[PATCH] I2O: changed I2O API to create I2O messages in kernel memory

Changed the I2O API to create I2O messages first in kernel memory and then
transfer it at once over the PCI bus instead of sending each quad-word over
the PCI bus.

Signed-off-by: Markus Lidel <Markus.Lidel@shadowconnect.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

9 files changed, 964 insertions, 849 deletions

diff --git a/drivers/message/i2o/bus-osm.c b/drivers/message/i2o/bus-osm.c
index 151b228..ce039d3 100644
--- a/drivers/message/i2o/bus-osm.c
+++ b/drivers/message/i2o/bus-osm.c
@@ -39,18 +39,18 @@ static struct i2o_class_id i2o_bus_class_id[] = {
  */
 static int i2o_bus_scan(struct i2o_device *dev)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
 		return -ETIMEDOUT;
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BUS_SCAN << 24 | HOST_TID << 12 | dev->lct_data.
+			tid);
 
-	return i2o_msg_post_wait(dev->iop, m, 60);
+	return i2o_msg_post_wait(dev->iop, msg, 60);
 };
 
 /**
@@ -59,8 +59,9 @@ static int i2o_bus_scan(struct i2o_device *dev)
  *
  *	Returns count.
  */
-static ssize_t i2o_bus_store_scan(struct device *d, struct device_attribute *attr, const char *buf,
-				  size_t count)
+static ssize_t i2o_bus_store_scan(struct device *d,
+				  struct device_attribute *attr,
+				  const char *buf, size_t count)
 {
 	struct i2o_device *i2o_dev = to_i2o_device(d);
 	int rc;
diff --git a/drivers/message/i2o/device.c b/drivers/message/i2o/device.c
index 8eb50cd..002ae0e 100644
--- a/drivers/message/i2o/device.c
+++ b/drivers/message/i2o/device.c
@@ -35,18 +35,18 @@
 static inline int i2o_device_issue_claim(struct i2o_device *dev, u32 cmd,
 					 u32 type)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid, &msg->u.head[1]);
-	writel(type, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+		cpu_to_le32(cmd << 24 | HOST_TID << 12 | dev->lct_data.tid);
+	msg->body[0] = cpu_to_le32(type);
 
-	return i2o_msg_post_wait(dev->iop, m, 60);
+	return i2o_msg_post_wait(dev->iop, msg, 60);
 }
 
 /**
@@ -419,10 +419,9 @@ int i2o_device_parse_lct(struct i2o_controller *c)
  *	ResultCount, ErrorInfoSize, BlockStatus and BlockSize.
  */
 int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist,
-			  int oplen, void *reslist, int reslen)
+		   int oplen, void *reslist, int reslen)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	u32 *res32 = (u32 *) reslist;
 	u32 *restmp = (u32 *) reslist;
 	int len = 0;
@@ -437,26 +436,28 @@ int i2o_parm_issue(struct i2o_device *i2o_dev, int cmd, void *oplist,
 	if (i2o_dma_alloc(dev, &res, reslen, GFP_KERNEL))
 		return -ENOMEM;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY) {
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg)) {
 		i2o_dma_free(dev, &res);
-		return -ETIMEDOUT;
+		return PTR_ERR(msg);
 	}
 
 	i = 0;
-	writel(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid,
-	       &msg->u.head[1]);
-	writel(0, &msg->body[i++]);
-	writel(0x4C000000 | oplen, &msg->body[i++]);	/* OperationList */
-	memcpy_toio(&msg->body[i], oplist, oplen);
+	msg->u.head[1] =
+	    cpu_to_le32(cmd << 24 | HOST_TID << 12 | i2o_dev->lct_data.tid);
+	msg->body[i++] = cpu_to_le32(0x00000000);
+	msg->body[i++] = cpu_to_le32(0x4C000000 | oplen);	/* OperationList */
+	memcpy(&msg->body[i], oplist, oplen);
+
 	i += (oplen / 4 + (oplen % 4 ? 1 : 0));
-	writel(0xD0000000 | res.len, &msg->body[i++]);	/* ResultList */
-	writel(res.phys, &msg->body[i++]);
+	msg->body[i++] = cpu_to_le32(0xD0000000 | res.len);	/* ResultList */
+	msg->body[i++] = cpu_to_le32(res.phys);
 
-	writel(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) |
-	       SGL_OFFSET_5, &msg->u.head[0]);
+	msg->u.head[0] =
+	    cpu_to_le32(I2O_MESSAGE_SIZE(i + sizeof(struct i2o_message) / 4) |
+			SGL_OFFSET_5);
 
-	rc = i2o_msg_post_wait_mem(c, m, 10, &res);
+	rc = i2o_msg_post_wait_mem(c, msg, 10, &res);
 
 	/* This only looks like a memory leak - don't "fix" it. */
 	if (rc == -ETIMEDOUT)
diff --git a/drivers/message/i2o/exec-osm.c b/drivers/message/i2o/exec-osm.c
index 9c339a2..71a0933 100644
--- a/drivers/message/i2o/exec-osm.c
+++ b/drivers/message/i2o/exec-osm.c
@@ -114,13 +114,12 @@ static void i2o_exec_wait_free(struct i2o_exec_wait *wait)
  *	Returns 0 on success, negative error code on timeout or positive error
  *	code from reply.
  */
-int i2o_msg_post_wait_mem(struct i2o_controller *c, u32 m, unsigned long
-			  timeout, struct i2o_dma *dma)
+int i2o_msg_post_wait_mem(struct i2o_controller *c, struct i2o_message *msg,
+			  unsigned long timeout, struct i2o_dma *dma)
 {
 	DECLARE_WAIT_QUEUE_HEAD(wq);
 	struct i2o_exec_wait *wait;
 	static u32 tcntxt = 0x80000000;
-	struct i2o_message __iomem *msg = i2o_msg_in_to_virt(c, m);
 	int rc = 0;
 
 	wait = i2o_exec_wait_alloc();
@@ -138,15 +137,15 @@ int i2o_msg_post_wait_mem(struct i2o_controller *c, u32 m, unsigned long
 	 * We will only use transaction contexts >= 0x80000000 for POST WAIT,
 	 * so we could find a POST WAIT reply easier in the reply handler.
 	 */
-	writel(i2o_exec_driver.context, &msg->u.s.icntxt);
+	msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
 	wait->tcntxt = tcntxt++;
-	writel(wait->tcntxt, &msg->u.s.tcntxt);
+	msg->u.s.tcntxt = cpu_to_le32(wait->tcntxt);
 
 	/*
 	 * Post the message to the controller. At some point later it will
 	 * return. If we time out before it returns then complete will be zero.
 	 */
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	if (!wait->complete) {
 		wait->wq = &wq;
@@ -266,7 +265,8 @@ static int i2o_msg_post_wait_complete(struct i2o_controller *c, u32 m,
  *
  *	Returns number of bytes printed into buffer.
  */
-static ssize_t i2o_exec_show_vendor_id(struct device *d, struct device_attribute *attr, char *buf)
+static ssize_t i2o_exec_show_vendor_id(struct device *d,
+				       struct device_attribute *attr, char *buf)
 {
 	struct i2o_device *dev = to_i2o_device(d);
 	u16 id;
@@ -286,7 +286,9 @@ static ssize_t i2o_exec_show_vendor_id(struct device *d, struct device_attribute
  *
  *	Returns number of bytes printed into buffer.
  */
-static ssize_t i2o_exec_show_product_id(struct device *d, struct device_attribute *attr, char *buf)
+static ssize_t i2o_exec_show_product_id(struct device *d,
+					struct device_attribute *attr,
+					char *buf)
 {
 	struct i2o_device *dev = to_i2o_device(d);
 	u16 id;
@@ -385,23 +387,22 @@ static int i2o_exec_reply(struct i2o_controller *c, u32 m,
 	u32 context;
 
 	if (le32_to_cpu(msg->u.head[0]) & MSG_FAIL) {
+		struct i2o_message __iomem *pmsg;
+		u32 pm;
+
 		/*
 		 * If Fail bit is set we must take the transaction context of
 		 * the preserved message to find the right request again.
 		 */
-		struct i2o_message __iomem *pmsg;
-		u32 pm;
 
 		pm = le32_to_cpu(msg->body[3]);
-
 		pmsg = i2o_msg_in_to_virt(c, pm);
+		context = readl(&pmsg->u.s.tcntxt);
 
 		i2o_report_status(KERN_INFO, "i2o_core", msg);
 
-		context = readl(&pmsg->u.s.tcntxt);
-
 		/* Release the preserved msg */
-		i2o_msg_nop(c, pm);
+		i2o_msg_nop_mfa(c, pm);
 	} else
 		context = le32_to_cpu(msg->u.s.tcntxt);
 
@@ -462,25 +463,26 @@ static void i2o_exec_event(struct i2o_event *evt)
  */
 int i2o_exec_lct_get(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	int i = 0;
 	int rc = -EAGAIN;
 
 	for (i = 1; i <= I2O_LCT_GET_TRIES; i++) {
-		m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-		if (m == I2O_QUEUE_EMPTY)
-			return -ETIMEDOUT;
-
-		writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
-		writel(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 | ADAPTER_TID,
-		       &msg->u.head[1]);
-		writel(0xffffffff, &msg->body[0]);
-		writel(0x00000000, &msg->body[1]);
-		writel(0xd0000000 | c->dlct.len, &msg->body[2]);
-		writel(c->dlct.phys, &msg->body[3]);
-
-		rc = i2o_msg_post_wait(c, m, I2O_TIMEOUT_LCT_GET);
+		msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+		if (IS_ERR(msg))
+			return PTR_ERR(msg);
+
+		msg->u.head[0] =
+		    cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
+		msg->u.head[1] =
+		    cpu_to_le32(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 |
+				ADAPTER_TID);
+		msg->body[0] = cpu_to_le32(0xffffffff);
+		msg->body[1] = cpu_to_le32(0x00000000);
+		msg->body[2] = cpu_to_le32(0xd0000000 | c->dlct.len);
+		msg->body[3] = cpu_to_le32(c->dlct.phys);
+
+		rc = i2o_msg_post_wait(c, msg, I2O_TIMEOUT_LCT_GET);
 		if (rc < 0)
 			break;
 
@@ -506,29 +508,28 @@ static int i2o_exec_lct_notify(struct i2o_controller *c, u32 change_ind)
 {
 	i2o_status_block *sb = c->status_block.virt;
 	struct device *dev;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
 	dev = &c->pdev->dev;
 
 	if (i2o_dma_realloc(dev, &c->dlct, sb->expected_lct_size, GFP_KERNEL))
 		return -ENOMEM;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
-
-	writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
-	writel(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_exec_driver.context, &msg->u.s.icntxt);
-	writel(0, &msg->u.s.tcntxt);	/* FIXME */
-	writel(0xffffffff, &msg->body[0]);
-	writel(change_ind, &msg->body[1]);
-	writel(0xd0000000 | c->dlct.len, &msg->body[2]);
-	writel(c->dlct.phys, &msg->body[3]);
-
-	i2o_msg_post(c, m);
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
+
+	msg->u.head[0] = cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
+	msg->u.head[1] = cpu_to_le32(I2O_CMD_LCT_NOTIFY << 24 | HOST_TID << 12 |
+				     ADAPTER_TID);
+	msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(0x00000000);
+	msg->body[0] = cpu_to_le32(0xffffffff);
+	msg->body[1] = cpu_to_le32(change_ind);
+	msg->body[2] = cpu_to_le32(0xd0000000 | c->dlct.len);
+	msg->body[3] = cpu_to_le32(c->dlct.phys);
+
+	i2o_msg_post(c, msg);
 
 	return 0;
 };
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index f283b5b..2bd15c7 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -130,20 +130,20 @@ static int i2o_block_remove(struct device *dev)
  */
 static int i2o_block_device_flush(struct i2o_device *dev)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BLOCK_CFLUSH << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
-	writel(60 << 16, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BLOCK_CFLUSH << 24 | HOST_TID << 12 | dev->
+			lct_data.tid);
+	msg->body[0] = cpu_to_le32(60 << 16);
 	osm_debug("Flushing...\n");
 
-	return i2o_msg_post_wait(dev->iop, m, 60);
+	return i2o_msg_post_wait(dev->iop, msg, 60);
 };
 
 /**
@@ -181,21 +181,21 @@ static int i2o_block_issue_flush(request_queue_t * queue, struct gendisk *disk,
  */
 static int i2o_block_device_mount(struct i2o_device *dev, u32 media_id)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
-
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
-
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BLOCK_MMOUNT << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
-	writel(-1, &msg->body[0]);
-	writel(0, &msg->body[1]);
+	struct i2o_message *msg;
+
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
+
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BLOCK_MMOUNT << 24 | HOST_TID << 12 | dev->
+			lct_data.tid);
+	msg->body[0] = cpu_to_le32(-1);
+	msg->body[1] = cpu_to_le32(0x00000000);
 	osm_debug("Mounting...\n");
 
-	return i2o_msg_post_wait(dev->iop, m, 2);
+	return i2o_msg_post_wait(dev->iop, msg, 2);
 };
 
 /**
@@ -210,20 +210,20 @@ static int i2o_block_device_mount(struct i2o_device *dev, u32 media_id)
  */
 static int i2o_block_device_lock(struct i2o_device *dev, u32 media_id)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg) == I2O_QUEUE_EMPTY)
+		return PTR_ERR(msg);
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BLOCK_MLOCK << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
-	writel(-1, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BLOCK_MLOCK << 24 | HOST_TID << 12 | dev->
+			lct_data.tid);
+	msg->body[0] = cpu_to_le32(-1);
 	osm_debug("Locking...\n");
 
