summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--hw/ppc/Makefile.objs2
-rw-r--r--hw/ppc/pnv.c189
-rw-r--r--hw/ppc/pnv_core.c182
-rw-r--r--include/hw/ppc/pnv.h2
-rw-r--r--include/hw/ppc/pnv_core.h48
5 files changed, 421 insertions, 2 deletions
diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs
index 8105db7d56..f8c7d1db9a 100644
--- a/hw/ppc/Makefile.objs
+++ b/hw/ppc/Makefile.objs
@@ -6,7 +6,7 @@ obj-$(CONFIG_PSERIES) += spapr_hcall.o spapr_iommu.o spapr_rtas.o
obj-$(CONFIG_PSERIES) += spapr_pci.o spapr_rtc.o spapr_drc.o spapr_rng.o
obj-$(CONFIG_PSERIES) += spapr_cpu_core.o
# IBM PowerNV
-obj-$(CONFIG_POWERNV) += pnv.o
+obj-$(CONFIG_POWERNV) += pnv.o pnv_core.o
ifeq ($(CONFIG_PCI)$(CONFIG_PSERIES)$(CONFIG_LINUX), yyy)
obj-y += spapr_pci_vfio.o
endif
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 825d28ca75..3413107697 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -27,6 +27,7 @@
#include "hw/ppc/fdt.h"
#include "hw/ppc/ppc.h"
#include "hw/ppc/pnv.h"
+#include "hw/ppc/pnv_core.h"
#include "hw/loader.h"
#include "exec/address-spaces.h"
#include "qemu/cutils.h"
@@ -75,12 +76,160 @@ static void powernv_populate_memory_node(void *fdt, int chip_id, hwaddr start,
_FDT((fdt_setprop_cell(fdt, off, "ibm,chip-id", chip_id)));
}
+static int get_cpus_node(void *fdt)
+{
+ int cpus_offset = fdt_path_offset(fdt, "/cpus");
+
+ if (cpus_offset < 0) {
+ cpus_offset = fdt_add_subnode(fdt, fdt_path_offset(fdt, "/"),
+ "cpus");
+ if (cpus_offset) {
+ _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1)));
+ _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0)));
+ }
+ }
+ _FDT(cpus_offset);
+ return cpus_offset;
+}
+
+/*
+ * The PowerNV cores (and threads) need to use real HW ids and not an
+ * incremental index like it has been done on other platforms. This HW
+ * id is stored in the CPU PIR, it is used to create cpu nodes in the
+ * device tree, used in XSCOM to address cores and in interrupt
+ * servers.
+ */
+static void powernv_create_core_node(PnvChip *chip, PnvCore *pc, void *fdt)
+{
+ CPUState *cs = CPU(DEVICE(pc->threads));
+ DeviceClass *dc = DEVICE_GET_CLASS(cs);
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ int smt_threads = ppc_get_compat_smt_threads(cpu);
+ CPUPPCState *env = &cpu->env;
+ PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
+ uint32_t servers_prop[smt_threads];
+ int i;
+ uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
+ 0xffffffff, 0xffffffff};
+ uint32_t tbfreq = PNV_TIMEBASE_FREQ;
+ uint32_t cpufreq = 1000000000;
+ uint32_t page_sizes_prop[64];
+ size_t page_sizes_prop_size;
+ const uint8_t pa_features[] = { 24, 0,
+ 0xf6, 0x3f, 0xc7, 0xc0, 0x80, 0xf0,
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x80, 0x00,
+ 0x80, 0x00, 0x80, 0x00, 0x80, 0x00 };
+ int offset;
+ char *nodename;
+ int cpus_offset = get_cpus_node(fdt);
+
+ nodename = g_strdup_printf("%s@%x", dc->fw_name, pc->pir);
+ offset = fdt_add_subnode(fdt, cpus_offset, nodename);
+ _FDT(offset);
+ g_free(nodename);
+
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id", chip->chip_id)));
+
+ _FDT((fdt_setprop_cell(fdt, offset, "reg", pc->pir)));
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,pir", pc->pir)));
+ _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu")));
+
+ _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR])));
+ _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size",
+ env->dcache_line_size)));
