9 @@ static int slram_write(struct mtd_info *mtd, loff_t to, size_t len,
{
slram_priv_t *priv = mtd->priv;
+ if (to + len > mtd->size)
+ return -EINVAL;
+
memcpy(priv->start + to, buf, len);
*retlen = len;
@@ -188,7 +201,7 @@ static int register_device(char *name, unsigned long start, unsigned long length
(*curmtd)->mtdinfo->name = name;
(*curmtd)->mtdinfo->size = length;
(*curmtd)->mtdinfo->flags = MTD_CLEAR_BITS | MTD_SET_BITS |
- MTD_WRITEB_WRITEABLE | MTD_VOLATILE;
+ MTD_WRITEB_WRITEABLE | MTD_VOLATILE | MTD_CAP_RAM;
(*curmtd)->mtdinfo->erase = slram_erase;
(*curmtd)->mtdinfo->point = slram_point;
(*curmtd)->mtdinfo->unpoint = slram_unpoint;
@@ -196,7 +209,7 @@ static int register_device(char *name, unsigned long start, unsigned long length
(*curmtd)->mtdinfo->write = slram_write;
(*curmtd)->mtdinfo->owner = THIS_MODULE;
(*curmtd)->mtdinfo->type = MTD_RAM;
- (*curmtd)->mtdinfo->erasesize = 0x0;
+ (*curmtd)->mtdinfo->erasesize = SLRAM_BLK_SZ;
if (add_mtd_device((*curmtd)->mtdinfo)) {
E("slram: Failed to register new device\n");
@@ -261,7 +274,7 @@ static int parse_cmdline(char *devname, char *szstart, char *szlength)
}
T("slram: devname=%s, devstart=0x%lx, devlength=0x%lx\n",
devname, devstart, devlength);
- if ((devstart < 0) || (devlength < 0)) {
+ if ((devstart < 0) || (devlength < 0) || (devlength % SLRAM_BLK_SZ != 0)) {
E("slram: Illegal start / length parameter.\n");
return(-EINVAL);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 04:56:47 +0000