[PULL,45/60] ppc/ppc405: QOM'ify POB

Commit Message

Daniel Henrique Barboza Aug. 31, 2022, 6:50 p.m. UTC

From: Cédric Le Goater <[e-mail]>

POB is currently modeled as a simple DCR device.

Reviewed-by: Daniel Henrique Barboza <[e-mail]>
Signed-off-by: Cédric Le Goater <[e-mail]>
[balaton: ppc4xx_dcr_register changes]
Signed-off-by: BALATON Zoltan <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Daniel Henrique Barboza <[e-mail]>
---
 hw/ppc/ppc405.h    | 12 ++++++++++
 hw/ppc/ppc405_uc.c | 56 ++++++++++++++++++++++++++--------------------
 2 files changed, 44 insertions(+), 24 deletions(-)

Patch

diff --git a/hw/ppc/ppc405.h b/hw/ppc/ppc405.h
index d63c2acdc7..4140e811d5 100644
--- a/hw/ppc/ppc405.h
+++ b/hw/ppc/ppc405.h
@@ -63,6 +63,17 @@  struct ppc4xx_bd_info_t {
     uint32_t bi_iic_fast[2];
 };
 
+/* PLB to OPB bridge */
+#define TYPE_PPC405_POB "ppc405-pob"
+OBJECT_DECLARE_SIMPLE_TYPE(Ppc405PobState, PPC405_POB);
+struct Ppc405PobState {
+    Ppc4xxDcrDeviceState parent_obj;
+
+    uint32_t bear;
+    uint32_t besr0;
+    uint32_t besr1;
+};
+
 /* OPB arbitrer */
 #define TYPE_PPC405_OPBA "ppc405-opba"
 OBJECT_DECLARE_SIMPLE_TYPE(Ppc405OpbaState, PPC405_OPBA);
@@ -220,6 +231,7 @@  struct Ppc405SoCState {
     Ppc405DmaState dma;
     Ppc405EbcState ebc;
     Ppc405OpbaState opba;
+    Ppc405PobState pob;
 };
 
 /* PowerPC 405 core */
diff --git a/hw/ppc/ppc405_uc.c b/hw/ppc/ppc405_uc.c
index 2c482bc25c..e5604c3421 100644
--- a/hw/ppc/ppc405_uc.c
+++ b/hw/ppc/ppc405_uc.c
@@ -234,19 +234,11 @@  enum {
     POB0_BEAR  = 0x0A4,
 };
 
-typedef struct ppc4xx_pob_t ppc4xx_pob_t;
-struct ppc4xx_pob_t {
-    uint32_t bear;
-    uint32_t besr0;
-    uint32_t besr1;
-};
-
-static uint32_t dcr_read_pob (void *opaque, int dcrn)
+static uint32_t dcr_read_pob(void *opaque, int dcrn)
 {
-    ppc4xx_pob_t *pob;
+    Ppc405PobState *pob = opaque;
     uint32_t ret;
 
-    pob = opaque;
     switch (dcrn) {
     case POB0_BEAR:
         ret = pob->bear;
@@ -266,11 +258,10 @@  static uint32_t dcr_read_pob (void *opaque, int dcrn)
     return ret;
 }
 
-static void dcr_write_pob (void *opaque, int dcrn, uint32_t val)
+static void dcr_write_pob(void *opaque, int dcrn, uint32_t val)
 {
-    ppc4xx_pob_t *pob;
+    Ppc405PobState *pob = opaque;
 
-    pob = opaque;
     switch (dcrn) {
     case POB0_BEAR:
         /* Read only */
@@ -286,26 +277,34 @@  static void dcr_write_pob (void *opaque, int dcrn, uint32_t val)
     }
 }
 
-static void ppc4xx_pob_reset (void *opaque)
+static void ppc405_pob_reset(DeviceState *dev)
 {
-    ppc4xx_pob_t *pob;
+    Ppc405PobState *pob = PPC405_POB(dev);
 
-    pob = opaque;
     /* No error */
     pob->bear = 0x00000000;
     pob->besr0 = 0x0000000;
     pob->besr1 = 0x0000000;
 }
 
-static void ppc4xx_pob_init(CPUPPCState *env)
+static void ppc405_pob_realize(DeviceState *dev, Error **errp)
+{
+    Ppc405PobState *pob = PPC405_POB(dev);
+    Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev);
+
+    ppc4xx_dcr_register(dcr, POB0_BEAR, pob, &dcr_read_pob, &dcr_write_pob);
+    ppc4xx_dcr_register(dcr, POB0_BESR0, pob, &dcr_read_pob, &dcr_write_pob);
+    ppc4xx_dcr_register(dcr, POB0_BESR1, pob, &dcr_read_pob, &dcr_write_pob);
+}
+
+static void ppc405_pob_class_init(ObjectClass *oc, void *data)
 {
-    ppc4xx_pob_t *pob;
+    DeviceClass *dc = DEVICE_CLASS(oc);
 
-    pob = g_new0(ppc4xx_pob_t, 1);
-    ppc_dcr_register(env, POB0_BEAR, pob, &dcr_read_pob, &dcr_write_pob);
-    ppc_dcr_register(env, POB0_BESR0, pob, &dcr_read_pob, &dcr_write_pob);
-    ppc_dcr_register(env, POB0_BESR1, pob, &dcr_read_pob, &dcr_write_pob);
-    qemu_register_reset(ppc4xx_pob_reset, pob);
+    dc->realize = ppc405_pob_realize;
+    dc->reset = ppc405_pob_reset;
+    /* Reason: only works as function of a ppc4xx SoC */
+    dc->user_creatable = false;
 }
 
 /*****************************************************************************/
@@ -1373,6 +1372,8 @@  static void ppc405_soc_instance_init(Object *obj)
     object_initialize_child(obj, "ebc", &s->ebc, TYPE_PPC405_EBC);
 
     object_initialize_child(obj, "opba", &s->opba, TYPE_PPC405_OPBA);
+
+    object_initialize_child(obj, "pob", &s->pob, TYPE_PPC405_POB);
 }
 
 static void ppc405_reset(void *opaque)
@@ -1407,7 +1408,9 @@  static void ppc405_soc_realize(DeviceState *dev, Error **errp)
     ppc4xx_plb_init(env);
 
     /* PLB to OPB bridge */
-    ppc4xx_pob_init(env);
+    if (!ppc4xx_dcr_realize(PPC4xx_DCR_DEVICE(&s->pob), &s->cpu, errp)) {
+        return;
+    }
 
     /* OBP arbitrer */
     sbd = SYS_BUS_DEVICE(&s->opba);
@@ -1527,6 +1530,11 @@  static void ppc405_soc_class_init(ObjectClass *oc, void *data)
 
 static const TypeInfo ppc405_types[] = {
     {
+        .name           = TYPE_PPC405_POB,
+        .parent         = TYPE_PPC4xx_DCR_DEVICE,
+        .instance_size  = sizeof(Ppc405PobState),
+        .class_init     = ppc405_pob_class_init,
+    }, {
         .name           = TYPE_PPC405_OPBA,
         .parent         = TYPE_SYS_BUS_DEVICE,
         .instance_size  = sizeof(Ppc405OpbaState),