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qemu/hw/ppc/pnv_homer.c
Cédric Le Goater 23a782eb66 ppc/pnv: change the PowerNV machine devices to be non user creatable 
The PowerNV machine emulates an OpenPOWER system and the PowerNV chip
devices are models of the internal logic of the POWER processor. They
can not be instantiated by the user on the QEMU command line.

The PHB3/PHB4 devices could be an exception in the future after some
rework on how the device tree is built. For the moment, exclude them
also.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200129113720.7404-1-clg@kaod.org>
Tested-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2020-02-02 14:07:57 +11:00

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/*
* 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 "qemu/log.h"
#include "qapi/error.h"
#include "exec/hwaddr.h"
#include "exec/memory.h"
#include "sysemu/cpus.h"
#include "hw/qdev-core.h"
#include "hw/qdev-properties.h"
#include "hw/ppc/pnv.h"
#include "hw/ppc/pnv_homer.h"
#include "hw/ppc/pnv_xscom.h"
static bool core_max_array(PnvHomer *homer, hwaddr addr)
{
int i;
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(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,
};
/* P8 PBA BARs */
#define PBA_BAR0 0x00
#define PBA_BAR1 0x01
#define PBA_BAR2 0x02
#define PBA_BAR3 0x03
#define PBA_BARMASK0 0x04
#define PBA_BARMASK1 0x05
#define PBA_BARMASK2 0x06
#define PBA_BARMASK3 0x07
static uint64_t pnv_homer_power8_pba_read(void *opaque, hwaddr addr,
unsigned size)
{
PnvHomer *homer = PNV_HOMER(opaque);
PnvChip *chip = homer->chip;
uint32_t reg = addr >> 3;
uint64_t val = 0;
switch (reg) {
case PBA_BAR0:
val = PNV_HOMER_BASE(chip);
break;
case PBA_BARMASK0: /* P8 homer region mask */
val = (PNV_HOMER_SIZE - 1) & 0x300000;
break;
case PBA_BAR3: /* P8 occ common area */
val = PNV_OCC_COMMON_AREA_BASE;
break;
case PBA_BARMASK3: /* P8 occ common area mask */
val = (PNV_OCC_COMMON_AREA_SIZE - 1) & 0x700000;
break;
default:
qemu_log_mask(LOG_UNIMP, "PBA: read to unimplemented register: Ox%"
HWADDR_PRIx "\n", addr >> 3);
}
return val;
}
static void pnv_homer_power8_pba_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
qemu_log_mask(LOG_UNIMP, "PBA: write to unimplemented register: Ox%"
HWADDR_PRIx "\n", addr >> 3);
}
static const MemoryRegionOps pnv_homer_power8_pba_ops = {
.read = pnv_homer_power8_pba_read,
.write = pnv_homer_power8_pba_write,
.valid.min_access_size = 8,
.valid.max_access_size = 8,
.impl.min_access_size = 8,
.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->pba_size = PNV_XSCOM_PBA_SIZE;
homer->pba_ops = &pnv_homer_power8_pba_ops;
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)
{
PnvHomer *homer = PNV_HOMER(opaque);
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(homer, 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 uint64_t pnv_homer_power9_pba_read(void *opaque, hwaddr addr,
unsigned size)
{
PnvHomer *homer = PNV_HOMER(opaque);
PnvChip *chip = homer->chip;
uint32_t reg = addr >> 3;
uint64_t val = 0;
switch (reg) {
case PBA_BAR0:
val = PNV9_HOMER_BASE(chip);
break;
case PBA_BARMASK0: /* P9 homer region mask */
val = (PNV9_HOMER_SIZE - 1) & 0x300000;
break;
case PBA_BAR2: /* P9 occ common area */
val = PNV9_OCC_COMMON_AREA_BASE;
break;
case PBA_BARMASK2: /* P9 occ common area size */
val = (PNV9_OCC_COMMON_AREA_SIZE - 1) & 0x700000;
break;
default:
qemu_log_mask(LOG_UNIMP, "PBA: read to unimplemented register: Ox%"
HWADDR_PRIx "\n", addr >> 3);
}
return val;
}
static void pnv_homer_power9_pba_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
qemu_log_mask(LOG_UNIMP, "PBA: write to unimplemented register: Ox%"
HWADDR_PRIx "\n", addr >> 3);
}
static const MemoryRegionOps pnv_homer_power9_pba_ops = {
.read = pnv_homer_power9_pba_read,
.write = pnv_homer_power9_pba_write,
.valid.min_access_size = 8,
.valid.max_access_size = 8,
.impl.min_access_size = 8,
.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->pba_size = PNV9_XSCOM_PBA_SIZE;
homer->pba_ops = &pnv_homer_power9_pba_ops;
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);
assert(homer->chip);
pnv_xscom_region_init(&homer->pba_regs, OBJECT(dev), hmrc->pba_ops,
homer, "xscom-pba", hmrc->pba_size);
/* homer region */
memory_region_init_io(&homer->regs, OBJECT(dev),
hmrc->homer_ops, homer, "homer-main-memory",
hmrc->homer_size);
}
static Property pnv_homer_properties[] = {
DEFINE_PROP_LINK("chip", PnvHomer, chip, TYPE_PNV_CHIP, PnvChip *),
DEFINE_PROP_END_OF_LIST(),
};
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";
device_class_set_props(dc, pnv_homer_properties);
dc->user_creatable = false;
}
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);
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