/* Since we do not have a HW doorbell in SOC, this is only used in JF/JT */
static void
handle_xeon_event_irq(void *arg)
{
struct ntb_softc *ntb = arg;
int rc;
rc = ntb_check_link_status(ntb);
if (rc != 0)
device_printf(ntb->device, "Error determining link status\n");
/* bit 15 is always the link bit */
db_iowrite(ntb, ntb->reg_ofs.ldb, 1 << XEON_LINK_DB);
}
/* Since we do not have a HW doorbell in SOC, this is only used in JF/JT */
static void
handle_xeon_event_irq(void *arg)
{
struct ntb_softc *ntb = arg;
int rc;
rc = ntb_check_link_status(ntb);
if (rc != 0)
device_printf(ntb->device, "Error determining link status\n");
/* bit 15 is always the link bit */
ntb_reg_write(2, ntb->reg_ofs.pdb, 1 << ntb->limits.max_db_bits);
}
/* SOC does not have link status interrupt, poll on that platform */
static void
ntb_handle_heartbeat(void *arg)
{
struct ntb_softc *ntb = arg;
uint32_t status32;
int rc = ntb_check_link_status(ntb);
if (rc != 0)
device_printf(ntb->device,
"Error determining link status\n");
/* Check to see if a link error is the cause of the link down */
if (ntb->link_status == NTB_LINK_DOWN) {
status32 = ntb_reg_read(4, SOC_LTSSMSTATEJMP_OFFSET);
if ((status32 & SOC_LTSSMSTATEJMP_FORCEDETECT) != 0) {
callout_reset(&ntb->lr_timer, 0, recover_soc_link,
ntb);
return;
}
}
callout_reset(&ntb->heartbeat_timer, NTB_HB_TIMEOUT * hz,
ntb_handle_heartbeat, ntb);
}
