static void hvc_tile_notifier_del_irq(struct hvc_struct *hp, int irq)
{
HV_Coord coord = { 0, 0 };
/* Tell the hypervisor to stop sending us interrupts. */
hv_console_set_ipi(KERNEL_PL, -1, coord);
notifier_del_irq(hp, irq);
}
static void hvterm_hvsi_close(struct hvc_struct *hp, int data)
{
struct hvterm_priv *pv = hvterm_privs[hp->vtermno];
pr_devel("HVSI@%x: do close !\n", pv->termno);
hvsilib_close(&pv->hvsi, hp);
notifier_del_irq(hp, data);
}
/*
* IRQ based callbacks.
*/
static int hvc_tile_notifier_add_irq(struct hvc_struct *hp, int irq)
{
int rc;
int cpu = raw_smp_processor_id(); /* Choose an arbitrary cpu */
HV_Coord coord = { .x = cpu_x(cpu), .y = cpu_y(cpu) };
rc = notifier_add_irq(hp, irq);
if (rc)
return rc;
/*
* Request that the hypervisor start sending us interrupts.
* If the hypervisor returns an error, we still return 0, so that
* we can fall back to polling.
*/
if (hv_console_set_ipi(KERNEL_PL, irq, coord) < 0)
notifier_del_irq(hp, irq);
return 0;
}
void notifier_hangup_irq(struct hvc_struct *hp, int irq)
{
notifier_del_irq(hp, irq);
}