mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
098d57e7c0
qemu/hw/ppc/pnv_core.c
Joel Stanley bdb97596f6 ppc/pnv: Add QME region for P10 
The Quad Management Engine (QME) manages power related settings for its
quad. The xscom region is separate from the quad xscoms, therefore a new
region is added. The xscoms in a QME select a given core by selecting
the forth nibble.

Implement dummy reads for the stop state history (SSH) and special
wakeup (SPWU) registers. This quietens some sxcom errors when skiboot
boots on p10.

Power9 does not have a QME.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Message-ID: <20230707071213.9924-1-joel@jms.id.au>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
2023-07-07 06:32:53 -03:00

638 lines
17 KiB
C
Raw Blame History

/*
* QEMU PowerPC PowerNV CPU Core model
*
* Copyright (c) 2016, 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 2.1 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/>.
*/
#include "qemu/osdep.h"
#include "sysemu/reset.h"
#include "qapi/error.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "target/ppc/cpu.h"
#include "hw/ppc/ppc.h"
#include "hw/ppc/pnv.h"
#include "hw/ppc/pnv_chip.h"
#include "hw/ppc/pnv_core.h"
#include "hw/ppc/pnv_xscom.h"
#include "hw/ppc/xics.h"
#include "hw/qdev-properties.h"
#include "helper_regs.h"
static const char *pnv_core_cpu_typename(PnvCore *pc)
{
const char *core_type = object_class_get_name(object_get_class(OBJECT(pc)));
int len = strlen(core_type) - strlen(PNV_CORE_TYPE_SUFFIX);
char *s = g_strdup_printf(POWERPC_CPU_TYPE_NAME("%.*s"), len, core_type);
const char *cpu_type = object_class_get_name(object_class_by_name(s));
g_free(s);
return cpu_type;
}
static void pnv_core_cpu_reset(PnvCore *pc, PowerPCCPU *cpu)
{
CPUState *cs = CPU(cpu);
CPUPPCState *env = &cpu->env;
PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);
cpu_reset(cs);
/*
* the skiboot firmware elects a primary thread to initialize the
* system and it can be any.
*/
env->gpr[3] = PNV_FDT_ADDR;
env->nip = 0x10;
env->msr |= MSR_HVB; /* Hypervisor mode */
env->spr[SPR_HRMOR] = pc->hrmor;
hreg_compute_hflags(env);
ppc_maybe_interrupt(env);
pcc->intc_reset(pc->chip, cpu);
}
/*
* These values are read by the PowerNV HW monitors under Linux
*/
#define PNV_XSCOM_EX_DTS_RESULT0 0x50000
#define PNV_XSCOM_EX_DTS_RESULT1 0x50001
static uint64_t pnv_core_power8_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = 0;
/* The result should be 38 C */
switch (offset) {
case PNV_XSCOM_EX_DTS_RESULT0:
val = 0x26f024f023f0000ull;
break;
case PNV_XSCOM_EX_DTS_RESULT1:
val = 0x24f000000000000ull;
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_core_power8_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
{
uint32_t offset = addr >> 3;
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
static const MemoryRegionOps pnv_core_power8_xscom_ops = {
.read = pnv_core_power8_xscom_read,
.write = pnv_core_power8_xscom_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,
};
/*
* POWER9 core controls
*/
#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
#define PNV9_XSCOM_EC_CORE_THREAD_STATE 0x10ab3
static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = 0;
/* The result should be 38 C */
switch (offset) {
case PNV_XSCOM_EX_DTS_RESULT0:
val = 0x26f024f023f0000ull;
break;
case PNV_XSCOM_EX_DTS_RESULT1:
val = 0x24f000000000000ull;
break;
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
val = 0x0;
break;
case PNV9_XSCOM_EC_CORE_THREAD_STATE:
val = 0;
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_core_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
}
static const MemoryRegionOps pnv_core_power9_xscom_ops = {
.read = pnv_core_power9_xscom_read,
.write = pnv_core_power9_xscom_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,
};
/*
* POWER10 core controls
*/
#define PNV10_XSCOM_EC_CORE_THREAD_STATE 0x412
static uint64_t pnv_core_power10_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = 0;
switch (offset) {
case PNV10_XSCOM_EC_CORE_THREAD_STATE:
val = 0;
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_core_power10_xscom_write(void *opaque, hwaddr addr,
uint64_t val, unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
}
static const MemoryRegionOps pnv_core_power10_xscom_ops = {
.read = pnv_core_power10_xscom_read,
.write = pnv_core_power10_xscom_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_core_cpu_realize(PnvCore *pc, PowerPCCPU *cpu, Error **errp,
int thread_index)
{
CPUPPCState *env = &cpu->env;
int core_pir;
ppc_spr_t *pir = &env->spr_cb[SPR_PIR];
ppc_spr_t *tir = &env->spr_cb[SPR_TIR];
Error *local_err = NULL;
PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);
if (!qdev_realize(DEVICE(cpu), NULL, errp)) {
return;
}
pcc->intc_create(pc->chip, cpu, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
core_pir = object_property_get_uint(OBJECT(pc), "pir", &error_abort);
tir->default_value = thread_index;
pir->default_value = core_pir + thread_index;
/* Set time-base frequency to 512 MHz */
cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
}
static void pnv_core_reset(void *dev)
{
CPUCore *cc = CPU_CORE(dev);
PnvCore *pc = PNV_CORE(dev);
int i;
for (i = 0; i < cc->nr_threads; i++) {
pnv_core_cpu_reset(pc, pc->threads[i]);
}
}
static void pnv_core_realize(DeviceState *dev, Error **errp)
{
PnvCore *pc = PNV_CORE(OBJECT(dev));
PnvCoreClass *pcc = PNV_CORE_GET_CLASS(pc);
CPUCore *cc = CPU_CORE(OBJECT(dev));
const char *typename = pnv_core_cpu_typename(pc);
Error *local_err = NULL;
void *obj;
int i, j;
char name[32];
assert(pc->chip);
pc->threads = g_new(PowerPCCPU *, cc->nr_threads);
for (i = 0; i < cc->nr_threads; i++) {
PowerPCCPU *cpu;
obj = object_new(typename);
cpu = POWERPC_CPU(obj);
pc->threads[i] = POWERPC_CPU(obj);
snprintf(name, sizeof(name), "thread[%d]", i);
object_property_add_child(OBJECT(pc), name, obj);
cpu->machine_data = g_new0(PnvCPUState, 1);
object_unref(obj);
}
for (j = 0; j < cc->nr_threads; j++) {
pnv_core_cpu_realize(pc, pc->threads[j], &local_err, j);
if (local_err) {
goto err;
}
}
snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
pc, name, pcc->xscom_size);
qemu_register_reset(pnv_core_reset, pc);
return;
err:
while (--i >= 0) {
obj = OBJECT(pc->threads[i]);
object_unparent(obj);
}
g_free(pc->threads);
error_propagate(errp, local_err);
}
static void pnv_core_cpu_unrealize(PnvCore *pc, PowerPCCPU *cpu)
{
PnvCPUState *pnv_cpu = pnv_cpu_state(cpu);
PnvChipClass *pcc = PNV_CHIP_GET_CLASS(pc->chip);
pcc->intc_destroy(pc->chip, cpu);
cpu_remove_sync(CPU(cpu));
cpu->machine_data = NULL;
g_free(pnv_cpu);
object_unparent(OBJECT(cpu));
}
static void pnv_core_unrealize(DeviceState *dev)
{
PnvCore *pc = PNV_CORE(dev);
CPUCore *cc = CPU_CORE(dev);
int i;
qemu_unregister_reset(pnv_core_reset, pc);
for (i = 0; i < cc->nr_threads; i++) {
pnv_core_cpu_unrealize(pc, pc->threads[i]);
}
g_free(pc->threads);
}
static Property pnv_core_properties[] = {
DEFINE_PROP_UINT32("pir", PnvCore, pir, 0),
DEFINE_PROP_UINT64("hrmor", PnvCore, hrmor, 0),
DEFINE_PROP_LINK("chip", PnvCore, chip, TYPE_PNV_CHIP, PnvChip *),
DEFINE_PROP_END_OF_LIST(),
};
static void pnv_core_power8_class_init(ObjectClass *oc, void *data)
{
PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
pcc->xscom_ops = &pnv_core_power8_xscom_ops;
pcc->xscom_size = PNV_XSCOM_EX_SIZE;
}
static void pnv_core_power9_class_init(ObjectClass *oc, void *data)
{
PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
pcc->xscom_ops = &pnv_core_power9_xscom_ops;
pcc->xscom_size = PNV_XSCOM_EX_SIZE;
}
static void pnv_core_power10_class_init(ObjectClass *oc, void *data)
{
PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
pcc->xscom_ops = &pnv_core_power10_xscom_ops;
pcc->xscom_size = PNV10_XSCOM_EC_SIZE;
}
static void pnv_core_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = pnv_core_realize;
dc->unrealize = pnv_core_unrealize;
device_class_set_props(dc, pnv_core_properties);
dc->user_creatable = false;
}
#define DEFINE_PNV_CORE_TYPE(family, cpu_model) \
{ \
.parent = TYPE_PNV_CORE, \
.name = PNV_CORE_TYPE_NAME(cpu_model), \
.class_init = pnv_core_##family##_class_init, \
}
static const TypeInfo pnv_core_infos[] = {
{
.name = TYPE_PNV_CORE,
.parent = TYPE_CPU_CORE,
.instance_size = sizeof(PnvCore),
.class_size = sizeof(PnvCoreClass),
.class_init = pnv_core_class_init,
.abstract = true,
},
DEFINE_PNV_CORE_TYPE(power8, "power8e_v2.1"),
DEFINE_PNV_CORE_TYPE(power8, "power8_v2.0"),
DEFINE_PNV_CORE_TYPE(power8, "power8nvl_v1.0"),
DEFINE_PNV_CORE_TYPE(power9, "power9_v2.2"),
DEFINE_PNV_CORE_TYPE(power10, "power10_v2.0"),
};
DEFINE_TYPES(pnv_core_infos)
/*
* POWER9 Quads
*/
#define P9X_EX_NCU_SPEC_BAR 0x11010
static uint64_t pnv_quad_power9_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = -1;
switch (offset) {
case P9X_EX_NCU_SPEC_BAR:
case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
val = 0;
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_quad_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
case P9X_EX_NCU_SPEC_BAR:
case P9X_EX_NCU_SPEC_BAR + 0x400: /* Second EX */
break;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
}
static const MemoryRegionOps pnv_quad_power9_xscom_ops = {
.read = pnv_quad_power9_xscom_read,
.write = pnv_quad_power9_xscom_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,
};
/*
* POWER10 Quads
*/
static uint64_t pnv_quad_power10_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = -1;
switch (offset) {
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_quad_power10_xscom_write(void *opaque, hwaddr addr,
uint64_t val, unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
}
static const MemoryRegionOps pnv_quad_power10_xscom_ops = {
.read = pnv_quad_power10_xscom_read,
.write = pnv_quad_power10_xscom_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,
};
#define P10_QME_SPWU_HYP 0x83c
#define P10_QME_SSH_HYP 0x82c
static uint64_t pnv_qme_power10_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = -1;
/*
* Forth nibble selects the core within a quad, mask it to process read
* for any core.
