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Diffstat (limited to 'drivers/message/fusion/mptctl.c')
-rw-r--r--drivers/message/fusion/mptctl.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index fe10cc0fe18..9b64e07400d 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -136,6 +136,12 @@ static void mptctl_free_tm_flags(MPT_ADAPTER *ioc);
*/
static int mptctl_ioc_reset(MPT_ADAPTER *ioc, int reset_phase);
+/*
+ * Event Handler function
+ */
+static int mptctl_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
+struct fasync_struct *async_queue=NULL;
+
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* Scatter gather list (SGL) sizes and limits...
@@ -472,6 +478,69 @@ mptctl_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
}
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
+/* ASYNC Event Notification Support */
+static int
+mptctl_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
+{
+ u8 event;
+
+ event = le32_to_cpu(pEvReply->Event) & 0xFF;
+
+ dctlprintk(("%s() called\n", __FUNCTION__));
+ if(async_queue == NULL)
+ return 1;
+
+ /* Raise SIGIO for persistent events.
+ * TODO - this define is not in MPI spec yet,
+ * but they plan to set it to 0x21
+ */
+ if (event == 0x21 ) {
+ ioc->aen_event_read_flag=1;
+ dctlprintk(("Raised SIGIO to application\n"));
+ devtprintk(("Raised SIGIO to application\n"));
+ kill_fasync(&async_queue, SIGIO, POLL_IN);
+ return 1;
+ }
+
+ /* This flag is set after SIGIO was raised, and
+ * remains set until the application has read
+ * the event log via ioctl=MPTEVENTREPORT
+ */
+ if(ioc->aen_event_read_flag)
+ return 1;
+
+ /* Signal only for the events that are
+ * requested for by the application
+ */
+ if (ioc->events && (ioc->eventTypes & ( 1 << event))) {
+ ioc->aen_event_read_flag=1;
+ dctlprintk(("Raised SIGIO to application\n"));
+ devtprintk(("Raised SIGIO to application\n"));
+ kill_fasync(&async_queue, SIGIO, POLL_IN);
+ }
+ return 1;
+}
+
+static int
+mptctl_fasync(int fd, struct file *filep, int mode)
+{
+ MPT_ADAPTER *ioc;
+
+ list_for_each_entry(ioc, &ioc_list, list)
+ ioc->aen_event_read_flag=0;
+
+ dctlprintk(("%s() called\n", __FUNCTION__));
+ return fasync_helper(fd, filep, mode, &async_queue);
+}
+
+static int
+mptctl_release(struct inode *inode, struct file *filep)
+{
+ dctlprintk(("%s() called\n", __FUNCTION__));
+ return fasync_helper(-1, filep, 0, &async_queue);
+}
+
+/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
* MPT ioctl handler
* cmd - specify the particular IOCTL command to be issued
@@ -1603,6 +1672,9 @@ mptctl_eventreport (unsigned long arg)
if ((max < 1) || !ioc->events)
return -ENODATA;
+ /* reset this flag so SIGIO can restart */
+ ioc->aen_event_read_flag=0;
+
/* Copy the data from kernel memory to user memory
*/
numBytes = max * sizeof(MPT_IOCTL_EVENTS);
@@ -2649,6 +2721,8 @@ mptctl_hp_targetinfo(unsigned long arg)
static struct file_operations mptctl_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
+ .release = mptctl_release,
+ .fasync = mptctl_fasync,
.unlocked_ioctl = mptctl_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = compat_mpctl_ioctl,
@@ -2893,6 +2967,11 @@ static int __init mptctl_init(void)
/* FIXME! */
}
+ if (mpt_event_register(mptctl_id, mptctl_event_process) == 0) {
+ devtprintk((KERN_INFO MYNAM
+ ": Registered for IOC event notifications\n"));
+ }
+
return 0;
out_fail: