[Qemu-devel] [PULL 11/40] s390x/css: update css_adapter_interrupt

[Christian Borntraeger <borntraeger@de.ibm.com>]

From: Yi Min Zhao <zyimin@linux.vnet.ibm.com>

Let's use the new inject_airq callback of flic to inject adapter
interrupts. For kvm case, if the kernel flic doesn't support the new
interface, the irq routine remains unchanged. For non-kvm case,
qemu-flic handles the suppression process.

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Signed-off-by: Fei Li <sherrylf@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 hw/s390x/css.c          | 18 ++++++++++++++++--
 hw/s390x/s390-pci-bus.c |  2 +-
 hw/s390x/virtio-ccw.c   |  2 +-
 include/hw/s390x/css.h  |  2 +-
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index 7b82176..1aed89f 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -547,12 +547,26 @@ out:
     return r;
 }
 
-void css_adapter_interrupt(uint8_t isc)
+void css_adapter_interrupt(CssIoAdapterType type, uint8_t isc)
 {
+    S390FLICState *fs = s390_get_flic();
+    S390FLICStateClass *fsc = S390_FLIC_COMMON_GET_CLASS(fs);
     uint32_t io_int_word = (isc << 27) | IO_INT_WORD_AI;
+    IoAdapter *adapter = channel_subsys.io_adapters[type][isc];
+
+    if (!adapter) {
+        return;
+    }
 
     trace_css_adapter_interrupt(isc);
-    s390_io_interrupt(0, 0, 0, io_int_word);
+    if (fs->ais_supported) {
+        if (fsc->inject_airq(fs, type, isc, adapter->flags)) {
+            error_report("Failed to inject airq with AIS supported");
+            exit(1);
+        }
+    } else {
+        s390_io_interrupt(0, 0, 0, io_int_word);
+    }
 }
 
 static void sch_handle_clear_func(SubchDev *sch)
diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index b9603e7..2de4435 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -504,7 +504,7 @@ static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data,
                    0x80 >> ((ind_bit + vec) % 8));
     if (!set_ind_atomic(pbdev->routes.adapter.summary_addr + sum_bit / 8,
                                        0x80 >> (sum_bit % 8))) {
-        css_adapter_interrupt(pbdev->isc);
+        css_adapter_interrupt(CSS_IO_ADAPTER_PCI, pbdev->isc);
     }
 }
 
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index e18fd26..5afd9bb 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -1074,7 +1074,7 @@ static void virtio_ccw_notify(DeviceState *d, uint16_t vector)
                                   0x80 >> ((ind_bit + vector) % 8));
             if (!virtio_set_ind_atomic(sch, dev->summary_indicator->addr,
                                        0x01)) {
-                css_adapter_interrupt(dev->thinint_isc);
+                css_adapter_interrupt(CSS_IO_ADAPTER_VIRTIO, dev->thinint_isc);
             }
         } else {
             indicators = address_space_ldq(&address_space_memory,
diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h
index 5ee6d52..dd36d39 100644
--- a/include/hw/s390x/css.h
+++ b/include/hw/s390x/css.h
@@ -155,7 +155,6 @@ void css_generate_sch_crws(uint8_t cssid, uint8_t ssid, uint16_t schid,
 void css_generate_chp_crws(uint8_t cssid, uint8_t chpid);
 void css_generate_css_crws(uint8_t cssid);
 void css_clear_sei_pending(void);
-void css_adapter_interrupt(uint8_t isc);
 int s390_ccw_cmd_request(ORB *orb, SCSW *scsw, void *data);
 int do_subchannel_work_virtual(SubchDev *sub, ORB *orb);
 int do_subchannel_work_passthrough(SubchDev *sub, ORB *orb);
@@ -166,6 +165,7 @@ typedef enum {
     CSS_IO_ADAPTER_TYPE_NUMS,
 } CssIoAdapterType;
 
+void css_adapter_interrupt(CssIoAdapterType type, uint8_t isc);
 int css_do_sic(CPUS390XState *env, uint8_t isc, uint16_t mode);
 uint32_t css_get_adapter_id(CssIoAdapterType type, uint8_t isc);
 void css_register_io_adapters(CssIoAdapterType type, bool swap, bool maskable,
-- 
2.7.4