commit d2704eb3fd5093224fb14ecbfdc916d42d42416b
author Daniel Henrique Barboza <danielhb413@gmail.com> Tue Jan 18 12:56:31 2022 +0100
committer Cédric Le Goater <clg@kaod.org> Tue Jan 18 12:56:31 2022 +0100
tree 0b8a5a26f652a7f3baf5c77549046eae6af3600a
parent 293a1d27e34810dfa70193b480d0ac265801f1f3

ppc/pnv: introduce PnvPHB4 'pec' property

This property will track the owner PEC of this PHB. For now it's
redundant since we can retrieve the PEC via phb->stack->pec but it
will not be redundant when we get rid of the stack device.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20220114180719.52117-2-danielhb413@gmail.com>
Signed-off-by: Cédric Le Goater <clg@kaod.org>

hw/pci-host/pnv_phb4.c

diff --git a/hw/pci-host/pnv_phb4.c b/hw/pci-host/pnv_phb4.c
index b5045fc..2658ef2 100644
--- a/hw/pci-host/pnv_phb4.c
+++ b/hw/pci-host/pnv_phb4.c
@@ -895,7 +895,7 @@
 static void pnv_pec_stk_update_map(PnvPHB4 *phb)
 {
     PnvPhb4PecStack *stack = phb->stack;
-    PnvPhb4PecState *pec = stack->pec;
+    PnvPhb4PecState *pec = phb->pec;
     MemoryRegion *sysmem = get_system_memory();
     uint64_t bar_en = phb->nest_regs[PEC_NEST_STK_BAR_EN];
     uint64_t bar, mask, size;
@@ -969,7 +969,7 @@
         bar = phb->nest_regs[PEC_NEST_STK_INT_BAR] >> 8;
         size = PNV_PHB4_MAX_INTs << 16;
         snprintf(name, sizeof(name), "pec-%d.%d-phb-%d-int",
-                 stack->pec->chip_id, stack->pec->index, stack->stack_no);
+                 phb->pec->chip_id, phb->pec->index, stack->stack_no);
         memory_region_init(&phb->intbar, OBJECT(phb), name, size);
         memory_region_add_subregion(sysmem, bar, &phb->intbar);
     }
@@ -982,7 +982,7 @@
                                          uint64_t val, unsigned size)
 {
     PnvPHB4 *phb = PNV_PHB4(opaque);
-    PnvPhb4PecState *pec = phb->stack->pec;
+    PnvPhb4PecState *pec = phb->pec;
     uint32_t reg = addr >> 3;
 
     switch (reg) {
@@ -1459,7 +1459,7 @@
 static void pnv_phb4_xscom_realize(PnvPHB4 *phb)
 {
     PnvPhb4PecStack *stack = phb->stack;
-    PnvPhb4PecState *pec = stack->pec;
+    PnvPhb4PecState *pec = phb->pec;
     PnvPhb4PecClass *pecc = PNV_PHB4_PEC_GET_CLASS(pec);
     uint32_t pec_nest_base;
     uint32_t pec_pci_base;
@@ -1568,8 +1568,13 @@
             return;
         }
 
-        /* All other phb properties but 'version' are already set */
-        pecc = PNV_PHB4_PEC_GET_CLASS(phb->stack->pec);
+        /*
+         * All other phb properties but 'pec' ad 'version' are
+         * already set.
+         */
+        object_property_set_link(OBJECT(phb), "pec", OBJECT(phb->stack->pec),
+                                 &error_abort);
+        pecc = PNV_PHB4_PEC_GET_CLASS(phb->pec);
         object_property_set_int(OBJECT(phb), "version", pecc->version,
                                 &error_fatal);
 
@@ -1682,6 +1687,8 @@
         DEFINE_PROP_UINT64("version", PnvPHB4, version, 0),
         DEFINE_PROP_LINK("stack", PnvPHB4, stack, TYPE_PNV_PHB4_PEC_STACK,
                          PnvPhb4PecStack *),
+        DEFINE_PROP_LINK("pec", PnvPHB4, pec, TYPE_PNV_PHB4_PEC,
+                         PnvPhb4PecState *),
         DEFINE_PROP_END_OF_LIST(),
 };