-	return i2o_msg_post_wait(dev->iop, m, 2);
+	return i2o_msg_post_wait(dev->iop, msg, 2);
 };
 
 /**
@@ -238,20 +238,20 @@ static int i2o_block_device_lock(struct i2o_device *dev, u32 media_id)
  */
 static int i2o_block_device_unlock(struct i2o_device *dev, u32 media_id)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(dev->iop, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(dev->iop, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BLOCK_MUNLOCK << 24 | HOST_TID << 12 | dev->lct_data.tid,
-	       &msg->u.head[1]);
-	writel(media_id, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BLOCK_MUNLOCK << 24 | HOST_TID << 12 | dev->
+			lct_data.tid);
+	msg->body[0] = cpu_to_le32(media_id);
 	osm_debug("Unlocking...\n");
 
-	return i2o_msg_post_wait(dev->iop, m, 2);
+	return i2o_msg_post_wait(dev->iop, msg, 2);
 };
 
 /**
@@ -267,21 +267,21 @@ static int i2o_block_device_power(struct i2o_block_device *dev, u8 op)
 {
 	struct i2o_device *i2o_dev = dev->i2o_dev;
 	struct i2o_controller *c = i2o_dev->iop;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	int rc;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_BLOCK_POWER << 24 | HOST_TID << 12 | i2o_dev->lct_data.
-	       tid, &msg->u.head[1]);
-	writel(op << 24, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_BLOCK_POWER << 24 | HOST_TID << 12 | i2o_dev->
+			lct_data.tid);
+	msg->body[0] = cpu_to_le32(op << 24);
 	osm_debug("Power...\n");
 
-	rc = i2o_msg_post_wait(c, m, 60);
+	rc = i2o_msg_post_wait(c, msg, 60);
 	if (!rc)
 		dev->power = op;
 
@@ -331,7 +331,7 @@ static inline void i2o_block_request_free(struct i2o_block_request *ireq)
  */
 static inline int i2o_block_sglist_alloc(struct i2o_controller *c,
 					 struct i2o_block_request *ireq,
-					 u32 __iomem ** mptr)
+					 u32 ** mptr)
 {
 	int nents;
 	enum dma_data_direction direction;
@@ -745,10 +745,9 @@ static int i2o_block_transfer(struct request *req)
 	struct i2o_block_device *dev = req->rq_disk->private_data;
 	struct i2o_controller *c;
 	int tid = dev->i2o_dev->lct_data.tid;
-	struct i2o_message __iomem *msg;
-	u32 __iomem *mptr;
+	struct i2o_message *msg;
+	u32 *mptr;
 	struct i2o_block_request *ireq = req->special;
-	u32 m;
 	u32 tcntxt;
 	u32 sgl_offset = SGL_OFFSET_8;
 	u32 ctl_flags = 0x00000000;
@@ -763,9 +762,9 @@ static int i2o_block_transfer(struct request *req)
 
 	c = dev->i2o_dev->iop;
 
-	m = i2o_msg_get(c, &msg);
-	if (m == I2O_QUEUE_EMPTY) {
-		rc = -EBUSY;
+	msg = i2o_msg_get(c);
+	if (IS_ERR(msg)) {
+		rc = PTR_ERR(msg);
 		goto exit;
 	}
 
@@ -775,8 +774,8 @@ static int i2o_block_transfer(struct request *req)
 		goto nop_msg;
 	}
 
-	writel(i2o_block_driver.context, &msg->u.s.icntxt);
-	writel(tcntxt, &msg->u.s.tcntxt);
+	msg->u.s.icntxt = cpu_to_le32(i2o_block_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(tcntxt);
 
 	mptr = &msg->body[0];
 
@@ -834,11 +833,11 @@ static int i2o_block_transfer(struct request *req)
 
 		sgl_offset = SGL_OFFSET_12;
 
-		writel(I2O_CMD_PRIVATE << 24 | HOST_TID << 12 | tid,
-		       &msg->u.head[1]);
+		msg->u.head[1] =
+		    cpu_to_le32(I2O_CMD_PRIVATE << 24 | HOST_TID << 12 | tid);
 
-		writel(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC, mptr++);
-		writel(tid, mptr++);
+		*mptr++ = cpu_to_le32(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC);
+		*mptr++ = cpu_to_le32(tid);
 
 		/*
 		 * ENABLE_DISCONNECT
@@ -853,22 +852,24 @@ static int i2o_block_transfer(struct request *req)
 			scsi_flags = 0xa0a0000a;
 		}
 
-		writel(scsi_flags, mptr++);
+		*mptr++ = cpu_to_le32(scsi_flags);
 
 		*((u32 *) & cmd[2]) = cpu_to_be32(req->sector * hwsec);
 		*((u16 *) & cmd[7]) = cpu_to_be16(req->nr_sectors * hwsec);
 
-		memcpy_toio(mptr, cmd, 10);
+		memcpy(mptr, cmd, 10);
 		mptr += 4;
-		writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++);
+		*mptr++ = cpu_to_le32(req->nr_sectors << KERNEL_SECTOR_SHIFT);
 	} else
 #endif
 	{
-		writel(cmd | HOST_TID << 12 | tid, &msg->u.head[1]);
-		writel(ctl_flags, mptr++);
-		writel(req->nr_sectors << KERNEL_SECTOR_SHIFT, mptr++);
-		writel((u32) (req->sector << KERNEL_SECTOR_SHIFT), mptr++);
-		writel(req->sector >> (32 - KERNEL_SECTOR_SHIFT), mptr++);
+		msg->u.head[1] = cpu_to_le32(cmd | HOST_TID << 12 | tid);
+		*mptr++ = cpu_to_le32(ctl_flags);
+		*mptr++ = cpu_to_le32(req->nr_sectors << KERNEL_SECTOR_SHIFT);
+		*mptr++ =
+		    cpu_to_le32((u32) (req->sector << KERNEL_SECTOR_SHIFT));
+		*mptr++ =
+		    cpu_to_le32(req->sector >> (32 - KERNEL_SECTOR_SHIFT));
 	}
 
 	if (!i2o_block_sglist_alloc(c, ireq, &mptr)) {
@@ -876,13 +877,13 @@ static int i2o_block_transfer(struct request *req)
 		goto context_remove;
 	}
 
-	writel(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) |
-	       sgl_offset, &msg->u.head[0]);
+	msg->u.head[0] =
+	    cpu_to_le32(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | sgl_offset);
 
 	list_add_tail(&ireq->queue, &dev->open_queue);
 	dev->open_queue_depth++;
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	return 0;
 
@@ -890,7 +891,7 @@ static int i2o_block_transfer(struct request *req)
 	i2o_cntxt_list_remove(c, req);
 
       nop_msg:
-	i2o_msg_nop(c, m);
+	i2o_msg_nop(c, msg);
 
       exit:
 	return rc;
diff --git a/drivers/message/i2o/i2o_config.c b/drivers/message/i2o/i2o_config.c
index 3c3a7ab..4fe73d6 100644
--- a/drivers/message/i2o/i2o_config.c
+++ b/drivers/message/i2o/i2o_config.c
@@ -230,8 +230,7 @@ static int i2o_cfg_swdl(unsigned long arg)
 	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
 	unsigned char maxfrag = 0, curfrag = 1;
 	struct i2o_dma buffer;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	unsigned int status = 0, swlen = 0, fragsize = 8192;
 	struct i2o_controller *c;
 
@@ -257,31 +256,34 @@ static int i2o_cfg_swdl(unsigned long arg)
 	if (!c)
 		return -ENXIO;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -EBUSY;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
 	if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
-		i2o_msg_nop(c, m);
+		i2o_msg_nop(c, msg);
 		return -ENOMEM;
 	}
 
 	__copy_from_user(buffer.virt, kxfer.buf, fragsize);
 
-	writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
-	writel(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_config_driver.context, &msg->u.head[2]);
-	writel(0, &msg->u.head[3]);
-	writel((((u32) kxfer.flags) << 24) | (((u32) kxfer.sw_type) << 16) |
-	       (((u32) maxfrag) << 8) | (((u32) curfrag)), &msg->body[0]);
-	writel(swlen, &msg->body[1]);
-	writel(kxfer.sw_id, &msg->body[2]);
-	writel(0xD0000000 | fragsize, &msg->body[3]);
-	writel(buffer.phys, &msg->body[4]);
+	msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
+	msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+	msg->u.head[3] = cpu_to_le32(0);
+	msg->body[0] =
+	    cpu_to_le32((((u32) kxfer.flags) << 24) | (((u32) kxfer.
+							sw_type) << 16) |
+			(((u32) maxfrag) << 8) | (((u32) curfrag)));
+	msg->body[1] = cpu_to_le32(swlen);
+	msg->body[2] = cpu_to_le32(kxfer.sw_id);
+	msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+	msg->body[4] = cpu_to_le32(buffer.phys);
 
 	osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
-	status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+	status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
 
 	if (status != -ETIMEDOUT)
 		i2o_dma_free(&c->pdev->dev, &buffer);
@@ -302,8 +304,7 @@ static int i2o_cfg_swul(unsigned long arg)
 	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
 	unsigned char maxfrag = 0, curfrag = 1;
 	struct i2o_dma buffer;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	unsigned int status = 0, swlen = 0, fragsize = 8192;
 	struct i2o_controller *c;
 	int ret = 0;
@@ -330,30 +331,30 @@ static int i2o_cfg_swul(unsigned long arg)
 	if (!c)
 		return -ENXIO;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -EBUSY;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
 	if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
-		i2o_msg_nop(c, m);
+		i2o_msg_nop(c, msg);
 		return -ENOMEM;
 	}
 
-	writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_7, &msg->u.head[0]);
-	writel(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_config_driver.context, &msg->u.head[2]);
-	writel(0, &msg->u.head[3]);
-	writel((u32) kxfer.flags << 24 | (u32) kxfer.
-	       sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag,
-	       &msg->body[0]);
-	writel(swlen, &msg->body[1]);
-	writel(kxfer.sw_id, &msg->body[2]);
-	writel(0xD0000000 | fragsize, &msg->body[3]);
-	writel(buffer.phys, &msg->body[4]);
+	msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID);
+	msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+	msg->u.head[3] = cpu_to_le32(0);
+	msg->body[0] =
+	    cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.
+			sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag);
+	msg->body[1] = cpu_to_le32(swlen);
+	msg->body[2] = cpu_to_le32(kxfer.sw_id);
+	msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
+	msg->body[4] = cpu_to_le32(buffer.phys);
 
 	osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
-	status = i2o_msg_post_wait_mem(c, m, 60, &buffer);
+	status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
 
 	if (status != I2O_POST_WAIT_OK) {
 		if (status != -ETIMEDOUT)
@@ -380,8 +381,7 @@ static int i2o_cfg_swdel(unsigned long arg)
 	struct i2o_controller *c;
 	struct i2o_sw_xfer kxfer;
 	struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	unsigned int swlen;
 	int token;
 
@@ -395,21 +395,21 @@ static int i2o_cfg_swdel(unsigned long arg)
 	if (!c)
 		return -ENXIO;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -EBUSY;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_config_driver.context, &msg->u.head[2]);
-	writel(0, &msg->u.head[3]);
-	writel((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16,
-	       &msg->body[0]);
-	writel(swlen, &msg->body[1]);
-	writel(kxfer.sw_id, &msg->body[2]);
+	msg->u.head[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID);
+	msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+	msg->u.head[3] = cpu_to_le32(0);
+	msg->body[0] =
+	    cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16);
+	msg->body[1] = cpu_to_le32(swlen);
+	msg->body[2] = cpu_to_le32(kxfer.sw_id);
 
-	token = i2o_msg_post_wait(c, m, 10);
+	token = i2o_msg_post_wait(c, msg, 10);
 
 	if (token != I2O_POST_WAIT_OK) {
 		osm_info("swdel failed, DetailedStatus = %d\n", token);
@@ -423,25 +423,24 @@ static int i2o_cfg_validate(unsigned long arg)
 {
 	int token;
 	int iop = (int)arg;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	struct i2o_controller *c;
 
 	c = i2o_find_iop(iop);
 	if (!c)
 		return -ENXIO;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -EBUSY;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop,
-	       &msg->u.head[1]);
-	writel(i2o_config_driver.context, &msg->u.head[2]);
-	writel(0, &msg->u.head[3]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop);
+	msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+	msg->u.head[3] = cpu_to_le32(0);
 
-	token = i2o_msg_post_wait(c, m, 10);
+	token = i2o_msg_post_wait(c, msg, 10);
 
 	if (token != I2O_POST_WAIT_OK) {
 		osm_info("Can't validate configuration, ErrorStatus = %d\n",
@@ -454,8 +453,7 @@ static int i2o_cfg_validate(unsigned long arg)
 
 static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
 	struct i2o_evt_id kdesc;
 	struct i2o_controller *c;
@@ -474,18 +472,19 @@ static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
 	if (!d)
 		return -ENODEV;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -EBUSY;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | kdesc.tid,
-	       &msg->u.head[1]);
-	writel(i2o_config_driver.context, &msg->u.head[2]);
-	writel(i2o_cntxt_list_add(c, fp->private_data), &msg->u.head[3]);
-	writel(kdesc.evt_mask, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 |
+			kdesc.tid);
+	msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
+	msg->u.head[3] = cpu_to_le32(i2o_cntxt_list_add(c, fp->private_data));
+	msg->body[0] = cpu_to_le32(kdesc.evt_mask);
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	return 0;
 }
@@ -537,7 +536,6 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
 	u32 sg_index = 0;
 	i2o_status_block *sb;
 	struct i2o_message *msg;
-	u32 m;
 	unsigned int iop;
 
 	cmd = (struct i2o_cmd_passthru32 __user *)arg;
@@ -553,7 +551,7 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
 		return -ENXIO;
 	}
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
 
 	sb = c->status_block.virt;
 
