[PATCH v3 00/12] ppc/pnv: remove the use of qdev_get_machine()

[PATCH v3 00/12] ppc/pnv: remove the use of qdev_get_machine()

[Cédric Le Goater]

Hello,

The PowerNV and sPAPR machine use qdev_get_machine() in some places.
This is not a good modeling pratice and it should be avoided. This
series replaces the use of this routine with a set of QOM properties
and aliases.

Thanks,

C.

Changes since v2:

 - rebase on latest ppc tree
 - dropped get_system_memory() removal
 - addition of a couple of cleanup patches of the PSI model from Greg

Changes since v1:

 - fixed a missing assert(chip->system_memory)
 - introduced a XivePresenter link under XiveTCTX
 
Cédric Le Goater (3):
  ppc/pnv: Introduce a "xics" property alias under the PSI model
  ppc/pnv: Introduce a "xics" property under the POWER8 chip
  xive: Add a "presenter" link property to the TCTX object

Greg Kurz (9):
  pnv/xive: Use device_class_set_parent_realize()
  spapr, pnv, xive: Add a "xive-fabric" link to the XIVE router
  xive: Use the XIVE fabric link under the XIVE router
  ppc/pnv: Add an "nr-threads" property to the base chip class
  ppc/pnv: Add a "pnor" const link property to the BMC internal
    simulator
  spapr/xive: Deduce the SpaprXive pointer from XiveTCTX::xptr
  pnv/xive: Deduce the PnvXive pointer from XiveTCTX::xptr
  pnv/psi: Add device reset hook
  pnv/psi: Consolidate some duplicated code in pnv_psi_realize()

 include/hw/ppc/pnv.h      |  7 +++--
 include/hw/ppc/pnv_xive.h | 10 +++++++
 include/hw/ppc/xive.h     | 13 +++++----
 hw/intc/pnv_xive.c        | 18 ++++++++----
 hw/intc/spapr_xive.c      |  2 +-
 hw/intc/spapr_xive_kvm.c  |  9 +++---
 hw/intc/xive.c            | 28 ++++++++++++++++---
 hw/ppc/pnv.c              | 59 ++++++++++++++++++++++-----------------
 hw/ppc/pnv_bmc.c          |  8 ++++--
 hw/ppc/pnv_psi.c          | 43 ++++++++++++++++------------
 hw/ppc/spapr_irq.c        |  2 ++
 11 files changed, 129 insertions(+), 70 deletions(-)

-- 
2.21.1

[PATCH v3 01/12] ppc/pnv: Introduce a "xics" property alias under the PSI model

[Cédric Le Goater]

This removes the need of the intermediate link under PSI to pass the
XICS link to the underlying ICSState object.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
---
 hw/ppc/pnv.c     |  4 ++--
 hw/ppc/pnv_psi.c | 11 ++---------
 2 files changed, 4 insertions(+), 11 deletions(-)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 855254f28263..230bb9f31235 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -992,8 +992,6 @@ static void pnv_chip_power8_instance_init(Object *obj)
 
     object_initialize_child(obj, "psi",  &chip8->psi, sizeof(chip8->psi),
                             TYPE_PNV8_PSI, &error_abort, NULL);
-    object_property_add_const_link(OBJECT(&chip8->psi), "xics",
-                                   OBJECT(qdev_get_machine()), &error_abort);
 
     object_initialize_child(obj, "lpc",  &chip8->lpc, sizeof(chip8->lpc),
                             TYPE_PNV8_LPC, &error_abort, NULL);
@@ -1060,6 +1058,8 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
     /* Processor Service Interface (PSI) Host Bridge */
     object_property_set_int(OBJECT(&chip8->psi), PNV_PSIHB_BASE(chip),
                             "bar", &error_fatal);
+    object_property_set_link(OBJECT(&chip8->psi), OBJECT(qdev_get_machine()),
+                             ICS_PROP_XICS, &error_abort);
     object_property_set_bool(OBJECT(&chip8->psi), true, "realized", &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
index 75e20d9da08b..4da3d2568624 100644
--- a/hw/ppc/pnv_psi.c
+++ b/hw/ppc/pnv_psi.c
@@ -470,6 +470,8 @@ static void pnv_psi_power8_instance_init(Object *obj)
 
     object_initialize_child(obj, "ics-psi",  &psi8->ics, sizeof(psi8->ics),
                             TYPE_ICS, &error_abort, NULL);
+    object_property_add_alias(obj, ICS_PROP_XICS, OBJECT(&psi8->ics),
+                              ICS_PROP_XICS, &error_abort);
 }
 
 static const uint8_t irq_to_xivr[] = {
@@ -485,19 +487,10 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
 {
     PnvPsi *psi = PNV_PSI(dev);
     ICSState *ics = &PNV8_PSI(psi)->ics;
-    Object *obj;
     Error *err = NULL;
     unsigned int i;
 
-    obj = object_property_get_link(OBJECT(dev), "xics", &err);
-    if (!obj) {
-        error_setg(errp, "%s: required link 'xics' not found: %s",
-                   __func__, error_get_pretty(err));
-        return;
-    }
-
     /* Create PSI interrupt control source */
-    object_property_set_link(OBJECT(ics), obj, ICS_PROP_XICS, &error_abort);
     object_property_set_int(OBJECT(ics), PSI_NUM_INTERRUPTS, "nr-irqs", &err);
     if (err) {
         error_propagate(errp, err);
-- 
2.21.1

[PATCH v3 02/12] ppc/pnv: Introduce a "xics" property under the POWER8 chip

[Cédric Le Goater]

POWER8 is the only chip using the XICS interface. Add a "xics" link
and a XICSFabric attribute under this chip to remove the use of
qdev_get_machine()

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 include/hw/ppc/pnv.h |  2 ++
 hw/ppc/pnv.c         | 24 +++++++++++++++++++-----
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index f78fd0dd967c..56277862dd53 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -72,6 +72,8 @@ typedef struct Pnv8Chip {
     Pnv8Psi      psi;
     PnvOCC       occ;
     PnvHomer     homer;
+
+    XICSFabric    *xics;
 } Pnv8Chip;
 
 #define TYPE_PNV9_CHIP "pnv9-chip"
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 230bb9f31235..a0e0e43610a2 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -790,6 +790,13 @@ static void pnv_init(MachineState *machine)
                                 &error_fatal);
         object_property_set_int(chip, machine->smp.cores,
                                 "nr-cores", &error_fatal);
+        /*
+         * The POWER8 machine use the XICS interrupt interface.
+         * Propagate the XICS fabric to the chip and its controllers.
+         */
+        if (object_dynamic_cast(OBJECT(pnv), TYPE_XICS_FABRIC)) {
+            object_property_set_link(chip, OBJECT(pnv), "xics", &error_abort);
+        }
         object_property_set_bool(chip, true, "realized", &error_fatal);
     }
     g_free(chip_typename);
@@ -831,12 +838,12 @@ static uint32_t pnv_chip_core_pir_p8(PnvChip *chip, uint32_t core_id)
 static void pnv_chip_power8_intc_create(PnvChip *chip, PowerPCCPU *cpu,
                                         Error **errp)
 {
+    Pnv8Chip *chip8 = PNV8_CHIP(chip);
     Error *local_err = NULL;
     Object *obj;
     PnvCPUState *pnv_cpu = pnv_cpu_state(cpu);
 
