On 11/09/2019 16:29, Balamuruhan S wrote:
> add PnvHomer device model to emulate homer memory access
> for pstate table, occ-sensors, slw, occ static and dynamic
> values for Power8 and Power9 chips.
>
> Signed-off-by: Cédric Le Goater <c...@kaod.org>
I don't remember this "Signed-off-by". Please remove it.
A part from that, it looks good. One minor comment below,
> Signed-off-by: Balamuruhan S <bal...@linux.ibm.com>
> ---
> hw/ppc/Makefile.objs | 1 +
> hw/ppc/pnv.c | 30 +++++
> hw/ppc/pnv_homer.c | 269
> +++++++++++++++++++++++++++++++++++++++++++++
> include/hw/ppc/pnv.h | 3 +
> include/hw/ppc/pnv_homer.h | 53 +++++++++
> 5 files changed, 356 insertions(+)
> create mode 100644 hw/ppc/pnv_homer.c
> create mode 100644 include/hw/ppc/pnv_homer.h
>
> diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
> index 2c4e1c8de0..580bb4f0dd 100644
> --- a/hw/ppc/Makefile.objs
> +++ b/hw/ppc/Makefile.objs
> @@ -9,6 +9,7 @@ obj-$(CONFIG_PSERIES) += spapr_tpm_proxy.o
> obj-$(CONFIG_SPAPR_RNG) += spapr_rng.o
> # IBM PowerNV
> obj-$(CONFIG_POWERNV) += pnv.o pnv_xscom.o pnv_core.o pnv_lpc.o pnv_psi.o
> pnv_occ.o pnv_bmc.o
> +obj-$(CONFIG_POWERNV) += pnv_homer.o
> ifeq ($(CONFIG_PCI)$(CONFIG_PSERIES)$(CONFIG_LINUX), yyy)
> obj-y += spapr_pci_vfio.o spapr_pci_nvlink2.o
> endif
> diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
> index 80338ffe87..f249e72356 100644
> --- a/hw/ppc/pnv.c
> +++ b/hw/ppc/pnv.c
> @@ -847,6 +847,11 @@ static void pnv_chip_power8_instance_init(Object *obj)
> TYPE_PNV8_OCC, &error_abort, NULL);
> object_property_add_const_link(OBJECT(&chip8->occ), "psi",
> OBJECT(&chip8->psi), &error_abort);
> +
> + object_initialize_child(obj, "homer", &chip8->homer,
> sizeof(chip8->homer),
> + TYPE_PNV8_HOMER, &error_abort, NULL);
> + object_property_add_const_link(OBJECT(&chip8->homer), "chip", obj,
> + &error_abort);
> }
>
> static void pnv_chip_icp_realize(Pnv8Chip *chip8, Error **errp)
> @@ -942,6 +947,16 @@ static void pnv_chip_power8_realize(DeviceState *dev,
> Error **errp)
> /* OCC SRAM model */
> memory_region_add_subregion(get_system_memory(),
> PNV_OCC_COMMON_AREA(chip),
> &chip8->occ.sram_regs);
> +
> + /* HOMER */
> + object_property_set_bool(OBJECT(&chip8->homer), true, "realized",
> + &local_err);
> + if (local_err) {
> + error_propagate(errp, local_err);
> + return;
> + }
> + memory_region_add_subregion(get_system_memory(), PNV_HOMER_BASE(chip),
> + &chip8->homer.regs);
> }
>
> static void pnv_chip_power8e_class_init(ObjectClass *klass, void *data)
> @@ -1024,6 +1039,11 @@ static void pnv_chip_power9_instance_init(Object *obj)
> TYPE_PNV9_OCC, &error_abort, NULL);
> object_property_add_const_link(OBJECT(&chip9->occ), "psi",
> OBJECT(&chip9->psi), &error_abort);
> +
> + object_initialize_child(obj, "homer", &chip9->homer,
> sizeof(chip9->homer),