@@ -595,8 +593,8 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
 
 	sg_offset = (msg->u.head[0] >> 4) & 0x0f;
 
-	writel(i2o_config_driver.context, &msg->u.s.icntxt);
-	writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+	msg->u.s.icntxt = cpu_to_le32(i2o_config_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, reply));
 
 	memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
 	if (sg_offset) {
@@ -662,7 +660,7 @@ static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
 		}
 	}
 
-	rcode = i2o_msg_post_wait(c, m, 60);
+	rcode = i2o_msg_post_wait(c, msg, 60);
 	if (rcode)
 		goto sg_list_cleanup;
 
@@ -780,8 +778,7 @@ static int i2o_cfg_passthru(unsigned long arg)
 	u32 i = 0;
 	void *p = NULL;
 	i2o_status_block *sb;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	unsigned int iop;
 
 	if (get_user(iop, &cmd->iop) || get_user(user_msg, &cmd->msg))
@@ -793,7 +790,7 @@ static int i2o_cfg_passthru(unsigned long arg)
 		return -ENXIO;
 	}
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
 
 	sb = c->status_block.virt;
 
@@ -830,8 +827,8 @@ static int i2o_cfg_passthru(unsigned long arg)
 
 	sg_offset = (msg->u.head[0] >> 4) & 0x0f;
 
-	writel(i2o_config_driver.context, &msg->u.s.icntxt);
-	writel(i2o_cntxt_list_add(c, reply), &msg->u.s.tcntxt);
+	msg->u.s.icntxt = cpu_to_le32(i2o_config_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, reply));
 
 	memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
 	if (sg_offset) {
@@ -894,7 +891,7 @@ static int i2o_cfg_passthru(unsigned long arg)
 		}
 	}
 
-	rcode = i2o_msg_post_wait(c, m, 60);
+	rcode = i2o_msg_post_wait(c, msg, 60);
 	if (rcode)
 		goto sg_list_cleanup;
 
diff --git a/drivers/message/i2o/i2o_scsi.c b/drivers/message/i2o/i2o_scsi.c
index 9f1744c..7a784fd 100644
--- a/drivers/message/i2o/i2o_scsi.c
+++ b/drivers/message/i2o/i2o_scsi.c
@@ -510,8 +510,7 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 	struct i2o_controller *c;
 	struct i2o_device *i2o_dev;
 	int tid;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	/*
 	 * ENABLE_DISCONNECT
 	 * SIMPLE_TAG
@@ -519,7 +518,7 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 	 */
 	u32 scsi_flags = 0x20a00000;
 	u32 sgl_offset;
-	u32 __iomem *mptr;
+	u32 *mptr;
 	u32 cmd = I2O_CMD_SCSI_EXEC << 24;
 	int rc = 0;
 
@@ -576,8 +575,8 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 	 *      throw it back to the scsi layer
 	 */
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY) {
+	msg = i2o_msg_get(c);
+	if (IS_ERR(msg)) {
 		rc = SCSI_MLQUEUE_HOST_BUSY;
 		goto exit;
 	}
@@ -617,16 +616,16 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 		if (sgl_offset == SGL_OFFSET_10)
 			sgl_offset = SGL_OFFSET_12;
 		cmd = I2O_CMD_PRIVATE << 24;
-		writel(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC, mptr++);
-		writel(adpt_flags | tid, mptr++);
+		*mptr++ = cpu_to_le32(I2O_VENDOR_DPT << 16 | I2O_CMD_SCSI_EXEC);
+		*mptr++ = cpu_to_le32(adpt_flags | tid);
 	}
 #endif
 
-	writel(cmd | HOST_TID << 12 | tid, &msg->u.head[1]);
-	writel(i2o_scsi_driver.context, &msg->u.s.icntxt);
+	msg->u.head[1] = cpu_to_le32(cmd | HOST_TID << 12 | tid);
+	msg->u.s.icntxt = cpu_to_le32(i2o_scsi_driver.context);
 
 	/* We want the SCSI control block back */
-	writel(i2o_cntxt_list_add(c, SCpnt), &msg->u.s.tcntxt);
+	msg->u.s.tcntxt = cpu_to_le32(i2o_cntxt_list_add(c, SCpnt));
 
 	/* LSI_920_PCI_QUIRK
 	 *
@@ -649,15 +648,15 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 	   }
 	 */
 
-	writel(scsi_flags | SCpnt->cmd_len, mptr++);
+	*mptr++ = cpu_to_le32(scsi_flags | SCpnt->cmd_len);
 
 	/* Write SCSI command into the message - always 16 byte block */
-	memcpy_toio(mptr, SCpnt->cmnd, 16);
+	memcpy(mptr, SCpnt->cmnd, 16);
 	mptr += 4;
 
 	if (sgl_offset != SGL_OFFSET_0) {
 		/* write size of data addressed by SGL */
-		writel(SCpnt->request_bufflen, mptr++);
+		*mptr++ = cpu_to_le32(SCpnt->request_bufflen);
 
 		/* Now fill in the SGList and command */
 		if (SCpnt->use_sg) {
@@ -676,11 +675,11 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 	}
 
 	/* Stick the headers on */
-	writel(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | sgl_offset,
-	       &msg->u.head[0]);
+	msg->u.head[0] =
+	    cpu_to_le32(I2O_MESSAGE_SIZE(mptr - &msg->u.head[0]) | sgl_offset);
 
 	/* Queue the message */
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	osm_debug("Issued %ld\n", SCpnt->serial_number);
 
@@ -688,7 +687,7 @@ static int i2o_scsi_queuecommand(struct scsi_cmnd *SCpnt,
 
       nomem:
 	rc = -ENOMEM;
-	i2o_msg_nop(c, m);
+	i2o_msg_nop(c, msg);
 
       exit:
 	return rc;
@@ -709,8 +708,7 @@ static int i2o_scsi_abort(struct scsi_cmnd *SCpnt)
 {
 	struct i2o_device *i2o_dev;
 	struct i2o_controller *c;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	int tid;
 	int status = FAILED;
 
@@ -720,16 +718,16 @@ static int i2o_scsi_abort(struct scsi_cmnd *SCpnt)
 	c = i2o_dev->iop;
 	tid = i2o_dev->lct_data.tid;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
 		return SCSI_MLQUEUE_HOST_BUSY;
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_SCSI_ABORT << 24 | HOST_TID << 12 | tid,
-	       &msg->u.head[1]);
-	writel(i2o_cntxt_list_get_ptr(c, SCpnt), &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SCSI_ABORT << 24 | HOST_TID << 12 | tid);
+	msg->body[0] = cpu_to_le32(i2o_cntxt_list_get_ptr(c, SCpnt));
 
-	if (i2o_msg_post_wait(c, m, I2O_TIMEOUT_SCSI_SCB_ABORT))
+	if (i2o_msg_post_wait(c, msg, I2O_TIMEOUT_SCSI_SCB_ABORT))
 		status = SUCCESS;
 
 	return status;
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index 4eb5325..f86abb4 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -47,27 +47,6 @@ static struct i2o_dma i2o_systab;
 static int i2o_hrt_get(struct i2o_controller *c);
 
 /**
- *	i2o_msg_nop - Returns a message which is not used
- *	@c: I2O controller from which the message was created
- *	@m: message which should be returned
- *
- *	If you fetch a message via i2o_msg_get, and can't use it, you must
- *	return the message with this function. Otherwise the message frame
- *	is lost.
- */
-void i2o_msg_nop(struct i2o_controller *c, u32 m)
-{
-	struct i2o_message __iomem *msg = i2o_msg_in_to_virt(c, m);
-
-	writel(THREE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(0, &msg->u.head[2]);
-	writel(0, &msg->u.head[3]);
-	i2o_msg_post(c, m);
-};
-
-/**
  *	i2o_msg_get_wait - obtain an I2O message from the IOP
  *	@c: I2O controller
  *	@msg: pointer to a I2O message pointer
@@ -81,22 +60,21 @@ void i2o_msg_nop(struct i2o_controller *c, u32 m)
  *	address from the read port (see the i2o spec). If no message is
  *	available returns I2O_QUEUE_EMPTY and msg is leaved untouched.
  */
-u32 i2o_msg_get_wait(struct i2o_controller *c,
-		     struct i2o_message __iomem ** msg, int wait)
+struct i2o_message *i2o_msg_get_wait(struct i2o_controller *c, int wait)
 {
 	unsigned long timeout = jiffies + wait * HZ;
-	u32 m;
+	struct i2o_message *msg;
 
-	while ((m = i2o_msg_get(c, msg)) == I2O_QUEUE_EMPTY) {
+	while (IS_ERR(msg = i2o_msg_get(c))) {
 		if (time_after(jiffies, timeout)) {
 			osm_debug("%s: Timeout waiting for message frame.\n",
 				  c->name);
-			return I2O_QUEUE_EMPTY;
+			return ERR_PTR(-ETIMEDOUT);
 		}
 		schedule_timeout_uninterruptible(1);
 	}
 
-	return m;
+	return msg;
 };
 
 #if BITS_PER_LONG == 64
@@ -301,8 +279,7 @@ struct i2o_device *i2o_iop_find_device(struct i2o_controller *c, u16 tid)
  */
 static int i2o_iop_quiesce(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	i2o_status_block *sb = c->status_block.virt;
 	int rc;
 
@@ -313,16 +290,17 @@ static int i2o_iop_quiesce(struct i2o_controller *c)
 	    (sb->iop_state != ADAPTER_STATE_OPERATIONAL))
 		return 0;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_SYS_QUIESCE << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SYS_QUIESCE << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
 
 	/* Long timeout needed for quiesce if lots of devices */
-	if ((rc = i2o_msg_post_wait(c, m, 240)))
+	if ((rc = i2o_msg_post_wait(c, msg, 240)))
 		osm_info("%s: Unable to quiesce (status=%#x).\n", c->name, -rc);
 	else
 		osm_debug("%s: Quiesced.\n", c->name);
@@ -342,8 +320,7 @@ static int i2o_iop_quiesce(struct i2o_controller *c)
  */
 static int i2o_iop_enable(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	i2o_status_block *sb = c->status_block.virt;
 	int rc;
 
@@ -353,16 +330,17 @@ static int i2o_iop_enable(struct i2o_controller *c)
 	if (sb->iop_state != ADAPTER_STATE_READY)
 		return -EINVAL;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_SYS_ENABLE << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SYS_ENABLE << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
 
 	/* How long of a timeout do we need? */
-	if ((rc = i2o_msg_post_wait(c, m, 240)))
+	if ((rc = i2o_msg_post_wait(c, msg, 240)))
 		osm_err("%s: Could not enable (status=%#x).\n", c->name, -rc);
 	else
 		osm_debug("%s: Enabled.\n", c->name);
@@ -413,22 +391,22 @@ static inline void i2o_iop_enable_all(void)
  */
 static int i2o_iop_clear(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	int rc;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
 	/* Quiesce all IOPs first */
 	i2o_iop_quiesce_all();
 
-	writel(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_ADAPTER_CLEAR << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_ADAPTER_CLEAR << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
 
-	if ((rc = i2o_msg_post_wait(c, m, 30)))
+	if ((rc = i2o_msg_post_wait(c, msg, 30)))
 		osm_info("%s: Unable to clear (status=%#x).\n", c->name, -rc);
 	else
 		osm_debug("%s: Cleared.\n", c->name);
@@ -446,13 +424,13 @@ static int i2o_iop_clear(struct i2o_controller *c)
  *	Clear and (re)initialize IOP's outbound queue and post the message
  *	frames to the IOP.
  *
- *	Returns 0 on success or a negative errno code on failure.
+ *	Returns 0 on success or negative error code on failure.
  */
 static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
 {
-	volatile u8 *status = c->status.virt;
 	u32 m;
-	struct i2o_message __iomem *msg;
+	volatile u8 *status = c->status.virt;
+	struct i2o_message *msg;
 	ulong timeout;
 	int i;
 
@@ -460,23 +438,24 @@ static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
 
 	memset(c->status.virt, 0, 4);
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
-
-	writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6, &msg->u.head[0]);
-	writel(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_exec_driver.context, &msg->u.s.icntxt);
-	writel(0x00000000, &msg->u.s.tcntxt);
-	writel(PAGE_SIZE, &msg->body[0]);
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
+
+	msg->u.head[0] = cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_6);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_OUTBOUND_INIT << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
+	msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(0x00000000);
+	msg->body[0] = cpu_to_le32(PAGE_SIZE);
 	/* Outbound msg frame size in words and Initcode */
-	writel(I2O_OUTBOUND_MSG_FRAME_SIZE << 16 | 0x80, &msg->body[1]);
-	writel(0xd0000004, &msg->body[2]);
-	writel(i2o_dma_low(c->status.phys), &msg->body[3]);
-	writel(i2o_dma_high(c->status.phys), &msg->body[4]);
+	msg->body[1] = cpu_to_le32(I2O_OUTBOUND_MSG_FRAME_SIZE << 16 | 0x80);
+	msg->body[2] = cpu_to_le32(0xd0000004);
+	msg->body[3] = cpu_to_le32(i2o_dma_low(c->status.phys));
+	msg->body[4] = cpu_to_le32(i2o_dma_high(c->status.phys));
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	timeout = jiffies + I2O_TIMEOUT_INIT_OUTBOUND_QUEUE * HZ;
 	while (*status <= I2O_CMD_IN_PROGRESS) {
@@ -511,34 +490,34 @@ static int i2o_iop_init_outbound_queue(struct i2o_controller *c)
 static int i2o_iop_reset(struct i2o_controller *c)
 {
 	volatile u8 *status = c->status.virt;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	unsigned long timeout;
 	i2o_status_block *sb = c->status_block.virt;
 	int rc = 0;
 
 	osm_debug("%s: Resetting controller\n", c->name);
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
 	memset(c->status_block.virt, 0, 8);
 