-    obj = icp_create(OBJECT(cpu), TYPE_PNV_ICP, XICS_FABRIC(qdev_get_machine()),
-                     &local_err);
+    obj = icp_create(OBJECT(cpu), TYPE_PNV_ICP, chip8->xics, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -990,6 +997,12 @@ static void pnv_chip_power8_instance_init(Object *obj)
 {
     Pnv8Chip *chip8 = PNV8_CHIP(obj);
 
+    object_property_add_link(obj, "xics", TYPE_XICS_FABRIC,
+                             (Object **)&chip8->xics,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_STRONG,
+                             &error_abort);
+
     object_initialize_child(obj, "psi",  &chip8->psi, sizeof(chip8->psi),
                             TYPE_PNV8_PSI, &error_abort, NULL);
 
@@ -1009,7 +1022,6 @@ static void pnv_chip_icp_realize(Pnv8Chip *chip8, Error **errp)
     PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
     int i, j;
     char *name;
-    XICSFabric *xi = XICS_FABRIC(qdev_get_machine());
 
     name = g_strdup_printf("icp-%x", chip->chip_id);
     memory_region_init(&chip8->icp_mmio, OBJECT(chip), name, PNV_ICP_SIZE);
@@ -1025,7 +1037,7 @@ static void pnv_chip_icp_realize(Pnv8Chip *chip8, Error **errp)
 
         for (j = 0; j < CPU_CORE(pnv_core)->nr_threads; j++) {
             uint32_t pir = pcc->core_pir(chip, core_hwid) + j;
-            PnvICPState *icp = PNV_ICP(xics_icp_get(xi, pir));
+            PnvICPState *icp = PNV_ICP(xics_icp_get(chip8->xics, pir));
 
             memory_region_add_subregion(&chip8->icp_mmio, pir << 12,
                                         &icp->mmio);
@@ -1041,6 +1053,8 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
     Pnv8Psi *psi8 = &chip8->psi;
     Error *local_err = NULL;
 
+    assert(chip8->xics);
+
     /* XSCOM bridge is first */
     pnv_xscom_realize(chip, PNV_XSCOM_SIZE, &local_err);
     if (local_err) {
@@ -1058,7 +1072,7 @@ static void pnv_chip_power8_realize(DeviceState *dev, Error **errp)
     /* Processor Service Interface (PSI) Host Bridge */
     object_property_set_int(OBJECT(&chip8->psi), PNV_PSIHB_BASE(chip),
                             "bar", &error_fatal);
-    object_property_set_link(OBJECT(&chip8->psi), OBJECT(qdev_get_machine()),
+    object_property_set_link(OBJECT(&chip8->psi), OBJECT(chip8->xics),
                              ICS_PROP_XICS, &error_abort);
     object_property_set_bool(OBJECT(&chip8->psi), true, "realized", &local_err);
     if (local_err) {
-- 
2.21.1

[PATCH v3 03/12] pnv/xive: Use device_class_set_parent_realize()

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

The XIVE router base class currently inherits an empty realize hook
from the sysbus device base class, but it will soon implement one
of its own to perform some sanity checks. Do the preliminary plumbing
to have it called.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 include/hw/ppc/pnv_xive.h | 10 ++++++++++
 hw/intc/pnv_xive.c        | 10 ++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/hw/ppc/pnv_xive.h b/include/hw/ppc/pnv_xive.h
index f4c7caad40ee..76cf16f64472 100644
--- a/include/hw/ppc/pnv_xive.h
+++ b/include/hw/ppc/pnv_xive.h
@@ -16,6 +16,10 @@ struct PnvChip;
 
 #define TYPE_PNV_XIVE "pnv-xive"
 #define PNV_XIVE(obj) OBJECT_CHECK(PnvXive, (obj), TYPE_PNV_XIVE)
+#define PNV_XIVE_CLASS(klass)                                   \
+    OBJECT_CLASS_CHECK(PnvXiveClass, (klass), TYPE_PNV_XIVE)
+#define PNV_XIVE_GET_CLASS(obj)                                 \
+    OBJECT_GET_CLASS(PnvXiveClass, (obj), TYPE_PNV_XIVE)
 
 #define XIVE_BLOCK_MAX      16
 
@@ -85,6 +89,12 @@ typedef struct PnvXive {
     uint64_t      edt[XIVE_TABLE_EDT_MAX];
 } PnvXive;
 
+typedef struct PnvXiveClass {
+    XiveRouterClass parent_class;
+
+    DeviceRealize parent_realize;
+} PnvXiveClass;
+
 void pnv_xive_pic_print_info(PnvXive *xive, Monitor *mon);
 
 #endif /* PPC_PNV_XIVE_H */
diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index a0a69b98a713..6412cf222eae 100644
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -1816,10 +1816,17 @@ static void pnv_xive_init(Object *obj)
 static void pnv_xive_realize(DeviceState *dev, Error **errp)
 {
     PnvXive *xive = PNV_XIVE(dev);
+    PnvXiveClass *pxc = PNV_XIVE_GET_CLASS(dev);
     XiveSource *xsrc = &xive->ipi_source;
     XiveENDSource *end_xsrc = &xive->end_source;
     Error *local_err = NULL;
 
+    pxc->parent_realize(dev, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
     assert(xive->chip);
 
     /*
@@ -1947,10 +1954,12 @@ static void pnv_xive_class_init(ObjectClass *klass, void *data)
     XiveRouterClass *xrc = XIVE_ROUTER_CLASS(klass);
     XiveNotifierClass *xnc = XIVE_NOTIFIER_CLASS(klass);
     XivePresenterClass *xpc = XIVE_PRESENTER_CLASS(klass);
+    PnvXiveClass *pxc = PNV_XIVE_CLASS(klass);
 
     xdc->dt_xscom = pnv_xive_dt_xscom;
 
     dc->desc = "PowerNV XIVE Interrupt Controller";
+    device_class_set_parent_realize(dc, pnv_xive_realize, &pxc->parent_realize);
     dc->realize = pnv_xive_realize;
     dc->props = pnv_xive_properties;
 
@@ -1971,6 +1980,7 @@ static const TypeInfo pnv_xive_info = {
     .instance_init = pnv_xive_init,
     .instance_size = sizeof(PnvXive),
     .class_init    = pnv_xive_class_init,
+    .class_size    = sizeof(PnvXiveClass),
     .interfaces    = (InterfaceInfo[]) {
         { TYPE_PNV_XSCOM_INTERFACE },
         { }
-- 
2.21.1

[PATCH v3 04/12] spapr, pnv, xive: Add a "xive-fabric" link to the XIVE router

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

In order to get rid of qdev_get_machine(), first add a pointer to the
XIVE fabric under the XIVE router and make it configurable through a
QOM link property.