> + TYPE_PNV9_HOMER, &error_abort, NULL);
> + object_property_add_const_link(OBJECT(&chip9->homer), "chip", obj,
> + &error_abort);
> }
>
> static void pnv_chip_quad_realize(Pnv9Chip *chip9, Error **errp)
> @@ -1134,6 +1154,16 @@ static void pnv_chip_power9_realize(DeviceState *dev,
> Error **errp)
> /* OCC SRAM model */
> memory_region_add_subregion(get_system_memory(),
> PNV9_OCC_COMMON_AREA(chip),
> &chip9->occ.sram_regs);
> +
> + /* HOMER */
> + object_property_set_bool(OBJECT(&chip9->homer), true, "realized",
> + &local_err);
> + if (local_err) {
> + error_propagate(errp, local_err);
> + return;
> + }
> + memory_region_add_subregion(get_system_memory(), PNV9_HOMER_BASE(chip),
> + &chip9->homer.regs);
> }
>
> static void pnv_chip_power9_class_init(ObjectClass *klass, void *data)
> diff --git a/hw/ppc/pnv_homer.c b/hw/ppc/pnv_homer.c
> new file mode 100644
> index 0000000000..707219c73c
> --- /dev/null
> +++ b/hw/ppc/pnv_homer.c
> @@ -0,0 +1,269 @@
> +/*
> + * QEMU PowerPC PowerNV Emulation of a few HOMER related registers
> + *
> + * Copyright (c) 2019, IBM Corporation.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License, version 2, as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, see <http://www.gnu.org/licenses/>.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "exec/hwaddr.h"
> +#include "exec/memory.h"
> +#include "sysemu/cpus.h"
> +#include "hw/qdev-core.h"
> +#include "hw/ppc/pnv.h"
> +#include "hw/ppc/pnv_homer.h"
> +
> +
> +static bool core_max_array(void *opaque, hwaddr addr)
you can pass directly 'PnvHomer *homer' here.
> +{
> + int i;
> + PnvHomer *homer = PNV_HOMER(opaque);
> + PnvHomerClass *hmrc = PNV_HOMER_GET_CLASS(homer);
> +
> + for (i = 0; i <= homer->chip->nr_cores; i++) {
> + if (addr == (hmrc->core_max_base + i)) {
> + return true;
> + }
> + }
> + return false;
> +}
> +
> +/* P8 Pstate table */
> +
> +#define PNV8_OCC_PSTATE_VERSION 0x1f8001
> +#define PNV8_OCC_PSTATE_MIN 0x1f8003
> +#define PNV8_OCC_PSTATE_VALID 0x1f8000
> +#define PNV8_OCC_PSTATE_THROTTLE 0x1f8002
> +#define PNV8_OCC_PSTATE_NOM 0x1f8004
> +#define PNV8_OCC_PSTATE_TURBO 0x1f8005
> +#define PNV8_OCC_PSTATE_ULTRA_TURBO 0x1f8006
> +#define PNV8_OCC_PSTATE_DATA 0x1f8008
> +#define PNV8_OCC_PSTATE_ID_ZERO 0x1f8010
> +#define PNV8_OCC_PSTATE_ID_ONE 0x1f8018
> +#define PNV8_OCC_PSTATE_ID_TWO 0x1f8020
> +#define PNV8_OCC_VDD_VOLTAGE_IDENTIFIER 0x1f8012
> +#define PNV8_OCC_VCS_VOLTAGE_IDENTIFIER 0x1f8013
> +#define PNV8_OCC_PSTATE_ZERO_FREQUENCY 0x1f8014
> +#define PNV8_OCC_PSTATE_ONE_FREQUENCY 0x1f801c
> +#define PNV8_OCC_PSTATE_TWO_FREQUENCY 0x1f8024
> +#define PNV8_CORE_MAX_BASE 0x1f8810
> +
> +
> +static uint64_t pnv_power8_homer_read(void *opaque, hwaddr addr,
> + unsigned size)
> +{
PnvHomer *homer = PNV_HOMER(opaque);
> + switch (addr) {
> + case PNV8_OCC_PSTATE_VERSION:
