@@ -1295,6 +1295,25 @@ uint32_t xive_alloc_ipi_irqs(uint32_t chip_id, uint32_t count, uint32_t align)
return base;
}
+void *xive_get_trigger_port(uint32_t girq)
+{
+ struct xive *x;
+ uint32_t idx;
+
+ /* Find XIVE on which the IVE resides */
+ x = xive_from_isn(girq);
+ if (!x)
+ return NULL;
+
+ /* Make sure it's an IPI on that chip */
+ if (girq < x->int_base ||
+ girq >= x->int_ipi_top)
+ return NULL;
+
+ idx = girq - x->int_base;
+ return x->esb_mmio + idx * 0x20000;
+}
+
uint64_t xive_get_notify_port(uint32_t chip_id, uint32_t ent)
{
struct proc_chip *chip = get_chip(chip_id);
@@ -382,4 +382,9 @@ void xive_register_source(uint32_t base, uint32_t count, uint32_t shift,
void xive_cpu_callin(struct cpu_thread *cpu);
+/* Get the trigger page address for an interrupt allocated with
+ * xive_alloc_ipi_irqs()
+ */
+void *xive_get_trigger_port(uint32_t girq);
+
#endif /* __XIVE_H__ */
To be used by such things as VAS Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- hw/xive.c | 19 +++++++++++++++++++ include/xive.h | 5 +++++ 2 files changed, 24 insertions(+)