[PATCH v2 22/33] spapr, xics, xive: Move irq claim and free from SpaprIrq to SpaprInterruptController

[David Gibson]

These methods, like cpu_intc_create, really belong to the interrupt
controller, but need to be called on all possible intcs.

Like cpu_intc_create, therefore, make them methods on the intc and
always call it for all existing intcs.

Signed-off-by: David Gibson <address@hidden>
---
 hw/intc/spapr_xive.c        |  71 +++++++++++-----------
 hw/intc/xics_spapr.c        |  29 +++++++++
 hw/ppc/spapr_irq.c          | 114 ++++++++++++------------------------
 include/hw/ppc/spapr_irq.h  |   5 +-
 include/hw/ppc/spapr_xive.h |   2 -
 5 files changed, 107 insertions(+), 114 deletions(-)

diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index 9338daba3d..ff1a175b44 100644
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -487,6 +487,42 @@ static const VMStateDescription vmstate_spapr_xive = {
     },
 };
 
+static int spapr_xive_claim_irq(SpaprInterruptController *intc, int lisn,
+                                bool lsi, Error **errp)
+{
+    SpaprXive *xive = SPAPR_XIVE(intc);
+    XiveSource *xsrc = &xive->source;
+
+    assert(lisn < xive->nr_irqs);
+
+    if (xive_eas_is_valid(&xive->eat[lisn])) {
+        error_setg(errp, "IRQ %d is not free", lisn);
+        return -EBUSY;
+    }
+
+    /*
+     * Set default values when allocating an IRQ number
+     */
+    xive->eat[lisn].w |= cpu_to_be64(EAS_VALID | EAS_MASKED);
+    if (lsi) {
+        xive_source_irq_set_lsi(xsrc, lisn);
+    }
+
+    if (kvm_irqchip_in_kernel()) {
+        return kvmppc_xive_source_reset_one(xsrc, lisn, errp);
+    }
+
+    return 0;
+}
+
+static void spapr_xive_free_irq(SpaprInterruptController *intc, int lisn)
+{
+    SpaprXive *xive = SPAPR_XIVE(intc);
+    assert(lisn < xive->nr_irqs);
+
+    xive->eat[lisn].w &= cpu_to_be64(~EAS_VALID);
+}
+
 static Property spapr_xive_properties[] = {
     DEFINE_PROP_UINT32("nr-irqs", SpaprXive, nr_irqs, 0),
     DEFINE_PROP_UINT32("nr-ends", SpaprXive, nr_ends, 0),
@@ -536,6 +572,8 @@ static void spapr_xive_class_init(ObjectClass *klass, void 
*data)
     xrc->get_tctx = spapr_xive_get_tctx;
 
     sicc->cpu_intc_create = spapr_xive_cpu_intc_create;
+    sicc->claim_irq = spapr_xive_claim_irq;
+    sicc->free_irq = spapr_xive_free_irq;
 }
 
 static const TypeInfo spapr_xive_info = {
@@ -557,39 +595,6 @@ static void spapr_xive_register_types(void)
 
 type_init(spapr_xive_register_types)
 
-int spapr_xive_irq_claim(SpaprXive *xive, int lisn, bool lsi, Error **errp)
-{
-    XiveSource *xsrc = &xive->source;
-
-    assert(lisn < xive->nr_irqs);
-
-    if (xive_eas_is_valid(&xive->eat[lisn])) {
-        error_setg(errp, "IRQ %d is not free", lisn);
-        return -EBUSY;
-    }
-
-    /*
-     * Set default values when allocating an IRQ number
-     */
-    xive->eat[lisn].w |= cpu_to_be64(EAS_VALID | EAS_MASKED);
-    if (lsi) {
-        xive_source_irq_set_lsi(xsrc, lisn);
-    }
-
-    if (kvm_irqchip_in_kernel()) {
-        return kvmppc_xive_source_reset_one(xsrc, lisn, errp);
-    }
-
-    return 0;
-}
-
-void spapr_xive_irq_free(SpaprXive *xive, int lisn)
-{
-    assert(lisn < xive->nr_irqs);
-
-    xive->eat[lisn].w &= cpu_to_be64(~EAS_VALID);
-}
-
 /*
  * XIVE hcalls
  *
diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c
index 946311b858..224fe1efcd 100644
--- a/hw/intc/xics_spapr.c
+++ b/hw/intc/xics_spapr.c
@@ -346,6 +346,33 @@ static int 
xics_spapr_cpu_intc_create(SpaprInterruptController *intc,
     return 0;
 }
 