 	/* Quiesce all IOPs first */
 	i2o_iop_quiesce_all();
 
-	writel(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_ADAPTER_RESET << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_exec_driver.context, &msg->u.s.icntxt);
-	writel(0, &msg->u.s.tcntxt);	//FIXME: use reasonable transaction context
-	writel(0, &msg->body[0]);
-	writel(0, &msg->body[1]);
-	writel(i2o_dma_low(c->status.phys), &msg->body[2]);
-	writel(i2o_dma_high(c->status.phys), &msg->body[3]);
+	msg->u.head[0] = cpu_to_le32(EIGHT_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_ADAPTER_RESET << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
+	msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(0x00000000);
+	msg->body[0] = cpu_to_le32(0x00000000);
+	msg->body[1] = cpu_to_le32(0x00000000);
+	msg->body[2] = cpu_to_le32(i2o_dma_low(c->status.phys));
+	msg->body[3] = cpu_to_le32(i2o_dma_high(c->status.phys));
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	/* Wait for a reply */
 	timeout = jiffies + I2O_TIMEOUT_RESET * HZ;
@@ -567,18 +546,15 @@ static int i2o_iop_reset(struct i2o_controller *c)
 		osm_debug("%s: Reset in progress, waiting for reboot...\n",
 			  c->name);
 
-		m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_RESET);
-		while (m == I2O_QUEUE_EMPTY) {
+		while (IS_ERR(msg = i2o_msg_get_wait(c, I2O_TIMEOUT_RESET))) {
 			if (time_after(jiffies, timeout)) {
 				osm_err("%s: IOP reset timeout.\n", c->name);
-				rc = -ETIMEDOUT;
+				rc = PTR_ERR(msg);
 				goto exit;
 			}
 			schedule_timeout_uninterruptible(1);
-
-			m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_RESET);
 		}
-		i2o_msg_nop(c, m);
+		i2o_msg_nop(c, msg);
 
 		/* from here all quiesce commands are safe */
 		c->no_quiesce = 0;
@@ -686,8 +662,7 @@ static int i2o_iop_activate(struct i2o_controller *c)
  */
 static int i2o_iop_systab_set(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	i2o_status_block *sb = c->status_block.virt;
 	struct device *dev = &c->pdev->dev;
 	struct resource *root;
@@ -735,20 +710,21 @@ static int i2o_iop_systab_set(struct i2o_controller *c)
 		}
 	}
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
 	i2o_systab.phys = dma_map_single(dev, i2o_systab.virt, i2o_systab.len,
 					 PCI_DMA_TODEVICE);
 	if (!i2o_systab.phys) {
-		i2o_msg_nop(c, m);
+		i2o_msg_nop(c, msg);
 		return -ENOMEM;
 	}
 
-	writel(I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6, &msg->u.head[0]);
-	writel(I2O_CMD_SYS_TAB_SET << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
+	msg->u.head[0] = cpu_to_le32(I2O_MESSAGE_SIZE(12) | SGL_OFFSET_6);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_SYS_TAB_SET << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
 
 	/*
 	 * Provide three SGL-elements:
@@ -760,16 +736,16 @@ static int i2o_iop_systab_set(struct i2o_controller *c)
 	 * same table to everyone. We have to go remap it for them all
 	 */
 
-	writel(c->unit + 2, &msg->body[0]);
-	writel(0, &msg->body[1]);
-	writel(0x54000000 | i2o_systab.len, &msg->body[2]);
-	writel(i2o_systab.phys, &msg->body[3]);
-	writel(0x54000000 | sb->current_mem_size, &msg->body[4]);
-	writel(sb->current_mem_base, &msg->body[5]);
-	writel(0xd4000000 | sb->current_io_size, &msg->body[6]);
-	writel(sb->current_io_base, &msg->body[6]);
+	msg->body[0] = cpu_to_le32(c->unit + 2);
+	msg->body[1] = cpu_to_le32(0x00000000);
+	msg->body[2] = cpu_to_le32(0x54000000 | i2o_systab.len);
+	msg->body[3] = cpu_to_le32(i2o_systab.phys);
+	msg->body[4] = cpu_to_le32(0x54000000 | sb->current_mem_size);
+	msg->body[5] = cpu_to_le32(sb->current_mem_base);
+	msg->body[6] = cpu_to_le32(0xd4000000 | sb->current_io_size);
+	msg->body[6] = cpu_to_le32(sb->current_io_base);
 
-	rc = i2o_msg_post_wait(c, m, 120);
+	rc = i2o_msg_post_wait(c, msg, 120);
 
 	dma_unmap_single(dev, i2o_systab.phys, i2o_systab.len,
 			 PCI_DMA_TODEVICE);
@@ -952,30 +928,30 @@ static int i2o_parse_hrt(struct i2o_controller *c)
  */
 int i2o_status_get(struct i2o_controller *c)
 {
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 	volatile u8 *status_block;
 	unsigned long timeout;
 
 	status_block = (u8 *) c->status_block.virt;
 	memset(c->status_block.virt, 0, sizeof(i2o_status_block));
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(NINE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_STATUS_GET << 24 | HOST_TID << 12 | ADAPTER_TID,
-	       &msg->u.head[1]);
-	writel(i2o_exec_driver.context, &msg->u.s.icntxt);
-	writel(0, &msg->u.s.tcntxt);	// FIXME: use resonable transaction context
-	writel(0, &msg->body[0]);
-	writel(0, &msg->body[1]);
-	writel(i2o_dma_low(c->status_block.phys), &msg->body[2]);
-	writel(i2o_dma_high(c->status_block.phys), &msg->body[3]);
-	writel(sizeof(i2o_status_block), &msg->body[4]);	/* always 88 bytes */
+	msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_STATUS_GET << 24 | HOST_TID << 12 |
+			ADAPTER_TID);
+	msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
+	msg->u.s.tcntxt = cpu_to_le32(0x00000000);
+	msg->body[0] = cpu_to_le32(0x00000000);
+	msg->body[1] = cpu_to_le32(0x00000000);
+	msg->body[2] = cpu_to_le32(i2o_dma_low(c->status_block.phys));
+	msg->body[3] = cpu_to_le32(i2o_dma_high(c->status_block.phys));
+	msg->body[4] = cpu_to_le32(sizeof(i2o_status_block));	/* always 88 bytes */
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	/* Wait for a reply */
 	timeout = jiffies + I2O_TIMEOUT_STATUS_GET * HZ;
@@ -1013,20 +989,20 @@ static int i2o_hrt_get(struct i2o_controller *c)
 	struct device *dev = &c->pdev->dev;
 
 	for (i = 0; i < I2O_HRT_GET_TRIES; i++) {
-		struct i2o_message __iomem *msg;
-		u32 m;
+		struct i2o_message *msg;
 
-		m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-		if (m == I2O_QUEUE_EMPTY)
-			return -ETIMEDOUT;
+		msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+		if (IS_ERR(msg))
+			return PTR_ERR(msg);
 
-		writel(SIX_WORD_MSG_SIZE | SGL_OFFSET_4, &msg->u.head[0]);
-		writel(I2O_CMD_HRT_GET << 24 | HOST_TID << 12 | ADAPTER_TID,
-		       &msg->u.head[1]);
-		writel(0xd0000000 | c->hrt.len, &msg->body[0]);
-		writel(c->hrt.phys, &msg->body[1]);
+		msg->u.head[0] = cpu_to_le32(SIX_WORD_MSG_SIZE | SGL_OFFSET_4);
+		msg->u.head[1] =
+		    cpu_to_le32(I2O_CMD_HRT_GET << 24 | HOST_TID << 12 |
+				ADAPTER_TID);
+		msg->body[0] = cpu_to_le32(0xd0000000 | c->hrt.len);
+		msg->body[1] = cpu_to_le32(c->hrt.phys);
 
-		rc = i2o_msg_post_wait_mem(c, m, 20, &c->hrt);
+		rc = i2o_msg_post_wait_mem(c, msg, 20, &c->hrt);
 
 		if (rc < 0) {
 			osm_err("%s: Unable to get HRT (status=%#x)\n", c->name,
@@ -1056,6 +1032,7 @@ static int i2o_hrt_get(struct i2o_controller *c)
  */
 void i2o_iop_free(struct i2o_controller *c)
 {
+	i2o_pool_free(&c->in_msg);
 	kfree(c);
 };
 
@@ -1080,7 +1057,7 @@ static struct class *i2o_controller_class;
  *	i2o_iop_alloc - Allocate and initialize a i2o_controller struct
  *
  *	Allocate the necessary memory for a i2o_controller struct and
- *	initialize the lists.
+ *	initialize the lists and message mempool.
  *
  *	Returns a pointer to the I2O controller or a negative error code on
  *	failure.
@@ -1089,6 +1066,7 @@ struct i2o_controller *i2o_iop_alloc(void)
 {
 	static int unit = 0;	/* 0 and 1 are NULL IOP and Local Host */
 	struct i2o_controller *c;
+	char poolname[32];
 
 	c = kmalloc(sizeof(*c), GFP_KERNEL);
 	if (!c) {
@@ -1098,11 +1076,20 @@ struct i2o_controller *i2o_iop_alloc(void)
 	}
 	memset(c, 0, sizeof(*c));
 
+	c->unit = unit++;
+	sprintf(c->name, "iop%d", c->unit);
+
+	snprintf(poolname, sizeof(poolname), "i2o_%s_msg_inpool", c->name);
+	if (i2o_pool_alloc
+	    (&c->in_msg, poolname, I2O_INBOUND_MSG_FRAME_SIZE * 4,
+	     I2O_MSG_INPOOL_MIN)) {
+		kfree(c);
+		return ERR_PTR(-ENOMEM);
+	};
+
 	INIT_LIST_HEAD(&c->devices);
 	spin_lock_init(&c->lock);
 	init_MUTEX(&c->lct_lock);
-	c->unit = unit++;
-	sprintf(c->name, "iop%d", c->unit);
 
 	device_initialize(&c->device);
 
@@ -1199,28 +1186,27 @@ int i2o_iop_add(struct i2o_controller *c)
  *	is waited for, or expected. If you do not want further notifications,
  *	call the i2o_event_register again with a evt_mask of 0.
  *
- *	Returns 0 on success or -ETIMEDOUT if no message could be fetched for
- *	sending the request.
+ *	Returns 0 on success or negative error code on failure.
  */
 int i2o_event_register(struct i2o_device *dev, struct i2o_driver *drv,
 		       int tcntxt, u32 evt_mask)
 {
 	struct i2o_controller *c = dev->iop;
-	struct i2o_message __iomem *msg;
-	u32 m;
+	struct i2o_message *msg;
 
-	m = i2o_msg_get_wait(c, &msg, I2O_TIMEOUT_MESSAGE_GET);
-	if (m == I2O_QUEUE_EMPTY)
-		return -ETIMEDOUT;
+	msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
+	if (IS_ERR(msg))
+		return PTR_ERR(msg);
 
-	writel(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0, &msg->u.head[0]);
-	writel(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | dev->lct_data.
-	       tid, &msg->u.head[1]);
-	writel(drv->context, &msg->u.s.icntxt);
-	writel(tcntxt, &msg->u.s.tcntxt);
-	writel(evt_mask, &msg->body[0]);
+	msg->u.head[0] = cpu_to_le32(FIVE_WORD_MSG_SIZE | SGL_OFFSET_0);
+	msg->u.head[1] =
+	    cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 | dev->
+			lct_data.tid);
+	msg->u.s.icntxt = cpu_to_le32(drv->context);
+	msg->u.s.tcntxt = cpu_to_le32(tcntxt);
+	msg->body[0] = cpu_to_le32(evt_mask);
 
-	i2o_msg_post(c, m);
+	i2o_msg_post(c, msg);
 
 	return 0;
 };
diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c
index ee7075f..329d482 100644
--- a/drivers/message/i2o/pci.c
+++ b/drivers/message/i2o/pci.c
@@ -483,4 +483,5 @@ void __exit i2o_pci_exit(void)
 {
 	pci_unregister_driver(&i2o_pci_driver);
 };
+
 MODULE_DEVICE_TABLE(pci, i2o_pci_ids);
diff --git a/include/linux/i2o.h b/include/linux/i2o.h
index d79c8a4..9e359a9 100644
--- a/include/linux/i2o.h
+++ b/include/linux/i2o.h
@@ -30,6 +30,7 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>	/* work_struct */
+#include <linux/mempool.h>
 
 #include <asm/io.h>
 #include <asm/semaphore.h>	/* Needed for MUTEX init macros */
@@ -38,6 +39,355 @@
 #define I2O_QUEUE_EMPTY		0xffffffff
 
 /*
+ *	Cache strategies
+ */
+
+/*	The NULL strategy leaves everything up to the controller. This tends to be a
+ *	pessimal but functional choice.
+ */
+#define CACHE_NULL		0
+/*	Prefetch data when reading. We continually attempt to load the next 32 sectors
+ *	into the controller cache.
+ */
+#define CACHE_PREFETCH		1
+/*	Prefetch data when reading. We sometimes attempt to load the next 32 sectors
+ *	into the controller cache. When an I/O is less <= 8K we assume its probably
+ *	not sequential and don't prefetch (default)
+ */
+#define CACHE_SMARTFETCH	2
+/*	Data is written to the cache and then out on to the disk. The I/O must be
+ *	physically on the medium before the write is acknowledged (default without
+ *	NVRAM)
+ */
+#define CACHE_WRITETHROUGH	17
+/*	Data is written to the cache and then out on to the disk. The controller
+ *	is permitted to write back the cache any way it wants. (default if battery
+ *	backed NVRAM is present). It can be useful to set this for swap regardless of
+ *	battery state.
+ */
+#define CACHE_WRITEBACK		18
+/*	Optimise for under powered controllers, especially on RAID1 and RAID0. We
+ *	write large I/O's directly to disk bypassing the cache to avoid the extra
+ *	memory copy hits. Small writes are writeback cached
+ */
+#define CACHE_SMARTBACK		19
+/*	Optimise for under powered controllers, especially on RAID1 and RAID0. We
+ *	write large I/O's directly to disk bypassing the cache to avoid the extra
+ *	memory copy hits. Small writes are writethrough cached. Suitable for devices
+ *	lacking battery backup
+ */
+#define CACHE_SMARTTHROUGH	20
+
+/*
+ *	Ioctl structures
+ */
+
+#define 	BLKI2OGRSTRAT	_IOR('2', 1, int)
+#define 	BLKI2OGWSTRAT	_IOR('2', 2, int)
+#define 	BLKI2OSRSTRAT	_IOW('2', 3, int)
+#define 	BLKI2OSWSTRAT	_IOW('2', 4, int)
+
+/*
+ *	I2O Function codes
+ */
+
+/*
+ *	Executive Class
+ */
+#define	I2O_CMD_ADAPTER_ASSIGN		0xB3
+#define	I2O_CMD_ADAPTER_READ		0xB2
+#define	I2O_CMD_ADAPTER_RELEASE		0xB5
+#define	I2O_CMD_BIOS_INFO_SET		0xA5
+#define	I2O_CMD_BOOT_DEVICE_SET		0xA7
+#define	I2O_CMD_CONFIG_VALIDATE		0xBB
+#define	I2O_CMD_CONN_SETUP		0xCA
+#define	I2O_CMD_DDM_DESTROY		0xB1
+#define	I2O_CMD_DDM_ENABLE		0xD5
+#define	I2O_CMD_DDM_QUIESCE		0xC7
+#define	I2O_CMD_DDM_RESET		0xD9
+#define	I2O_CMD_DDM_SUSPEND		0xAF
+#define	I2O_CMD_DEVICE_ASSIGN		0xB7
+#define	I2O_CMD_DEVICE_RELEASE		0xB9
+#define	I2O_CMD_HRT_GET			0xA8
+#define	I2O_CMD_ADAPTER_CLEAR		0xBE
+#define	I2O_CMD_ADAPTER_CONNECT		0xC9
+#define	I2O_CMD_ADAPTER_RESET		0xBD
+#define	I2O_CMD_LCT_NOTIFY		0xA2
+#define	I2O_CMD_OUTBOUND_INIT		0xA1
+#define	I2O_CMD_PATH_ENABLE		0xD3
+#define	I2O_CMD_PATH_QUIESCE		0xC5
+#define	I2O_CMD_PATH_RESET		0xD7
+#define	I2O_CMD_STATIC_MF_CREATE	0xDD
+#define	I2O_CMD_STATIC_MF_RELEASE	0xDF
+#define	I2O_CMD_STATUS_GET		0xA0
+#define	I2O_CMD_SW_DOWNLOAD		0xA9
+#define	I2O_CMD_SW_UPLOAD		0xAB
+#define	I2O_CMD_SW_REMOVE		0xAD
+#define	I2O_CMD_SYS_ENABLE		0xD1
+#define	I2O_CMD_SYS_MODIFY		0xC1
+#define	I2O_CMD_SYS_QUIESCE		0xC3
+#define	I2O_CMD_SYS_TAB_SET		0xA3
+
+/*
+ * Utility Class
+ */
+#define I2O_CMD_UTIL_NOP		0x00
+#define I2O_CMD_UTIL_ABORT		0x01
+#define I2O_CMD_UTIL_CLAIM		0x09
+#define I2O_CMD_UTIL_RELEASE		0x0B
+#define I2O_CMD_UTIL_PARAMS_GET		0x06
+#define I2O_CMD_UTIL_PARAMS_SET		0x05
+#define I2O_CMD_UTIL_EVT_REGISTER	0x13
+#define I2O_CMD_UTIL_EVT_ACK		0x14
+#define I2O_CMD_UTIL_CONFIG_DIALOG	0x10
+#define I2O_CMD_UTIL_DEVICE_RESERVE	0x0D
+#define I2O_CMD_UTIL_DEVICE_RELEASE	0x0F
+#define I2O_CMD_UTIL_LOCK		0x17
+#define I2O_CMD_UTIL_LOCK_RELEASE	0x19
+#define I2O_CMD_UTIL_REPLY_FAULT_NOTIFY	0x15
+
+/*
+ * SCSI Host Bus Adapter Class
+ */
+#define I2O_CMD_SCSI_EXEC		0x81
+#define I2O_CMD_SCSI_ABORT		0x83
+#define I2O_CMD_SCSI_BUSRESET		0x27
+
+/*
+ * Bus Adapter Class
+ */
+#define I2O_CMD_BUS_ADAPTER_RESET	0x85
+#define I2O_CMD_BUS_RESET		0x87
+#define I2O_CMD_BUS_SCAN		0x89
+#define I2O_CMD_BUS_QUIESCE		0x8b
+
+/*
+ * Random Block Storage Class
+ */
+#define I2O_CMD_BLOCK_READ		0x30
+#define I2O_CMD_BLOCK_WRITE		0x31
+#define I2O_CMD_BLOCK_CFLUSH		0x37
+#define I2O_CMD_BLOCK_MLOCK		0x49
+#define I2O_CMD_BLOCK_MUNLOCK		0x4B
+#define I2O_CMD_BLOCK_MMOUNT		0x41
+#define I2O_CMD_BLOCK_MEJECT		0x43
+#define I2O_CMD_BLOCK_POWER		0x70
+
+#define I2O_CMD_PRIVATE			0xFF
+
+/* Command status values  */
+
+#define I2O_CMD_IN_PROGRESS	0x01
+#define I2O_CMD_REJECTED	0x02
+#define I2O_CMD_FAILED		0x03
+#define I2O_CMD_COMPLETED	0x04
+
+/* I2O API function return values */
+
+#define I2O_RTN_NO_ERROR			0
+#define I2O_RTN_NOT_INIT			1
+#define I2O_RTN_FREE_Q_EMPTY			2
+#define I2O_RTN_TCB_ERROR			3
+#define I2O_RTN_TRANSACTION_ERROR		4
+#define I2O_RTN_ADAPTER_ALREADY_INIT		5
+#define I2O_RTN_MALLOC_ERROR			6
+#define I2O_RTN_ADPTR_NOT_REGISTERED		7
+#define I2O_RTN_MSG_REPLY_TIMEOUT		8
+#define I2O_RTN_NO_STATUS			9
+#define I2O_RTN_NO_FIRM_VER			10
+#define	I2O_RTN_NO_LINK_SPEED			11
+
+/* Reply message status defines for all messages */
+
+#define I2O_REPLY_STATUS_SUCCESS                    	0x00
+#define I2O_REPLY_STATUS_ABORT_DIRTY                	0x01
+#define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER     	0x02
+#define	I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER		0x03
+#define	I2O_REPLY_STATUS_ERROR_DIRTY			0x04
+#define	I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER		0x05
+#define	I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER		0x06
+#define	I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY		0x08
+#define	I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER	0x09
+#define	I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER	0x0A
+#define	I2O_REPLY_STATUS_TRANSACTION_ERROR		0x0B
+#define	I2O_REPLY_STATUS_PROGRESS_REPORT		0x80
+
+/* Status codes and Error Information for Parameter functions */
+
+#define I2O_PARAMS_STATUS_SUCCESS		0x00
+#define I2O_PARAMS_STATUS_BAD_KEY_ABORT		0x01
+#define I2O_PARAMS_STATUS_BAD_KEY_CONTINUE   	0x02
+#define I2O_PARAMS_STATUS_BUFFER_FULL		0x03
+#define I2O_PARAMS_STATUS_BUFFER_TOO_SMALL	0x04
+#define I2O_PARAMS_STATUS_FIELD_UNREADABLE	0x05
+#define I2O_PARAMS_STATUS_FIELD_UNWRITEABLE	0x06
+#define I2O_PARAMS_STATUS_INSUFFICIENT_FIELDS	0x07
+#define I2O_PARAMS_STATUS_INVALID_GROUP_ID	0x08
+#define I2O_PARAMS_STATUS_INVALID_OPERATION	0x09
+#define I2O_PARAMS_STATUS_NO_KEY_FIELD		0x0A
+#define I2O_PARAMS_STATUS_NO_SUCH_FIELD		0x0B
+#define I2O_PARAMS_STATUS_NON_DYNAMIC_GROUP	0x0C
+#define I2O_PARAMS_STATUS_OPERATION_ERROR	0x0D
+#define I2O_PARAMS_STATUS_SCALAR_ERROR		0x0E
+#define I2O_PARAMS_STATUS_TABLE_ERROR		0x0F
+#define I2O_PARAMS_STATUS_WRONG_GROUP_TYPE	0x10
+
+/* DetailedStatusCode defines for Executive, DDM, Util and Transaction error
+ * messages: Table 3-2 Detailed Status Codes.*/
+
+#define I2O_DSC_SUCCESS                        0x0000
+#define I2O_DSC_BAD_KEY                        0x0002
+#define I2O_DSC_TCL_ERROR                      0x0003
+#define I2O_DSC_REPLY_BUFFER_FULL              0x0004
+#define I2O_DSC_NO_SUCH_PAGE                   0x0005
+#define I2O_DSC_INSUFFICIENT_RESOURCE_SOFT     0x0006
+#define I2O_DSC_INSUFFICIENT_RESOURCE_HARD     0x0007
+#define I2O_DSC_CHAIN_BUFFER_TOO_LARGE         0x0009
+#define I2O_DSC_UNSUPPORTED_FUNCTION           0x000A
+#define I2O_DSC_DEVICE_LOCKED                  0x000B
+#define I2O_DSC_DEVICE_RESET                   0x000C
+#define I2O_DSC_INAPPROPRIATE_FUNCTION         0x000D
+#define I2O_DSC_INVALID_INITIATOR_ADDRESS      0x000E
+#define I2O_DSC_INVALID_MESSAGE_FLAGS          0x000F
+#define I2O_DSC_INVALID_OFFSET                 0x0010
+#define I2O_DSC_INVALID_PARAMETER              0x0011
+#define I2O_DSC_INVALID_REQUEST                0x0012
+#define I2O_DSC_INVALID_TARGET_ADDRESS         0x0013
+#define I2O_DSC_MESSAGE_TOO_LARGE              0x0014
+#define I2O_DSC_MESSAGE_TOO_SMALL              0x0015
+#define I2O_DSC_MISSING_PARAMETER              0x0016
+#define I2O_DSC_TIMEOUT                        0x0017
+#define I2O_DSC_UNKNOWN_ERROR                  0x0018
+#define I2O_DSC_UNKNOWN_FUNCTION               0x0019
+#define I2O_DSC_UNSUPPORTED_VERSION            0x001A
+#define I2O_DSC_DEVICE_BUSY                    0x001B
+#define I2O_DSC_DEVICE_NOT_AVAILABLE           0x001C
+
+/* DetailedStatusCode defines for Block Storage Operation: Table 6-7 Detailed
+   Status Codes.*/
+
+#define I2O_BSA_DSC_SUCCESS               0x0000
+#define I2O_BSA_DSC_MEDIA_ERROR           0x0001
+#define I2O_BSA_DSC_ACCESS_ERROR          0x0002
+#define I2O_BSA_DSC_DEVICE_FAILURE        0x0003
+#define I2O_BSA_DSC_DEVICE_NOT_READY      0x0004
+#define I2O_BSA_DSC_MEDIA_NOT_PRESENT     0x0005
+#define I2O_BSA_DSC_MEDIA_LOCKED          0x0006
+#define I2O_BSA_DSC_MEDIA_FAILURE         0x0007
+#define I2O_BSA_DSC_PROTOCOL_FAILURE      0x0008
+#define I2O_BSA_DSC_BUS_FAILURE           0x0009
+#define I2O_BSA_DSC_ACCESS_VIOLATION      0x000A
+#define I2O_BSA_DSC_WRITE_PROTECTED       0x000B
+#define I2O_BSA_DSC_DEVICE_RESET          0x000C
+#define I2O_BSA_DSC_VOLUME_CHANGED        0x000D
+#define I2O_BSA_DSC_TIMEOUT               0x000E
+
+/* FailureStatusCodes, Table 3-3 Message Failure Codes */
+
+#define I2O_FSC_TRANSPORT_SERVICE_SUSPENDED             0x81
+#define I2O_FSC_TRANSPORT_SERVICE_TERMINATED            0x82
+#define I2O_FSC_TRANSPORT_CONGESTION                    0x83
+#define I2O_FSC_TRANSPORT_FAILURE                       0x84
+#define I2O_FSC_TRANSPORT_STATE_ERROR                   0x85
+#define I2O_FSC_TRANSPORT_TIME_OUT                      0x86
+#define I2O_FSC_TRANSPORT_ROUTING_FAILURE               0x87
+#define I2O_FSC_TRANSPORT_INVALID_VERSION               0x88
+#define I2O_FSC_TRANSPORT_INVALID_OFFSET                0x89
+#define I2O_FSC_TRANSPORT_INVALID_MSG_FLAGS             0x8A
+#define I2O_FSC_TRANSPORT_FRAME_TOO_SMALL               0x8B
+#define I2O_FSC_TRANSPORT_FRAME_TOO_LARGE               0x8C
+#define I2O_FSC_TRANSPORT_INVALID_TARGET_ID             0x8D
+#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_ID          0x8E
+#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_CONTEXT     0x8F
+#define I2O_FSC_TRANSPORT_UNKNOWN_FAILURE               0xFF
+
+/* Device Claim Types */
+#define	I2O_CLAIM_PRIMARY					0x01000000
+#define	I2O_CLAIM_MANAGEMENT					0x02000000
+#define	I2O_CLAIM_AUTHORIZED					0x03000000
+#define	I2O_CLAIM_SECONDARY					0x04000000
+
+/* Message header defines for VersionOffset */
+#define I2OVER15	0x0001
+#define I2OVER20	0x0002
+
+/* Default is 1.5 */
+#define I2OVERSION	I2OVER15
+
+#define SGL_OFFSET_0    I2OVERSION
+#define SGL_OFFSET_4    (0x0040 | I2OVERSION)
+#define SGL_OFFSET_5    (0x0050 | I2OVERSION)
+#define SGL_OFFSET_6    (0x0060 | I2OVERSION)
+#define SGL_OFFSET_7    (0x0070 | I2OVERSION)
+#define SGL_OFFSET_8    (0x0080 | I2OVERSION)
+#define SGL_OFFSET_9    (0x0090 | I2OVERSION)
+#define SGL_OFFSET_10   (0x00A0 | I2OVERSION)
+#define SGL_OFFSET_11   (0x00B0 | I2OVERSION)
+#define SGL_OFFSET_12   (0x00C0 | I2OVERSION)
+#define SGL_OFFSET(x)   (((x)<<4) | I2OVERSION)
+
+/* Transaction Reply Lists (TRL) Control Word structure */
+#define TRL_SINGLE_FIXED_LENGTH		0x00
+#define TRL_SINGLE_VARIABLE_LENGTH	0x40
+#define TRL_MULTIPLE_FIXED_LENGTH	0x80
+
+ /* msg header defines for MsgFlags */
+#define MSG_STATIC	0x0100
+#define MSG_64BIT_CNTXT	0x0200
+#define MSG_MULTI_TRANS	0x1000
+#define MSG_FAIL	0x2000
+#define MSG_FINAL	0x4000
+#define MSG_REPLY	0x8000
+
+ /* minimum size msg */
+#define THREE_WORD_MSG_SIZE	0x00030000
+#define FOUR_WORD_MSG_SIZE	0x00040000
+#define FIVE_WORD_MSG_SIZE	0x00050000
+#define SIX_WORD_MSG_SIZE	0x00060000
+#define SEVEN_WORD_MSG_SIZE	0x00070000
+#define EIGHT_WORD_MSG_SIZE	0x00080000
+#define NINE_WORD_MSG_SIZE	0x00090000
+#define TEN_WORD_MSG_SIZE	0x000A0000
+#define ELEVEN_WORD_MSG_SIZE	0x000B0000
+#define I2O_MESSAGE_SIZE(x)	((x)<<16)
+
+/* special TID assignments */
+#define ADAPTER_TID		0
+#define HOST_TID		1
+
+/* outbound queue defines */
+#define I2O_MAX_OUTBOUND_MSG_FRAMES	128
+#define I2O_OUTBOUND_MSG_FRAME_SIZE	128	/* in 32-bit words */
+
+/* inbound queue definitions */
+#define I2O_MSG_INPOOL_MIN		32
+#define I2O_INBOUND_MSG_FRAME_SIZE	128	/* in 32-bit words */
+
+#define I2O_POST_WAIT_OK	0
+#define I2O_POST_WAIT_TIMEOUT	-ETIMEDOUT
+
+#define I2O_CONTEXT_LIST_MIN_LENGTH	15
+#define I2O_CONTEXT_LIST_USED		0x01
+#define I2O_CONTEXT_LIST_DELETED	0x02
+
+/* timeouts */
+#define I2O_TIMEOUT_INIT_OUTBOUND_QUEUE	15
+#define I2O_TIMEOUT_MESSAGE_GET		5
+#define I2O_TIMEOUT_RESET		30
+#define I2O_TIMEOUT_STATUS_GET		5
+#define I2O_TIMEOUT_LCT_GET		360
+#define I2O_TIMEOUT_SCSI_SCB_ABORT	240
+
+/* retries */
+#define I2O_HRT_GET_TRIES		3
+#define I2O_LCT_GET_TRIES		3
+
+/* defines for max_sectors and max_phys_segments */
+#define I2O_MAX_SECTORS			1024
+#define I2O_MAX_SECTORS_LIMITED		256
+#define I2O_MAX_PHYS_SEGMENTS		MAX_PHYS_SEGMENTS
+
+/*
  *	Message structures
  */
 struct i2o_message {
@@ -58,6 +408,12 @@ struct i2o_message {
 	u32 body[0];
 };
 
