![Ed L Cashin](/assets/img/avatar_default.png)
add firmware version to info in sysfs Signed-off-by: Ed L. Cashin <ecashin@coraid.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
282 lines
6.7 KiB
C
282 lines
6.7 KiB
C
/* Copyright (c) 2004 Coraid, Inc. See COPYING for GPL terms. */
|
|
/*
|
|
* aoeblk.c
|
|
* block device routines
|
|
*/
|
|
|
|
#include <linux/hdreg.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/ioctl.h>
|
|
#include <linux/genhd.h>
|
|
#include <linux/netdevice.h>
|
|
#include "aoe.h"
|
|
|
|
static kmem_cache_t *buf_pool_cache;
|
|
|
|
/* add attributes for our block devices in sysfs */
|
|
static ssize_t aoedisk_show_state(struct gendisk * disk, char *page)
|
|
{
|
|
struct aoedev *d = disk->private_data;
|
|
|
|
return snprintf(page, PAGE_SIZE,
|
|
"%s%s\n",
|
|
(d->flags & DEVFL_UP) ? "up" : "down",
|
|
(d->flags & DEVFL_CLOSEWAIT) ? ",closewait" : "");
|
|
}
|
|
static ssize_t aoedisk_show_mac(struct gendisk * disk, char *page)
|
|
{
|
|
struct aoedev *d = disk->private_data;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%012llx\n",
|
|
(unsigned long long)mac_addr(d->addr));
|
|
}
|
|
static ssize_t aoedisk_show_netif(struct gendisk * disk, char *page)
|
|
{
|
|
struct aoedev *d = disk->private_data;
|
|
|
|
return snprintf(page, PAGE_SIZE, "%s\n", d->ifp->name);
|
|
}
|
|
/* firmware version */
|
|
static ssize_t aoedisk_show_fwver(struct gendisk * disk, char *page)
|
|
{
|
|
struct aoedev *d = disk->private_data;
|
|
|
|
return snprintf(page, PAGE_SIZE, "0x%04x\n", (unsigned int) d->fw_ver);
|
|
}
|
|
|
|
static struct disk_attribute disk_attr_state = {
|
|
.attr = {.name = "state", .mode = S_IRUGO },
|
|
.show = aoedisk_show_state
|
|
};
|
|
static struct disk_attribute disk_attr_mac = {
|
|
.attr = {.name = "mac", .mode = S_IRUGO },
|
|
.show = aoedisk_show_mac
|
|
};
|
|
static struct disk_attribute disk_attr_netif = {
|
|
.attr = {.name = "netif", .mode = S_IRUGO },
|
|
.show = aoedisk_show_netif
|
|
};
|
|
static struct disk_attribute disk_attr_fwver = {
|
|
.attr = {.name = "firmware-version", .mode = S_IRUGO },
|
|
.show = aoedisk_show_fwver
|
|
};
|
|
|
|
static void
|
|
aoedisk_add_sysfs(struct aoedev *d)
|
|
{
|
|
sysfs_create_file(&d->gd->kobj, &disk_attr_state.attr);
|
|
sysfs_create_file(&d->gd->kobj, &disk_attr_mac.attr);
|
|
sysfs_create_file(&d->gd->kobj, &disk_attr_netif.attr);
|
|
sysfs_create_file(&d->gd->kobj, &disk_attr_fwver.attr);
|
|
}
|
|
void
|
|
aoedisk_rm_sysfs(struct aoedev *d)
|
|
{
|
|
sysfs_remove_link(&d->gd->kobj, "state");
|
|
sysfs_remove_link(&d->gd->kobj, "mac");
|
|
sysfs_remove_link(&d->gd->kobj, "netif");
|
|
sysfs_remove_link(&d->gd->kobj, "firmware-version");
|
|
}
|
|
|
|
static int
|
|
aoeblk_open(struct inode *inode, struct file *filp)
|
|
{
|
|
struct aoedev *d;
|
|
ulong flags;
|
|
|
|
d = inode->i_bdev->bd_disk->private_data;
|
|
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
if (d->flags & DEVFL_UP) {
|
|
d->nopen++;
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
return 0;
|
|
}
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static int
|
|
aoeblk_release(struct inode *inode, struct file *filp)
|
|
{
|
|
struct aoedev *d;
|
|
ulong flags;
|
|
|
|
d = inode->i_bdev->bd_disk->private_data;
|
|
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
|
|
if (--d->nopen == 0 && (d->flags & DEVFL_CLOSEWAIT)) {
|
|
d->flags &= ~DEVFL_CLOSEWAIT;
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
aoecmd_cfg(d->aoemajor, d->aoeminor);
|
|
return 0;
|
|
}
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
aoeblk_make_request(request_queue_t *q, struct bio *bio)
|
|
{
|
|
struct aoedev *d;
|
|
struct buf *buf;
|
|
struct sk_buff *sl;
|
|
ulong flags;
|
|
|
|
blk_queue_bounce(q, &bio);
|
|
|
|
d = bio->bi_bdev->bd_disk->private_data;
|
|
buf = mempool_alloc(d->bufpool, GFP_NOIO);
|
|
if (buf == NULL) {
|
|
printk(KERN_INFO "aoe: aoeblk_make_request: buf allocation "
|
|
"failure\n");
|
|
bio_endio(bio, bio->bi_size, -ENOMEM);
|
|
return 0;
|
|
}
|
|
memset(buf, 0, sizeof(*buf));
|
|
INIT_LIST_HEAD(&buf->bufs);
|
|
buf->start_time = jiffies;
|
|
buf->bio = bio;
|
|
buf->resid = bio->bi_size;
|
|
buf->sector = bio->bi_sector;
|
|
buf->bv = buf->bio->bi_io_vec;
|
|
buf->bv_resid = buf->bv->bv_len;
|
|
buf->bufaddr = page_address(buf->bv->bv_page) + buf->bv->bv_offset;
|
|
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
|
|
if ((d->flags & DEVFL_UP) == 0) {
|
|
printk(KERN_INFO "aoe: aoeblk_make_request: device %ld.%ld is not up\n",
|
|
d->aoemajor, d->aoeminor);
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
mempool_free(buf, d->bufpool);
|
|
bio_endio(bio, bio->bi_size, -ENXIO);
|
|
return 0;
|
|
}
|
|
|
|
list_add_tail(&buf->bufs, &d->bufq);
|
|
aoecmd_work(d);
|
|
|
|
sl = d->sendq_hd;
|
|
d->sendq_hd = d->sendq_tl = NULL;
|
|
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
|
|
aoenet_xmit(sl);
|
|
return 0;
|
|
}
|
|
|
|
/* This ioctl implementation expects userland to have the device node
|
|
* permissions set so that only priviledged users can open an aoe
|
|
* block device directly.
