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Re: [PATCH v3 06/13] mac_newworld: Clean up creation of Uninorth devices


From: Mark Cave-Ayland
Subject: Re: [PATCH v3 06/13] mac_newworld: Clean up creation of Uninorth devices
Date: Fri, 14 Oct 2022 10:04:50 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.13.0

On 03/10/2022 21:13, BALATON Zoltan wrote:

Map regions in ascending order and reorganise code a bit to avoid some
casts and move Uninorth parts together.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
  hw/ppc/mac_newworld.c | 38 ++++++++++++++++++--------------------
  1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index 73b01e8c6d..be2cb5f057 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -228,13 +228,6 @@ static void ppc_core99_init(MachineState *machine)
          }
      }
- /* UniN init */
-    dev = qdev_new(TYPE_UNI_NORTH);
-    s = SYS_BUS_DEVICE(dev);
-    sysbus_realize_and_unref(s, &error_fatal);
-    memory_region_add_subregion(get_system_memory(), 0xf8000000,
-                                sysbus_mmio_get_region(s, 0));
-
      openpic_irqs = g_new0(IrqLines, machine->smp.cpus);
      for (i = 0; i < machine->smp.cpus; i++) {
          /* Mac99 IRQ connection between OpenPIC outputs pins
@@ -275,24 +268,31 @@ static void ppc_core99_init(MachineState *machine)
          }
      }
+ /* UniN init */
+    s = SYS_BUS_DEVICE(qdev_new(TYPE_UNI_NORTH));
+    sysbus_realize_and_unref(s, &error_fatal);
+    memory_region_add_subregion(get_system_memory(), 0xf8000000,
+                                sysbus_mmio_get_region(s, 0));
+
+
      if (PPC_INPUT(env) == PPC_FLAGS_INPUT_970) {
+        machine_arch = ARCH_MAC99_U3;
          /* 970 gets a U3 bus */
          /* Uninorth AGP bus */
          dev = qdev_new(TYPE_U3_AGP_HOST_BRIDGE);
-        sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
          uninorth_pci = U3_AGP_HOST_BRIDGE(dev);
          s = SYS_BUS_DEVICE(dev);
+        sysbus_realize_and_unref(s, &error_fatal);
+        sysbus_mmio_map(s, 0, 0xf0800000);
+        sysbus_mmio_map(s, 1, 0xf0c00000);
          /* PCI hole */
-        memory_region_add_subregion(get_system_memory(), 0x80000000ULL,
+        memory_region_add_subregion(get_system_memory(), 0x80000000,
                                      sysbus_mmio_get_region(s, 2));
          /* Register 8 MB of ISA IO space */
          memory_region_add_subregion(get_system_memory(), 0xf2000000,
                                      sysbus_mmio_get_region(s, 3));
-        sysbus_mmio_map(s, 0, 0xf0800000);
-        sysbus_mmio_map(s, 1, 0xf0c00000);
-
-        machine_arch = ARCH_MAC99_U3;
      } else {
+        machine_arch = ARCH_MAC99;
          /* Use values found on a real PowerMac */
          /* Uninorth AGP bus */
          uninorth_agp_dev = qdev_new(TYPE_UNI_NORTH_AGP_HOST_BRIDGE);
@@ -309,22 +309,20 @@ static void ppc_core99_init(MachineState *machine)
          sysbus_mmio_map(s, 0, 0xf4800000);
          sysbus_mmio_map(s, 1, 0xf4c00000);
- /* Uninorth main bus */
+        /* Uninorth main bus - this must be last to make it the default */
          dev = qdev_new(TYPE_UNI_NORTH_PCI_HOST_BRIDGE);
          qdev_prop_set_uint32(dev, "ofw-addr", 0xf2000000);
-        sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
          uninorth_pci = UNI_NORTH_PCI_HOST_BRIDGE(dev);
          s = SYS_BUS_DEVICE(dev);
+        sysbus_realize_and_unref(s, &error_fatal);
+        sysbus_mmio_map(s, 0, 0xf2800000);
+        sysbus_mmio_map(s, 1, 0xf2c00000);
          /* PCI hole */
-        memory_region_add_subregion(get_system_memory(), 0x80000000ULL,
+        memory_region_add_subregion(get_system_memory(), 0x80000000,
                                      sysbus_mmio_get_region(s, 2));
          /* Register 8 MB of ISA IO space */
          memory_region_add_subregion(get_system_memory(), 0xf2000000,
                                      sysbus_mmio_get_region(s, 3));
-        sysbus_mmio_map(s, 0, 0xf2800000);
-        sysbus_mmio_map(s, 1, 0xf2c00000);
-
-        machine_arch = ARCH_MAC99;
      }
machine->usb |= defaults_enabled() && !machine->usb_disabled;

Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>


ATB,

Mark.



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