+/* MFA and I2O message used by mempool */
+struct i2o_msg_mfa {
+	u32 mfa;		/* MFA returned by the controller */
+	struct i2o_message msg;	/* I2O message */
+};
+
 /*
  *	Each I2O device entity has one of these. There is one per device.
  */
@@ -130,6 +486,15 @@ struct i2o_dma {
 };
 
 /*
+ *	Contains slab cache and mempool information
+ */
+struct i2o_pool {
+	char *name;
+	kmem_cache_t *slab;
+	mempool_t *mempool;
+};
+
+/*
  *	Contains IO mapped address information
  */
 struct i2o_io {
@@ -174,8 +539,6 @@ struct i2o_controller {
 	void __iomem *irq_status;	/* Interrupt status register address */
 	void __iomem *irq_mask;	/* Interrupt mask register address */
 
-	/* Dynamic LCT related data */
-
 	struct i2o_dma status;	/* IOP status block */
 
 	struct i2o_dma hrt;	/* HW Resource Table */
@@ -188,6 +551,8 @@ struct i2o_controller {
 	struct i2o_io in_queue;	/* inbound message queue Host->IOP */
 	struct i2o_dma out_queue;	/* outbound message queue IOP->Host */
 
+	struct i2o_pool in_msg;	/* mempool for inbound messages */
+
 	unsigned int battery:1;	/* Has a battery backup */
 	unsigned int io_alloc:1;	/* An I/O resource was allocated */
 	unsigned int mem_alloc:1;	/* A memory resource was allocated */
@@ -247,16 +612,13 @@ struct i2o_sys_tbl {
 extern struct list_head i2o_controllers;
 
 /* Message functions */
-static inline u32 i2o_msg_get(struct i2o_controller *,
-			      struct i2o_message __iomem **);
-extern u32 i2o_msg_get_wait(struct i2o_controller *,
-			    struct i2o_message __iomem **, int);
-static inline void i2o_msg_post(struct i2o_controller *, u32);
-static inline int i2o_msg_post_wait(struct i2o_controller *, u32,
-				    unsigned long);
-extern int i2o_msg_post_wait_mem(struct i2o_controller *, u32, unsigned long,
-				 struct i2o_dma *);
-extern void i2o_msg_nop(struct i2o_controller *, u32);
+static inline struct i2o_message *i2o_msg_get(struct i2o_controller *);
+extern struct i2o_message *i2o_msg_get_wait(struct i2o_controller *, int);
+static inline void i2o_msg_post(struct i2o_controller *, struct i2o_message *);
+static inline int i2o_msg_post_wait(struct i2o_controller *,
+				    struct i2o_message *, unsigned long);
+extern int i2o_msg_post_wait_mem(struct i2o_controller *, struct i2o_message *,
+				 unsigned long, struct i2o_dma *);
 static inline void i2o_flush_reply(struct i2o_controller *, u32);
 
 /* IOP functions */
@@ -384,10 +746,10 @@ static inline u16 i2o_sg_tablesize(struct i2o_controller *c, u16 body_size)
 static inline dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
 					    size_t size,
 					    enum dma_data_direction direction,
-					    u32 __iomem ** sg_ptr)
+					    u32 ** sg_ptr)
 {
 	u32 sg_flags;
-	u32 __iomem *mptr = *sg_ptr;
+	u32 *mptr = *sg_ptr;
 	dma_addr_t dma_addr;
 
 	switch (direction) {
@@ -405,16 +767,16 @@ static inline dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
 	if (!dma_mapping_error(dma_addr)) {
 #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
 		if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
-			writel(0x7C020002, mptr++);
-			writel(PAGE_SIZE, mptr++);
+			*mptr++ = cpu_to_le32(0x7C020002);
+			*mptr++ = cpu_to_le32(PAGE_SIZE);
 		}
 #endif
 
-		writel(sg_flags | size, mptr++);
-		writel(i2o_dma_low(dma_addr), mptr++);
+		*mptr++ = cpu_to_le32(sg_flags | size);
+		*mptr++ = cpu_to_le32(i2o_dma_low(dma_addr));
 #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
 		if ((sizeof(dma_addr_t) > 4) && c->pae_support)
-			writel(i2o_dma_high(dma_addr), mptr++);
+			*mptr++ = cpu_to_le32(i2o_dma_high(dma_addr));
 #endif
 		*sg_ptr = mptr;
 	}
@@ -439,10 +801,10 @@ static inline dma_addr_t i2o_dma_map_single(struct i2o_controller *c, void *ptr,
 static inline int i2o_dma_map_sg(struct i2o_controller *c,
 				 struct scatterlist *sg, int sg_count,
 				 enum dma_data_direction direction,
-				 u32 __iomem ** sg_ptr)
+				 u32 ** sg_ptr)
 {
 	u32 sg_flags;
-	u32 __iomem *mptr = *sg_ptr;
+	u32 *mptr = *sg_ptr;
 
 	switch (direction) {
 	case DMA_TO_DEVICE:
@@ -461,19 +823,19 @@ static inline int i2o_dma_map_sg(struct i2o_controller *c,
 
 #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
 	if ((sizeof(dma_addr_t) > 4) && c->pae_support) {
-		writel(0x7C020002, mptr++);
-		writel(PAGE_SIZE, mptr++);
+		*mptr++ = cpu_to_le32(0x7C020002);
+		*mptr++ = cpu_to_le32(PAGE_SIZE);
 	}
 #endif
 
 	while (sg_count-- > 0) {
 		if (!sg_count)
 			sg_flags |= 0xC0000000;
-		writel(sg_flags | sg_dma_len(sg), mptr++);
-		writel(i2o_dma_low(sg_dma_address(sg)), mptr++);
+		*mptr++ = cpu_to_le32(sg_flags | sg_dma_len(sg));
+		*mptr++ = cpu_to_le32(i2o_dma_low(sg_dma_address(sg)));
 #ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64
 		if ((sizeof(dma_addr_t) > 4) && c->pae_support)
-			writel(i2o_dma_high(sg_dma_address(sg)), mptr++);
+			*mptr++ = cpu_to_le32(i2o_dma_high(sg_dma_address(sg)));
 #endif
 		sg++;
 	}
@@ -563,6 +925,64 @@ static inline int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr,
 	return 0;
 };
 
+/*
+ *	i2o_pool_alloc - Allocate an slab cache and mempool
+ *	@mempool: pointer to struct i2o_pool to write data into.
+ *	@name: name which is used to identify cache
+ *	@size: size of each object
+ *	@min_nr: minimum number of objects
+ *
+ *	First allocates a slab cache with name and size. Then allocates a
+ *	mempool which uses the slab cache for allocation and freeing.
+ *
+ *	Returns 0 on success or negative error code on failure.
+ */
+static inline int i2o_pool_alloc(struct i2o_pool *pool, const char *name,
+				 size_t size, int min_nr)
+{
+	pool->name = kmalloc(strlen(name) + 1, GFP_KERNEL);
+	if (!pool->name)
+		goto exit;
+	strcpy(pool->name, name);
+
+	pool->slab =
+	    kmem_cache_create(pool->name, size, 0, SLAB_HWCACHE_ALIGN, NULL,
+			      NULL);
+	if (!pool->slab)
+		goto free_name;
+
+	pool->mempool =
+	    mempool_create(min_nr, mempool_alloc_slab, mempool_free_slab,
+			   pool->slab);
+	if (!pool->mempool)
+		goto free_slab;
+
+	return 0;
+
+      free_slab:
+	kmem_cache_destroy(pool->slab);
+
+      free_name:
+	kfree(pool->name);
+
+      exit:
+	return -ENOMEM;
+};
+
+/*
+ *	i2o_pool_free - Free slab cache and mempool again
+ *	@mempool: pointer to struct i2o_pool which should be freed
+ *
+ *	Note that you have to return all objects to the mempool again before
+ *	calling i2o_pool_free().
+ */
+static inline void i2o_pool_free(struct i2o_pool *pool)
+{
+	mempool_destroy(pool->mempool);
+	kmem_cache_destroy(pool->slab);
+	kfree(pool->name);
+};
+
 /* I2O driver (OSM) functions */
 extern int i2o_driver_register(struct i2o_driver *);
 extern void i2o_driver_unregister(struct i2o_driver *);
@@ -638,39 +1058,89 @@ extern int i2o_exec_lct_get(struct i2o_controller *);
 #define kobj_to_i2o_device(kobj) to_i2o_device(container_of(kobj, struct device, kobj))
 
