[Linux1394-cvslog] rev 698 - trunk

[SVN U. <dm...@li...>]

Author: dmaas
Date: 2002-12-16 00:13:38 -0500 (Mon, 16 Dec 2002)
New Revision: 698

Modified:
   trunk/raw1394.c
   trunk/raw1394.h
Log:
rawiso update:
- add a raw1394 ioctl RAW1394_ISO_QUEUE_ACTIVITY to force a RAWISO_ACTIVITY
  event into the queue. Needed for libraw1394 to wake itself up.


Modified: trunk/raw1394.c
==============================================================================
--- trunk/raw1394.c	(original)
+++ trunk/raw1394.c	2002-12-16 16:49:21.000000000 -0500
@@ -2015,43 +2015,48 @@
 	return 0;
 }
 
+/* put a RAWISO_ACTIVITY event in the queue, if one isn't there already */
+static void queue_rawiso_event(struct file_info *fi)
+{
+	unsigned long flags;
+	
+	spin_lock_irqsave(&fi->reqlists_lock, flags);
+
+	/* only one ISO activity event may be in the queue */
+	if(!__rawiso_event_in_queue(fi)) {
+		struct pending_request *req = __alloc_pending_request(SLAB_ATOMIC);
+
+		if(req) {
+			req->file_info = fi;
+			req->req.type = RAW1394_REQ_RAWISO_ACTIVITY;
+			req->req.generation = get_hpsb_generation(fi->host);
+			__queue_complete_req(req);
+		} else {
+			/* on allocation failure, signal an overflow */
+			if(fi->iso_handle) {
+				atomic_inc(&fi->iso_handle->overflows);
+			}
+		}
+	}
+	spin_unlock_irqrestore(&fi->reqlists_lock, flags);
+}
+
 static void rawiso_activity_cb(struct hpsb_iso *iso)
 {
-	unsigned long host_flags;
+	unsigned long flags;
         struct list_head *lh;
         struct host_info *hi;
 
-        spin_lock_irqsave(&host_info_lock, host_flags);
+        spin_lock_irqsave(&host_info_lock, flags);
         hi = find_host_info(iso->host);
 	
 	if (hi != NULL) {
 		list_for_each(lh, &hi->file_info_list) {
-			unsigned long reqlist_flags;
-			struct file_info *fi = list_entry(lh, struct file_info, list);
-			
-			spin_lock_irqsave(&fi->reqlists_lock, reqlist_flags);
-
-			/* only one ISO activity event may be in the queue */
-			if(!__rawiso_event_in_queue(fi)) {
-				struct pending_request *req = __alloc_pending_request(SLAB_ATOMIC);
-
-				if(req) {
-					req->file_info = fi;
-					req->req.type = RAW1394_REQ_RAWISO_ACTIVITY;
-					req->req.generation = get_hpsb_generation(iso->host);
-					__queue_complete_req(req);
-				} else {
-					/* on allocation failure, signal an overflow */
-					if(fi->iso_handle) {
-						atomic_inc(&fi->iso_handle->overflows);
-					}
-				}
-			}
-			spin_unlock_irqrestore(&fi->reqlists_lock, reqlist_flags);
+			queue_rawiso_event(list_entry(lh, struct file_info, list));
 		}
 	}
 	
-	spin_unlock_irqrestore(&host_info_lock, host_flags);
+	spin_unlock_irqrestore(&host_info_lock, flags);
 }
 
 /* helper function - gather all the kernel iso status bits for returning to user-space */
@@ -2191,6 +2196,10 @@
 		case RAW1394_ISO_SHUTDOWN:
 			raw1394_iso_shutdown(fi);
 			return 0;
+
+		case RAW1394_ISO_QUEUE_ACTIVITY:
+			queue_rawiso_event(fi);
+			return 0;
 		}
 		break;
 	case RAW1394_ISO_XMIT:
@@ -2215,6 +2224,10 @@
 		case RAW1394_ISO_SHUTDOWN:
 			raw1394_iso_shutdown(fi);
 			return 0;
+
+		case RAW1394_ISO_QUEUE_ACTIVITY:
+			queue_rawiso_event(fi);
+			return 0;
 		}
 		break;
 	default:

Modified: trunk/raw1394.h
==============================================================================
--- trunk/raw1394.h	(original)
+++ trunk/raw1394.h	2002-12-16 16:49:21.000000000 -0500
@@ -127,6 +127,7 @@
 #define RAW1394_ISO_GET_STATUS       5  /* arg: raw1394_iso_status* */
 #define RAW1394_ISO_PRODUCE_CONSUME  6  /* arg: int, # of packets */
 #define RAW1394_ISO_SHUTDOWN         7
+#define RAW1394_ISO_QUEUE_ACTIVITY   9
 
 /* per-packet metadata embedded in the ringbuffer */
 /* must be identical to hpsb_iso_packet_info in iso.h! */