> + case PNV8_OCC_PSTATE_MIN:
> + case PNV8_OCC_PSTATE_ID_ZERO:
> + return 0;
> + case PNV8_OCC_PSTATE_VALID:
> + case PNV8_OCC_PSTATE_THROTTLE:
> + case PNV8_OCC_PSTATE_NOM:
> + case PNV8_OCC_PSTATE_TURBO:
> + case PNV8_OCC_PSTATE_ID_ONE:
> + case PNV8_OCC_VDD_VOLTAGE_IDENTIFIER:
> + case PNV8_OCC_VCS_VOLTAGE_IDENTIFIER:
> + return 1;
> + case PNV8_OCC_PSTATE_ULTRA_TURBO:
> + case PNV8_OCC_PSTATE_ID_TWO:
> + return 2;
> + case PNV8_OCC_PSTATE_DATA:
> + return 0x1000000000000000;
> + /* P8 frequency for 0, 1, and 2 pstates */
> + case PNV8_OCC_PSTATE_ZERO_FREQUENCY:
> + case PNV8_OCC_PSTATE_ONE_FREQUENCY:
> + case PNV8_OCC_PSTATE_TWO_FREQUENCY:
> + return 3000;
> + }
> + /* pstate table core max array */
> + if (core_max_array(opaque, addr)) {
if (core_max_array(homer, addr)) {
> + return 1;
> + }
> + return 0;
> +}
> +
> +static void pnv_power8_homer_write(void *opaque, hwaddr addr,
> + uint64_t val, unsigned size)
> +{
> + /* callback function defined to homer write */
> + return;
> +}
> +
> +static const MemoryRegionOps pnv_power8_homer_ops = {
> + .read = pnv_power8_homer_read,
> + .write = pnv_power8_homer_write,
> + .valid.min_access_size = 1,
> + .valid.max_access_size = 8,
> + .impl.min_access_size = 1,
> + .impl.max_access_size = 8,
> + .endianness = DEVICE_BIG_ENDIAN,
> +};
> +
> +static void pnv_homer_power8_class_init(ObjectClass *klass, void *data)
> +{
> + PnvHomerClass *homer = PNV_HOMER_CLASS(klass);
> +
> + homer->homer_size = PNV_HOMER_SIZE;
> + homer->homer_ops = &pnv_power8_homer_ops;
> + homer->core_max_base = PNV8_CORE_MAX_BASE;
> +}
> +
> +static const TypeInfo pnv_homer_power8_type_info = {
> + .name = TYPE_PNV8_HOMER,
> + .parent = TYPE_PNV_HOMER,
> + .instance_size = sizeof(PnvHomer),
> + .class_init = pnv_homer_power8_class_init,
> +};
> +
> +/* P9 Pstate table */
> +
> +#define PNV9_OCC_PSTATE_ID_ZERO 0xe2018
> +#define PNV9_OCC_PSTATE_ID_ONE 0xe2020
> +#define PNV9_OCC_PSTATE_ID_TWO 0xe2028
> +#define PNV9_OCC_PSTATE_DATA 0xe2000
> +#define PNV9_OCC_PSTATE_DATA_AREA 0xe2008
> +#define PNV9_OCC_PSTATE_MIN 0xe2003
> +#define PNV9_OCC_PSTATE_NOM 0xe2004
> +#define PNV9_OCC_PSTATE_TURBO 0xe2005
> +#define PNV9_OCC_PSTATE_ULTRA_TURBO 0xe2818
> +#define PNV9_OCC_MAX_PSTATE_ULTRA_TURBO 0xe2006
> +#define PNV9_OCC_PSTATE_MAJOR_VERSION 0xe2001
> +#define PNV9_OCC_OPAL_RUNTIME_DATA 0xe2b85
> +#define PNV9_CHIP_HOMER_IMAGE_POINTER 0x200008
> +#define PNV9_CHIP_HOMER_BASE 0x0
> +#define PNV9_OCC_PSTATE_ZERO_FREQUENCY 0xe201c
> +#define PNV9_OCC_PSTATE_ONE_FREQUENCY 0xe2024
> +#define PNV9_OCC_PSTATE_TWO_FREQUENCY 0xe202c
> +#define PNV9_OCC_ROLE_MASTER_OR_SLAVE 0xe2002
> +#define PNV9_CORE_MAX_BASE 0xe2819
> +
> +
> +static uint64_t pnv_power9_homer_read(void *opaque, hwaddr addr,
> + unsigned size)
> +{
> + switch (addr) {
