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ppc/pnv: Begin a more complete ADU LPC model for POWER9/10

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This implements a framework for an ADU unit model.

The ADU unit actually implements XSCOM, which is the bridge between MMIO
and PIB. However it also includes control and status registers and other
functions that are exposed as PIB (xscom) registers.

To keep things simple, pnv_xscom.c remains the XSCOM bridge
implementation, and pnv_adu.c implements the ADU registers and other
functions.

So far, just the ADU no-op registers in the pnv_xscom.c default handler
are moved over to the adu model.

Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Nicholas Piggin 2024-02-23 22:34:56 +10:00
parent 24c3caff99
commit 53f18b3ef2
8 changed files with 166 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

16
hw/ppc/pnv.c
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@ -1551,6 +1551,7 @@ static void pnv_chip_power9_instance_init(Object *obj)
PnvChipClass *pcc = PNV_CHIP_GET_CLASS(obj);
int i;
object_initialize_child(obj, "adu", &chip9->adu, TYPE_PNV_ADU);
object_initialize_child(obj, "xive", &chip9->xive, TYPE_PNV_XIVE);
object_property_add_alias(obj, "xive-fabric", OBJECT(&chip9->xive),
"xive-fabric");
@ -1661,6 +1662,13 @@ static void pnv_chip_power9_realize(DeviceState *dev, Error **errp)
return;
}
/* ADU */
if (!qdev_realize(DEVICE(&chip9->adu), NULL, errp)) {
return;
}
pnv_xscom_add_subregion(chip, PNV9_XSCOM_ADU_BASE,
&chip9->adu.xscom_regs);
pnv_chip_quad_realize(chip9, &local_err);
if (local_err) {
error_propagate(errp, local_err);
@ -1827,6 +1835,7 @@ static void pnv_chip_power10_instance_init(Object *obj)
PnvChipClass *pcc = PNV_CHIP_GET_CLASS(obj);
int i;
object_initialize_child(obj, "adu", &chip10->adu, TYPE_PNV_ADU);
object_initialize_child(obj, "xive", &chip10->xive, TYPE_PNV_XIVE2);
object_property_add_alias(obj, "xive-fabric", OBJECT(&chip10->xive),
"xive-fabric");
@ -1919,6 +1928,13 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
return;
}
/* ADU */
if (!qdev_realize(DEVICE(&chip10->adu), NULL, errp)) {
return;
}
pnv_xscom_add_subregion(chip, PNV10_XSCOM_ADU_BASE,
&chip10->adu.xscom_regs);
pnv_chip_power10_quad_realize(chip10, &local_err);
if (local_err) {
error_propagate(errp, local_err);