2005-04-16 18:20:36 -04:00
|
|
|
/*
|
|
|
|
* generic/default IDE host driver
|
|
|
|
*
|
2008-04-17 18:46:23 -04:00
|
|
|
* Copyright (C) 2004, 2008 Bartlomiej Zolnierkiewicz
|
2005-04-16 18:20:36 -04:00
|
|
|
* This code was split off from ide.c. See it for original copyrights.
|
|
|
|
*
|
|
|
|
* May be copied or modified under the terms of the GNU General Public License.
|
|
|
|
*/
|
|
|
|
|
2008-04-17 18:46:23 -04:00
|
|
|
/*
|
|
|
|
* For special cases new interfaces may be added using sysfs, i.e.
|
|
|
|
*
|
|
|
|
* echo -n "0x168:0x36e:10" > /sys/class/ide_generic/add
|
|
|
|
*
|
|
|
|
* will add an interface using I/O ports 0x168-0x16f/0x36e and IRQ 10.
|
|
|
|
*/
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/ide.h>
|
|
|
|
|
2008-04-17 18:46:23 -04:00
|
|
|
#define DRV_NAME "ide_generic"
|
|
|
|
|
|
|
|
static ssize_t store_add(struct class *cls, const char *buf, size_t n)
|
|
|
|
{
|
|
|
|
ide_hwif_t *hwif;
|
|
|
|
unsigned int base, ctl;
|
|
|
|
int irq;
|
|
|
|
hw_regs_t hw;
|
|
|
|
u8 idx[] = { 0xff, 0xff, 0xff, 0xff };
|
|
|
|
|
|
|
|
if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2008-04-26 11:36:32 -04:00
|
|
|
hwif = ide_find_port();
|
2008-04-17 18:46:23 -04:00
|
|
|
if (hwif == NULL)
|
|
|
|
return -ENOENT;
|
|
|
|
|
|
|
|
memset(&hw, 0, sizeof(hw));
|
|
|
|
ide_std_init_ports(&hw, base, ctl);
|
|
|
|
hw.irq = irq;
|
|
|
|
hw.chipset = ide_generic;
|
|
|
|
|
|
|
|
ide_init_port_hw(hwif, &hw);
|
|
|
|
|
|
|
|
idx[0] = hwif->index;
|
|
|
|
|
|
|
|
ide_device_add(idx, NULL);
|
|
|
|
|
|
|
|
return n;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct class_attribute ide_generic_class_attrs[] = {
|
|
|
|
__ATTR(add, S_IWUSR, NULL, store_add),
|
|
|
|
__ATTR_NULL
|
|
|
|
};
|
|
|
|
|
|
|
|
static void ide_generic_class_release(struct class *cls)
|
|
|
|
{
|
|
|
|
kfree(cls);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int __init ide_generic_sysfs_init(void)
|
|
|
|
{
|
|
|
|
struct class *cls;
|
|
|
|
int rc;
|
|
|
|
|
|
|
|
cls = kzalloc(sizeof(*cls), GFP_KERNEL);
|
|
|
|
if (!cls)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
cls->name = DRV_NAME;
|
|
|
|
cls->owner = THIS_MODULE;
|
|
|
|
cls->class_release = ide_generic_class_release;
|
|
|
|
cls->class_attrs = ide_generic_class_attrs;
|
|
|
|
|
|
|
|
rc = class_register(cls);
|
|
|
|
if (rc) {
|
|
|
|
kfree(cls);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
static int __init ide_generic_init(void)
|
|
|
|
{
|
2008-01-26 14:13:05 -05:00
|
|
|
u8 idx[MAX_HWIFS];
|
|
|
|
int i;
|
|
|
|
|
ide-generic: probing bugfix
On Tuesday 05 February 2008, Linus Torvalds wrote:
>
> On Sat, 2 Feb 2008, Bartlomiej Zolnierkiewicz wrote:
> >
> > * next part of IDE probing code re-organization saga
> > (that would be me)
>
> This seems to cause very irritating and bogus messages for me:
>
> Probing IDE interface ide0...
> Probing IDE interface ide1...
> ide2: I/O resource 0x0-0x7 not free.
> ide2: ports already in use, skipping probe
> ide3: I/O resource 0x0-0x7 not free.
> ide3: ports already in use, skipping probe
> ide4: I/O resource 0x0-0x7 not free.
> ide4: ports already in use, skipping probe
> ide5: I/O resource 0x0-0x7 not free.
> ide5: ports already in use, skipping probe
> ide6: I/O resource 0x0-0x7 not free.
> ide6: ports already in use, skipping probe
> ide7: I/O resource 0x0-0x7 not free.
> ide7: ports already in use, skipping probe
> ide8: I/O resource 0x0-0x7 not free.
> ide8: ports already in use, skipping probe
> ide9: I/O resource 0x0-0x7 not free.
> ide9: ports already in use, skipping probe
>
> and that's just totally bogus. It shouldn't even request that region,
> since it's not been allocated!
The commit 139ddfcab50e5eabcc88341c8743a990ac1be6a2 ("ide: move handling of
I/O resources out of ide_probe_port()") changed the ordering of hwif->noprobe
check vs ide_hwif_request_regions() call (so that we now reserve I/O regions
before checking for hwif->noprobe). However ide-generic host driver depended
on hwif->noprobe to be set for skipping probing of empty ide_hwifs[] slots.
Fix it by passing only indexes of non-empty slots to ide_device_add_all()
from ide_generic_init().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-05 20:57:48 -05:00
|
|
|
for (i = 0; i < MAX_HWIFS; i++) {
|
|
|
|
ide_hwif_t *hwif = &ide_hwifs[i];
|
2008-04-17 18:46:35 -04:00
|
|
|
unsigned long io_addr = ide_default_io_base(i);
|
|
|
|
hw_regs_t hw;
|
|
|
|
|
|
|
|
if (hwif->chipset == ide_unknown && io_addr) {
|
|
|
|
memset(&hw, 0, sizeof(hw));
|
|
|
|
ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
|
2008-04-17 18:46:35 -04:00
|
|
|
hw.irq = ide_default_irq(io_addr);
|
2008-04-17 18:46:35 -04:00
|
|
|
ide_init_port_hw(hwif, &hw);
|
ide-generic: probing bugfix
On Tuesday 05 February 2008, Linus Torvalds wrote:
>
> On Sat, 2 Feb 2008, Bartlomiej Zolnierkiewicz wrote:
> >
> > * next part of IDE probing code re-organization saga
> > (that would be me)
>
> This seems to cause very irritating and bogus messages for me:
>
> Probing IDE interface ide0...
> Probing IDE interface ide1...
> ide2: I/O resource 0x0-0x7 not free.
> ide2: ports already in use, skipping probe
> ide3: I/O resource 0x0-0x7 not free.
> ide3: ports already in use, skipping probe
> ide4: I/O resource 0x0-0x7 not free.
> ide4: ports already in use, skipping probe
> ide5: I/O resource 0x0-0x7 not free.
> ide5: ports already in use, skipping probe
> ide6: I/O resource 0x0-0x7 not free.
> ide6: ports already in use, skipping probe
> ide7: I/O resource 0x0-0x7 not free.
> ide7: ports already in use, skipping probe
> ide8: I/O resource 0x0-0x7 not free.
> ide8: ports already in use, skipping probe
> ide9: I/O resource 0x0-0x7 not free.
> ide9: ports already in use, skipping probe
>
> and that's just totally bogus. It shouldn't even request that region,
> since it's not been allocated!
The commit 139ddfcab50e5eabcc88341c8743a990ac1be6a2 ("ide: move handling of
I/O resources out of ide_probe_port()") changed the ordering of hwif->noprobe
check vs ide_hwif_request_regions() call (so that we now reserve I/O regions
before checking for hwif->noprobe). However ide-generic host driver depended
on hwif->noprobe to be set for skipping probing of empty ide_hwifs[] slots.
Fix it by passing only indexes of non-empty slots to ide_device_add_all()
from ide_generic_init().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-05 20:57:48 -05:00
|
|
|
|
|
|
|
idx[i] = i;
|
2008-04-17 18:46:35 -04:00
|
|
|
} else
|
ide-generic: probing bugfix
On Tuesday 05 February 2008, Linus Torvalds wrote:
>
> On Sat, 2 Feb 2008, Bartlomiej Zolnierkiewicz wrote:
> >
> > * next part of IDE probing code re-organization saga
> > (that would be me)
>
> This seems to cause very irritating and bogus messages for me:
>
> Probing IDE interface ide0...
> Probing IDE interface ide1...
> ide2: I/O resource 0x0-0x7 not free.
> ide2: ports already in use, skipping probe
> ide3: I/O resource 0x0-0x7 not free.
> ide3: ports already in use, skipping probe
> ide4: I/O resource 0x0-0x7 not free.
> ide4: ports already in use, skipping probe
> ide5: I/O resource 0x0-0x7 not free.
> ide5: ports already in use, skipping probe
> ide6: I/O resource 0x0-0x7 not free.
> ide6: ports already in use, skipping probe
> ide7: I/O resource 0x0-0x7 not free.
> ide7: ports already in use, skipping probe
> ide8: I/O resource 0x0-0x7 not free.
> ide8: ports already in use, skipping probe
> ide9: I/O resource 0x0-0x7 not free.
> ide9: ports already in use, skipping probe
>
> and that's just totally bogus. It shouldn't even request that region,
> since it's not been allocated!
The commit 139ddfcab50e5eabcc88341c8743a990ac1be6a2 ("ide: move handling of
I/O resources out of ide_probe_port()") changed the ordering of hwif->noprobe
check vs ide_hwif_request_regions() call (so that we now reserve I/O regions
before checking for hwif->noprobe). However ide-generic host driver depended
on hwif->noprobe to be set for skipping probing of empty ide_hwifs[] slots.
Fix it by passing only indexes of non-empty slots to ide_device_add_all()
from ide_generic_init().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-05 20:57:48 -05:00
|
|
|
idx[i] = 0xff;
|
|
|
|
}
|
2008-01-26 14:13:05 -05:00
|
|
|
|
2008-02-02 13:56:31 -05:00
|
|
|
ide_device_add_all(idx, NULL);
|
2005-04-16 18:20:36 -04:00
|
|
|
|
2008-04-17 18:46:23 -04:00
|
|
|
if (ide_generic_sysfs_init())
|
|
|
|
printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
|
|
|
|
"class\n");
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(ide_generic_init);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL");
|