ppc/pnv: Introduce PnvChipClass::xscom_core_base() method

The pnv_chip_core_realize() function configures the XSCOM MMIO subregion
for each core of a single chip. The base address of the subregion depends
on the CPU type. Its computation is currently open-code using the
pnv_chip_is_powerXX() helpers. This can be achieved with QOM. Introduce
a method for this in the base chip class and implement it in child classes.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157623841311.360005.4705705734873339545.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

2 files changed, 25 insertions, 7 deletions

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 35416d1b3f..16f4e407ee 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -615,6 +615,24 @@ static void pnv_chip_power9_pic_print_info(PnvChip *chip, Monitor *mon)
     pnv_psi_pic_print_info(&chip9->psi, mon);
 }
 
+static uint64_t pnv_chip_power8_xscom_core_base(PnvChip *chip,
+                                                uint32_t core_id)
+{
+    return PNV_XSCOM_EX_BASE(core_id);
+}
+
+static uint64_t pnv_chip_power9_xscom_core_base(PnvChip *chip,
+                                                uint32_t core_id)
+{
+    return PNV9_XSCOM_EC_BASE(core_id);
+}
+
+static uint64_t pnv_chip_power10_xscom_core_base(PnvChip *chip,
+                                                 uint32_t core_id)
+{
+    return PNV10_XSCOM_EC_BASE(core_id);
+}
+
 static bool pnv_match_cpu(const char *default_type, const char *cpu_type)
 {
     PowerPCCPUClass *ppc_default =
@@ -1106,6 +1124,7 @@ static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data)
     k->isa_create = pnv_chip_power8_isa_create;
     k->dt_populate = pnv_chip_power8_dt_populate;
     k->pic_print_info = pnv_chip_power8_pic_print_info;
+    k->xscom_core_base = pnv_chip_power8_xscom_core_base;
     dc->desc = "PowerNV Chip POWER8E";
 
     device_class_set_parent_realize(dc, pnv_chip_power8_realize,
@@ -1128,6 +1147,7 @@ static void pnv_chip_power8_class_init(ObjectClass *klass, void *data)
     k->isa_create = pnv_chip_power8_isa_create;
     k->dt_populate = pnv_chip_power8_dt_populate;
     k->pic_print_info = pnv_chip_power8_pic_print_info;
+    k->xscom_core_base = pnv_chip_power8_xscom_core_base;
     dc->desc = "PowerNV Chip POWER8";
 
     device_class_set_parent_realize(dc, pnv_chip_power8_realize,
@@ -1150,6 +1170,7 @@ static void pnv_chip_power8nvl_class_init(ObjectClass *klass, void *data)
     k->isa_create = pnv_chip_power8nvl_isa_create;
     k->dt_populate = pnv_chip_power8_dt_populate;
     k->pic_print_info = pnv_chip_power8_pic_print_info;
+    k->xscom_core_base = pnv_chip_power8_xscom_core_base;
     dc->desc = "PowerNV Chip POWER8NVL";
 
     device_class_set_parent_realize(dc, pnv_chip_power8_realize,
@@ -1322,6 +1343,7 @@ static void pnv_chip_power9_class_init(ObjectClass *klass, void *data)
     k->isa_create = pnv_chip_power9_isa_create;
     k->dt_populate = pnv_chip_power9_dt_populate;
     k->pic_print_info = pnv_chip_power9_pic_print_info;
+    k->xscom_core_base = pnv_chip_power9_xscom_core_base;
     dc->desc = "PowerNV Chip POWER9";
 
     device_class_set_parent_realize(dc, pnv_chip_power9_realize,
@@ -1403,6 +1425,7 @@ static void pnv_chip_power10_class_init(ObjectClass *klass, void *data)
     k->isa_create = pnv_chip_power10_isa_create;
     k->dt_populate = pnv_chip_power10_dt_populate;
     k->pic_print_info = pnv_chip_power10_pic_print_info;
+    k->xscom_core_base = pnv_chip_power10_xscom_core_base;
     dc->desc = "PowerNV Chip POWER10";
 
     device_class_set_parent_realize(dc, pnv_chip_power10_realize,
@@ -1490,13 +1513,7 @@ static void pnv_chip_core_realize(PnvChip *chip, Error **errp)
                                  &error_fatal);
 
         /* Each core has an XSCOM MMIO region */
-        if (pnv_chip_is_power10(chip)) {
-            xscom_core_base = PNV10_XSCOM_EC_BASE(core_hwid);
-        } else if (pnv_chip_is_power9(chip)) {
-            xscom_core_base = PNV9_XSCOM_EC_BASE(core_hwid);
-        } else {
-            xscom_core_base = PNV_XSCOM_EX_BASE(core_hwid);
-        }
+        xscom_core_base = pcc->xscom_core_base(chip, core_hwid);
 
         pnv_xscom_add_subregion(chip, xscom_core_base,
                                 &pnv_core->xscom_regs);
diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index 7d2402784d..17ca9a14ac 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -137,6 +137,7 @@ typedef struct PnvChipClass {
     ISABus *(*isa_create)(PnvChip *chip, Error **errp);
     void (*dt_populate)(PnvChip *chip, void *fdt);
     void (*pic_print_info)(PnvChip *chip, Monitor *mon);
+    uint64_t (*xscom_core_base)(PnvChip *chip, uint32_t core_id);
 } PnvChipClass;
 
 #define PNV_CHIP_TYPE_SUFFIX "-" TYPE_PNV_CHIP