> + case PNV9_OCC_MAX_PSTATE_ULTRA_TURBO:
> + case PNV9_OCC_PSTATE_ID_ZERO:
> + return 0;
> + case PNV9_OCC_PSTATE_DATA:
> + case PNV9_OCC_ROLE_MASTER_OR_SLAVE:
> + case PNV9_OCC_PSTATE_NOM:
> + case PNV9_OCC_PSTATE_TURBO:
> + case PNV9_OCC_PSTATE_ID_ONE:
> + case PNV9_OCC_PSTATE_ULTRA_TURBO:
> + case PNV9_OCC_OPAL_RUNTIME_DATA:
> + return 1;
> + case PNV9_OCC_PSTATE_MIN:
> + case PNV9_OCC_PSTATE_ID_TWO:
> + return 2;
> +
> + /* 3000 khz frequency for 0, 1, and 2 pstates */
> + case PNV9_OCC_PSTATE_ZERO_FREQUENCY:
> + case PNV9_OCC_PSTATE_ONE_FREQUENCY:
> + case PNV9_OCC_PSTATE_TWO_FREQUENCY:
> + return 3000;
> + case PNV9_OCC_PSTATE_MAJOR_VERSION:
> + return 0x90;
> + case PNV9_CHIP_HOMER_BASE:
> + case PNV9_OCC_PSTATE_DATA_AREA:
> + case PNV9_CHIP_HOMER_IMAGE_POINTER:
> + return 0x1000000000000000;
> + }
> + /* pstate table core max array */
> + if (core_max_array(opaque, addr)) {
> + return 1;
> + }
> + return 0;
> +}
> +
> +static void pnv_power9_homer_write(void *opaque, hwaddr addr,
> + uint64_t val, unsigned size)
> +{
> + /* callback function defined to homer write */
> + return;
> +}
> +
> +static const MemoryRegionOps pnv_power9_homer_ops = {
> + .read = pnv_power9_homer_read,
> + .write = pnv_power9_homer_write,
> + .valid.min_access_size = 1,
> + .valid.max_access_size = 8,
> + .impl.min_access_size = 1,
> + .impl.max_access_size = 8,
> + .endianness = DEVICE_BIG_ENDIAN,
> +};
> +
> +static void pnv_homer_power9_class_init(ObjectClass *klass, void *data)
> +{
> + PnvHomerClass *homer = PNV_HOMER_CLASS(klass);
> +
> + homer->homer_size = PNV9_HOMER_SIZE;
> + homer->homer_ops = &pnv_power9_homer_ops;
> + homer->core_max_base = PNV9_CORE_MAX_BASE;
> +}
> +
> +static const TypeInfo pnv_homer_power9_type_info = {
> + .name = TYPE_PNV9_HOMER,
> + .parent = TYPE_PNV_HOMER,
> + .instance_size = sizeof(PnvHomer),
> + .class_init = pnv_homer_power9_class_init,
> +};
> +
> +static void pnv_homer_realize(DeviceState *dev, Error **errp)
> +{
> + PnvHomer *homer = PNV_HOMER(dev);
> + PnvHomerClass *hmrc = PNV_HOMER_GET_CLASS(homer);
> + Object *obj;
> + Error *local_err = NULL;
> +
> + obj = object_property_get_link(OBJECT(dev), "chip", &local_err);
> + if (!obj) {
> + error_propagate(errp, local_err);
> + error_prepend(errp, "required link 'chip' not found: ");
> + return;
> + }
> + homer->chip = PNV_CHIP(obj);
> + /* homer region */
> + memory_region_init_io(&homer->regs, OBJECT(dev),
> + hmrc->homer_ops, homer, "homer-main-memory",
> + hmrc->homer_size);
> +}
> +
> +static void pnv_homer_class_init(ObjectClass *klass, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(klass);
> +
> + dc->realize = pnv_homer_realize;
> + dc->desc = "PowerNV HOMER Memory";
> +}
> +
> +static const TypeInfo pnv_homer_type_info = {
> + .name = TYPE_PNV_HOMER,
> + .parent = TYPE_DEVICE,
> + .instance_size = sizeof(PnvHomer),
