From 367d380b54b3fbd3d64d6b8a47ff8468c0c77718 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B8ren=20Schmidt?= <sos@FreeBSD.org>
Date: Fri, 30 Jan 2004 19:16:08 +0000
Subject: [PATCH] Be more robust in the probe. We dont want to get into a loop
 with reinitting when we try to identify devices. If they dont interrupt on
 identify we retry once. If this fails we simply ignore that device.

---
 sys/dev/ata/ata-all.c   | 21 ++++++++++-----------
 sys/dev/ata/ata-queue.c | 41 ++++++++++++++++++++++++++++-------------
 2 files changed, 38 insertions(+), 24 deletions(-)

diff --git a/sys/dev/ata/ata-all.c b/sys/dev/ata/ata-all.c
index d23c3d9e588e..bd59faf2b44f 100644
--- a/sys/dev/ata/ata-all.c
+++ b/sys/dev/ata/ata-all.c
@@ -563,20 +563,19 @@ ata_getparam(struct ata_device *atadev, u_int8_t command)
     if (atadev->param) {
 	request = ata_alloc_request(); 
 	if (request) {
-	    request->device = atadev;
-	    request->u.ata.command = command;
-	    request->flags = (ATA_R_READ | ATA_R_IMMEDIATE | ATA_R_QUIET);
-	    request->data = (caddr_t)atadev->param;
-	    request->timeout = 2;
-	    request->retries = 3;
-	    request->bytecount = sizeof(struct ata_params);
-	    request->transfersize = DEV_BSIZE;
-	    while (request->retries > 0 ) {
+	    int retries = 2;
+	    while (retries-- > 0) {
+		request->device = atadev;
+		request->timeout = 5;
+		request->retries = -1;
+		request->u.ata.command = command;
+		request->flags = (ATA_R_READ | ATA_R_IMMEDIATE);
+		request->data = (caddr_t)atadev->param;
+		request->bytecount = sizeof(struct ata_params);
+		request->transfersize = DEV_BSIZE;
 		ata_queue_request(request);
 		if (!(error = request->result))
 		    break;
-		request->retries--;
-		request->flags |= ATA_R_REQUEUE;
 	    }
 	    ata_free_request(request);
 	}
diff --git a/sys/dev/ata/ata-queue.c b/sys/dev/ata/ata-queue.c
index 5a28351cd887..ac5375ec6da8 100644
--- a/sys/dev/ata/ata-queue.c
+++ b/sys/dev/ata/ata-queue.c
@@ -234,23 +234,38 @@ ata_completed(void *context, int dummy)
     ATA_DEBUG_RQ(request, "completed called");
 
     if (request->flags & ATA_R_TIMEOUT) {
-	ata_reinit(channel);
 
-	/* if retries still permit, reinject this request */
-	if (request->retries-- > 0) {
-	    request->flags &= ~ATA_R_TIMEOUT;
-	    request->flags |= (ATA_R_IMMEDIATE | ATA_R_REQUEUE);
-	    ata_queue_request(request);
-	    return;
-	}
-
-	/* otherwise just finish with error */
-	else {
+	/* if negative retry count just give up and unlock channel HW */
+	if (request->retries < 0) {
 	    if (!(request->flags & ATA_R_QUIET))
 		ata_prtdev(request->device,
-			   "FAILURE - %s timed out\n",
+			   "FAILURE - %s no interrupt\n",
 			   ata_cmd2str(request));
 	    request->result = EIO;
+	    ATA_UNLOCK_CH(channel);
+	    channel->locking(channel, ATA_LF_UNLOCK);
+	}
+	else {
+
+	    /* reset controller and devices */
+	    ata_reinit(channel);
+
+	    /* if retries still permit, reinject this request */
+	    if (request->retries-- > 0) {
+		request->flags &= ~ATA_R_TIMEOUT;
+		request->flags |= (ATA_R_IMMEDIATE | ATA_R_REQUEUE);
+		ata_queue_request(request);
+		return;
+	    }
+
+	    /* otherwise just finish with error */
+	    else {
+		if (!(request->flags & ATA_R_QUIET))
+		    ata_prtdev(request->device,
+			       "FAILURE - %s timed out\n",
+			       ata_cmd2str(request));
+		request->result = EIO;
+	    }
 	}
     }
     else {
@@ -402,7 +417,7 @@ ata_timeout(struct ata_request *request)
     }
 
     /* report that we timed out */
-    if (!(request->flags & ATA_R_QUIET)) {
+    if (!(request->flags & ATA_R_QUIET) && request->retries > 0) {
 	ata_prtdev(request->device,
 		   "TIMEOUT - %s retrying (%d retr%s left)",
 		   ata_cmd2str(request), request->retries,