+ _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size",
+ env->dcache_line_size)));
+ _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size",
+ env->icache_line_size)));
+ _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size",
+ env->icache_line_size)));
+
+ if (pcc->l1_dcache_size) {
+ _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size",
+ pcc->l1_dcache_size)));
+ } else {
+ error_report("Warning: Unknown L1 dcache size for cpu");
+ }
+ if (pcc->l1_icache_size) {
+ _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size",
+ pcc->l1_icache_size)));
+ } else {
+ error_report("Warning: Unknown L1 icache size for cpu");
+ }
+
+ _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq)));
+ _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq)));
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", env->slb_nr)));
+ _FDT((fdt_setprop_string(fdt, offset, "status", "okay")));
+ _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0)));
+
+ if (env->spr_cb[SPR_PURR].oea_read) {
+ _FDT((fdt_setprop(fdt, offset, "ibm,purr", NULL, 0)));
+ }
+
+ if (env->mmu_model & POWERPC_MMU_1TSEG) {
+ _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes",
+ segs, sizeof(segs))));
+ }
+
+ /* Advertise VMX/VSX (vector extensions) if available
+ * 0 / no property == no vector extensions
+ * 1 == VMX / Altivec available
+ * 2 == VSX available */
+ if (env->insns_flags & PPC_ALTIVEC) {
+ uint32_t vmx = (env->insns_flags2 & PPC2_VSX) ? 2 : 1;
+
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", vmx)));
+ }
+
+ /* Advertise DFP (Decimal Floating Point) if available
+ * 0 / no property == no DFP
+ * 1 == DFP available */
+ if (env->insns_flags2 & PPC2_DFP) {
+ _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1)));
+ }
+
+ page_sizes_prop_size = ppc_create_page_sizes_prop(env, page_sizes_prop,
+ sizeof(page_sizes_prop));
+ if (page_sizes_prop_size) {
+ _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes",
+ page_sizes_prop, page_sizes_prop_size)));
+ }
+
+ _FDT((fdt_setprop(fdt, offset, "ibm,pa-features",
+ pa_features, sizeof(pa_features))));
+
+ if (cpu->cpu_version) {
+ _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", cpu->cpu_version)));
+ }
+
+ /* Build interrupt servers properties */
+ for (i = 0; i < smt_threads; i++) {
+ servers_prop[i] = cpu_to_be32(pc->pir + i);
+ }
+ _FDT((fdt_setprop(fdt, offset, "ibm,ppc-interrupt-server#s",
+ servers_prop, sizeof(servers_prop))));
+}
+
static void powernv_populate_chip(PnvChip *chip, void *fdt)
{
+ PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
+ char *typename = pnv_core_typename(pcc->cpu_model);
+ size_t typesize = object_type_get_instance_size(typename);
+ int i;
+
+ for (i = 0; i < chip->nr_cores; i++) {
+ PnvCore *pnv_core = PNV_CORE(chip->cores + i * typesize);
+
+ powernv_create_core_node(chip, pnv_core, fdt);
+ }
+
if (chip->ram_size) {
powernv_populate_memory_node(fdt, chip->chip_id, chip->ram_start,
chip->ram_size);
}
+ g_free(typename);
}
static void *powernv_create_fdt(MachineState *machine)
@@ -410,13 +559,51 @@ static void pnv_chip_realize(DeviceState *dev, Error **errp)
{
PnvChip *chip = PNV_CHIP(dev);
Error *error = NULL;
+ PnvChipClass *pcc = PNV_CHIP_GET_CLASS(chip);
+ char *typename = pnv_core_typename(pcc->cpu_model);
+ size_t typesize = object_type_get_instance_size(typename);
+ int i, core_hwid;
+
+ if (!object_class_by_name(typename)) {
