o Rename ic_eoi to ic_clear to emphasize the functions it points

  don't send and EOI which works like on amd64/i386 and blocks all
  interrupts on the relevant interrupt controller.
o Replace the post_filter and post_inthread hooks registered when
  creating the interrupt events with just ic_clear as on sparc64 we
  don't need to do any disable->EOI->enable dance to unblock all but
  the relevant interrupt while running the filter or handler; just
  not clearing the interrupt already has the same effect.
o Merge from amd64/i386:
  - Split the intr_table_lock into an sx lock used for most things,
    and a spin lock to protect intrcnt_index.
  - Add support for binding interrupts to CPUs, including for the
    bus_bind_intr(9) interface, a assign_cpu hook and initially
    shuffling interrupts arround in a round-robin fashion.

Reviewed by:	jhb
MFC after:	1 month

1 files changed, 16 insertions, 3 deletions

diff --git a/sys/sparc64/sbus/sbus.c b/sys/sparc64/sbus/sbus.c
index 44f51f5..3eac880 100644
--- a/sys/sparc64/sbus/sbus.c
+++ b/sys/sparc64/sbus/sbus.c
@@ -196,7 +196,8 @@ static struct sbus_devinfo * sbus_setup_dinfo(device_t, struct sbus_softc *,
 static void sbus_destroy_dinfo(struct sbus_devinfo *);
 static void sbus_intr_enable(void *);
 static void sbus_intr_disable(void *);
-static void sbus_intr_eoi(void *);
+static void sbus_intr_assign(void *);
+static void sbus_intr_clear(void *);
 static int sbus_find_intrmap(struct sbus_softc *, u_int, bus_addr_t *,
     bus_addr_t *);
 static bus_space_tag_t sbus_alloc_bustag(struct sbus_softc *);
@@ -253,7 +254,8 @@ DRIVER_MODULE(sbus, nexus, sbus_driver, sbus_devclass, 0, 0);
 static const struct intr_controller sbus_ic = {
 	sbus_intr_enable,
 	sbus_intr_disable,
-	sbus_intr_eoi
+	sbus_intr_assign,
+	sbus_intr_clear
 };
 
 struct sbus_icarg {
@@ -667,6 +669,7 @@ sbus_intr_enable(void *arg)
 	SYSIO_WRITE8(sica->sica_sc, sica->sica_map,
 	    INTMAP_ENABLE(iv->iv_vec, iv->iv_mid));
 }
+
 static void
 sbus_intr_disable(void *arg)
 {
@@ -677,7 +680,17 @@ sbus_intr_disable(void *arg)
 }
 
 static void
-sbus_intr_eoi(void *arg)
+sbus_intr_assign(void *arg)
+{
+	struct intr_vector *iv = arg;
+	struct sbus_icarg *sica = iv->iv_icarg;
+
+	SYSIO_WRITE8(sica->sica_sc, sica->sica_map, INTMAP_TID(
+	    SYSIO_READ8(sica->sica_sc, sica->sica_map), iv->iv_mid));
+}
+
+static void
+sbus_intr_clear(void *arg)
 {
 	struct intr_vector *iv = arg;
 	struct sbus_icarg *sica = iv->iv_icarg;