---

yaml --- r: 47388 b: refs/heads/master c: a2cfe81 h: refs/heads/master v: v3
git-mirror · Feb 9, 2007 · f15c8b6 · f15c8b6
1 parent 5a267c0
commit f15c8b6
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Showing 2 changed files with 40 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 382a6652e91b34d5480cfc0ed840c196650493d4
+refs/heads/master: a2cfe81a59eea45a3f9afb4f652f7619982eac62
diff --git a/trunk/drivers/ata/sata_nv.c b/trunk/drivers/ata/sata_nv.c
@@ -512,22 +512,47 @@ static void nv_adma_register_mode(struct ata_port *ap)
 {
 	struct nv_adma_port_priv *pp = ap->private_data;
 	void __iomem *mmio = pp->ctl_block;
-	u16 tmp;
+	u16 tmp, status;
+	int count = 0;
 
 	if (pp->flags & NV_ADMA_PORT_REGISTER_MODE)
 		return;
 
+	status = readw(mmio + NV_ADMA_STAT);
+	while(!(status & NV_ADMA_STAT_IDLE) && count < 20) {
+		ndelay(50);
+		status = readw(mmio + NV_ADMA_STAT);
+		count++;
+	}
+	if(count == 20)
+		ata_port_printk(ap, KERN_WARNING,
+			"timeout waiting for ADMA IDLE, stat=0x%hx\n",
+			status);
+
 	tmp = readw(mmio + NV_ADMA_CTL);
 	writew(tmp & ~NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
 
+	count = 0;
+	status = readw(mmio + NV_ADMA_STAT);
+	while(!(status & NV_ADMA_STAT_LEGACY) && count < 20) {
+		ndelay(50);
+		status = readw(mmio + NV_ADMA_STAT);
+		count++;
+	}
+	if(count == 20)
+		ata_port_printk(ap, KERN_WARNING,
+			 "timeout waiting for ADMA LEGACY, stat=0x%hx\n",
+			 status);
+
 	pp->flags |= NV_ADMA_PORT_REGISTER_MODE;
 }
 
 static void nv_adma_mode(struct ata_port *ap)
 {
 	struct nv_adma_port_priv *pp = ap->private_data;
 	void __iomem *mmio = pp->ctl_block;
-	u16 tmp;
+	u16 tmp, status;
+	int count = 0;
 
 	if (!(pp->flags & NV_ADMA_PORT_REGISTER_MODE))
 		return;
@@ -537,6 +562,18 @@ static void nv_adma_mode(struct ata_port *ap)
 	tmp = readw(mmio + NV_ADMA_CTL);
 	writew(tmp | NV_ADMA_CTL_GO, mmio + NV_ADMA_CTL);
 
+	status = readw(mmio + NV_ADMA_STAT);
+	while(((status & NV_ADMA_STAT_LEGACY) ||
+	      !(status & NV_ADMA_STAT_IDLE)) && count < 20) {
+		ndelay(50);
+		status = readw(mmio + NV_ADMA_STAT);
+		count++;
+	}
+	if(count == 20)
+		ata_port_printk(ap, KERN_WARNING,
+			"timeout waiting for ADMA LEGACY clear and IDLE, stat=0x%hx\n",
+			status);
+
 	pp->flags &= ~NV_ADMA_PORT_REGISTER_MODE;
 }