*
*/
+#define KMSG_COMPONENT "dasd"
+
#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/module.h>
/* This is ugly... */
#define PRINTK_HEADER "dasd_devmap:"
+#define DASD_BUS_ID_SIZE 20
#include "dasd_int.h"
*/
struct dasd_devmap {
struct list_head list;
- char bus_id[BUS_ID_SIZE];
+ char bus_id[DASD_BUS_ID_SIZE];
unsigned int devindex;
unsigned short features;
struct dasd_device *device;
int dasd_autodetect = 0; /* is true, when autodetection is active */
int dasd_nopav = 0; /* is true, when PAV is disabled */
EXPORT_SYMBOL_GPL(dasd_nopav);
+int dasd_nofcx; /* disable High Performance Ficon */
+EXPORT_SYMBOL_GPL(dasd_nofcx);
/*
* char *dasd[] is intended to hold the ranges supplied by the dasd= statement
int hash, i;
hash = 0;
- for (i = 0; (i < BUS_ID_SIZE) && *bus_id; i++, bus_id++)
+ for (i = 0; (i < DASD_BUS_ID_SIZE) && *bus_id; i++, bus_id++)
hash += *bus_id;
return hash & 0xff;
}
* Read a device busid/devno from a string.
*/
static int
+
dasd_busid(char **str, int *id0, int *id1, int *devno)
{
int val, old_style;
/* Interpret ipldev busid */
if (strncmp(DASD_IPLDEV, *str, strlen(DASD_IPLDEV)) == 0) {
if (ipl_info.type != IPL_TYPE_CCW) {
- MESSAGE(KERN_ERR, "%s", "ipl device is not a ccw "
- "device");
+ pr_err("The IPL device is not a CCW device\n");
return -EINVAL;
}
*id0 = 0;
features |= DASD_FEATURE_USEDIAG;
else if (len == 6 && !strncmp(str, "erplog", 6))
features |= DASD_FEATURE_ERPLOG;
+ else if (len == 8 && !strncmp(str, "failfast", 8))
+ features |= DASD_FEATURE_FAILFAST;
else {
- MESSAGE(KERN_WARNING,
- "unsupported feature: %*s, "
- "ignoring setting", len, str);
+ pr_warning("%*s is not a supported device option\n",
+ len, str);
rc = -EINVAL;
}
str += len;
str++;
}
if (*str != ')') {
- MESSAGE(KERN_WARNING, "%s",
- "missing ')' in dasd parameter string\n");
+ pr_warning("A closing parenthesis ')' is missing in the "
+ "dasd= parameter\n");
rc = -EINVAL;
} else
str++;
}
if (strncmp("autodetect", parsestring, length) == 0) {
dasd_autodetect = 1;
- MESSAGE (KERN_INFO, "%s",
- "turning to autodetection mode");
+ pr_info("The autodetection mode has been activated\n");
return residual_str;
}
if (strncmp("probeonly", parsestring, length) == 0) {
dasd_probeonly = 1;
- MESSAGE(KERN_INFO, "%s",
- "turning to probeonly mode");
+ pr_info("The probeonly mode has been activated\n");
return residual_str;
}
if (strncmp("nopav", parsestring, length) == 0) {
if (MACHINE_IS_VM)
- MESSAGE(KERN_INFO, "%s", "'nopav' not supported on VM");
+ pr_info("'nopav' is not supported on z/VM\n");
else {
dasd_nopav = 1;
- MESSAGE(KERN_INFO, "%s", "disable PAV mode");
+ pr_info("PAV support has be deactivated\n");
}
return residual_str;
}
+ if (strncmp("nofcx", parsestring, length) == 0) {
+ dasd_nofcx = 1;
+ pr_info("High Performance FICON support has been "
+ "deactivated\n");
+ return residual_str;
+ }
if (strncmp("fixedbuffers", parsestring, length) == 0) {
if (dasd_page_cache)
return residual_str;
PAGE_SIZE, SLAB_CACHE_DMA,
NULL);
if (!dasd_page_cache)
- MESSAGE(KERN_WARNING, "%s", "Failed to create slab, "
+ DBF_EVENT(DBF_WARNING, "%s", "Failed to create slab, "