Configure it in the spapr and pnv machine. In the case of pnv, the XIVE
routers are under the chip, so this is done with a QOM alias property of
the POWER9 pnv chip.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/ppc/xive.h | 5 +++--
 hw/intc/xive.c        | 8 ++++++++
 hw/ppc/pnv.c          | 6 ++++++
 hw/ppc/spapr_irq.c    | 2 ++
 4 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 1b7b89098f71..1ded82b1cda8 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -324,9 +324,12 @@ typedef struct XiveTCTX {
 /*
  * XIVE Router
  */
+typedef struct XiveFabric XiveFabric;
 
 typedef struct XiveRouter {
     SysBusDevice    parent;
+
+    XiveFabric *xfb;
 } XiveRouter;
 
 #define TYPE_XIVE_ROUTER "xive-router"
@@ -402,8 +405,6 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
  * XIVE Fabric (Interface between Interrupt Controller and Machine)
  */
 
-typedef struct XiveFabric XiveFabric;
-
 #define TYPE_XIVE_FABRIC "xive-fabric"
 #define XIVE_FABRIC(obj)                                     \
     INTERFACE_CHECK(XiveFabric, (obj), TYPE_XIVE_FABRIC)
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index d4c6e21703b3..6df89b06da38 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -1714,12 +1714,19 @@ void xive_router_notify(XiveNotifier *xn, uint32_t lisn)
                            xive_get_field64(EAS_END_DATA,  eas.w));
 }
 
+static Property xive_router_properties[] = {
+    DEFINE_PROP_LINK("xive-fabric", XiveRouter, xfb,
+                     TYPE_XIVE_FABRIC, XiveFabric *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void xive_router_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     XiveNotifierClass *xnc = XIVE_NOTIFIER_CLASS(klass);
 
     dc->desc    = "XIVE Router Engine";
+    dc->props   = xive_router_properties;
     xnc->notify = xive_router_notify;
 }
 
@@ -1727,6 +1734,7 @@ static const TypeInfo xive_router_info = {
     .name          = TYPE_XIVE_ROUTER,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .abstract      = true,
+    .instance_size = sizeof(XiveRouter),
     .class_size    = sizeof(XiveRouterClass),
     .class_init    = xive_router_class_init,
     .interfaces    = (InterfaceInfo[]) {
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index a0e0e43610a2..6d003144b6fc 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -797,6 +797,10 @@ static void pnv_init(MachineState *machine)
         if (object_dynamic_cast(OBJECT(pnv), TYPE_XICS_FABRIC)) {
             object_property_set_link(chip, OBJECT(pnv), "xics", &error_abort);
         }
+        if (object_dynamic_cast(OBJECT(pnv), TYPE_XIVE_FABRIC)) {
+            object_property_set_link(chip, OBJECT(pnv), "xive-fabric",
+                                     &error_abort);
+        }
         object_property_set_bool(chip, true, "realized", &error_fatal);
     }
     g_free(chip_typename);
@@ -1215,6 +1219,8 @@ static void pnv_chip_power9_instance_init(Object *obj)
 
     object_initialize_child(obj, "xive", &chip9->xive, sizeof(chip9->xive),
                             TYPE_PNV_XIVE, &error_abort, NULL);
+    object_property_add_alias(obj, "xive-fabric", OBJECT(&chip9->xive),
+                              "xive-fabric", &error_abort);
 
     object_initialize_child(obj, "psi",  &chip9->psi, sizeof(chip9->psi),
                             TYPE_PNV9_PSI, &error_abort, NULL);
diff --git a/hw/ppc/spapr_irq.c b/hw/ppc/spapr_irq.c
index 373505d28b9a..1f630f296bd5 100644
--- a/hw/ppc/spapr_irq.c
+++ b/hw/ppc/spapr_irq.c
@@ -332,6 +332,8 @@ void spapr_irq_init(SpaprMachineState *spapr, Error **errp)
          * priority
          */
         qdev_prop_set_uint32(dev, "nr-ends", nr_servers << 3);
+        object_property_set_link(OBJECT(dev), OBJECT(spapr), "xive-fabric",
+                                 &error_abort);
         qdev_init_nofail(dev);
 
         spapr->xive = SPAPR_XIVE(dev);
-- 
2.21.1

[PATCH v3 05/12] xive: Use the XIVE fabric link under the XIVE router

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

Now that the spapr and pnv machines do set the "xive-fabric" link, the
use of the XIVE fabric pointer becomes mandatory. This is checked with
an assert() in a new realize hook. Since the XIVE router is realized at
machine init for the all the machine's life time, no risk to abort an
already running guest (ie. not a hotplug path).

This gets rid of a qdev_get_machine() call.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/intc/xive.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 6df89b06da38..12a362b681a6 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -1378,6 +1378,13 @@ static int xive_router_get_block_id(XiveRouter *xrtr)
    return xrc->get_block_id(xrtr);
 }
 
+static void xive_router_realize(DeviceState *dev, Error **errp)
+{
+    XiveRouter *xrtr = XIVE_ROUTER(dev);
+
+    assert(xrtr->xfb);
+}
+
 /*
  * Encode the HW CAM line in the block group mode format :
  *
@@ -1470,12 +1477,11 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
  *
  * The parameters represent what is sent on the PowerBus
  */
-static bool xive_presenter_notify(uint8_t format,
+static bool xive_presenter_notify(XiveFabric *xfb, uint8_t format,
                                   uint8_t nvt_blk, uint32_t nvt_idx,
                                   bool cam_ignore, uint8_t priority,
                                   uint32_t logic_serv)
 {
-    XiveFabric *xfb = XIVE_FABRIC(qdev_get_machine());
     XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xfb);
     XiveTCTXMatch match = { .tctx = NULL, .ring = 0 };
     int count;
@@ -1607,7 +1613,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
         return;
     }
 
-    found = xive_presenter_notify(format, nvt_blk, nvt_idx,
+    found = xive_presenter_notify(xrtr->xfb, format, nvt_blk, nvt_idx,
                           xive_get_field32(END_W7_F0_IGNORE, end.w7),
                           priority,
                           xive_get_field32(END_W7_F1_LOG_SERVER_ID, end.w7));
@@ -1727,6 +1733,8 @@ static void xive_router_class_init(ObjectClass *klass, void *data)
 
     dc->desc    = "XIVE Router Engine";
     dc->props   = xive_router_properties;
+    /* Parent is SysBusDeviceClass. No need to call its realize hook */
+    dc->realize = xive_router_realize;
     xnc->notify = xive_router_notify;
 }
 
-- 
2.21.1

Re: [PATCH v3 05/12] xive: Use the XIVE fabric link under the XIVE router

[David Gibson]

[-- Attachment #1: Type: text/plain, Size: 2971 bytes --]

On Mon, Jan 06, 2020 at 03:56:38PM +0100, Cédric Le Goater wrote:
> From: Greg Kurz <groug@kaod.org>
> 
> Now that the spapr and pnv machines do set the "xive-fabric" link, the
> use of the XIVE fabric pointer becomes mandatory. This is checked with
> an assert() in a new realize hook. Since the XIVE router is realized at
> machine init for the all the machine's life time, no risk to abort an
> already running guest (ie. not a hotplug path).
> 
> This gets rid of a qdev_get_machine() call.
> 
> Signed-off-by: Greg Kurz <groug@kaod.org>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

1..5 applied to ppc-for-5.0.