 /**
+ *	i2o_out_to_virt - Turn an I2O message to a virtual address
+ *	@c: controller
+ *	@m: message engine value
+ *
+ *	Turn a receive message from an I2O controller bus address into
+ *	a Linux virtual address. The shared page frame is a linear block
+ *	so we simply have to shift the offset. This function does not
+ *	work for sender side messages as they are ioremap objects
+ *	provided by the I2O controller.
+ */
+static inline struct i2o_message *i2o_msg_out_to_virt(struct i2o_controller *c,
+						      u32 m)
+{
+	BUG_ON(m < c->out_queue.phys
+	       || m >= c->out_queue.phys + c->out_queue.len);
+
+	return c->out_queue.virt + (m - c->out_queue.phys);
+};
+
+/**
+ *	i2o_msg_in_to_virt - Turn an I2O message to a virtual address
+ *	@c: controller
+ *	@m: message engine value
+ *
+ *	Turn a send message from an I2O controller bus address into
+ *	a Linux virtual address. The shared page frame is a linear block
+ *	so we simply have to shift the offset. This function does not
+ *	work for receive side messages as they are kmalloc objects
+ *	in a different pool.
+ */
+static inline struct i2o_message __iomem *i2o_msg_in_to_virt(struct
+							     i2o_controller *c,
+							     u32 m)
+{
+	return c->in_queue.virt + m;
+};
+
+/**
  *	i2o_msg_get - obtain an I2O message from the IOP
  *	@c: I2O controller
- *	@msg: pointer to a I2O message pointer
  *
- *	This function tries to get a message slot. If no message slot is
+ *	This function tries to get a message frame. If no message frame is
  *	available do not wait until one is availabe (see also i2o_msg_get_wait).
+ *	The returned pointer to the message frame is not in I/O memory, it is
+ *	allocated from a mempool. But because a MFA is allocated from the
+ *	controller too it is guaranteed that i2o_msg_post() will never fail.
  *
- *	On a success the message is returned and the pointer to the message is
- *	set in msg. The returned message is the physical page frame offset
- *	address from the read port (see the i2o spec). If no message is
- *	available returns I2O_QUEUE_EMPTY and msg is leaved untouched.
+ *	On a success a pointer to the message frame is returned. If the message
+ *	queue is empty -EBUSY is returned and if no memory is available -ENOMEM
+ *	is returned.
  */
-static inline u32 i2o_msg_get(struct i2o_controller *c,
-			      struct i2o_message __iomem ** msg)
+static inline struct i2o_message *i2o_msg_get(struct i2o_controller *c)
 {
-	u32 m = readl(c->in_port);
-
-	if (m != I2O_QUEUE_EMPTY)
-		*msg = c->in_queue.virt + m;
+	struct i2o_msg_mfa *mmsg = mempool_alloc(c->in_msg.mempool, GFP_ATOMIC);
+	if (!mmsg)
+		return ERR_PTR(-ENOMEM);
+
+	mmsg->mfa = readl(c->in_port);
+	if (mmsg->mfa == I2O_QUEUE_EMPTY) {
+		mempool_free(mmsg, c->in_msg.mempool);
+		return ERR_PTR(-EBUSY);
+	}
 
-	return m;
+	return &mmsg->msg;
 };
 
 /**
  *	i2o_msg_post - Post I2O message to I2O controller
  *	@c: I2O controller to which the message should be send
- *	@m: the message identifier
+ *	@msg: message returned by i2o_msg_get()
  *
- *	Post the message to the I2O controller.
+ *	Post the message to the I2O controller and return immediately.
  */
-static inline void i2o_msg_post(struct i2o_controller *c, u32 m)
+static inline void i2o_msg_post(struct i2o_controller *c,
+				struct i2o_message *msg)
 {
-	writel(m, c->in_port);
+	struct i2o_msg_mfa *mmsg;
+
+	mmsg = container_of(msg, struct i2o_msg_mfa, msg);
+	memcpy_toio(i2o_msg_in_to_virt(c, mmsg->mfa), msg,
+		    (le32_to_cpu(msg->u.head[0]) >> 16) << 2);
+	writel(mmsg->mfa, c->in_port);
+	mempool_free(mmsg, c->in_msg.mempool);
 };
 
 /**
@@ -685,62 +1155,66 @@ static inline void i2o_msg_post(struct i2o_controller *c, u32 m)
  *
  *	Returns 0 on success or negative error code on failure.
  */
-static inline int i2o_msg_post_wait(struct i2o_controller *c, u32 m,
+static inline int i2o_msg_post_wait(struct i2o_controller *c,
+				    struct i2o_message *msg,
 				    unsigned long timeout)
 {
-	return i2o_msg_post_wait_mem(c, m, timeout, NULL);
+	return i2o_msg_post_wait_mem(c, msg, timeout, NULL);
 };
 
 /**
- *	i2o_flush_reply - Flush reply from I2O controller
- *	@c: I2O controller
- *	@m: the message identifier
+ *	i2o_msg_nop_mfa - Returns a fetched MFA back to the controller
+ *	@c: I2O controller from which the MFA was fetched
+ *	@mfa: MFA which should be returned
  *
- *	The I2O controller must be informed that the reply message is not needed
- *	anymore. If you forget to flush the reply, the message frame can't be
- *	used by the controller anymore and is therefore lost.
+ *	This function must be used for preserved messages, because i2o_msg_nop()
+ *	also returns the allocated memory back to the msg_pool mempool.
  */
-static inline void i2o_flush_reply(struct i2o_controller *c, u32 m)
+static inline void i2o_msg_nop_mfa(struct i2o_controller *c, u32 mfa)
 {
-	writel(m, c->out_port);
+	struct i2o_message __iomem *msg;
+	u32 nop[3] = {
+		THREE_WORD_MSG_SIZE | SGL_OFFSET_0,
+		I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | ADAPTER_TID,
+		0x00000000
+	};
+
+	msg = i2o_msg_in_to_virt(c, mfa);
+	memcpy_toio(msg, nop, sizeof(nop));
+	writel(mfa, c->in_port);
 };
 
 /**
- *	i2o_out_to_virt - Turn an I2O message to a virtual address
- *	@c: controller
- *	@m: message engine value
+ *	i2o_msg_nop - Returns a message which is not used
+ *	@c: I2O controller from which the message was created
+ *	@msg: message which should be returned
  *
- *	Turn a receive message from an I2O controller bus address into
- *	a Linux virtual address. The shared page frame is a linear block
- *	so we simply have to shift the offset. This function does not
- *	work for sender side messages as they are ioremap objects
- *	provided by the I2O controller.
+ *	If you fetch a message via i2o_msg_get, and can't use it, you must
+ *	return the message with this function. Otherwise the MFA is lost as well
+ *	as the allocated memory from the mempool.
  */
-static inline struct i2o_message *i2o_msg_out_to_virt(struct i2o_controller *c,
-						      u32 m)
+static inline void i2o_msg_nop(struct i2o_controller *c,
+			       struct i2o_message *msg)
 {
-	BUG_ON(m < c->out_queue.phys
-	       || m >= c->out_queue.phys + c->out_queue.len);
+	struct i2o_msg_mfa *mmsg;
+	mmsg = container_of(msg, struct i2o_msg_mfa, msg);
 
-	return c->out_queue.virt + (m - c->out_queue.phys);
+	i2o_msg_nop_mfa(c, mmsg->mfa);
+	mempool_free(mmsg, c->in_msg.mempool);
 };
 
 /**
- *	i2o_msg_in_to_virt - Turn an I2O message to a virtual address
- *	@c: controller
- *	@m: message engine value
+ *	i2o_flush_reply - Flush reply from I2O controller
+ *	@c: I2O controller
+ *	@m: the message identifier
  *
- *	Turn a send message from an I2O controller bus address into
- *	a Linux virtual address. The shared page frame is a linear block
- *	so we simply have to shift the offset. This function does not
- *	work for receive side messages as they are kmalloc objects
- *	in a different pool.
+ *	The I2O controller must be informed that the reply message is not needed
+ *	anymore. If you forget to flush the reply, the message frame can't be
+ *	used by the controller anymore and is therefore lost.
  */
-static inline struct i2o_message __iomem *i2o_msg_in_to_virt(struct
-							     i2o_controller *c,
-							     u32 m)
+static inline void i2o_flush_reply(struct i2o_controller *c, u32 m)
 {
-	return c->in_queue.virt + m;
+	writel(m, c->out_port);
 };
 
 /*
@@ -779,350 +1253,5 @@ extern void i2o_dump_message(struct i2o_message *);
 extern void i2o_dump_hrt(struct i2o_controller *c);
 extern void i2o_debug_state(struct i2o_controller *c);
 
