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_ONSTACK(wq);
struct i2o_exec_wait *wait;
static u32 tcntxt = 0x80000000;
unsigned long flags;
int rc = 0;
wait = i2o_exec_wait_alloc();
if (!wait) {
i2o_msg_nop(c, msg);
return -ENOMEM;
}
if (tcntxt == 0xffffffff)
tcntxt = 0x80000000;
if (dma)
wait->dma = *dma;
/*
*/
msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
wait->tcntxt = tcntxt++;
msg->u.s.tcntxt = cpu_to_le32(wait->tcntxt);
wait->wq = &wq;
/*
*/
list_add(&wait->list, &i2o_exec_wait_list);
/*
*/
i2o_msg_post(c, msg);
wait_event_interruptible_timeout(wq, wait->complete, timeout * HZ);
spin_lock_irqsave(&wait->lock, flags);
wait->wq = NULL;
if (wait->complete)
rc = le32_to_cpu(wait->msg->body[0]) >> 24;
else {
/*
*/
if (dma)
/**
* i2o_msg_post_wait_mem - Post and wait a message with DMA buffers
* @c: controller
* @msg: message to post
* @timeout: time in seconds to wait
* @dma: i2o_dma struct of the DMA buffer to free on failure
*
* This API allows an OSM to post a message and then be told whether or
* not the system received a successful reply. If the message times out
* then the value '-ETIMEDOUT' is returned. This is a special case. In
* this situation the message may (should) complete at an indefinite time
* in the future. When it completes it will use the memory buffer
* attached to the request. If -ETIMEDOUT is returned then the memory
* buffer must not be freed. Instead the event completion will free them
* for you. In all other cases the buffer are your problem.
*
* 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, struct i2o_message *msg,
unsigned long timeout, struct i2o_dma *dma)
{
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
struct i2o_exec_wait *wait;
static u32 tcntxt = 0x80000000;
unsigned long flags;
int rc = 0;
wait = i2o_exec_wait_alloc();
if (!wait) {
i2o_msg_nop(c, msg);
return -ENOMEM;
}
if (tcntxt == 0xffffffff)
tcntxt = 0x80000000;
if (dma)
wait->dma = *dma;
/*
* Fill in the message initiator context and transaction context.
* We will only use transaction contexts >= 0x80000000 for POST WAIT,
* so we could find a POST WAIT reply easier in the reply handler.
*/
msg->u.s.icntxt = cpu_to_le32(i2o_exec_driver.context);
wait->tcntxt = tcntxt++;
msg->u.s.tcntxt = cpu_to_le32(wait->tcntxt);
wait->wq = &wq;
/*
* we add elements to the head, because if a entry in the list will
* never be removed, we have to iterate over it every time
*/
list_add(&wait->list, &i2o_exec_wait_list);
/*
* 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, msg);
wait_event_interruptible_timeout(wq, wait->complete, timeout * HZ);
spin_lock_irqsave(&wait->lock, flags);
wait->wq = NULL;
if (wait->complete)
rc = le32_to_cpu(wait->msg->body[0]) >> 24;
else {
/*
* We cannot remove it now. This is important. When it does
* terminate (which it must do if the controller has not
* died...) then it will otherwise scribble on stuff.
*
* FIXME: try abort message
*/
if (dma)
/**
* i2o_msg_post_wait_mem - Post and wait a message with DMA buffers
* @c: controller
* @m: message to post
* @timeout: time in seconds to wait
* @dma: i2o_dma struct of the DMA buffer to free on failure
*
* This API allows an OSM to post a message and then be told whether or
* not the system received a successful reply. If the message times out
* then the value '-ETIMEDOUT' is returned. This is a special case. In
* this situation the message may (should) complete at an indefinite time
* in the future. When it completes it will use the memory buffer
* attached to the request. If -ETIMEDOUT is returned then the memory
* buffer must not be freed. Instead the event completion will free them
* for you. In all other cases the buffer are your problem.
*
* 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)
{
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();
if (!wait)
return -ENOMEM;
if (tcntxt == 0xffffffff)
tcntxt = 0x80000000;
if (dma)
wait->dma = *dma;
/*
* Fill in the message initiator context and transaction context.
* 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);
wait->tcntxt = tcntxt++;
writel(wait->tcntxt, &msg->u.s.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);
if (!wait->complete) {
wait->wq = &wq;
/*
* we add elements add the head, because if a entry in the list
* will never be removed, we have to iterate over it every time
*/
list_add(&wait->list, &i2o_exec_wait_list);
wait_event_interruptible_timeout(wq, wait->complete,
timeout * HZ);
wait->wq = NULL;
}
barrier();
if (wait->complete) {
rc = le32_to_cpu(wait->msg->body[0]) >> 24;
i2o_flush_reply(c, wait->m);
i2o_exec_wait_free(wait);
} else {