+static int xics_spapr_claim_irq(SpaprInterruptController *intc, int irq,
+                                bool lsi, Error **errp)
+{
+    ICSState *ics = ICS_SPAPR(intc);
+
+    assert(ics);
+    assert(ics_valid_irq(ics, irq));
+
+    if (!ics_irq_free(ics, irq - ics->offset)) {
+        error_setg(errp, "IRQ %d is not free", irq);
+        return -EBUSY;
+    }
+
+    ics_set_irq_type(ics, irq - ics->offset, lsi);
+    return 0;
+}
+
+static void xics_spapr_free_irq(SpaprInterruptController *intc, int irq)
+{
+    ICSState *ics = ICS_SPAPR(intc);
+    uint32_t srcno = irq - ics->offset;
+
+    assert(ics_valid_irq(ics, irq));
+
+    memset(&ics->irqs[srcno], 0, sizeof(ICSIRQState));
+}
+
 static void ics_spapr_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -355,6 +382,8 @@ static void ics_spapr_class_init(ObjectClass *klass, void 
*data)
     device_class_set_parent_realize(dc, ics_spapr_realize,
                                     &isc->parent_realize);
     sicc->cpu_intc_create = xics_spapr_cpu_intc_create;
+    sicc->claim_irq = xics_spapr_claim_irq;
+    sicc->free_irq = xics_spapr_free_irq;
 }
 
 static const TypeInfo ics_spapr_info = {
diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
index a855dfe4e9..ea44378d8c 100644
--- a/hw/ppc/spapr_irq.c
+++ b/hw/ppc/spapr_irq.c
@@ -98,33 +98,6 @@ static void spapr_irq_init_kvm(SpaprMachineState *spapr,
  * XICS IRQ backend.
  */
 
-static int spapr_irq_claim_xics(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
-{
-    ICSState *ics = spapr->ics;
-
-    assert(ics);
-    assert(ics_valid_irq(ics, irq));
-
-    if (!ics_irq_free(ics, irq - ics->offset)) {
-        error_setg(errp, "IRQ %d is not free", irq);
-        return -1;
-    }
-
-    ics_set_irq_type(ics, irq - ics->offset, lsi);
-    return 0;
-}
-
-static void spapr_irq_free_xics(SpaprMachineState *spapr, int irq)
-{
-    ICSState *ics = spapr->ics;
-    uint32_t srcno = irq - ics->offset;
-
-    assert(ics_valid_irq(ics, irq));
-
-    memset(&ics->irqs[srcno], 0, sizeof(ICSIRQState));
-}
-
 static void spapr_irq_print_info_xics(SpaprMachineState *spapr, Monitor *mon)
 {
     CPUState *cs;
@@ -182,8 +155,6 @@ SpaprIrq spapr_irq_xics = {
     .xics        = true,
     .xive        = false,
 
-    .claim       = spapr_irq_claim_xics,
-    .free        = spapr_irq_free_xics,
     .print_info  = spapr_irq_print_info_xics,
     .dt_populate = spapr_dt_xics,
     .post_load   = spapr_irq_post_load_xics,
@@ -196,17 +167,6 @@ SpaprIrq spapr_irq_xics = {
  * XIVE IRQ backend.
  */
 
-static int spapr_irq_claim_xive(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
-{
-    return spapr_xive_irq_claim(spapr->xive, irq, lsi, errp);
-}
-
-static void spapr_irq_free_xive(SpaprMachineState *spapr, int irq)
-{
-    spapr_xive_irq_free(spapr->xive, irq);
-}
-
 static void spapr_irq_print_info_xive(SpaprMachineState *spapr,
                                       Monitor *mon)
 {
@@ -272,8 +232,6 @@ SpaprIrq spapr_irq_xive = {
     .xics        = false,
     .xive        = true,
 
-    .claim       = spapr_irq_claim_xive,
-    .free        = spapr_irq_free_xive,
     .print_info  = spapr_irq_print_info_xive,
     .dt_populate = spapr_dt_xive,
     .post_load   = spapr_irq_post_load_xive,
@@ -301,33 +259,6 @@ static SpaprIrq *spapr_irq_current(SpaprMachineState 
*spapr)
         &spapr_irq_xive : &spapr_irq_xics;
 }
 
-static int spapr_irq_claim_dual(SpaprMachineState *spapr, int irq, bool lsi,
-                                Error **errp)
-{
-    Error *local_err = NULL;
-    int ret;
-
-    ret = spapr_irq_xics.claim(spapr, irq, lsi, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return ret;
-    }
-
-    ret = spapr_irq_xive.claim(spapr, irq, lsi, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return ret;
-    }
-
-    return ret;
-}
-
-static void spapr_irq_free_dual(SpaprMachineState *spapr, int irq)
-{
-    spapr_irq_xics.free(spapr, irq);
-    spapr_irq_xive.free(spapr, irq);
-}
-
 static void spapr_irq_print_info_dual(SpaprMachineState *spapr, Monitor *mon)
 {
     spapr_irq_current(spapr)->print_info(spapr, mon);
@@ -401,8 +332,6 @@ SpaprIrq spapr_irq_dual = {
     .xics        = true,
     .xive        = true,
 
-    .claim       = spapr_irq_claim_dual,
-    .free        = spapr_irq_free_dual,
     .print_info  = spapr_irq_print_info_dual,
     .dt_populate = spapr_irq_dt_populate_dual,
     .post_load   = spapr_irq_post_load_dual,
@@ -567,10 +496,12 @@ void spapr_irq_init(SpaprMachineState *spapr, Error 
**errp)
 
