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ppc/pnv: add a LPC Controller model for POWER9

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The LPC Controller on POWER9 is very similar to the one found on
POWER8 but accesses are now done via on MMIOs, without the XSCOM and
ECCB logic. The device tree is populated differently so we add a
specific POWER9 routine for the purpose.

SerIRQ routing is yet to be done.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190307223548.20516-7-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-03-07 23:35:39 +01:00 • committed by David Gibson
parent 64d011d56e
commit 15376c66fa
4 changed files with 234 additions and 1 deletions
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22
hw/ppc/pnv.c
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@ -306,6 +306,8 @@ static void pnv_chip_power9_dt_populate(PnvChip *chip, void *fdt)
if (chip->ram_size) {
pnv_dt_memory(fdt, chip->chip_id, chip->ram_start, chip->ram_size);
}
pnv_dt_lpc(chip, fdt, 0);
}
static void pnv_dt_rtc(ISADevice *d, void *fdt, int lpc_off)
@ -547,7 +549,8 @@ static ISABus *pnv_chip_power8nvl_isa_create(PnvChip *chip, Error **errp)
static ISABus *pnv_chip_power9_isa_create(PnvChip *chip, Error **errp)
{
return NULL;
Pnv9Chip *chip9 = PNV9_CHIP(chip);
return pnv_lpc_isa_create(&chip9->lpc, false, errp);
}
static ISABus *pnv_isa_create(PnvChip *chip, Error **errp)
@ -948,6 +951,11 @@ static void pnv_chip_power9_instance_init(Object *obj)
TYPE_PNV9_PSI, &error_abort, NULL);
object_property_add_const_link(OBJECT(&chip9->psi), "chip", obj,
&error_abort);
object_initialize_child(obj, "lpc", &chip9->lpc, sizeof(chip9->lpc),
TYPE_PNV9_LPC, &error_abort, NULL);
object_property_add_const_link(OBJECT(&chip9->lpc), "psi",
OBJECT(&chip9->psi), &error_abort);
}
static void pnv_chip_power9_realize(DeviceState *dev, Error **errp)
@ -992,6 +1000,18 @@ static void pnv_chip_power9_realize(DeviceState *dev, Error **errp)
}
pnv_xscom_add_subregion(chip, PNV9_XSCOM_PSIHB_BASE,
&PNV_PSI(psi9)->xscom_regs);
/* LPC */
object_property_set_bool(OBJECT(&chip9->lpc), true, "realized", &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
memory_region_add_subregion(get_system_memory(), PNV9_LPCM_BASE(chip),
&chip9->lpc.xscom_regs);
chip->dt_isa_nodename = g_strdup_printf("/lpcm-opb@%" PRIx64 "/lpc@0",
(uint64_t) PNV9_LPCM_BASE(chip));
}
static void pnv_chip_power9_class_init(ObjectClass *klass, void *data)