"fixed buffer mode disabled.");
else
- MESSAGE (KERN_INFO, "%s",
+ DBF_EVENT(DBF_INFO, "%s",
"turning on fixed buffer mode");
return residual_str;
}
int from, from_id0, from_id1;
int to, to_id0, to_id1;
int features, rc;
- char bus_id[BUS_ID_SIZE+1], *str;
+ char bus_id[DASD_BUS_ID_SIZE+1], *str;
str = parsestring;
rc = dasd_busid(&str, &from_id0, &from_id1, &from);
(from_id0 != to_id0 || from_id1 != to_id1 || from > to))
rc = -EINVAL;
if (rc) {
- MESSAGE(KERN_ERR, "Invalid device range %s", parsestring);
+ pr_err("%s is not a valid device range\n", parsestring);
return ERR_PTR(rc);
}
features = dasd_feature_list(str, &str);
return str + 1;
if (*str == '\0')
return str;
- MESSAGE(KERN_WARNING,
- "junk at end of dasd parameter string: %s\n", str);
+ pr_warning("The dasd= parameter value %s has an invalid ending\n",
+ str);
return ERR_PTR(-EINVAL);
}
devmap = NULL;
hash = dasd_hash_busid(bus_id);
list_for_each_entry(tmp, &dasd_hashlists[hash], list)
- if (strncmp(tmp->bus_id, bus_id, BUS_ID_SIZE) == 0) {
+ if (strncmp(tmp->bus_id, bus_id, DASD_BUS_ID_SIZE) == 0) {
devmap = tmp;
break;
}
if (!devmap) {
/* This bus_id is new. */
new->devindex = dasd_max_devindex++;
- strncpy(new->bus_id, bus_id, BUS_ID_SIZE);
+ strncpy(new->bus_id, bus_id, DASD_BUS_ID_SIZE);
new->features = features;
new->device = NULL;
list_add(&new->list, &dasd_hashlists[hash]);
devmap = ERR_PTR(-ENODEV);
hash = dasd_hash_busid(bus_id);
list_for_each_entry(tmp, &dasd_hashlists[hash], list) {
- if (strncmp(tmp->bus_id, bus_id, BUS_ID_SIZE) == 0) {
+ if (strncmp(tmp->bus_id, bus_id, DASD_BUS_ID_SIZE) == 0) {
devmap = tmp;
break;
}
{
struct dasd_devmap *devmap;
- devmap = dasd_find_busid(cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&cdev->dev));
if (IS_ERR(devmap))
- devmap = dasd_add_busid(cdev->dev.bus_id,
+ devmap = dasd_add_busid(dev_name(&cdev->dev),
DASD_FEATURE_DEFAULT);
return devmap;
}
}
spin_lock_irqsave(get_ccwdev_lock(cdev), flags);
- cdev->dev.driver_data = device;
+ dev_set_drvdata(&cdev->dev, device);
spin_unlock_irqrestore(get_ccwdev_lock(cdev), flags);
return device;
unsigned long flags;
/* First remove device pointer from devmap. */
- devmap = dasd_find_busid(device->cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&device->cdev->dev));
BUG_ON(IS_ERR(devmap));
spin_lock(&dasd_devmap_lock);
if (devmap->device != device) {
/* Disconnect dasd_device structure from ccw_device structure. */
spin_lock_irqsave(get_ccwdev_lock(device->cdev), flags);
- device->cdev->dev.driver_data = NULL;
+ dev_set_drvdata(&device->cdev->dev, NULL);
spin_unlock_irqrestore(get_ccwdev_lock(device->cdev), flags);
/*
struct dasd_device *
dasd_device_from_cdev_locked(struct ccw_device *cdev)
{
- struct dasd_device *device = cdev->dev.driver_data;
+ struct dasd_device *device = dev_get_drvdata(&cdev->dev);
if (!device)
return ERR_PTR(-ENODEV);
*/
/*
+ * failfast controls the behaviour, if no path is available
+ */
+static ssize_t dasd_ff_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct dasd_devmap *devmap;
+ int ff_flag;
+
+ devmap = dasd_find_busid(dev_name(dev));
+ if (!IS_ERR(devmap))
