From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stephen M. Cameron" Subject: [PATCH 17/41] hpsa: add hp_ssd_smart_path_enabled sysfs attribute Date: Wed, 15 Jan 2014 16:37:45 -0600 Message-ID: <20140115223745.5061.50133.stgit@beardog.cce.hp.com> References: <20140115223354.5061.50276.stgit@beardog.cce.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from g4t0015.houston.hp.com ([15.201.24.18]:45647 "EHLO g4t0015.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751789AbaAOVhv (ORCPT ); Wed, 15 Jan 2014 16:37:51 -0500 In-Reply-To: <20140115223354.5061.50276.stgit@beardog.cce.hp.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: jbottomley@parallels.com Cc: stephenmcameron@gmail.com, mikem@beardog.cce.hp.com, matthew.gates@hp.com, linux-scsi@vger.kernel.org, scott.teel@hp.com From: Scott Teel Signed-off-by: Scott Teel Acked-by: Stephen M. Cameron --- drivers/scsi/hpsa.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index f88bb73..39500d6 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -508,10 +508,34 @@ static ssize_t unique_id_show(struct device *dev, sn[12], sn[13], sn[14], sn[15]); } +static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ctlr_info *h; + struct scsi_device *sdev; + struct hpsa_scsi_dev_t *hdev; + unsigned long flags; + int offload_enabled; + + sdev = to_scsi_device(dev); + h = sdev_to_hba(sdev); + spin_lock_irqsave(&h->lock, flags); + hdev = sdev->hostdata; + if (!hdev) { + spin_unlock_irqrestore(&h->lock, flags); + return -ENODEV; + } + offload_enabled = hdev->offload_enabled; + spin_unlock_irqrestore(&h->lock, flags); + return snprintf(buf, 20, "%d\n", offload_enabled); +} + static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); +static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, + host_show_hp_ssd_smart_path_enabled, NULL); static DEVICE_ATTR(firmware_revision, S_IRUGO, host_show_firmware_revision, NULL); static DEVICE_ATTR(commands_outstanding, S_IRUGO, @@ -525,6 +549,7 @@ static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, &dev_attr_lunid, &dev_attr_unique_id, + &dev_attr_hp_ssd_smart_path_enabled, NULL, };