> ---
>  hw/intc/xive.c | 14 +++++++++++---
>  1 file changed, 11 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/intc/xive.c b/hw/intc/xive.c
> index 6df89b06da38..12a362b681a6 100644
> --- a/hw/intc/xive.c
> +++ b/hw/intc/xive.c
> @@ -1378,6 +1378,13 @@ static int xive_router_get_block_id(XiveRouter *xrtr)
>     return xrc->get_block_id(xrtr);
>  }
>  
> +static void xive_router_realize(DeviceState *dev, Error **errp)
> +{
> +    XiveRouter *xrtr = XIVE_ROUTER(dev);
> +
> +    assert(xrtr->xfb);
> +}
> +
>  /*
>   * Encode the HW CAM line in the block group mode format :
>   *
> @@ -1470,12 +1477,11 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
>   *
>   * The parameters represent what is sent on the PowerBus
>   */
> -static bool xive_presenter_notify(uint8_t format,
> +static bool xive_presenter_notify(XiveFabric *xfb, uint8_t format,
>                                    uint8_t nvt_blk, uint32_t nvt_idx,
>                                    bool cam_ignore, uint8_t priority,
>                                    uint32_t logic_serv)
>  {
> -    XiveFabric *xfb = XIVE_FABRIC(qdev_get_machine());
>      XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xfb);
>      XiveTCTXMatch match = { .tctx = NULL, .ring = 0 };
>      int count;
> @@ -1607,7 +1613,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
>          return;
>      }
>  
> -    found = xive_presenter_notify(format, nvt_blk, nvt_idx,
> +    found = xive_presenter_notify(xrtr->xfb, format, nvt_blk, nvt_idx,
>                            xive_get_field32(END_W7_F0_IGNORE, end.w7),
>                            priority,
>                            xive_get_field32(END_W7_F1_LOG_SERVER_ID, end.w7));
> @@ -1727,6 +1733,8 @@ static void xive_router_class_init(ObjectClass *klass, void *data)
>  
>      dc->desc    = "XIVE Router Engine";
>      dc->props   = xive_router_properties;
> +    /* Parent is SysBusDeviceClass. No need to call its realize hook */
> +    dc->realize = xive_router_realize;
>      xnc->notify = xive_router_notify;
>  }
>  

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

[PATCH v3 06/12] ppc/pnv: Add an "nr-threads" property to the base chip class

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

Set it at chip creation and forward it to the cores. This allows to drop
a call to qdev_get_machine().

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 include/hw/ppc/pnv.h | 1 +
 hw/ppc/pnv.c         | 8 +++++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index 56277862dd53..4b9012f9949e 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -48,6 +48,7 @@ typedef struct PnvChip {
     uint64_t     ram_size;
 
     uint32_t     nr_cores;
+    uint32_t     nr_threads;
     uint64_t     cores_mask;
     PnvCore      **cores;
 
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 6d003144b6fc..8f072ea7eff1 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -790,6 +790,8 @@ static void pnv_init(MachineState *machine)
                                 &error_fatal);
         object_property_set_int(chip, machine->smp.cores,
                                 "nr-cores", &error_fatal);
+        object_property_set_int(chip, machine->smp.threads,
+                                "nr-threads", &error_fatal);
         /*
          * The POWER8 machine use the XICS interrupt interface.
          * Propagate the XICS fabric to the chip and its controllers.
@@ -1514,7 +1516,6 @@ static void pnv_chip_core_sanitize(PnvChip *chip, Error **errp)
 
 static void pnv_chip_core_realize(PnvChip *chip, Error **errp)
 {
-    MachineState *ms = MACHINE(qdev_get_machine());
     Error *error = NULL;
     PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
     const char *typename = pnv_chip_core_typename(chip);
@@ -1550,8 +1551,8 @@ static void pnv_chip_core_realize(PnvChip *chip, Error **errp)
         object_property_add_child(OBJECT(chip), core_name, OBJECT(pnv_core),
                                   &error_abort);
         chip->cores[i] = pnv_core;
-        object_property_set_int(OBJECT(pnv_core), ms->smp.threads, "nr-threads",
-                                &error_fatal);
+        object_property_set_int(OBJECT(pnv_core), chip->nr_threads,
+                                "nr-threads", &error_fatal);
         object_property_set_int(OBJECT(pnv_core), core_hwid,
                                 CPU_CORE_PROP_CORE_ID, &error_fatal);
         object_property_set_int(OBJECT(pnv_core),
@@ -1590,6 +1591,7 @@ static Property pnv_chip_properties[] = {
     DEFINE_PROP_UINT64("ram-size", PnvChip, ram_size, 0),
     DEFINE_PROP_UINT32("nr-cores", PnvChip, nr_cores, 1),
     DEFINE_PROP_UINT64("cores-mask", PnvChip, cores_mask, 0x0),
+    DEFINE_PROP_UINT32("nr-threads", PnvChip, nr_threads, 1),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.21.1

[PATCH v3 07/12] ppc/pnv: Add a "pnor" const link property to the BMC internal simulator

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

This allows to get rid of a call to qdev_get_machine().

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/ppc/pnv.h | 2 +-
 hw/ppc/pnv.c         | 2 +-
 hw/ppc/pnv_bmc.c     | 8 +++++---
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index 4b9012f9949e..2504d8cd4f6b 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -229,7 +229,7 @@ PnvChip *pnv_get_chip(uint32_t chip_id);
  */
 void pnv_dt_bmc_sensors(IPMIBmc *bmc, void *fdt);
 void pnv_bmc_powerdown(IPMIBmc *bmc);
-IPMIBmc *pnv_bmc_create(void);
+IPMIBmc *pnv_bmc_create(PnvPnor *pnor);
 
 /*
  * POWER8 MMIO base addresses
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 8f072ea7eff1..b2e3d11ad000 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -808,7 +808,7 @@ static void pnv_init(MachineState *machine)
     g_free(chip_typename);
 
     /* Create the machine BMC simulator */
-    pnv->bmc = pnv_bmc_create();
+    pnv->bmc = pnv_bmc_create(pnv->pnor);
 
     /* Instantiate ISA bus on chip 0 */
     pnv->isa_bus = pnv_isa_create(pnv->chips[0], &error_fatal);
diff --git a/hw/ppc/pnv_bmc.c b/hw/ppc/pnv_bmc.c
index 07fa1e1c7e45..8863354c1c08 100644
--- a/hw/ppc/pnv_bmc.c
+++ b/hw/ppc/pnv_bmc.c
@@ -143,8 +143,8 @@ static uint16_t bytes_to_blocks(uint32_t bytes)
 static void hiomap_cmd(IPMIBmcSim *ibs, uint8_t *cmd, unsigned int cmd_len,
                        RspBuffer *rsp)
 {
-    PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
-    PnvPnor *pnor = pnv->pnor;
+    PnvPnor *pnor = PNV_PNOR(object_property_get_link(OBJECT(ibs), "pnor",
+                                                      &error_abort));
     uint32_t pnor_size = pnor->size;
     uint32_t pnor_addr = PNOR_SPI_OFFSET;
     bool readonly = false;
@@ -217,11 +217,13 @@ static const IPMINetfn hiomap_netfn = {
  * Instantiate the machine BMC. PowerNV uses the QEMU internal
  * simulator but it could also be external.
  */
-IPMIBmc *pnv_bmc_create(void)
+IPMIBmc *pnv_bmc_create(PnvPnor *pnor)
 {
     Object *obj;
 
     obj = object_new(TYPE_IPMI_BMC_SIMULATOR);
+    object_ref(OBJECT(pnor));
+    object_property_add_const_link(obj, "pnor", OBJECT(pnor), &error_abort);
     object_property_set_bool(obj, true, "realized", &error_fatal);
 
     /* Install the HIOMAP protocol handlers to access the PNOR */
-- 
2.21.1

[PATCH v3 08/12] xive: Add a "presenter" link property to the TCTX object

[Cédric Le Goater]

This will be used in subsequent patches to access the XIVE associated to
a TCTX without reaching out to the machine through qdev_get_machine().