+ error_setg(errp, "Unable to find PowerNV CPU Core '%s'", typename);
+ return;
+ }
- /* Early checks on the core settings */
+ /* Cores */
pnv_chip_core_sanitize(chip, &error);
if (error) {
error_propagate(errp, error);
return;
}
+
+ chip->cores = g_malloc0(typesize * chip->nr_cores);
+
+ for (i = 0, core_hwid = 0; (core_hwid < sizeof(chip->cores_mask) * 8)
+ && (i < chip->nr_cores); core_hwid++) {
+ char core_name[32];
+ void *pnv_core = chip->cores + i * typesize;
+
+ if (!(chip->cores_mask & (1ull << core_hwid))) {
+ continue;
+ }
+
+ object_initialize(pnv_core, typesize, typename);
+ snprintf(core_name, sizeof(core_name), "core[%d]", core_hwid);
+ object_property_add_child(OBJECT(chip), core_name, OBJECT(pnv_core),
+ &error_fatal);
+ object_property_set_int(OBJECT(pnv_core), smp_threads, "nr-threads",
+ &error_fatal);
+ object_property_set_int(OBJECT(pnv_core), core_hwid,
+ CPU_CORE_PROP_CORE_ID, &error_fatal);
+ object_property_set_int(OBJECT(pnv_core),
+ pcc->core_pir(chip, core_hwid),
+ "pir", &error_fatal);
+ object_property_set_bool(OBJECT(pnv_core), true, "realized",
+ &error_fatal);
+ object_unref(OBJECT(pnv_core));
+ i++;
+ }
+ g_free(typename);
}
static Property pnv_chip_properties[] = {
diff --git a/hw/ppc/pnv_core.c b/hw/ppc/pnv_core.c
new file mode 100644
index 0000000000..04713caa3b
--- /dev/null
+++ b/hw/ppc/pnv_core.c
@@ -0,0 +1,182 @@
+/*
+ * 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 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/sysemu.h"
+#include "qapi/error.h"
+#include "target-ppc/cpu.h"
+#include "hw/ppc/ppc.h"
+#include "hw/ppc/pnv.h"
+#include "hw/ppc/pnv_core.h"
+
+static void powernv_cpu_reset(void *opaque)
+{
+ PowerPCCPU *cpu = opaque;
+ CPUState *cs = CPU(cpu);
+ CPUPPCState *env = &cpu->env;
+
+ 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 */
+}
+
+static void powernv_cpu_init(PowerPCCPU *cpu, Error **errp)
+{
+ CPUPPCState *env = &cpu->env;
+ int core_pir;
+ int thread_index = 0; /* TODO: TCG supports only one thread */
+ ppc_spr_t *pir = &env->spr_cb[SPR_PIR];
+
+ core_pir = object_property_get_int(OBJECT(cpu), "core-pir", &error_abort);
+
+ /*
+ * The PIR of a thread is the core PIR + the thread index. We will
+ * need to find a way to get the thread index when TCG supports
+ * more than 1. We could use the object name ?
+ */
+ pir->default_value = core_pir + thread_index;
+
+ /* Set time-base frequency to 512 MHz */
+ cpu_ppc_tb_init(env, PNV_TIMEBASE_FREQ);
+
+ qemu_register_reset(powernv_cpu_reset, cpu);
+}
+
+static void pnv_core_realize_child(Object *child, Error **errp)
+{
+ Error *local_err = NULL;
+ CPUState *cs = CPU(child);
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+
+ object_property_set_bool(child, true, "realized", &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ powernv_cpu_init(cpu, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+}
+
+static void pnv_core_realize(DeviceState *dev, Error **errp)
+{
+ PnvCore *pc = PNV_CORE(OBJECT(dev));
+ CPUCore *cc = CPU_CORE(OBJECT(dev));
+ PnvCoreClass *pcc = PNV_CORE_GET_CLASS(OBJECT(dev));
+ const char *typename = object_class_get_name(pcc->cpu_oc);
+ size_t size = object_type_get_instance_size(typename);
+ Error *local_err = NULL;
+ void *obj;
+ int i, j;
+ char name[32];
+
+ pc->threads = g_malloc0(size * cc->nr_threads);
+ for (i = 0; i < cc->nr_threads; i++) {
+ obj = pc->threads + i * size;
+