-/*
- *	Cache strategies
- */
-
-/*	The NULL strategy leaves everything up to the controller. This tends to be a
- *	pessimal but functional choice.
- */
-#define CACHE_NULL		0
-/*	Prefetch data when reading. We continually attempt to load the next 32 sectors
- *	into the controller cache.
- */
-#define CACHE_PREFETCH		1
-/*	Prefetch data when reading. We sometimes attempt to load the next 32 sectors
- *	into the controller cache. When an I/O is less <= 8K we assume its probably
- *	not sequential and don't prefetch (default)
- */
-#define CACHE_SMARTFETCH	2
-/*	Data is written to the cache and then out on to the disk. The I/O must be
- *	physically on the medium before the write is acknowledged (default without
- *	NVRAM)
- */
-#define CACHE_WRITETHROUGH	17
-/*	Data is written to the cache and then out on to the disk. The controller
- *	is permitted to write back the cache any way it wants. (default if battery
- *	backed NVRAM is present). It can be useful to set this for swap regardless of
- *	battery state.
- */
-#define CACHE_WRITEBACK		18
-/*	Optimise for under powered controllers, especially on RAID1 and RAID0. We
- *	write large I/O's directly to disk bypassing the cache to avoid the extra
- *	memory copy hits. Small writes are writeback cached
- */
-#define CACHE_SMARTBACK		19
-/*	Optimise for under powered controllers, especially on RAID1 and RAID0. We
- *	write large I/O's directly to disk bypassing the cache to avoid the extra
- *	memory copy hits. Small writes are writethrough cached. Suitable for devices
- *	lacking battery backup
- */
-#define CACHE_SMARTTHROUGH	20
-
-/*
- *	Ioctl structures
- */
-
-#define 	BLKI2OGRSTRAT	_IOR('2', 1, int)
-#define 	BLKI2OGWSTRAT	_IOR('2', 2, int)
-#define 	BLKI2OSRSTRAT	_IOW('2', 3, int)
-#define 	BLKI2OSWSTRAT	_IOW('2', 4, int)
-
-/*
- *	I2O Function codes
- */
-
-/*
- *	Executive Class
- */
-#define	I2O_CMD_ADAPTER_ASSIGN		0xB3
-#define	I2O_CMD_ADAPTER_READ		0xB2
-#define	I2O_CMD_ADAPTER_RELEASE		0xB5
-#define	I2O_CMD_BIOS_INFO_SET		0xA5
-#define	I2O_CMD_BOOT_DEVICE_SET		0xA7
-#define	I2O_CMD_CONFIG_VALIDATE		0xBB
-#define	I2O_CMD_CONN_SETUP		0xCA
-#define	I2O_CMD_DDM_DESTROY		0xB1
-#define	I2O_CMD_DDM_ENABLE		0xD5
-#define	I2O_CMD_DDM_QUIESCE		0xC7
-#define	I2O_CMD_DDM_RESET		0xD9
-#define	I2O_CMD_DDM_SUSPEND		0xAF
-#define	I2O_CMD_DEVICE_ASSIGN		0xB7
-#define	I2O_CMD_DEVICE_RELEASE		0xB9
-#define	I2O_CMD_HRT_GET			0xA8
-#define	I2O_CMD_ADAPTER_CLEAR		0xBE
-#define	I2O_CMD_ADAPTER_CONNECT		0xC9
-#define	I2O_CMD_ADAPTER_RESET		0xBD
-#define	I2O_CMD_LCT_NOTIFY		0xA2
-#define	I2O_CMD_OUTBOUND_INIT		0xA1
-#define	I2O_CMD_PATH_ENABLE		0xD3
-#define	I2O_CMD_PATH_QUIESCE		0xC5
-#define	I2O_CMD_PATH_RESET		0xD7
-#define	I2O_CMD_STATIC_MF_CREATE	0xDD
-#define	I2O_CMD_STATIC_MF_RELEASE	0xDF
-#define	I2O_CMD_STATUS_GET		0xA0
-#define	I2O_CMD_SW_DOWNLOAD		0xA9
-#define	I2O_CMD_SW_UPLOAD		0xAB
-#define	I2O_CMD_SW_REMOVE		0xAD
-#define	I2O_CMD_SYS_ENABLE		0xD1
-#define	I2O_CMD_SYS_MODIFY		0xC1
-#define	I2O_CMD_SYS_QUIESCE		0xC3
-#define	I2O_CMD_SYS_TAB_SET		0xA3
-
-/*
- * Utility Class
- */
-#define I2O_CMD_UTIL_NOP		0x00
-#define I2O_CMD_UTIL_ABORT		0x01
-#define I2O_CMD_UTIL_CLAIM		0x09
-#define I2O_CMD_UTIL_RELEASE		0x0B
-#define I2O_CMD_UTIL_PARAMS_GET		0x06
-#define I2O_CMD_UTIL_PARAMS_SET		0x05
-#define I2O_CMD_UTIL_EVT_REGISTER	0x13
-#define I2O_CMD_UTIL_EVT_ACK		0x14
-#define I2O_CMD_UTIL_CONFIG_DIALOG	0x10
-#define I2O_CMD_UTIL_DEVICE_RESERVE	0x0D
-#define I2O_CMD_UTIL_DEVICE_RELEASE	0x0F
-#define I2O_CMD_UTIL_LOCK		0x17
-#define I2O_CMD_UTIL_LOCK_RELEASE	0x19
-#define I2O_CMD_UTIL_REPLY_FAULT_NOTIFY	0x15
-
-/*
- * SCSI Host Bus Adapter Class
- */
-#define I2O_CMD_SCSI_EXEC		0x81
-#define I2O_CMD_SCSI_ABORT		0x83
-#define I2O_CMD_SCSI_BUSRESET		0x27
-
-/*
- * Bus Adapter Class
- */
-#define I2O_CMD_BUS_ADAPTER_RESET	0x85
-#define I2O_CMD_BUS_RESET		0x87
-#define I2O_CMD_BUS_SCAN		0x89
-#define I2O_CMD_BUS_QUIESCE		0x8b
-
-/*
- * Random Block Storage Class
- */
-#define I2O_CMD_BLOCK_READ		0x30
-#define I2O_CMD_BLOCK_WRITE		0x31
-#define I2O_CMD_BLOCK_CFLUSH		0x37
-#define I2O_CMD_BLOCK_MLOCK		0x49
-#define I2O_CMD_BLOCK_MUNLOCK		0x4B
-#define I2O_CMD_BLOCK_MMOUNT		0x41
-#define I2O_CMD_BLOCK_MEJECT		0x43
-#define I2O_CMD_BLOCK_POWER		0x70
-
-#define I2O_CMD_PRIVATE			0xFF
-
-/* Command status values  */
-
-#define I2O_CMD_IN_PROGRESS	0x01
-#define I2O_CMD_REJECTED	0x02
-#define I2O_CMD_FAILED		0x03
-#define I2O_CMD_COMPLETED	0x04
-
-/* I2O API function return values */
-
-#define I2O_RTN_NO_ERROR			0
-#define I2O_RTN_NOT_INIT			1
-#define I2O_RTN_FREE_Q_EMPTY			2
-#define I2O_RTN_TCB_ERROR			3
-#define I2O_RTN_TRANSACTION_ERROR		4
-#define I2O_RTN_ADAPTER_ALREADY_INIT		5
-#define I2O_RTN_MALLOC_ERROR			6
-#define I2O_RTN_ADPTR_NOT_REGISTERED		7
-#define I2O_RTN_MSG_REPLY_TIMEOUT		8
-#define I2O_RTN_NO_STATUS			9
-#define I2O_RTN_NO_FIRM_VER			10
-#define	I2O_RTN_NO_LINK_SPEED			11
-
-/* Reply message status defines for all messages */
-
-#define I2O_REPLY_STATUS_SUCCESS                    	0x00
-#define I2O_REPLY_STATUS_ABORT_DIRTY                	0x01
-#define I2O_REPLY_STATUS_ABORT_NO_DATA_TRANSFER     	0x02
-#define	I2O_REPLY_STATUS_ABORT_PARTIAL_TRANSFER		0x03
-#define	I2O_REPLY_STATUS_ERROR_DIRTY			0x04
-#define	I2O_REPLY_STATUS_ERROR_NO_DATA_TRANSFER		0x05
-#define	I2O_REPLY_STATUS_ERROR_PARTIAL_TRANSFER		0x06
-#define	I2O_REPLY_STATUS_PROCESS_ABORT_DIRTY		0x08
-#define	I2O_REPLY_STATUS_PROCESS_ABORT_NO_DATA_TRANSFER	0x09
-#define	I2O_REPLY_STATUS_PROCESS_ABORT_PARTIAL_TRANSFER	0x0A
-#define	I2O_REPLY_STATUS_TRANSACTION_ERROR		0x0B
-#define	I2O_REPLY_STATUS_PROGRESS_REPORT		0x80
-
-/* Status codes and Error Information for Parameter functions */
-
-#define I2O_PARAMS_STATUS_SUCCESS		0x00
-#define I2O_PARAMS_STATUS_BAD_KEY_ABORT		0x01
-#define I2O_PARAMS_STATUS_BAD_KEY_CONTINUE   	0x02
-#define I2O_PARAMS_STATUS_BUFFER_FULL		0x03
-#define I2O_PARAMS_STATUS_BUFFER_TOO_SMALL	0x04
-#define I2O_PARAMS_STATUS_FIELD_UNREADABLE	0x05
-#define I2O_PARAMS_STATUS_FIELD_UNWRITEABLE	0x06
-#define I2O_PARAMS_STATUS_INSUFFICIENT_FIELDS	0x07
-#define I2O_PARAMS_STATUS_INVALID_GROUP_ID	0x08
-#define I2O_PARAMS_STATUS_INVALID_OPERATION	0x09
-#define I2O_PARAMS_STATUS_NO_KEY_FIELD		0x0A
-#define I2O_PARAMS_STATUS_NO_SUCH_FIELD		0x0B
-#define I2O_PARAMS_STATUS_NON_DYNAMIC_GROUP	0x0C
-#define I2O_PARAMS_STATUS_OPERATION_ERROR	0x0D
-#define I2O_PARAMS_STATUS_SCALAR_ERROR		0x0E
-#define I2O_PARAMS_STATUS_TABLE_ERROR		0x0F
-#define I2O_PARAMS_STATUS_WRONG_GROUP_TYPE	0x10
-
-/* DetailedStatusCode defines for Executive, DDM, Util and Transaction error
- * messages: Table 3-2 Detailed Status Codes.*/
-
-#define I2O_DSC_SUCCESS                        0x0000
-#define I2O_DSC_BAD_KEY                        0x0002
-#define I2O_DSC_TCL_ERROR                      0x0003
-#define I2O_DSC_REPLY_BUFFER_FULL              0x0004
-#define I2O_DSC_NO_SUCH_PAGE                   0x0005
-#define I2O_DSC_INSUFFICIENT_RESOURCE_SOFT     0x0006
-#define I2O_DSC_INSUFFICIENT_RESOURCE_HARD     0x0007
-#define I2O_DSC_CHAIN_BUFFER_TOO_LARGE         0x0009
-#define I2O_DSC_UNSUPPORTED_FUNCTION           0x000A
-#define I2O_DSC_DEVICE_LOCKED                  0x000B
-#define I2O_DSC_DEVICE_RESET                   0x000C
-#define I2O_DSC_INAPPROPRIATE_FUNCTION         0x000D
-#define I2O_DSC_INVALID_INITIATOR_ADDRESS      0x000E
-#define I2O_DSC_INVALID_MESSAGE_FLAGS          0x000F
-#define I2O_DSC_INVALID_OFFSET                 0x0010
-#define I2O_DSC_INVALID_PARAMETER              0x0011
-#define I2O_DSC_INVALID_REQUEST                0x0012
-#define I2O_DSC_INVALID_TARGET_ADDRESS         0x0013
-#define I2O_DSC_MESSAGE_TOO_LARGE              0x0014
-#define I2O_DSC_MESSAGE_TOO_SMALL              0x0015
-#define I2O_DSC_MISSING_PARAMETER              0x0016
-#define I2O_DSC_TIMEOUT                        0x0017
-#define I2O_DSC_UNKNOWN_ERROR                  0x0018
-#define I2O_DSC_UNKNOWN_FUNCTION               0x0019
-#define I2O_DSC_UNSUPPORTED_VERSION            0x001A
-#define I2O_DSC_DEVICE_BUSY                    0x001B
-#define I2O_DSC_DEVICE_NOT_AVAILABLE           0x001C
-
-/* DetailedStatusCode defines for Block Storage Operation: Table 6-7 Detailed
-   Status Codes.*/
-
-#define I2O_BSA_DSC_SUCCESS               0x0000
-#define I2O_BSA_DSC_MEDIA_ERROR           0x0001
-#define I2O_BSA_DSC_ACCESS_ERROR          0x0002
-#define I2O_BSA_DSC_DEVICE_FAILURE        0x0003
-#define I2O_BSA_DSC_DEVICE_NOT_READY      0x0004
-#define I2O_BSA_DSC_MEDIA_NOT_PRESENT     0x0005
-#define I2O_BSA_DSC_MEDIA_LOCKED          0x0006
-#define I2O_BSA_DSC_MEDIA_FAILURE         0x0007
-#define I2O_BSA_DSC_PROTOCOL_FAILURE      0x0008
-#define I2O_BSA_DSC_BUS_FAILURE           0x0009
-#define I2O_BSA_DSC_ACCESS_VIOLATION      0x000A
-#define I2O_BSA_DSC_WRITE_PROTECTED       0x000B
-#define I2O_BSA_DSC_DEVICE_RESET          0x000C
-#define I2O_BSA_DSC_VOLUME_CHANGED        0x000D
-#define I2O_BSA_DSC_TIMEOUT               0x000E
-
-/* FailureStatusCodes, Table 3-3 Message Failure Codes */
-
-#define I2O_FSC_TRANSPORT_SERVICE_SUSPENDED             0x81
-#define I2O_FSC_TRANSPORT_SERVICE_TERMINATED            0x82
-#define I2O_FSC_TRANSPORT_CONGESTION                    0x83
-#define I2O_FSC_TRANSPORT_FAILURE                       0x84
-#define I2O_FSC_TRANSPORT_STATE_ERROR                   0x85
-#define I2O_FSC_TRANSPORT_TIME_OUT                      0x86
-#define I2O_FSC_TRANSPORT_ROUTING_FAILURE               0x87
-#define I2O_FSC_TRANSPORT_INVALID_VERSION               0x88
-#define I2O_FSC_TRANSPORT_INVALID_OFFSET                0x89
-#define I2O_FSC_TRANSPORT_INVALID_MSG_FLAGS             0x8A
-#define I2O_FSC_TRANSPORT_FRAME_TOO_SMALL               0x8B
-#define I2O_FSC_TRANSPORT_FRAME_TOO_LARGE               0x8C
-#define I2O_FSC_TRANSPORT_INVALID_TARGET_ID             0x8D
-#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_ID          0x8E
-#define I2O_FSC_TRANSPORT_INVALID_INITIATOR_CONTEXT     0x8F
-#define I2O_FSC_TRANSPORT_UNKNOWN_FAILURE               0xFF
-
-/* Device Claim Types */
-#define	I2O_CLAIM_PRIMARY					0x01000000
-#define	I2O_CLAIM_MANAGEMENT					0x02000000
-#define	I2O_CLAIM_AUTHORIZED					0x03000000
-#define	I2O_CLAIM_SECONDARY					0x04000000
-
-/* Message header defines for VersionOffset */
-#define I2OVER15	0x0001
-#define I2OVER20	0x0002
-
-/* Default is 1.5 */
-#define I2OVERSION	I2OVER15
-
-#define SGL_OFFSET_0    I2OVERSION
-#define SGL_OFFSET_4    (0x0040 | I2OVERSION)
-#define SGL_OFFSET_5    (0x0050 | I2OVERSION)
-#define SGL_OFFSET_6    (0x0060 | I2OVERSION)
-#define SGL_OFFSET_7    (0x0070 | I2OVERSION)
-#define SGL_OFFSET_8    (0x0080 | I2OVERSION)
-#define SGL_OFFSET_9    (0x0090 | I2OVERSION)
-#define SGL_OFFSET_10   (0x00A0 | I2OVERSION)
-#define SGL_OFFSET_11   (0x00B0 | I2OVERSION)
-#define SGL_OFFSET_12   (0x00C0 | I2OVERSION)
-#define SGL_OFFSET(x)   (((x)<<4) | I2OVERSION)
-
-/* Transaction Reply Lists (TRL) Control Word structure */
-#define TRL_SINGLE_FIXED_LENGTH		0x00
-#define TRL_SINGLE_VARIABLE_LENGTH	0x40
-#define TRL_MULTIPLE_FIXED_LENGTH	0x80
-
- /* msg header defines for MsgFlags */
-#define MSG_STATIC	0x0100
-#define MSG_64BIT_CNTXT	0x0200
-#define MSG_MULTI_TRANS	0x1000
-#define MSG_FAIL	0x2000
-#define MSG_FINAL	0x4000
-#define MSG_REPLY	0x8000
-
- /* minimum size msg */
-#define THREE_WORD_MSG_SIZE	0x00030000
-#define FOUR_WORD_MSG_SIZE	0x00040000
-#define FIVE_WORD_MSG_SIZE	0x00050000
-#define SIX_WORD_MSG_SIZE	0x00060000
-#define SEVEN_WORD_MSG_SIZE	0x00070000
-#define EIGHT_WORD_MSG_SIZE	0x00080000
-#define NINE_WORD_MSG_SIZE	0x00090000
-#define TEN_WORD_MSG_SIZE	0x000A0000
-#define ELEVEN_WORD_MSG_SIZE	0x000B0000
-#define I2O_MESSAGE_SIZE(x)	((x)<<16)
-
-/* special TID assignments */
-#define ADAPTER_TID		0
-#define HOST_TID		1
-
-/* outbound queue defines */
-#define I2O_MAX_OUTBOUND_MSG_FRAMES	128
-#define I2O_OUTBOUND_MSG_FRAME_SIZE	128	/* in 32-bit words */
-
-#define I2O_POST_WAIT_OK	0
-#define I2O_POST_WAIT_TIMEOUT	-ETIMEDOUT
-
-#define I2O_CONTEXT_LIST_MIN_LENGTH	15
-#define I2O_CONTEXT_LIST_USED		0x01
-#define I2O_CONTEXT_LIST_DELETED	0x02
-
-/* timeouts */
-#define I2O_TIMEOUT_INIT_OUTBOUND_QUEUE	15
-#define I2O_TIMEOUT_MESSAGE_GET		5
-#define I2O_TIMEOUT_RESET		30
-#define I2O_TIMEOUT_STATUS_GET		5
-#define I2O_TIMEOUT_LCT_GET		360
-#define I2O_TIMEOUT_SCSI_SCB_ABORT	240
-
-/* retries */
-#define I2O_HRT_GET_TRIES		3
-#define I2O_LCT_GET_TRIES		3
-
-/* defines for max_sectors and max_phys_segments */
-#define I2O_MAX_SECTORS			1024
-#define I2O_MAX_SECTORS_LIMITED		256
-#define I2O_MAX_PHYS_SEGMENTS		MAX_PHYS_SEGMENTS
-
 #endif				/* __KERNEL__ */
 #endif				/* _I2O_H */