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

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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>
This commit is contained in:
Markus Lidel
2006-01-06 00:19:29 -08:00
committed by Linus Torvalds
parent 347a8dc3b8
commit a1a5ea70a6
9 changed files with 1276 additions and 1161 deletions
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21
drivers/message/i2o/bus-osm.c
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@ -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;