+ object_initialize(obj, size, typename);
+
+ snprintf(name, sizeof(name), "thread[%d]", i);
+ object_property_add_child(OBJECT(pc), name, obj, &local_err);
+ object_property_add_alias(obj, "core-pir", OBJECT(pc),
+ "pir", &local_err);
+ if (local_err) {
+ goto err;
+ }
+ object_unref(obj);
+ }
+
+ for (j = 0; j < cc->nr_threads; j++) {
+ obj = pc->threads + j * size;
+
+ pnv_core_realize_child(obj, &local_err);
+ if (local_err) {
+ goto err;
+ }
+ }
+ return;
+
+err:
+ while (--i >= 0) {
+ obj = pc->threads + i * size;
+ object_unparent(obj);
+ }
+ g_free(pc->threads);
+ error_propagate(errp, local_err);
+}
+
+static Property pnv_core_properties[] = {
+ DEFINE_PROP_UINT32("pir", PnvCore, pir, 0),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void pnv_core_class_init(ObjectClass *oc, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(oc);
+ PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
+
+ dc->realize = pnv_core_realize;
+ dc->props = pnv_core_properties;
+ pcc->cpu_oc = cpu_class_by_name(TYPE_POWERPC_CPU, data);
+}
+
+static const TypeInfo pnv_core_info = {
+ .name = TYPE_PNV_CORE,
+ .parent = TYPE_CPU_CORE,
+ .instance_size = sizeof(PnvCore),
+ .class_size = sizeof(PnvCoreClass),
+ .abstract = true,
+};
+
+static const char *pnv_core_models[] = {
+ "POWER8E", "POWER8", "POWER8NVL", "POWER9"
+};
+
+static void pnv_core_register_types(void)
+{
+ int i ;
+
+ type_register_static(&pnv_core_info);
+ for (i = 0; i < ARRAY_SIZE(pnv_core_models); ++i) {
+ TypeInfo ti = {
+ .parent = TYPE_PNV_CORE,
+ .instance_size = sizeof(PnvCore),
+ .class_init = pnv_core_class_init,
+ .class_data = (void *) pnv_core_models[i],
+ };
+ ti.name = pnv_core_typename(pnv_core_models[i]);
+ type_register(&ti);
+ g_free((void *)ti.name);
+ }
+}
+
+type_init(pnv_core_register_types)
+
+char *pnv_core_typename(const char *model)
+{
+ return g_strdup_printf(TYPE_PNV_CORE "-%s", model);
+}
diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index b7987f8208..cec869ce6b 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -47,6 +47,7 @@ typedef struct PnvChip {
uint32_t nr_cores;
uint64_t cores_mask;
+ void *cores;
} PnvChip;
typedef struct PnvChipClass {
@@ -103,5 +104,6 @@ typedef struct PnvMachineState {
} PnvMachineState;
#define PNV_FDT_ADDR 0x01000000
+#define PNV_TIMEBASE_FREQ 512000000ULL
#endif /* _PPC_PNV_H */
diff --git a/include/hw/ppc/pnv_core.h b/include/hw/ppc/pnv_core.h
new file mode 100644
index 0000000000..a151e281c0
--- /dev/null
+++ b/include/hw/ppc/pnv_core.h
@@ -0,0 +1,48 @@
+/*
+ * 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 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_CORE_H
+#define _PPC_PNV_CORE_H
+
+#include "hw/cpu/core.h"
+
+#define TYPE_PNV_CORE "powernv-cpu-core"
+#define PNV_CORE(obj) \
+ OBJECT_CHECK(PnvCore, (obj), TYPE_PNV_CORE)
+#define PNV_CORE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(PnvCoreClass, (klass), TYPE_PNV_CORE)
+#define PNV_CORE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(PnvCoreClass, (obj), TYPE_PNV_CORE)
+
+typedef struct PnvCore {
+ /*< private >*/
+ CPUCore parent_obj;
+
+ /*< public >*/
+ void *threads;
+ uint32_t pir;
+} PnvCore;
+
+typedef struct PnvCoreClass {
+ DeviceClass parent_class;
+ ObjectClass *cpu_oc;
+} PnvCoreClass;
+
+extern char *pnv_core_typename(const char *model);
+
+#endif /* _PPC_PNV_CORE_H */
generated by cgit v1.2.1 (git 2.18.0) at 2024-07-01 10:55:00 +0000