Signed-off-by: Cédric Le Goater <clg@kaod.org>
[ groug: - split patch
         - write subject and changelog ]
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/ppc/xive.h | 8 +++++---
 hw/intc/spapr_xive.c  | 2 +-
 hw/intc/xive.c        | 6 +++++-
 hw/ppc/pnv.c          | 3 ++-
 4 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/include/hw/ppc/xive.h b/include/hw/ppc/xive.h
index 1ded82b1cda8..705cf48176fc 100644
--- a/include/hw/ppc/xive.h
+++ b/include/hw/ppc/xive.h
@@ -311,6 +311,8 @@ void xive_source_set_irq(void *opaque, int srcno, int val);
 #define XIVE_TM_RING_COUNT      4
 #define XIVE_TM_RING_SIZE       0x10
 
+typedef struct XivePresenter XivePresenter;
+
 typedef struct XiveTCTX {
     DeviceState parent_obj;
 
@@ -319,6 +321,8 @@ typedef struct XiveTCTX {
     qemu_irq    os_output;
 
     uint8_t     regs[XIVE_TM_RING_COUNT * XIVE_TM_RING_SIZE];
+
+    XivePresenter *xptr;
 } XiveTCTX;
 
 /*
@@ -378,8 +382,6 @@ typedef struct XiveTCTXMatch {
     uint8_t ring;
 } XiveTCTXMatch;
 
-typedef struct XivePresenter XivePresenter;
-
 #define TYPE_XIVE_PRESENTER "xive-presenter"
 #define XIVE_PRESENTER(obj)                                     \
     INTERFACE_CHECK(XivePresenter, (obj), TYPE_XIVE_PRESENTER)
@@ -467,7 +469,7 @@ uint64_t xive_tctx_tm_read(XivePresenter *xptr, XiveTCTX *tctx, hwaddr offset,
                            unsigned size);
 
 void xive_tctx_pic_print_info(XiveTCTX *tctx, Monitor *mon);
-Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp);
+Object *xive_tctx_create(Object *cpu, XivePresenter *xptr, Error **errp);
 void xive_tctx_reset(XiveTCTX *tctx);
 void xive_tctx_destroy(XiveTCTX *tctx);
 void xive_tctx_ipb_update(XiveTCTX *tctx, uint8_t ring, uint8_t ipb);
diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index 32322470a8b8..76631238783e 100644
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -601,7 +601,7 @@ static int spapr_xive_cpu_intc_create(SpaprInterruptController *intc,
     Object *obj;
     SpaprCpuState *spapr_cpu = spapr_cpu_state(cpu);
 
-    obj = xive_tctx_create(OBJECT(cpu), XIVE_ROUTER(xive), errp);
+    obj = xive_tctx_create(OBJECT(cpu), XIVE_PRESENTER(xive), errp);
     if (!obj) {
         return -1;
     }
diff --git a/hw/intc/xive.c b/hw/intc/xive.c
index 12a362b681a6..bc8019c4c973 100644
--- a/hw/intc/xive.c
+++ b/hw/intc/xive.c
@@ -654,6 +654,7 @@ static void xive_tctx_realize(DeviceState *dev, Error **errp)
     Error *local_err = NULL;
 
     assert(tctx->cs);
+    assert(tctx->xptr);
 
     cpu = POWERPC_CPU(tctx->cs);
     env = &cpu->env;
@@ -727,6 +728,8 @@ static const VMStateDescription vmstate_xive_tctx = {
 
 static Property xive_tctx_properties[] = {
     DEFINE_PROP_LINK("cpu", XiveTCTX, cs, TYPE_CPU, CPUState *),
+    DEFINE_PROP_LINK("presenter", XiveTCTX, xptr, TYPE_XIVE_PRESENTER,
+                     XivePresenter *),
     DEFINE_PROP_END_OF_LIST(),
 };
 
@@ -752,7 +755,7 @@ static const TypeInfo xive_tctx_info = {
     .class_init    = xive_tctx_class_init,
 };
 
-Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp)
+Object *xive_tctx_create(Object *cpu, XivePresenter *xptr, Error **errp)
 {
     Error *local_err = NULL;
     Object *obj;
@@ -761,6 +764,7 @@ Object *xive_tctx_create(Object *cpu, XiveRouter *xrtr, Error **errp)
     object_property_add_child(cpu, TYPE_XIVE_TCTX, obj, &error_abort);
     object_unref(obj);
     object_property_set_link(obj, cpu, "cpu", &error_abort);
+    object_property_set_link(obj, OBJECT(xptr), "presenter", &error_abort);
     object_property_set_bool(obj, true, "realized", &local_err);
     if (local_err) {
         goto error;
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index b2e3d11ad000..de44c7ddb304 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -913,7 +913,8 @@ static void pnv_chip_power9_intc_create(PnvChip *chip, PowerPCCPU *cpu,
      * controller object is initialized afterwards. Hopefully, it's
      * only used at runtime.
      */
-    obj = xive_tctx_create(OBJECT(cpu), XIVE_ROUTER(&chip9->xive), &local_err);
+    obj = xive_tctx_create(OBJECT(cpu), XIVE_PRESENTER(&chip9->xive),
+                           &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
-- 
2.21.1

[PATCH v3 09/12] spapr/xive: Deduce the SpaprXive pointer from XiveTCTX::xptr

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

And use it instead of reaching out to the machine. This allows to get rid
of a call to qdev_get_machine() and to reduce the scope of another one so
that it is only used within the argument list of error_append_hint(). This
is an acceptable tradeoff compared to all it would require to know about
the maximum number of CPUs here without calling qdev_get_machine().

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/intc/spapr_xive_kvm.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hw/intc/spapr_xive_kvm.c b/hw/intc/spapr_xive_kvm.c
index 32b2809210a0..edb7ee0e74f1 100644
--- a/hw/intc/spapr_xive_kvm.c
+++ b/hw/intc/spapr_xive_kvm.c
@@ -75,7 +75,7 @@ static void kvm_cpu_disable_all(void)
 
 void kvmppc_xive_cpu_set_state(XiveTCTX *tctx, Error **errp)
 {
-    SpaprXive *xive = SPAPR_MACHINE(qdev_get_machine())->xive;
+    SpaprXive *xive = SPAPR_XIVE(tctx->xptr);
     uint64_t state[2];
     int ret;
 
@@ -97,7 +97,7 @@ void kvmppc_xive_cpu_set_state(XiveTCTX *tctx, Error **errp)
 
 void kvmppc_xive_cpu_get_state(XiveTCTX *tctx, Error **errp)
 {
-    SpaprXive *xive = SPAPR_MACHINE(qdev_get_machine())->xive;
+    SpaprXive *xive = SPAPR_XIVE(tctx->xptr);
     uint64_t state[2] = { 0 };
     int ret;
 
@@ -152,8 +152,7 @@ void kvmppc_xive_cpu_synchronize_state(XiveTCTX *tctx, Error **errp)
 
 void kvmppc_xive_cpu_connect(XiveTCTX *tctx, Error **errp)
 {
-    MachineState *ms = MACHINE(qdev_get_machine());
-    SpaprXive *xive = SPAPR_MACHINE(ms)->xive;
+    SpaprXive *xive = SPAPR_XIVE(tctx->xptr);
     unsigned long vcpu_id;
     int ret;
 
@@ -179,7 +178,7 @@ void kvmppc_xive_cpu_connect(XiveTCTX *tctx, Error **errp)
                    vcpu_id, strerror(errno));
         if (errno == ENOSPC) {
             error_append_hint(&local_err, "Try -smp maxcpus=N with N < %u\n",
-                              ms->smp.max_cpus);
+                              MACHINE(qdev_get_machine())->smp.max_cpus);
         }
         error_propagate(errp, local_err);
         return;
-- 
2.21.1

[PATCH v3 10/12] pnv/xive: Deduce the PnvXive pointer from XiveTCTX::xptr

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

And use it instead of reaching out to the machine. This allows to get
rid of pnv_get_chip().

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/ppc/pnv.h |  2 --
 hw/intc/pnv_xive.c   |  8 ++------
 hw/ppc/pnv.c         | 14 --------------
 3 files changed, 2 insertions(+), 22 deletions(-)

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index 2504d8cd4f6b..d65dd32036c8 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -219,8 +219,6 @@ struct PnvMachineState {
     PnvPnor      *pnor;
 };
 
-PnvChip *pnv_get_chip(uint32_t chip_id);
-
 #define PNV_FDT_ADDR          0x01000000
 #define PNV_TIMEBASE_FREQ     512000000ULL
 
diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
index 6412cf222eae..715fca61ae22 100644
--- a/hw/intc/pnv_xive.c
+++ b/hw/intc/pnv_xive.c
@@ -472,12 +472,8 @@ static uint8_t pnv_xive_get_block_id(XiveRouter *xrtr)
 static PnvXive *pnv_xive_tm_get_xive(PowerPCCPU *cpu)
 {
     int pir = ppc_cpu_pir(cpu);
-    PnvChip *chip;
-    PnvXive *xive;
-
-    chip = pnv_get_chip(PNV9_PIR2CHIP(pir));
-    assert(chip);
-    xive = &PNV9_CHIP(chip)->xive;
+    XivePresenter *xptr = XIVE_TCTX(pnv_cpu_state(cpu)->intc)->xptr;
+    PnvXive *xive = PNV_XIVE(xptr);
 
     if (!pnv_xive_is_cpu_enabled(xive, cpu)) {
         xive_error(xive, "IC: CPU %x is not enabled", pir);
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index de44c7ddb304..924b8dc592fe 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1705,20 +1705,6 @@ static int pnv_match_nvt(XiveFabric *xfb, uint8_t format,
     return total_count;
 }
 
-PnvChip *pnv_get_chip(uint32_t chip_id)
-{
-    PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
-    int i;
-
-    for (i = 0; i < pnv->num_chips; i++) {
-        PnvChip *chip = pnv->chips[i];
-        if (chip->chip_id == chip_id) {
-            return chip;
-        }
-    }
-    return NULL;
-}
-
 static void pnv_get_num_chips(Object *obj, Visitor *v, const char *name,
                               void *opaque, Error **errp)
 {
-- 
2.21.1

Re: [PATCH v3 10/12] pnv/xive: Deduce the PnvXive pointer from XiveTCTX::xptr

[David Gibson]

[-- Attachment #1: Type: text/plain, Size: 2596 bytes --]

On Mon, Jan 06, 2020 at 03:56:43PM +0100, Cédric Le Goater wrote:
> From: Greg Kurz <groug@kaod.org>
> 
> And use it instead of reaching out to the machine. This allows to get
> rid of pnv_get_chip().
> 
> Signed-off-by: Greg Kurz <groug@kaod.org>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>

6..10 applied to ppc-for-5.0.

> ---
>  include/hw/ppc/pnv.h |  2 --
>  hw/intc/pnv_xive.c   |  8 ++------
>  hw/ppc/pnv.c         | 14 --------------
>  3 files changed, 2 insertions(+), 22 deletions(-)
> 
> diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
> index 2504d8cd4f6b..d65dd32036c8 100644
> --- a/include/hw/ppc/pnv.h
> +++ b/include/hw/ppc/pnv.h
> @@ -219,8 +219,6 @@ struct PnvMachineState {
>      PnvPnor      *pnor;
>  };
>  
> -PnvChip *pnv_get_chip(uint32_t chip_id);
> -
>  #define PNV_FDT_ADDR          0x01000000
>  #define PNV_TIMEBASE_FREQ     512000000ULL
>  
> diff --git a/hw/intc/pnv_xive.c b/hw/intc/pnv_xive.c
> index 6412cf222eae..715fca61ae22 100644
> --- a/hw/intc/pnv_xive.c
> +++ b/hw/intc/pnv_xive.c
> @@ -472,12 +472,8 @@ static uint8_t pnv_xive_get_block_id(XiveRouter *xrtr)
>  static PnvXive *pnv_xive_tm_get_xive(PowerPCCPU *cpu)
>  {
>      int pir = ppc_cpu_pir(cpu);
> -    PnvChip *chip;
> -    PnvXive *xive;
> -
> -    chip = pnv_get_chip(PNV9_PIR2CHIP(pir));
> -    assert(chip);
> -    xive = &PNV9_CHIP(chip)->xive;
> +    XivePresenter *xptr = XIVE_TCTX(pnv_cpu_state(cpu)->intc)->xptr;
> +    PnvXive *xive = PNV_XIVE(xptr);
>  
>      if (!pnv_xive_is_cpu_enabled(xive, cpu)) {
>          xive_error(xive, "IC: CPU %x is not enabled", pir);
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index de44c7ddb304..924b8dc592fe 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -1705,20 +1705,6 @@ static int pnv_match_nvt(XiveFabric *xfb, uint8_t format,
>      return total_count;
>  }
>  
> -PnvChip *pnv_get_chip(uint32_t chip_id)
> -{
> -    PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
> -    int i;
> -
> -    for (i = 0; i < pnv->num_chips; i++) {
> -        PnvChip *chip = pnv->chips[i];
> -        if (chip->chip_id == chip_id) {
> -            return chip;
> -        }
> -    }
> -    return NULL;
> -}
> -
>  static void pnv_get_num_chips(Object *obj, Visitor *v, const char *name,
>                                void *opaque, Error **errp)
>  {

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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[PATCH v3 11/12] pnv/psi: Add device reset hook

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

And call it from a QEMU reset handler. This allows each PNV child class to
override the reset hook if needed, eg. POWER8 doesn't but POWER9 does.
The proper way to do that would be to use device_class_set_parent_reset(),
but defining a Pnv8PsiClass and a Pnv9PsiClass types with a parent_reset
pointer adds a fair amount of code. Calling pnv_psi_reset() explicitely is
fine for now.

A subsequent patch will consolidate the call to qemu_register_reset() in
a single place.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/pnv_psi.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
index 4da3d2568624..cf21e42d93b7 100644
--- a/hw/ppc/pnv_psi.c
+++ b/hw/ppc/pnv_psi.c
@@ -455,7 +455,7 @@ static const MemoryRegionOps pnv_psi_xscom_ops = {
     }
 };
 
-static void pnv_psi_reset(void *dev)
+static void pnv_psi_reset(DeviceState *dev)
 {
     PnvPsi *psi = PNV_PSI(dev);
 
@@ -464,6 +464,13 @@ static void pnv_psi_reset(void *dev)
     psi->regs[PSIHB_XSCOM_BAR] = psi->bar | PSIHB_BAR_EN;
 }
 
+static void pnv_psi_reset_handler(void *dev)
+{
+    DeviceClass *dc = DEVICE_GET_CLASS(dev);
+
+    dc->reset(DEVICE(dev));
+}
+
 static void pnv_psi_power8_instance_init(Object *obj)
 {
     Pnv8Psi *psi8 = PNV8_PSI(obj);
@@ -526,7 +533,7 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
             ((uint64_t) i << PSIHB_XIVR_SRC_SH);
     }
 
-    qemu_register_reset(pnv_psi_reset, dev);
+    qemu_register_reset(pnv_psi_reset_handler, dev);
 }
 
 static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
@@ -809,7 +816,7 @@ static void pnv_psi_power9_irq_set(PnvPsi *psi, int irq, bool state)
     qemu_set_irq(psi->qirqs[irq], state);
 }
 
-static void pnv_psi_power9_reset(void *dev)
+static void pnv_psi_power9_reset(DeviceState *dev)
 {
     Pnv9Psi *psi = PNV9_PSI(dev);
 
@@ -863,7 +870,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
 
     pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
 
-    qemu_register_reset(pnv_psi_power9_reset, dev);
+    qemu_register_reset(pnv_psi_reset_handler, dev);
 }
 
 static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
@@ -875,6 +882,7 @@ static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
 
     dc->desc    = "PowerNV PSI Controller POWER9";
     dc->realize = pnv_psi_power9_realize;
+    dc->reset   = pnv_psi_power9_reset;
 
     ppc->xscom_pcba = PNV9_XSCOM_PSIHB_BASE;
     ppc->xscom_size = PNV9_XSCOM_PSIHB_SIZE;
@@ -927,6 +935,7 @@ static void pnv_psi_class_init(ObjectClass *klass, void *data)
 
     dc->desc = "PowerNV PSI Controller";
     dc->props = pnv_psi_properties;
+    dc->reset = pnv_psi_reset;
 }
 
 static const TypeInfo pnv_psi_info = {
-- 
2.21.1

Re: [PATCH v3 11/12] pnv/psi: Add device reset hook

[David Gibson]

[-- Attachment #1: Type: text/plain, Size: 3528 bytes --]

On Mon, Jan 06, 2020 at 03:56:44PM +0100, Cédric Le Goater wrote:
> From: Greg Kurz <groug@kaod.org>
> 
> And call it from a QEMU reset handler. This allows each PNV child class to
> override the reset hook if needed, eg. POWER8 doesn't but POWER9 does.
> The proper way to do that would be to use device_class_set_parent_reset(),
> but defining a Pnv8PsiClass and a Pnv9PsiClass types with a parent_reset
> pointer adds a fair amount of code. Calling pnv_psi_reset() explicitely is
> fine for now.
> 
> A subsequent patch will consolidate the call to qemu_register_reset() in
> a single place.
> 
> Signed-off-by: Greg Kurz <groug@kaod.org>
> Signed-off-by: Cédric Le Goater <clg@kaod.org>
> ---
>  hw/ppc/pnv_psi.c | 17 +++++++++++++----
>  1 file changed, 13 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
> index 4da3d2568624..cf21e42d93b7 100644
> --- a/hw/ppc/pnv_psi.c
> +++ b/hw/ppc/pnv_psi.c
> @@ -455,7 +455,7 @@ static const MemoryRegionOps pnv_psi_xscom_ops = {
>      }
>  };
>  
> -static void pnv_psi_reset(void *dev)
> +static void pnv_psi_reset(DeviceState *dev)
>  {
>      PnvPsi *psi = PNV_PSI(dev);
>  
> @@ -464,6 +464,13 @@ static void pnv_psi_reset(void *dev)
>      psi->regs[PSIHB_XSCOM_BAR] = psi->bar | PSIHB_BAR_EN;
>  }
>  
> +static void pnv_psi_reset_handler(void *dev)
> +{
> +    DeviceClass *dc = DEVICE_GET_CLASS(dev);
> +
> +    dc->reset(DEVICE(dev));

I think it would be better to use device_reset() here rather than
explicitly accessing the dc->reset pointer yourself.

> +}
> +
>  static void pnv_psi_power8_instance_init(Object *obj)
>  {
>      Pnv8Psi *psi8 = PNV8_PSI(obj);
> @@ -526,7 +533,7 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
>              ((uint64_t) i << PSIHB_XIVR_SRC_SH);
>      }
>  
> -    qemu_register_reset(pnv_psi_reset, dev);
> +    qemu_register_reset(pnv_psi_reset_handler, dev);
>  }
>  
>  static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
> @@ -809,7 +816,7 @@ static void pnv_psi_power9_irq_set(PnvPsi *psi, int irq, bool state)
>      qemu_set_irq(psi->qirqs[irq], state);
>  }
>  
> -static void pnv_psi_power9_reset(void *dev)
> +static void pnv_psi_power9_reset(DeviceState *dev)
>  {
>      Pnv9Psi *psi = PNV9_PSI(dev);
>  
> @@ -863,7 +870,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
>  
>      pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
>  
> -    qemu_register_reset(pnv_psi_power9_reset, dev);
> +    qemu_register_reset(pnv_psi_reset_handler, dev);
>  }
>  
>  static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
> @@ -875,6 +882,7 @@ static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
>  
>      dc->desc    = "PowerNV PSI Controller POWER9";
>      dc->realize = pnv_psi_power9_realize;
> +    dc->reset   = pnv_psi_power9_reset;
>  
>      ppc->xscom_pcba = PNV9_XSCOM_PSIHB_BASE;
>      ppc->xscom_size = PNV9_XSCOM_PSIHB_SIZE;
> @@ -927,6 +935,7 @@ static void pnv_psi_class_init(ObjectClass *klass, void *data)
>  
>      dc->desc = "PowerNV PSI Controller";
>      dc->props = pnv_psi_properties;
> +    dc->reset = pnv_psi_reset;
>  }
>  
>  static const TypeInfo pnv_psi_info = {