|
|
*/
|
|
static int
|
|
aoeblk_ioctl(struct inode *inode, struct file *filp, uint cmd, ulong arg)
|
|
{
|
|
struct aoedev *d;
|
|
|
|
if (!arg)
|
|
return -EINVAL;
|
|
|
|
d = inode->i_bdev->bd_disk->private_data;
|
|
if ((d->flags & DEVFL_UP) == 0) {
|
|
printk(KERN_ERR "aoe: aoeblk_ioctl: disk not up\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (cmd == HDIO_GETGEO) {
|
|
d->geo.start = get_start_sect(inode->i_bdev);
|
|
if (!copy_to_user((void __user *) arg, &d->geo, sizeof d->geo))
|
|
return 0;
|
|
return -EFAULT;
|
|
}
|
|
printk(KERN_INFO "aoe: aoeblk_ioctl: unknown ioctl %d\n", cmd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static struct block_device_operations aoe_bdops = {
|
|
.open = aoeblk_open,
|
|
.release = aoeblk_release,
|
|
.ioctl = aoeblk_ioctl,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
/* alloc_disk and add_disk can sleep */
|
|
void
|
|
aoeblk_gdalloc(void *vp)
|
|
{
|
|
struct aoedev *d = vp;
|
|
struct gendisk *gd;
|
|
ulong flags;
|
|
|
|
gd = alloc_disk(AOE_PARTITIONS);
|
|
if (gd == NULL) {
|
|
printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate disk "
|
|
"structure for %ld.%ld\n", d->aoemajor, d->aoeminor);
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
d->flags &= ~DEVFL_WORKON;
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
return;
|
|
}
|
|
|
|
d->bufpool = mempool_create(MIN_BUFS,
|
|
mempool_alloc_slab, mempool_free_slab,
|
|
buf_pool_cache);
|
|
if (d->bufpool == NULL) {
|
|
printk(KERN_ERR "aoe: aoeblk_gdalloc: cannot allocate bufpool "
|
|
"for %ld.%ld\n", d->aoemajor, d->aoeminor);
|
|
put_disk(gd);
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
d->flags &= ~DEVFL_WORKON;
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
return;
|
|
}
|
|
|
|
spin_lock_irqsave(&d->lock, flags);
|
|
blk_queue_make_request(&d->blkq, aoeblk_make_request);
|
|
gd->major = AOE_MAJOR;
|
|
gd->first_minor = d->sysminor * AOE_PARTITIONS;
|
|
gd->fops = &aoe_bdops;
|
|
gd->private_data = d;
|
|
gd->capacity = d->ssize;
|
|
snprintf(gd->disk_name, sizeof gd->disk_name, "etherd/e%ld.%ld",
|
|
d->aoemajor, d->aoeminor);
|
|
|
|
gd->queue = &d->blkq;
|
|
d->gd = gd;
|
|
d->flags &= ~DEVFL_WORKON;
|
|
d->flags |= DEVFL_UP;
|
|
|
|
spin_unlock_irqrestore(&d->lock, flags);
|
|
|
|
add_disk(gd);
|
|
aoedisk_add_sysfs(d);
|
|
|
|
printk(KERN_INFO "aoe: %012llx e%lu.%lu v%04x has %llu "
|
|
"sectors\n", (unsigned long long)mac_addr(d->addr),
|
|
d->aoemajor, d->aoeminor,
|
|
d->fw_ver, (long long)d->ssize);
|
|
}
|
|
|
|
void
|
|
aoeblk_exit(void)
|
|
{
|
|
kmem_cache_destroy(buf_pool_cache);
|
|
}
|
|
|
|
int __init
|
|
aoeblk_init(void)
|
|
{
|
|
buf_pool_cache = kmem_cache_create("aoe_bufs",
|
|
sizeof(struct buf),
|
|
0, 0, NULL, NULL);
|
|
if (buf_pool_cache == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|