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2004-08-21 Yoshinori K. Okuji <okuji@enbug.org>

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Each disk device has its own id now. This is useful to make use
  of multiple disk devices.

  * include/grub/disk.h (grub_disk_dev_id): New enum.
  (GRUB_DISK_DEVICE_BIOSDISK_ID): New constant.
  (GRUB_DISK_DEVICE_OFDISK_ID): Likewise.

  * disk/i386/pc/biosdisk.c (grub_biosdisk_dev): Specify
  GRUB_DISK_DEVICE_BIOSDISK_ID as an id.

  * disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_dev): Specify
  GRUB_DISK_DEVICE_OFDISK_ID as an id.

  * util/i386/pc/biosdisk.c (grub_util_biosdisk_dev): Specify
  GRUB_DISK_DEVICE_BIOSDISK_ID as an id.

  * include/grub/disk.h (struct grub_disk_dev): Added a new member
  "id" which is used by the cache manager.

  * normal/main.c (grub_normal_init_page): Use "GNU GRUB" instead
  of just "GRUB".
This commit is contained in:
okuji 2004-08-21 13:54:22 +00:00
parent 64372eb442
commit 97543f08fc
7 changed files with 77 additions and 27 deletions
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24
ChangeLog
View file

@ -1,3 +1,27 @@
2004-08-21 Yoshinori K. Okuji <okuji@enbug.org>
Each disk device has its own id now. This is useful to make use
of multiple disk devices.
* include/grub/disk.h (grub_disk_dev_id): New enum.
(GRUB_DISK_DEVICE_BIOSDISK_ID): New constant.
(GRUB_DISK_DEVICE_OFDISK_ID): Likewise.
* disk/i386/pc/biosdisk.c (grub_biosdisk_dev): Specify
GRUB_DISK_DEVICE_BIOSDISK_ID as an id.
* disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_dev): Specify
GRUB_DISK_DEVICE_OFDISK_ID as an id.
* util/i386/pc/biosdisk.c (grub_util_biosdisk_dev): Specify
GRUB_DISK_DEVICE_BIOSDISK_ID as an id.
* include/grub/disk.h (struct grub_disk_dev): Added a new member
"id" which is used by the cache manager.
* normal/main.c (grub_normal_init_page): Use "GNU GRUB" instead
of just "GRUB".
2004-08-18 Marco Gerards <metgerards@student.han.nl>
* fs/hfs.c: New file.

3
disk/i386/pc/biosdisk.c
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003 Free Software Foundation, Inc.
* Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -319,6 +319,7 @@ grub_biosdisk_write (grub_disk_t disk, unsigned long sector,
static struct grub_disk_dev grub_biosdisk_dev =
{
.name = "biosdisk",
.id = GRUB_DISK_DEVICE_BIOSDISK_ID,
.iterate = grub_biosdisk_iterate,
.open = grub_biosdisk_open,
.close = grub_biosdisk_close,

1
disk/powerpc/ieee1275/ofdisk.c
View file

@ -146,6 +146,7 @@ grub_ofdisk_write (grub_disk_t disk __attribute ((unused)),
static struct grub_disk_dev grub_ofdisk_dev =
{
.name = "ofdisk",
.id = GRUB_DISK_DEVICE_OFDISK_ID,
.iterate = grub_ofdisk_iterate,
.open = grub_ofdisk_open,
.close = grub_ofdisk_close,

13
include/grub/disk.h
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -25,6 +25,14 @@
#include <grub/types.h>
#include <grub/device.h>
/* These are used to set a device id. When you add a new disk device,
you must define a new id for it here. */
enum grub_disk_dev_id
{
GRUB_DISK_DEVICE_BIOSDISK_ID,
GRUB_DISK_DEVICE_OFDISK_ID,
};
struct grub_disk;
/* Disk device. */
@ -33,6 +41,9 @@ struct grub_disk_dev
/* The device name. */
const char *name;
/* The device id used by the cache manager. */
unsigned long id;
/* Call HOOK with each device name, until HOOK returns non-zero. */
int (*iterate) (int (*hook) (const char *name));

60
kern/disk.c
View file

@ -1,6 +1,6 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003 Free Software Foundation, Inc.
* Copyright (C) 2002,2003,2004 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -35,7 +35,8 @@ static unsigned long grub_last_time = 0;
/* Disk cache. */
struct grub_disk_cache
{
unsigned long id;
unsigned long dev_id;
unsigned long disk_id;
unsigned long sector;
char *data;
int lock;
@ -56,23 +57,27 @@ grub_disk_cache_get_performance (unsigned long *hits, unsigned long *misses)
#endif
static unsigned
grub_disk_cache_get_index (unsigned long id, unsigned long sector)
grub_disk_cache_get_index (unsigned long dev_id, unsigned long disk_id,
unsigned long sector)
{
return ((id * 2606459 + (sector >> GRUB_DISK_CACHE_BITS))
return ((dev_id * 524287UL + disk_id * 2606459UL
+ (sector >> GRUB_DISK_CACHE_BITS))
% GRUB_DISK_CACHE_NUM);
}
static void
grub_disk_cache_invalidate (unsigned long id, unsigned long sector)
grub_disk_cache_invalidate (unsigned long dev_id, unsigned long disk_id,
unsigned long sector)
{
unsigned index;
struct grub_disk_cache *cache;
sector &= ~(GRUB_DISK_CACHE_SIZE - 1);
index = grub_disk_cache_get_index (id, sector);
index = grub_disk_cache_get_index (dev_id, disk_id, sector);
cache = grub_disk_cache_table + index;
if (cache->id == id && cache->sector == sector && cache->data)
if (cache->dev_id == dev_id && cache->disk_id == disk_id
&& cache->sector == sector && cache->data)
{
cache->lock = 1;
grub_free (cache->data);
@ -99,15 +104,17 @@ grub_disk_cache_invalidate_all (void)
}
static char *
grub_disk_cache_fetch (unsigned long id, unsigned long sector)
grub_disk_cache_fetch (unsigned long dev_id, unsigned long disk_id,
unsigned long sector)
{
struct grub_disk_cache *cache;
unsigned index;
index = grub_disk_cache_get_index (id, sector);
index = grub_disk_cache_get_index (dev_id, disk_id, sector);
cache = grub_disk_cache_table + index;
if (cache->id == id && cache->sector == sector)
if (cache->dev_id == dev_id && cache->disk_id == disk_id
&& cache->sector == sector)
{
cache->lock = 1;
#if 0
@ -124,28 +131,30 @@ grub_disk_cache_fetch (unsigned long id, unsigned long sector)
}
static void
grub_disk_cache_unlock (unsigned long id, unsigned long sector)
grub_disk_cache_unlock (unsigned long dev_id, unsigned long disk_id,
unsigned long sector)
{
struct grub_disk_cache *cache;
unsigned index;
index = grub_disk_cache_get_index (id, sector);
index = grub_disk_cache_get_index (dev_id, disk_id, sector);
cache = grub_disk_cache_table + index;
if (cache->id == id && cache->sector == sector)
if (cache->dev_id == dev_id && cache->disk_id == disk_id
&& cache->sector == sector)
cache->lock = 0;
}
static grub_err_t
grub_disk_cache_store (unsigned long id, unsigned long sector,
const char *data)
grub_disk_cache_store (unsigned long dev_id, unsigned long disk_id,
unsigned long sector, const char *data)
{
unsigned index;
struct grub_disk_cache *cache;
grub_disk_cache_invalidate (id, sector);
grub_disk_cache_invalidate (dev_id, disk_id, sector);
index = grub_disk_cache_get_index (id, sector);
index = grub_disk_cache_get_index (dev_id, disk_id, sector);
cache = grub_disk_cache_table + index;
cache->data = grub_malloc (GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS);
@ -154,7 +163,8 @@ grub_disk_cache_store (unsigned long id, unsigned long sector,
grub_memcpy (cache->data, data,
GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS);
cache->id = id;
cache->dev_id = dev_id;
cache->disk_id = disk_id;
cache->sector = sector;
return GRUB_ERR_NONE;
@ -259,7 +269,8 @@ grub_disk_open (const char *name)
closed. */
current_time = grub_get_rtc ();
if (current_time > grub_last_time + GRUB_CACHE_TIMEOUT * GRUB_TICKS_PER_SECOND)
if (current_time > (grub_last_time
+ GRUB_CACHE_TIMEOUT * GRUB_TICKS_PER_SECOND))
grub_disk_cache_invalidate_all ();
grub_last_time = current_time;
@ -354,12 +365,12 @@ grub_disk_read (grub_disk_t disk, unsigned long sector,
len = size;
/* Fetch the cache. */
data = grub_disk_cache_fetch (disk->id, start_sector);
data = grub_disk_cache_fetch (disk->dev->id, disk->id, start_sector);
if (data)
{
/* Just copy it! */
grub_memcpy (buf, data + pos + offset, len);
grub_disk_cache_unlock (disk->id, start_sector);
grub_disk_cache_unlock (disk->dev->id, disk->id, start_sector);
}
else
{
@ -404,7 +415,8 @@ grub_disk_read (grub_disk_t disk, unsigned long sector,
/* Copy it and store it in the disk cache. */
grub_memcpy (buf, tmp_buf + pos + offset, len);
grub_disk_cache_store (disk->id, start_sector, tmp_buf);
grub_disk_cache_store (disk->dev->id, disk->id,
start_sector, tmp_buf);
}
/* Call the read hook, if any. */
@ -466,7 +478,7 @@ grub_disk_write (grub_disk_t disk, unsigned long sector,
grub_memcpy (tmp_buf + offset, buf, len);
grub_disk_cache_invalidate (disk->id, sector);
grub_disk_cache_invalidate (disk->dev->id, disk->id, sector);
if ((disk->dev->write) (disk, sector, 1, tmp_buf) != GRUB_ERR_NONE)
goto finish;
@ -488,7 +500,7 @@ grub_disk_write (grub_disk_t disk, unsigned long sector,
goto finish;
while (n--)
grub_disk_cache_invalidate (disk->id, sector++);
grub_disk_cache_invalidate (disk->dev->id, disk->id, sector++);
buf += len;
size -= len;

2
normal/main.c
View file

@ -281,7 +281,7 @@ grub_normal_init_page (void)
{
grub_cls ();
grub_printf ("\n\
GRUB version %s\n\n",
GNU GRUB version %s\n\n",
PACKAGE_VERSION);
}

1
util/i386/pc/biosdisk.c
View file

@ -477,6 +477,7 @@ grub_util_biosdisk_write (grub_disk_t disk, unsigned long sector,
static struct grub_disk_dev grub_util_biosdisk_dev =
{
.name = "biosdisk",
.id = GRUB_DISK_DEVICE_BIOSDISK_ID,
.iterate = grub_util_biosdisk_iterate,
.open = grub_util_biosdisk_open,
.close = 0,