         /* Enable the CPU IPIs */
         for (i = 0; i < nr_servers; ++i) {
+            SpaprInterruptControllerClass *sicc
+                = SPAPR_INTC_GET_CLASS(spapr->xive);
             Error *local_err = NULL;
 
-            spapr_xive_irq_claim(spapr->xive, SPAPR_IRQ_IPI + i,
-                                 false, &local_err);
+            sicc->claim_irq(SPAPR_INTC(spapr->xive), SPAPR_IRQ_IPI + i,
+                            false, &local_err);
             if (local_err) {
                 goto out;
             }
@@ -588,10 +519,30 @@ out:
 
 int spapr_irq_claim(SpaprMachineState *spapr, int irq, bool lsi, Error **errp)
 {
+    int rc;
+
     assert(irq >= SPAPR_XIRQ_BASE);
     assert(irq < (spapr->irq->nr_xirqs + SPAPR_XIRQ_BASE));
 
-    return spapr->irq->claim(spapr, irq, lsi, errp);
+    if (spapr->xive) {
+        SpaprInterruptControllerClass *sicc = 
SPAPR_INTC_GET_CLASS(spapr->xive);
+
+        rc = sicc->claim_irq(SPAPR_INTC(spapr->xive), irq, lsi, errp);
+        if (rc < 0) {
+            return rc;
+        }
+    }
+
+    if (spapr->ics) {
+        SpaprInterruptControllerClass *sicc = SPAPR_INTC_GET_CLASS(spapr->ics);
+
+        rc = sicc->claim_irq(SPAPR_INTC(spapr->ics), irq, lsi, errp);
+        if (rc < 0) {
+            return rc;
+        }
+    }
+
+    return 0;
 }
 
 void spapr_irq_free(SpaprMachineState *spapr, int irq, int num)
@@ -602,7 +553,18 @@ void spapr_irq_free(SpaprMachineState *spapr, int irq, int 
num)
     assert((irq + num) <= (spapr->irq->nr_xirqs + SPAPR_XIRQ_BASE));
 
     for (i = irq; i < (irq + num); i++) {
-        spapr->irq->free(spapr, irq);
+        if (spapr->xive) {
+            SpaprInterruptController *intc = SPAPR_INTC(spapr->xive);
+            SpaprInterruptControllerClass *sicc = SPAPR_INTC_GET_CLASS(intc);
+
+            sicc->free_irq(intc, irq);
+        }
+        if (spapr->ics) {
+            SpaprInterruptController *intc = SPAPR_INTC(spapr->ics);
+            SpaprInterruptControllerClass *sicc = SPAPR_INTC_GET_CLASS(intc);
+
+            sicc->free_irq(intc, irq);
+        }
     }
 }
 
@@ -727,8 +689,6 @@ SpaprIrq spapr_irq_xics_legacy = {
     .xics        = true,
     .xive        = false,
 
-    .claim       = spapr_irq_claim_xics,
-    .free        = spapr_irq_free_xics,
     .print_info  = spapr_irq_print_info_xics,
     .dt_populate = spapr_dt_xics,
     .post_load   = spapr_irq_post_load_xics,
diff --git a/include/hw/ppc/spapr_irq.h b/include/hw/ppc/spapr_irq.h
index 30d660ff1e..616086f9bb 100644
--- a/include/hw/ppc/spapr_irq.h
+++ b/include/hw/ppc/spapr_irq.h
@@ -50,6 +50,9 @@ typedef struct SpaprInterruptControllerClass {
      */
     int (*cpu_intc_create)(SpaprInterruptController *intc,
                             PowerPCCPU *cpu, Error **errp);
+    int (*claim_irq)(SpaprInterruptController *intc, int irq, bool lsi,
+                     Error **errp);
+    void (*free_irq)(SpaprInterruptController *intc, int irq);
 } SpaprInterruptControllerClass;
 
 void spapr_irq_print_info(SpaprMachineState *spapr, Monitor *mon);
@@ -70,8 +73,6 @@ typedef struct SpaprIrq {
     bool        xics;
     bool        xive;
 
-    int (*claim)(SpaprMachineState *spapr, int irq, bool lsi, Error **errp);
-    void (*free)(SpaprMachineState *spapr, int irq);
     void (*print_info)(SpaprMachineState *spapr, Monitor *mon);
     void (*dt_populate)(SpaprMachineState *spapr, uint32_t nr_servers,
                         void *fdt, uint32_t phandle);
diff --git a/include/hw/ppc/spapr_xive.h b/include/hw/ppc/spapr_xive.h
index 0df20a6590..8f875673f5 100644
--- a/include/hw/ppc/spapr_xive.h
+++ b/include/hw/ppc/spapr_xive.h
@@ -54,8 +54,6 @@ typedef struct SpaprXive {
  */
 #define SPAPR_XIVE_BLOCK_ID 0x0
 
-int spapr_xive_irq_claim(SpaprXive *xive, int lisn, bool lsi, Error **errp);
-void spapr_xive_irq_free(SpaprXive *xive, int lisn);
 void spapr_xive_pic_print_info(SpaprXive *xive, Monitor *mon);
 int spapr_xive_post_load(SpaprXive *xive, int version_id);
 
-- 
2.21.0