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| author | Joe Handzik <joseph.t.handzik@beardog.cce.hp.com> | 2011-08-08 11:40:17 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-08-08 11:40:17 +0200 |
| commit | f963d270cb7bbb8eeb57901d02b22a493e664fd2 (patch) | |
| tree | 24c3c13c3c82391b670b84d1d2436cc1a58c8dbb | |
| parent | 13049537007dee73a76f0a30fcbc24d02c6fa9e4 (diff) | |
| download | kernel_samsung_smdk4412-f963d270cb7bbb8eeb57901d02b22a493e664fd2.zip kernel_samsung_smdk4412-f963d270cb7bbb8eeb57901d02b22a493e664fd2.tar.gz kernel_samsung_smdk4412-f963d270cb7bbb8eeb57901d02b22a493e664fd2.tar.bz2 | |
cciss: add transport mode attribute to sys
Signed-off-by: Joseph Handzik <joseph.t.handzik@beardog.cce.hp.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-pci-devices-cciss | 7 | ||||
| -rw-r--r-- | drivers/block/cciss.c | 13 |
2 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss index f5bb0a3..53d99ed 100644 --- a/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss +++ b/Documentation/ABI/testing/sysfs-bus-pci-devices-cciss @@ -71,3 +71,10 @@ Description: Value of 1 indicates the controller can honor the reset_devices a dump device, as kdump requires resetting the device in order to work reliably. +Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode +Date: July 2011 +Kernel Version: 3.0 +Contact: iss_storagedev@hp.com +Description: Value of "simple" indicates that the controller has been placed + in "simple mode". Value of "performant" indicates that the + controller has been placed in "performant mode". diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 61f0b5b..6da7ede 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -641,6 +641,18 @@ static ssize_t host_store_rescan(struct device *dev, } static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); +static ssize_t host_show_transport_mode(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ctlr_info *h = to_hba(dev); + + return snprintf(buf, 20, "%s\n", + h->transMethod & CFGTBL_Trans_Performant ? + "performant" : "simple"); +} +static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); + static ssize_t dev_show_unique_id(struct device *dev, struct device_attribute *attr, char *buf) @@ -813,6 +825,7 @@ static DEVICE_ATTR(usage_count, S_IRUGO, cciss_show_usage_count, NULL); static struct attribute *cciss_host_attrs[] = { &dev_attr_rescan.attr, &dev_attr_resettable.attr, + &dev_attr_transport_mode.attr, NULL }; |