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charset="utf-8" From: Caleb Schlossin - Added pre_save and post_load methods to handle slave_pc_target and tod_st= ate Signed-off-by: Angelo Jaramillo Reviewed-by: Michael Kowal Reviewed-by: Aditya Gupta Reviewed-by: Chalapathi V Signed-off-by: Caleb Schlossin Reviewed-by: Glenn Miles Link: https://lore.kernel.org/qemu-devel/20260105160138.3242709-7-calebs@li= nux.ibm.com Signed-off-by: Harsh Prateek Bora --- include/hw/ppc/pnv_chiptod.h | 2 ++ hw/ppc/pnv_chiptod.c | 38 ++++++++++++++++++++++++++++++++++++ 2 files changed, 40 insertions(+) diff --git a/include/hw/ppc/pnv_chiptod.h b/include/hw/ppc/pnv_chiptod.h index 466b06560a..3e5e3b02b2 100644 --- a/include/hw/ppc/pnv_chiptod.h +++ b/include/hw/ppc/pnv_chiptod.h @@ -41,6 +41,8 @@ struct PnvChipTOD { uint64_t tod_error; uint64_t pss_mss_ctrl_reg; PnvCore *slave_pc_target; + uint64_t tx_ttype_ctrl; + uint8_t tod_state_val; }; =20 struct PnvChipTODClass { diff --git a/hw/ppc/pnv_chiptod.c b/hw/ppc/pnv_chiptod.c index 09a5a52ac7..bcf9b615a4 100644 --- a/hw/ppc/pnv_chiptod.c +++ b/hw/ppc/pnv_chiptod.c @@ -37,6 +37,7 @@ #include "hw/ppc/pnv_core.h" #include "hw/ppc/pnv_xscom.h" #include "hw/ppc/pnv_chiptod.h" +#include "migration/vmstate.h" #include "trace.h" =20 #include @@ -341,6 +342,8 @@ static void pnv_chiptod_xscom_write(void *opaque, hwadd= r addr, " TOD_TX_TTYPE_CTRL_REG val 0x%" PRIx64 " invalid slave address\n", val); } + /* Write slave_pc_target to a uint64_t variable for vmstate suppor= t. */ + chiptod->tx_ttype_ctrl =3D val; break; case TOD_ERROR_REG: chiptod->tod_error &=3D ~val; @@ -613,6 +616,40 @@ static void pnv_chiptod_unrealize(DeviceState *dev) qemu_unregister_reset(pnv_chiptod_reset, chiptod); } =20 +static int vmstate_pnv_chiptod_pre_save(void *opaque) +{ + PnvChipTOD *chiptod =3D PNV_CHIPTOD(opaque); + chiptod->tod_state_val =3D (uint8_t)chiptod->tod_state; + return 0; +} + +static int vmstate_pnv_chiptod_post_load(void *opaque) +{ + PnvChipTOD *chiptod =3D PNV_CHIPTOD(opaque); + if (chiptod->tx_ttype_ctrl !=3D 0) { + pnv_chiptod_xscom_write(chiptod, TOD_TX_TTYPE_CTRL_REG << 3, + chiptod->tx_ttype_ctrl, 8); + } + chiptod->tod_state =3D (enum tod_state)chiptod->tod_state_val; + return 0; +} + +static const VMStateDescription pnv_chiptod_vmstate =3D { + .name =3D TYPE_PNV_CHIPTOD, + .version_id =3D 1, + .pre_save =3D vmstate_pnv_chiptod_pre_save, + .pre_load =3D vmstate_pnv_chiptod_post_load, + .fields =3D (const VMStateField[]) { + VMSTATE_BOOL(primary, PnvChipTOD), + VMSTATE_BOOL(secondary, PnvChipTOD), + VMSTATE_UINT64(tod_error, PnvChipTOD), + VMSTATE_UINT64(pss_mss_ctrl_reg, PnvChipTOD), + VMSTATE_UINT64(tx_ttype_ctrl, PnvChipTOD), + VMSTATE_UINT8(tod_state_val, PnvChipTOD), + VMSTATE_END_OF_LIST(), + }, +}; + static void pnv_chiptod_class_init(ObjectClass *klass, const void *data) { DeviceClass *dc =3D DEVICE_CLASS(klass); @@ -621,6 +658,7 @@ static void pnv_chiptod_class_init(ObjectClass *klass, = const void *data) dc->unrealize =3D pnv_chiptod_unrealize; dc->desc =3D "PowerNV ChipTOD Controller"; dc->user_creatable =3D false; + dc->vmsd =3D &pnv_chiptod_vmstate; } =20 static const TypeInfo pnv_chiptod_type_info =3D { --=20 2.52.0