/* * Coherent Processing System emulation. * * Copyright (c) 2016 Imagination Technologies * * 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 . */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qemu/module.h" #include "hw/mips/cps.h" #include "hw/mips/mips.h" #include "hw/qdev-clock.h" #include "hw/qdev-properties.h" #include "sysemu/kvm.h" #include "sysemu/reset.h" qemu_irq get_cps_irq(MIPSCPSState *s, int pin_number) { assert(pin_number < s->num_irq); return s->gic.irq_state[pin_number].irq; } static void mips_cps_init(Object *obj) { SysBusDevice *sbd = SYS_BUS_DEVICE(obj); MIPSCPSState *s = MIPS_CPS(obj); s->clock = qdev_init_clock_in(DEVICE(obj), "clk-in", NULL, NULL, 0); /* * Cover entire address space as there do not seem to be any * constraints for the base address of CPC and GIC. */ memory_region_init(&s->container, obj, "mips-cps-container", UINT64_MAX); sysbus_init_mmio(sbd, &s->container); } static void main_cpu_reset(void *opaque) { MIPSCPU *cpu = opaque; CPUState *cs = CPU(cpu); cpu_reset(cs); } static bool cpu_mips_itu_supported(CPUMIPSState *env) { bool is_mt = (env->CP0_Config5 & (1 << CP0C5_VP)) || ase_mt_available(env); return is_mt && !kvm_enabled(); } static void mips_cps_realize(DeviceState *dev, Error **errp) { MIPSCPSState *s = MIPS_CPS(dev); target_ulong gcr_base; bool itu_present = false; if (!clock_get(s->clock)) { error_setg(errp, "CPS input clock is not connected to an output clock"); return; } for (int i = 0; i < s->num_vp; i++) { MIPSCPU *cpu = MIPS_CPU(object_new(s->cpu_type)); CPUMIPSState *env = &cpu->env; object_property_set_bool(OBJECT(cpu), "big-endian", s->cpu_is_bigendian, &error_abort); /* All VPs are halted on reset. Leave powering up to CPC. */ object_property_set_bool(OBJECT(cpu), "start-powered-off", true, &error_abort); /* All cores use the same clock tree */ qdev_connect_clock_in(DEVICE(cpu), "clk-in", s->clock); if (!qdev_realize_and_unref(DEVICE(cpu), NULL, errp)) { return; } /* Init internal devices */ cpu_mips_irq_init_cpu(cpu); cpu_mips_clock_init(cpu); if (cpu_mips_itu_supported(env)) { itu_present = true; /* Attach ITC Tag to the VP */ env->itc_tag = mips_itu_get_tag_region(&s->itu); } qemu_register_reset(main_cpu_reset, cpu); } /* Inter-Thread Communication Unit */ if (itu_present) { object_initialize_child(OBJECT(dev), "itu", &s->itu, TYPE_MIPS_ITU); object_property_set_uint(OBJECT(&s->itu), "num-fifo", 16, &error_abort); object_property_set_uint(OBJECT(&s->itu), "num-semaphores", 16, &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->itu), errp)) { return; } memory_region_add_subregion(&s->container, 0, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->itu), 0)); } /* Cluster Power Controller */ object_initialize_child(OBJECT(dev), "cpc", &s->cpc, TYPE_MIPS_CPC); object_property_set_uint(OBJECT(&s->cpc), "num-vp", s->num_vp, &error_abort); object_property_set_int(OBJECT(&s->cpc), "vp-start-running", 1, &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->cpc), errp)) { return; } memory_region_add_subregion(&s->container, 0, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->cpc), 0)); /* Global Interrupt Controller */ object_initialize_child(OBJECT(dev), "gic", &s->gic, TYPE_MIPS_GIC); object_property_set_uint(OBJECT(&s->gic), "num-vp", s->num_vp, &error_abort); object_property_set_uint(OBJECT(&s->gic), "num-irq", 128, &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) { return; } memory_region_add_subregion(&s->container, 0, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gic), 0)); /* Global Configuration Registers */ gcr_base = MIPS_CPU(first_cpu)->env.CP0_CMGCRBase << 4; object_initialize_child(OBJECT(dev), "gcr", &s->gcr, TYPE_MIPS_GCR); object_property_set_uint(OBJECT(&s->gcr), "num-vp", s->num_vp, &error_abort); object_property_set_int(OBJECT(&s->gcr), "gcr-rev", 0x800, &error_abort); object_property_set_int(OBJECT(&s->gcr), "gcr-base", gcr_base, &error_abort); object_property_set_link(OBJECT(&s->gcr), "gic", OBJECT(&s->gic.mr), &error_abort); object_property_set_link(OBJECT(&s->gcr), "cpc", OBJECT(&s->cpc.mr), &error_abort); if (!sysbus_realize(SYS_BUS_DEVICE(&s->gcr), errp)) { return; } memory_region_add_subregion(&s->container, gcr_base, sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->gcr), 0)); } static Property mips_cps_properties[] = { DEFINE_PROP_UINT32("num-vp", MIPSCPSState, num_vp, 1), DEFINE_PROP_UINT32("num-irq", MIPSCPSState, num_irq, 256), DEFINE_PROP_STRING("cpu-type", MIPSCPSState, cpu_type), DEFINE_PROP_BOOL("cpu-big-endian", MIPSCPSState, cpu_is_bigendian, false), DEFINE_PROP_END_OF_LIST() }; static void mips_cps_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); dc->realize = mips_cps_realize; device_class_set_props(dc, mips_cps_properties); } static const TypeInfo mips_cps_info = { .name = TYPE_MIPS_CPS, .parent = TYPE_SYS_BUS_DEVICE, .instance_size = sizeof(MIPSCPSState), .instance_init = mips_cps_init, .class_init = mips_cps_class_init, }; static void mips_cps_register_types(void) { type_register_static(&mips_cps_info); } type_init(mips_cps_register_types)