+ ff_flag = (devmap->features & DASD_FEATURE_FAILFAST) != 0;
+ else
+ ff_flag = (DASD_FEATURE_DEFAULT & DASD_FEATURE_FAILFAST) != 0;
+ return snprintf(buf, PAGE_SIZE, ff_flag ? "1\n" : "0\n");
+}
+
+static ssize_t dasd_ff_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct dasd_devmap *devmap;
+ int val;
+ char *endp;
+
+ devmap = dasd_devmap_from_cdev(to_ccwdev(dev));
+ if (IS_ERR(devmap))
+ return PTR_ERR(devmap);
+
+ val = simple_strtoul(buf, &endp, 0);
+ if (((endp + 1) < (buf + count)) || (val > 1))
+ return -EINVAL;
+
+ spin_lock(&dasd_devmap_lock);
+ if (val)
+ devmap->features |= DASD_FEATURE_FAILFAST;
+ else
+ devmap->features &= ~DASD_FEATURE_FAILFAST;
+ if (devmap->device)
+ devmap->device->features = devmap->features;
+ spin_unlock(&dasd_devmap_lock);
+ return count;
+}
+
+static DEVICE_ATTR(failfast, 0644, dasd_ff_show, dasd_ff_store);
+
+/*
* readonly controls the readonly status of a dasd
*/
static ssize_t
struct dasd_devmap *devmap;
int ro_flag;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap))
ro_flag = (devmap->features & DASD_FEATURE_READONLY) != 0;
else
struct dasd_devmap *devmap;
int erplog;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap))
erplog = (devmap->features & DASD_FEATURE_ERPLOG) != 0;
else
struct dasd_devmap *devmap;
int use_diag;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap))
use_diag = (devmap->features & DASD_FEATURE_USEDIAG) != 0;
else
struct dasd_devmap *devmap;
int alias;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
spin_lock(&dasd_devmap_lock);
if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
spin_unlock(&dasd_devmap_lock);
struct dasd_devmap *devmap;
char *vendor;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
spin_lock(&dasd_devmap_lock);
if (!IS_ERR(devmap) && strlen(devmap->uid.vendor) > 0)
vendor = devmap->uid.vendor;
char ua_string[3];
struct dasd_uid *uid;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
spin_lock(&dasd_devmap_lock);
if (IS_ERR(devmap) || strlen(devmap->uid.vendor) == 0) {
spin_unlock(&dasd_devmap_lock);
struct dasd_devmap *devmap;
int eer_flag;
- devmap = dasd_find_busid(dev->bus_id);
+ devmap = dasd_find_busid(dev_name(dev));
if (!IS_ERR(devmap) && devmap->device)
eer_flag = dasd_eer_enabled(devmap->device);
else
&dev_attr_use_diag.attr,
&dev_attr_eer_enabled.attr,
&dev_attr_erplog.attr,
+ &dev_attr_failfast.attr,
NULL,
};
{
struct dasd_devmap *devmap;
- devmap = dasd_find_busid(cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&cdev->dev));
if (IS_ERR(devmap))
return PTR_ERR(devmap);
spin_lock(&dasd_devmap_lock);
{
struct dasd_devmap *devmap;
- devmap = dasd_find_busid(cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&cdev->dev));
if (IS_ERR(devmap))
return PTR_ERR(devmap);
{
struct dasd_devmap *devmap;
- devmap = dasd_find_busid(cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&cdev->dev));
if (IS_ERR(devmap))
return PTR_ERR(devmap);
{
struct dasd_devmap *devmap;
- devmap = dasd_find_busid(cdev->dev.bus_id);
+ devmap = dasd_find_busid(dev_name(&cdev->dev));
if (IS_ERR(devmap))
return PTR_ERR(devmap);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff