[PATCH v2 09/19] ppc/pnv: Introduce a "chip" property under the PHB4 model

["Cédric Le Goater" <clg@kaod.org>]

And check the PEC index using the chip class.

Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 include/hw/pci-host/pnv_phb4.h | 2 ++
 hw/pci-host/pnv_phb4_pec.c     | 7 +++++++
 hw/ppc/pnv.c                   | 2 ++
 3 files changed, 11 insertions(+)

diff --git a/include/hw/pci-host/pnv_phb4.h b/include/hw/pci-host/pnv_phb4.h
index b2864233641e..8a585c9a42f7 100644
--- a/include/hw/pci-host/pnv_phb4.h
+++ b/include/hw/pci-host/pnv_phb4.h
@@ -205,6 +205,8 @@ struct PnvPhb4PecState {
     #define PHB4_PEC_MAX_STACKS     3
     uint32_t num_stacks;
     PnvPhb4PecStack stacks[PHB4_PEC_MAX_STACKS];
+
+    PnvChip *chip;
 };
 
 
diff --git a/hw/pci-host/pnv_phb4_pec.c b/hw/pci-host/pnv_phb4_pec.c
index 9f722729ac50..4b32b5ae6ed4 100644
--- a/hw/pci-host/pnv_phb4_pec.c
+++ b/hw/pci-host/pnv_phb4_pec.c
@@ -382,6 +382,11 @@ static void pnv_pec_realize(DeviceState *dev, Error **errp)
 
     assert(pec->system_memory);
 
+    if (pec->index >= PNV_CHIP_GET_CLASS(pec->chip)->num_pecs) {
+        error_setg(errp, "invalid PEC index: %d", pec->index);
+        return;
+    }
+
     /* Create stacks */
     for (i = 0; i < pec->num_stacks; i++) {
         PnvPhb4PecStack *stack = &pec->stacks[i];
@@ -462,6 +467,8 @@ static Property pnv_pec_properties[] = {
         DEFINE_PROP_UINT32("index", PnvPhb4PecState, index, 0),
         DEFINE_PROP_UINT32("num-stacks", PnvPhb4PecState, num_stacks, 0),
         DEFINE_PROP_UINT32("chip-id", PnvPhb4PecState, chip_id, 0),
+        DEFINE_PROP_LINK("chip", PnvPhb4PecState, chip, TYPE_PNV_CHIP,
+                         PnvChip *),
         DEFINE_PROP_LINK("system-memory", PnvPhb4PecState, system_memory,
                      TYPE_MEMORY_REGION, MemoryRegion *),
         DEFINE_PROP_END_OF_LIST(),
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index ecfe373e45e7..2f8d0c19aab7 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -1402,6 +1402,8 @@ static void pnv_chip_power9_phb_realize(PnvChip *chip, Error **errp)
                                 &error_fatal);
         object_property_set_int(OBJECT(pec), "chip-id", chip->chip_id,
                                 &error_fatal);
+        object_property_set_link(OBJECT(pec), "chip", OBJECT(chip),
+                                 &error_fatal);
         object_property_set_link(OBJECT(pec), "system-memory",
                                  OBJECT(get_system_memory()), &error_abort);
         if (!qdev_realize(DEVICE(pec), NULL, errp)) {
-- 
2.31.1