ppc/pnv: Introduce PnvPsiClass::compat

The Processor Service Interface (PSI) model has a chip_type class level
attribute, which is used to generate the content of the "compatible" DT
property according to the CPU type.

Since the PSI model already has specialized classes for each supported
CPU type, it seems cleaner to achieve this with QOM. Provide the content
of the "compatible" property with a new class level attribute.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157623837974.360005.14706607446188964477.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 11 insertions, 14 deletions

diff --git a/hw/ppc/pnv_psi.c b/hw/ppc/pnv_psi.c
index 5729243..98a82b2 100644
--- a/hw/ppc/pnv_psi.c
+++ b/hw/ppc/pnv_psi.c
@@ -536,10 +536,6 @@ static void pnv_psi_power8_realize(DeviceState *dev, Error **errp)
     qemu_register_reset(pnv_psi_reset, dev);
 }
 
-static const char compat_p8[] = "ibm,power8-psihb-x\0ibm,psihb-x";
-static const char compat_p9[] = "ibm,power9-psihb-x\0ibm,psihb-x";
-static const char compat_p10[] = "ibm,power10-psihb-x\0ibm,psihb-x";
-
 static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
 {
     PnvPsiClass *ppc = PNV_PSI_GET_CLASS(dev);
@@ -558,16 +554,8 @@ static int pnv_psi_dt_xscom(PnvXScomInterface *dev, void *fdt, int xscom_offset)
     _FDT(fdt_setprop(fdt, offset, "reg", reg, sizeof(reg)));
     _FDT(fdt_setprop_cell(fdt, offset, "#address-cells", 2));
     _FDT(fdt_setprop_cell(fdt, offset, "#size-cells", 1));
-    if (ppc->chip_type == PNV_CHIP_POWER10) {
-        _FDT(fdt_setprop(fdt, offset, "compatible", compat_p10,
-                         sizeof(compat_p10)));
-    } else if (ppc->chip_type == PNV_CHIP_POWER9) {
-        _FDT(fdt_setprop(fdt, offset, "compatible", compat_p9,
-                         sizeof(compat_p9)));
-    } else {
-        _FDT(fdt_setprop(fdt, offset, "compatible", compat_p8,
-                         sizeof(compat_p8)));
-    }
+    _FDT(fdt_setprop(fdt, offset, "compatible", ppc->compat,
+                     ppc->compat_size));
     return 0;
 }
 
@@ -581,6 +569,7 @@ static void pnv_psi_power8_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
+    static const char compat[] = "ibm,power8-psihb-x\0ibm,psihb-x";
 
     dc->desc    = "PowerNV PSI Controller POWER8";
     dc->realize = pnv_psi_power8_realize;
@@ -590,6 +579,8 @@ static void pnv_psi_power8_class_init(ObjectClass *klass, void *data)
     ppc->xscom_size = PNV_XSCOM_PSIHB_SIZE;
     ppc->bar_mask   = PSIHB_BAR_MASK;
     ppc->irq_set    = pnv_psi_power8_irq_set;
+    ppc->compat     = compat;
+    ppc->compat_size = sizeof(compat);
 }
 
 static const TypeInfo pnv_psi_power8_info = {
@@ -888,6 +879,7 @@ static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
     XiveNotifierClass *xfc = XIVE_NOTIFIER_CLASS(klass);
+    static const char compat[] = "ibm,power9-psihb-x\0ibm,psihb-x";
 
     dc->desc    = "PowerNV PSI Controller POWER9";
     dc->realize = pnv_psi_power9_realize;
@@ -897,6 +889,8 @@ static void pnv_psi_power9_class_init(ObjectClass *klass, void *data)
     ppc->xscom_size = PNV9_XSCOM_PSIHB_SIZE;
     ppc->bar_mask   = PSIHB9_BAR_MASK;
     ppc->irq_set    = pnv_psi_power9_irq_set;
+    ppc->compat     = compat;
+    ppc->compat_size = sizeof(compat);
 
     xfc->notify      = pnv_psi_notify;
 }
@@ -917,12 +911,15 @@ static void pnv_psi_power10_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     PnvPsiClass *ppc = PNV_PSI_CLASS(klass);
+    static const char compat[] = "ibm,power10-psihb-x\0ibm,psihb-x";
 
     dc->desc    = "PowerNV PSI Controller POWER10";
 
     ppc->chip_type  = PNV_CHIP_POWER10;
     ppc->xscom_pcba = PNV10_XSCOM_PSIHB_BASE;
     ppc->xscom_size = PNV10_XSCOM_PSIHB_SIZE;
+    ppc->compat     = compat;
+    ppc->compat_size = sizeof(compat);
 }
 
 static const TypeInfo pnv_psi_power10_info = {