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[176.184.10.250]) by smtp.gmail.com with ESMTPSA id ov10-20020a170906fc0a00b00a599ec95792sm6237941ejb.162.2024.05.08.10.47.21 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 08 May 2024 10:47:22 -0700 (PDT) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Jiaxun Yang , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PULL 24/26] hw/intc/loongarch_ipi: Rename as loongson_ipi Date: Wed, 8 May 2024 19:45:08 +0200 Message-ID: <20240508174510.60470-25-philmd@linaro.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240508174510.60470-1-philmd@linaro.org> References: <20240508174510.60470-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::633; envelope-from=philmd@linaro.org; helo=mail-ej1-x633.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Jiaxun Yang This device will be shared among LoongArch and MIPS based Loongson machine, rename it as loongson_ipi to reflect this nature. Signed-off-by: Jiaxun Yang Reviewed-by: Philippe Mathieu-Daudé Message-ID: <20240508-loongson3-ipi-v1-2-1a7b67704664@flygoat.com> Signed-off-by: Philippe Mathieu-Daudé --- MAINTAINERS | 4 + .../intc/{loongarch_ipi.h => loongson_ipi.h} | 12 +- include/hw/loongarch/virt.h | 2 +- hw/intc/loongson_ipi.c | 347 ++++++++++++++++++ hw/loongarch/virt.c | 4 +- hw/intc/Kconfig | 2 +- hw/intc/meson.build | 2 +- hw/intc/trace-events | 6 +- hw/loongarch/Kconfig | 2 +- 9 files changed, 366 insertions(+), 15 deletions(-) rename include/hw/intc/{loongarch_ipi.h => loongson_ipi.h} (84%) create mode 100644 hw/intc/loongson_ipi.c diff --git a/MAINTAINERS b/MAINTAINERS index 84391777db..7097f31245 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1242,7 +1242,9 @@ F: configs/devices/loongarch64-softmmu/default.mak F: hw/loongarch/ F: include/hw/loongarch/virt.h F: include/hw/intc/loongarch_*.h +F: include/hw/intc/loongson_ipi.h F: hw/intc/loongarch_*.c +F: hw/intc/loongson_ipi.c F: include/hw/pci-host/ls7a.h F: hw/rtc/ls7a_rtc.c F: gdb-xml/loongarch*.xml @@ -1376,10 +1378,12 @@ Loongson-3 virtual platforms M: Huacai Chen R: Jiaxun Yang S: Maintained +F: hw/intc/loongson_ipi.c F: hw/intc/loongson_liointc.c F: hw/mips/loongson3_bootp.c F: hw/mips/loongson3_bootp.h F: hw/mips/loongson3_virt.c +F: include/hw/intc/loongson_ipi.h F: include/hw/intc/loongson_liointc.h F: tests/avocado/machine_mips_loongson3v.py diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongson_ipi.h similarity index 84% rename from include/hw/intc/loongarch_ipi.h rename to include/hw/intc/loongson_ipi.h index 1c1e834849..2c0e8820f5 100644 --- a/include/hw/intc/loongarch_ipi.h +++ b/include/hw/intc/loongson_ipi.h @@ -1,12 +1,12 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ /* - * LoongArch ipi interrupt header files + * Loongson ipi interrupt header files * * Copyright (C) 2021 Loongson Technology Corporation Limited */ -#ifndef HW_LOONGARCH_IPI_H -#define HW_LOONGARCH_IPI_H +#ifndef HW_LOONGSON_IPI_H +#define HW_LOONGSON_IPI_H #include "hw/sysbus.h" @@ -30,8 +30,8 @@ #define IPI_MBX_NUM 4 -#define TYPE_LOONGARCH_IPI "loongarch_ipi" -OBJECT_DECLARE_SIMPLE_TYPE(LoongArchIPI, LOONGARCH_IPI) +#define TYPE_LOONGSON_IPI "loongson_ipi" +OBJECT_DECLARE_SIMPLE_TYPE(LoongsonIPI, LOONGSON_IPI) typedef struct IPICore { uint32_t status; @@ -43,7 +43,7 @@ typedef struct IPICore { qemu_irq irq; } IPICore; -struct LoongArchIPI { +struct LoongsonIPI { SysBusDevice parent_obj; MemoryRegion ipi_iocsr_mem; MemoryRegion ipi64_iocsr_mem; diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index d8a4ddb936..2c4f5cf9c8 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -11,7 +11,7 @@ #include "target/loongarch/cpu.h" #include "hw/boards.h" #include "qemu/queue.h" -#include "hw/intc/loongarch_ipi.h" +#include "hw/intc/loongson_ipi.h" #include "hw/block/flash.h" #include "hw/loongarch/boot.h" diff --git a/hw/intc/loongson_ipi.c b/hw/intc/loongson_ipi.c new file mode 100644 index 0000000000..8c888da3b2 --- /dev/null +++ b/hw/intc/loongson_ipi.c @@ -0,0 +1,347 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Loongson ipi interrupt support + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/boards.h" +#include "hw/sysbus.h" +#include "hw/intc/loongson_ipi.h" +#include "hw/irq.h" +#include "hw/qdev-properties.h" +#include "qapi/error.h" +#include "qemu/log.h" +#include "exec/address-spaces.h" +#include "migration/vmstate.h" +#include "target/loongarch/cpu.h" +#include "trace.h" + +static MemTxResult loongson_ipi_readl(void *opaque, hwaddr addr, + uint64_t *data, + unsigned size, MemTxAttrs attrs) +{ + IPICore *s; + LoongsonIPI *ipi = opaque; + uint64_t ret = 0; + int index = 0; + + s = &ipi->cpu[attrs.requester_id]; + addr &= 0xff; + switch (addr) { + case CORE_STATUS_OFF: + ret = s->status; + break; + case CORE_EN_OFF: + ret = s->en; + break; + case CORE_SET_OFF: + ret = 0; + break; + case CORE_CLEAR_OFF: + ret = 0; + break; + case CORE_BUF_20 ... CORE_BUF_38 + 4: + index = (addr - CORE_BUF_20) >> 2; + ret = s->buf[index]; + break; + default: + qemu_log_mask(LOG_UNIMP, "invalid read: %x", (uint32_t)addr); + break; + } + + trace_loongson_ipi_read(size, (uint64_t)addr, ret); + *data = ret; + return MEMTX_OK; +} + +static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr addr, + MemTxAttrs attrs) +{ + int i, mask = 0, data = 0; + + /* + * bit 27-30 is mask for byte writing, + * if the mask is 0, we need not to do anything. + */ + if ((val >> 27) & 0xf) { + data = address_space_ldl(env->address_space_iocsr, addr, + attrs, NULL); + for (i = 0; i < 4; i++) { + /* get mask for byte writing */ + if (val & (0x1 << (27 + i))) { + mask |= 0xff << (i * 8); + } + } + } + + data &= mask; + data |= (val >> 32) & ~mask; + address_space_stl(env->address_space_iocsr, addr, + data, attrs, NULL); +} + +static int archid_cmp(const void *a, const void *b) +{ + CPUArchId *archid_a = (CPUArchId *)a; + CPUArchId *archid_b = (CPUArchId *)b; + + return archid_a->arch_id - archid_b->arch_id; +} + +static CPUArchId *find_cpu_by_archid(MachineState *ms, uint32_t id) +{ + CPUArchId apic_id, *found_cpu; + + apic_id.arch_id = id; + found_cpu = bsearch(&apic_id, ms->possible_cpus->cpus, + ms->possible_cpus->len, sizeof(*ms->possible_cpus->cpus), + archid_cmp); + + return found_cpu; +} + +static CPUState *ipi_getcpu(int arch_id) +{ + MachineState *machine = MACHINE(qdev_get_machine()); + CPUArchId *archid; + + archid = find_cpu_by_archid(machine, arch_id); + if (archid) { + return CPU(archid->cpu); + } + + return NULL; +} + +static MemTxResult mail_send(uint64_t val, MemTxAttrs attrs) +{ + uint32_t cpuid; + hwaddr addr; + CPUState *cs; + + cpuid = extract32(val, 16, 10); + cs = ipi_getcpu(cpuid); + if (cs == NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + addr = SMP_IPI_MAILBOX + CORE_BUF_20 + (val & 0x1c); + attrs.requester_id = cs->cpu_index; + send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs); + return MEMTX_OK; +} + +static MemTxResult any_send(uint64_t val, MemTxAttrs attrs) +{ + uint32_t cpuid; + hwaddr addr; + CPUState *cs; + + cpuid = extract32(val, 16, 10); + cs = ipi_getcpu(cpuid); + if (cs == NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + addr = val & 0xffff; + attrs.requester_id = cs->cpu_index; + send_ipi_data(&LOONGARCH_CPU(cs)->env, val, addr, attrs); + return MEMTX_OK; +} + +static MemTxResult loongson_ipi_writel(void *opaque, hwaddr addr, uint64_t val, + unsigned size, MemTxAttrs attrs) +{ + LoongsonIPI *ipi = opaque; + IPICore *s; + int index = 0; + uint32_t cpuid; + uint8_t vector; + CPUState *cs; + + s = &ipi->cpu[attrs.requester_id]; + addr &= 0xff; + trace_loongson_ipi_write(size, (uint64_t)addr, val); + switch (addr) { + case CORE_STATUS_OFF: + qemu_log_mask(LOG_GUEST_ERROR, "can not be written"); + break; + case CORE_EN_OFF: + s->en = val; + break; + case CORE_SET_OFF: + s->status |= val; + if (s->status != 0 && (s->status & s->en) != 0) { + qemu_irq_raise(s->irq); + } + break; + case CORE_CLEAR_OFF: + s->status &= ~val; + if (s->status == 0 && s->en != 0) { + qemu_irq_lower(s->irq); + } + break; + case CORE_BUF_20 ... CORE_BUF_38 + 4: + index = (addr - CORE_BUF_20) >> 2; + s->buf[index] = val; + break; + case IOCSR_IPI_SEND: + cpuid = extract32(val, 16, 10); + /* IPI status vector */ + vector = extract8(val, 0, 5); + cs = ipi_getcpu(cpuid); + if (cs == NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + attrs.requester_id = cs->cpu_index; + loongson_ipi_writel(ipi, CORE_SET_OFF, BIT(vector), 4, attrs); + break; + default: + qemu_log_mask(LOG_UNIMP, "invalid write: %x", (uint32_t)addr); + break; + } + + return MEMTX_OK; +} + +static const MemoryRegionOps loongson_ipi_ops = { + .read_with_attrs = loongson_ipi_readl, + .write_with_attrs = loongson_ipi_writel, + .impl.min_access_size = 4, + .impl.max_access_size = 4, + .valid.min_access_size = 4, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +/* mail send and any send only support writeq */ +static MemTxResult loongson_ipi_writeq(void *opaque, hwaddr addr, uint64_t val, + unsigned size, MemTxAttrs attrs) +{ + MemTxResult ret = MEMTX_OK; + + addr &= 0xfff; + switch (addr) { + case MAIL_SEND_OFFSET: + ret = mail_send(val, attrs); + break; + case ANY_SEND_OFFSET: + ret = any_send(val, attrs); + break; + default: + break; + } + + return ret; +} + +static const MemoryRegionOps loongson_ipi64_ops = { + .write_with_attrs = loongson_ipi_writeq, + .impl.min_access_size = 8, + .impl.max_access_size = 8, + .valid.min_access_size = 8, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void loongson_ipi_realize(DeviceState *dev, Error **errp) +{ + LoongsonIPI *s = LOONGSON_IPI(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + int i; + + if (s->num_cpu == 0) { + error_setg(errp, "num-cpu must be at least 1"); + return; + } + + memory_region_init_io(&s->ipi_iocsr_mem, OBJECT(dev), &loongson_ipi_ops, + s, "loongson_ipi_iocsr", 0x48); + + /* loongson_ipi_iocsr performs re-entrant IO through ipi_send */ + s->ipi_iocsr_mem.disable_reentrancy_guard = true; + + sysbus_init_mmio(sbd, &s->ipi_iocsr_mem); + + memory_region_init_io(&s->ipi64_iocsr_mem, OBJECT(dev), + &loongson_ipi64_ops, + s, "loongson_ipi64_iocsr", 0x118); + sysbus_init_mmio(sbd, &s->ipi64_iocsr_mem); + + s->cpu = g_new0(IPICore, s->num_cpu); + if (s->cpu == NULL) { + error_setg(errp, "Memory allocation for ExtIOICore faile"); + return; + } + + for (i = 0; i < s->num_cpu; i++) { + qdev_init_gpio_out(dev, &s->cpu[i].irq, 1); + } +} + +static const VMStateDescription vmstate_ipi_core = { + .name = "ipi-single", + .version_id = 2, + .minimum_version_id = 2, + .fields = (const VMStateField[]) { + VMSTATE_UINT32(status, IPICore), + VMSTATE_UINT32(en, IPICore), + VMSTATE_UINT32(set, IPICore), + VMSTATE_UINT32(clear, IPICore), + VMSTATE_UINT32_ARRAY(buf, IPICore, IPI_MBX_NUM * 2), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_loongson_ipi = { + .name = TYPE_LOONGSON_IPI, + .version_id = 2, + .minimum_version_id = 2, + .fields = (const VMStateField[]) { + VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongsonIPI, num_cpu, + vmstate_ipi_core, IPICore), + VMSTATE_END_OF_LIST() + } +}; + +static Property ipi_properties[] = { + DEFINE_PROP_UINT32("num-cpu", LoongsonIPI, num_cpu, 1), + DEFINE_PROP_END_OF_LIST(), +}; + +static void loongson_ipi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = loongson_ipi_realize; + device_class_set_props(dc, ipi_properties); + dc->vmsd = &vmstate_loongson_ipi; +} + +static void loongson_ipi_finalize(Object *obj) +{ + LoongsonIPI *s = LOONGSON_IPI(obj); + + g_free(s->cpu); +} + +static const TypeInfo loongson_ipi_info = { + .name = TYPE_LOONGSON_IPI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(LoongsonIPI), + .class_init = loongson_ipi_class_init, + .instance_finalize = loongson_ipi_finalize, +}; + +static void loongson_ipi_register_types(void) +{ + type_register_static(&loongson_ipi_info); +} + +type_init(loongson_ipi_register_types) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 51e0aca39b..852036467a 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -21,7 +21,7 @@ #include "net/net.h" #include "hw/loader.h" #include "elf.h" -#include "hw/intc/loongarch_ipi.h" +#include "hw/intc/loongson_ipi.h" #include "hw/intc/loongarch_extioi.h" #include "hw/intc/loongarch_pch_pic.h" #include "hw/intc/loongarch_pch_msi.h" @@ -695,7 +695,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) */ /* Create IPI device */ - ipi = qdev_new(TYPE_LOONGARCH_IPI); + ipi = qdev_new(TYPE_LOONGSON_IPI); qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus); sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index ad59abebaa..58b6d3a710 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -87,7 +87,7 @@ config GOLDFISH_PIC config M68K_IRQC bool -config LOONGARCH_IPI +config LOONGSON_IPI bool config LOONGARCH_PCH_PIC diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 58140da5f2..f4b540e6a8 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -68,7 +68,7 @@ specific_ss.add(when: 'CONFIG_XIVE', if_true: files('xive.c')) specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_XIVE'], if_true: files('spapr_xive_kvm.c')) specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c')) -specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c')) +specific_ss.add(when: 'CONFIG_LOONGSON_IPI', if_true: files('loongson_ipi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c')) diff --git a/hw/intc/trace-events b/hw/intc/trace-events index a979784f9b..b815cea129 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -291,9 +291,9 @@ sh_intc_read(unsigned size, uint64_t offset, unsigned long val) "size %u 0x%" PR sh_intc_write(unsigned size, uint64_t offset, unsigned long val) "size %u 0x%" PRIx64 " <- 0x%lx" sh_intc_set(int id, int enable) "setting interrupt group %d to %d" -# loongarch_ipi.c -loongarch_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64 -loongarch_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64 +# loongson_ipi.c +loongson_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64 +loongson_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%"PRIx64 # loongarch_pch_pic.c loongarch_pch_pic_irq_handler(int irq, int level) "irq %d level %d" loongarch_pch_pic_low_readw(unsigned size, uint64_t addr, uint64_t val) "size: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64 diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 7864050563..ad77502445 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -10,7 +10,7 @@ config LOONGARCH_VIRT select SERIAL select VIRTIO_PCI select PLATFORM_BUS - select LOONGARCH_IPI + select LOONGSON_IPI select LOONGARCH_PCH_PIC select LOONGARCH_PCH_MSI select LOONGARCH_EXTIOI