/* incoming message handlers */
static int prd_msg_handle_attn_ack(struct opal_prd_msg *msg)
{
int rc;
lock(&ipoll_lock);
rc = __ipoll_update_mask(msg->attn_ack.proc, false,
msg->attn_ack.ipoll_ack & PRD_IPOLL_MASK);
unlock(&ipoll_lock);
if (rc)
prlog(PR_ERR, "PRD: Unable to unmask ipoll!\n");
return rc;
}
static int prd_msg_handle_fini(void)
{
struct proc_chip *chip;
lock(&events_lock);
prd_active = false;
unlock(&events_lock);
lock(&ipoll_lock);
for_each_chip(chip) {
__ipoll_update_mask(chip->id, true, PRD_IPOLL_MASK);
}
unlock(&ipoll_lock);
return OPAL_SUCCESS;
}
static int ipoll_record_and_mask_pending(uint32_t proc)
{
uint64_t status;
int rc;
lock(&ipoll_lock);
rc = xscom_read(proc, PRD_IPOLL_REG_STATUS, &status);
if (!rc)
__ipoll_update_mask(proc, true, status);
unlock(&ipoll_lock);
if (!rc)
ipoll_status[proc] |= (status & PRD_IPOLL_MASK);
return rc;
}
void prd_init(void)
{
struct proc_chip *chip;
/* mask everything */
lock(&ipoll_lock);
for_each_chip(chip) {
__ipoll_update_mask(chip->id, true, PRD_IPOLL_MASK);
}
unlock(&ipoll_lock);
if (fsp_present()) {
/* todo: FSP implementation */
queue_prd_msg = queue_prd_msg_nop;
} else {
queue_prd_msg = queue_prd_msg_hbrt;
opal_register(OPAL_PRD_MSG, opal_prd_msg, 1);
}
}
static int prd_msg_handle_init(struct opal_prd_msg *msg)
{
struct proc_chip *chip;
lock(&ipoll_lock);
for_each_chip(chip) {
__ipoll_update_mask(chip->id, false, msg->init.ipoll);
}
unlock(&ipoll_lock);
/* we're transitioning from inactive to active; send any pending tmgt
* interrupts */
lock(&events_lock);
prd_active = true;
if (!prd_msg_inuse)
send_pending_events();
unlock(&events_lock);
return OPAL_SUCCESS;
}