*/
switch (offset & ~0xf000) {
case P10_QME_SPWU_HYP:
case P10_QME_SSH_HYP:
return 0;
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp read 0x%08x\n", __func__,
offset);
}
return val;
}
static void pnv_qme_power10_xscom_write(void *opaque, hwaddr addr,
uint64_t val, unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
default:
qemu_log_mask(LOG_UNIMP, "%s: unimp write 0x%08x\n", __func__,
offset);
}
}
static const MemoryRegionOps pnv_qme_power10_xscom_ops = {
.read = pnv_qme_power10_xscom_read,
.write = pnv_qme_power10_xscom_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_quad_power9_realize(DeviceState *dev, Error **errp)
{
PnvQuad *eq = PNV_QUAD(dev);
PnvQuadClass *pqc = PNV_QUAD_GET_CLASS(eq);
char name[32];
snprintf(name, sizeof(name), "xscom-quad.%d", eq->quad_id);
pnv_xscom_region_init(&eq->xscom_regs, OBJECT(dev),
pqc->xscom_ops,
eq, name,
pqc->xscom_size);
}
static void pnv_quad_power10_realize(DeviceState *dev, Error **errp)
{
PnvQuad *eq = PNV_QUAD(dev);
PnvQuadClass *pqc = PNV_QUAD_GET_CLASS(eq);
char name[32];
snprintf(name, sizeof(name), "xscom-quad.%d", eq->quad_id);
pnv_xscom_region_init(&eq->xscom_regs, OBJECT(dev),
pqc->xscom_ops,
eq, name,
pqc->xscom_size);
snprintf(name, sizeof(name), "xscom-qme.%d", eq->quad_id);
pnv_xscom_region_init(&eq->xscom_qme_regs, OBJECT(dev),
pqc->xscom_qme_ops,
eq, name,
pqc->xscom_qme_size);
}
static Property pnv_quad_properties[] = {
DEFINE_PROP_UINT32("quad-id", PnvQuad, quad_id, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void pnv_quad_power9_class_init(ObjectClass *oc, void *data)
{
PnvQuadClass *pqc = PNV_QUAD_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = pnv_quad_power9_realize;
pqc->xscom_ops = &pnv_quad_power9_xscom_ops;
pqc->xscom_size = PNV9_XSCOM_EQ_SIZE;
}
static void pnv_quad_power10_class_init(ObjectClass *oc, void *data)
{
PnvQuadClass *pqc = PNV_QUAD_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = pnv_quad_power10_realize;
pqc->xscom_ops = &pnv_quad_power10_xscom_ops;
pqc->xscom_size = PNV10_XSCOM_EQ_SIZE;
pqc->xscom_qme_ops = &pnv_qme_power10_xscom_ops;
pqc->xscom_qme_size = PNV10_XSCOM_QME_SIZE;
}
static void pnv_quad_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
device_class_set_props(dc, pnv_quad_properties);
dc->user_creatable = false;
}
static const TypeInfo pnv_quad_infos[] = {
{
.name = TYPE_PNV_QUAD,
.parent = TYPE_DEVICE,
.instance_size = sizeof(PnvQuad),
.class_size = sizeof(PnvQuadClass),
.class_init = pnv_quad_class_init,
.abstract = true,
},
{
.parent = TYPE_PNV_QUAD,
.name = PNV_QUAD_TYPE_NAME("power9"),
.class_init = pnv_quad_power9_class_init,
},
{
.parent = TYPE_PNV_QUAD,
.name = PNV_QUAD_TYPE_NAME("power10"),
.class_init = pnv_quad_power10_class_init,
},
};
DEFINE_TYPES(pnv_quad_infos);
Reference in New Issue View Git Blame Copy Permalink