> + .class_init = pnv_homer_class_init,
> + .class_size = sizeof(PnvHomerClass),
> + .abstract = true,
> +};
> +
> +static void pnv_homer_register_types(void)
> +{
> + type_register_static(&pnv_homer_type_info);
> + type_register_static(&pnv_homer_power8_type_info);
> + type_register_static(&pnv_homer_power9_type_info);
> +}
> +
> +type_init(pnv_homer_register_types);
> diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
> index 63a4b7b6a7..1cdbe55bf8 100644
> --- a/include/hw/ppc/pnv.h
> +++ b/include/hw/ppc/pnv.h
> @@ -26,6 +26,7 @@
> #include "hw/ppc/pnv_lpc.h"
> #include "hw/ppc/pnv_psi.h"
> #include "hw/ppc/pnv_occ.h"
> +#include "hw/ppc/pnv_homer.h"
> #include "hw/ppc/pnv_xive.h"
> #include "hw/ppc/pnv_core.h"
>
> @@ -76,6 +77,7 @@ typedef struct Pnv8Chip {
> PnvLpcController lpc;
> Pnv8Psi psi;
> PnvOCC occ;
> + PnvHomer homer;
> } Pnv8Chip;
>
> #define TYPE_PNV9_CHIP "pnv9-chip"
> @@ -90,6 +92,7 @@ typedef struct Pnv9Chip {
> Pnv9Psi psi;
> PnvLpcController lpc;
> PnvOCC occ;
> + PnvHomer homer;
>
> uint32_t nr_quads;
> PnvQuad *quads;
> diff --git a/include/hw/ppc/pnv_homer.h b/include/hw/ppc/pnv_homer.h
> new file mode 100644
> index 0000000000..abaec43c2d
> --- /dev/null
> +++ b/include/hw/ppc/pnv_homer.h
> @@ -0,0 +1,53 @@
> +/*
> + * QEMU PowerPC PowerNV Emulation of a few HOMER related registers
> + *
> + * Copyright (c) 2019, IBM Corporation.
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2 of the License, or (at your option) any later version.
> + *
> + * This library is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * Lesser General Public License for more details.
> + *
> + * You should have received a copy of the GNU Lesser General Public
> + * License along with this library; if not, see
> <http://www.gnu.org/licenses/>.
> + */
> +
> +#ifndef PPC_PNV_HOMER_H
> +#define PPC_PNV_HOMER_H
> +
> +#include "hw/ppc/pnv.h"
> +
> +#define TYPE_PNV_HOMER "pnv-homer"
> +#define PNV_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV_HOMER)
> +#define TYPE_PNV8_HOMER TYPE_PNV_HOMER "-POWER8"
> +#define PNV8_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV8_HOMER)
> +#define TYPE_PNV9_HOMER TYPE_PNV_HOMER "-POWER9"
> +#define PNV9_HOMER(obj) OBJECT_CHECK(PnvHomer, (obj), TYPE_PNV9_HOMER)
> +
> +typedef struct PnvHomer {
> + DeviceState parent;
> +
> + struct PnvChip *chip;
> + MemoryRegion regs;
> +} PnvHomer;
> +
> +#define PNV_HOMER_CLASS(klass) \
> + OBJECT_CLASS_CHECK(PnvHomerClass, (klass), TYPE_PNV_HOMER)
> +#define PNV_HOMER_GET_CLASS(obj) \
> + OBJECT_GET_CLASS(PnvHomerClass, (obj), TYPE_PNV_HOMER)
> +
> +typedef struct PnvHomerClass {
> + DeviceClass parent_class;
> +
> + int homer_size;
> + const MemoryRegionOps *homer_ops;
> +
> + hwaddr core_max_base;
> +} PnvHomerClass;
> +
> +#endif /* PPC_PNV_HOMER_H */
>