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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Re: [PATCH v3 11/12] pnv/psi: Add device reset hook

[Greg Kurz]

[-- Attachment #1: Type: text/plain, Size: 3664 bytes --]

On Tue, 7 Jan 2020 11:23:44 +1100
David Gibson <david@gibson.dropbear.id.au> wrote:

> On Mon, Jan 06, 2020 at 03:56:44PM +0100, Cédric Le Goater wrote:
> > From: Greg Kurz <groug@kaod.org>
> > 
> > And call it from a QEMU reset handler. This allows each PNV child class to
> > override the reset hook if needed, eg. POWER8 doesn't but POWER9 does.
> > The proper way to do that would be to use device_class_set_parent_reset(),
> > but defining a Pnv8PsiClass and a Pnv9PsiClass types with a parent_reset
> > pointer adds a fair amount of code. Calling pnv_psi_reset() explicitely is
> > fine for now.
> > 
> > A subsequent patch will consolidate the call to qemu_register_reset() in
> > a single place.
> > 
> > Signed-off-by: Greg Kurz <groug@kaod.org>
> > Signed-off-by: Cédric Le Goater <clg@kaod.org>
> > ---
> >  hw/ppc/pnv_psi.c | 17 +++++++++++++----
> >  1 file changed, 13 insertions(+), 4 deletions(-)
> > 
> > diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
> > index 4da3d2568624..cf21e42d93b7 100644
> > --- a/hw/ppc/pnv_psi.c
> > +++ b/hw/ppc/pnv_psi.c
> > @@ -455,7 +455,7 @@ static const MemoryRegionOps pnv_psi_xscom_ops = {
> >      }
> >  };
> >  
> > -static void pnv_psi_reset(void *dev)
> > +static void pnv_psi_reset(DeviceState *dev)
> >  {
> >      PnvPsi *psi = PNV_PSI(dev);
> >  
> > @@ -464,6 +464,13 @@ static void pnv_psi_reset(void *dev)
> >      psi->regs[PSIHB_XSCOM_BAR] = psi->bar | PSIHB_BAR_EN;
> >  }
> >  
> > +static void pnv_psi_reset_handler(void *dev)
> > +{
> > +    DeviceClass *dc = DEVICE_GET_CLASS(dev);
> > +
> > +    dc->reset(DEVICE(dev));
> 
> I think it would be better to use device_reset() here rather than
> explicitly accessing the dc->reset pointer yourself.
> 

Of course ! Not sure why I didn't do that...

> > +}
> > +
> >  static void pnv_psi_power8_instance_init(Object *obj)
> >  {
> >      Pnv8Psi *psi8 = PNV8_PSI(obj);
> > @@ -526,7 +533,7 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
> >              ((uint64_t) i << PSIHB_XIVR_SRC_SH);
> >      }
> >  
> > -    qemu_register_reset(pnv_psi_reset, dev);
> > +    qemu_register_reset(pnv_psi_reset_handler, dev);
> >  }
> >  
> >  static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
> > @@ -809,7 +816,7 @@ static void pnv_psi_power9_irq_set(PnvPsi *psi, int irq, bool state)
> >      qemu_set_irq(psi->qirqs[irq], state);
> >  }
> >  
> > -static void pnv_psi_power9_reset(void *dev)
> > +static void pnv_psi_power9_reset(DeviceState *dev)
> >  {
> >      Pnv9Psi *psi = PNV9_PSI(dev);
> >  
> > @@ -863,7 +870,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
> >  
> >      pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
> >  
> > -    qemu_register_reset(pnv_psi_power9_reset, dev);
> > +    qemu_register_reset(pnv_psi_reset_handler, dev);
> >  }
> >  
> >  static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
> > @@ -875,6 +882,7 @@ static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
> >  
> >      dc->desc    = "PowerNV PSI Controller POWER9";
> >      dc->realize = pnv_psi_power9_realize;
> > +    dc->reset   = pnv_psi_power9_reset;
> >  
> >      ppc->xscom_pcba = PNV9_XSCOM_PSIHB_BASE;
> >      ppc->xscom_size = PNV9_XSCOM_PSIHB_SIZE;
> > @@ -927,6 +935,7 @@ static void pnv_psi_class_init(ObjectClass *klass, void *data)
> >  
> >      dc->desc = "PowerNV PSI Controller";
> >      dc->props = pnv_psi_properties;
> > +    dc->reset = pnv_psi_reset;
> >  }
> >  
> >  static const TypeInfo pnv_psi_info = {
> 


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[PATCH v3 12/12] pnv/psi: Consolidate some duplicated code in pnv_psi_realize()

[Cédric Le Goater]

From: Greg Kurz <groug@kaod.org>

The proper way to do that would be to use device_class_set_parent_realize(),
but defining a Pnv8PsiClass and a Pnv9PsiClass types with a parent_realize
pointer adds a fair amount of code. Calling pnv_psi_realize() explicitely
is fine for now.

This should probably be achieved with a device realize hook in the
PSI base class and device_class_set_parent_realize() in the children
classes.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/pnv_psi.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
index cf21e42d93b7..ce7717ccb151 100644
--- a/hw/ppc/pnv_psi.c
+++ b/hw/ppc/pnv_psi.c
@@ -471,6 +471,16 @@ static void pnv_psi_reset_handler(void *dev)
     dc->reset(DEVICE(dev));
 }
 
+static void pnv_psi_realize(DeviceState *dev, Error **errp)
+{
+    PnvPsi *psi = PNV_PSI(dev);
+
+    /* Default BAR for MMIO region */
+    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
+
+    qemu_register_reset(pnv_psi_reset_handler, dev);
+}
+
 static void pnv_psi_power8_instance_init(Object *obj)
 {
     Pnv8Psi *psi8 = PNV8_PSI(obj);
@@ -523,9 +533,6 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
     memory_region_init_io(&psi->regs_mr, OBJECT(dev), &psi_mmio_ops, psi,
                           "psihb", PNV_PSIHB_SIZE);
 
-    /* Default BAR for MMIO region */
-    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
-
     /* Default sources in XIVR */
     for (i = 0; i < PSI_NUM_INTERRUPTS; i++) {
         uint8_t xivr = irq_to_xivr[i];
@@ -533,7 +540,7 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
             ((uint64_t) i << PSIHB_XIVR_SRC_SH);
     }
 
-    qemu_register_reset(pnv_psi_reset_handler, dev);
+    pnv_psi_realize(dev, errp);
 }
 
 static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
@@ -868,9 +875,7 @@ static void pnv_psi_power9_realize(DeviceState *dev, Error **errp)
     memory_region_init_io(&psi->regs_mr, OBJECT(dev), &pnv_psi_p9_mmio_ops, psi,
                           "psihb", PNV9_PSIHB_SIZE);
 
-    pnv_psi_set_bar(psi, psi->bar | PSIHB_BAR_EN);
-
-    qemu_register_reset(pnv_psi_reset_handler, dev);
+    pnv_psi_realize(dev, errp);
 }
 
 static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
-- 
2.21.1