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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240508-loongson3-ipi-v1-2-1a7b67704664@flygoat.com> References: <20240508-loongson3-ipi-v1-0-1a7b67704664@flygoat.com> In-Reply-To: <20240508-loongson3-ipi-v1-0-1a7b67704664@flygoat.com> To: qemu-devel@nongnu.org Cc: Huacai Chen , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Song Gao , Jiaxun Yang X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=16805; i=jiaxun.yang@flygoat.com; h=from:subject:message-id; bh=Lx+O7k+C2WBGs0hlCmEOhNAyiKma2qcM3y8l7fMFfDI=; b=owGbwMvMwCHmXMhTe71c8zDjabUkhjTriudvtKqi37YfVQr4UpHq4P77t51KtOcHp5YH80SEj gQcfXu6o5SFQYyDQVZMkSVEQKlvQ+PFBdcfZP2BmcPKBDKEgYtTACbispmR4V5I15SA699fllQt 4E0z/PkvqDf3fcrqO3vlZLXb+7/6RzIydEprFhup5CbysHzs0424KVyksE+oL3tCdti/2zEy4r+ 5AQ== X-Developer-Key: i=jiaxun.yang@flygoat.com; a=openpgp; fpr=980379BEFEBFBF477EA04EF9C111949073FC0F67 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=103.168.172.156; envelope-from=jiaxun.yang@flygoat.com; helo=fhigh5-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_PASS=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @flygoat.com) X-ZM-MESSAGEID: 1715173673338100001 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-Daud=C3=A9 --- MAINTAINERS | 4 + hw/intc/Kconfig | 2 +- hw/intc/loongson_ipi.c | 347 +++++++++++++++++= ++++ hw/intc/meson.build | 2 +- hw/intc/trace-events | 6 +- hw/loongarch/Kconfig | 2 +- hw/loongarch/virt.c | 4 +- .../hw/intc/{loongarch_ipi.h =3D> loongson_ipi.h} | 12 +- include/hw/loongarch/virt.h | 2 +- 9 files changed, 366 insertions(+), 15 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 2f08cc528eb6..290dc3227baf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1241,7 +1241,9 @@ 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 @@ -1375,10 +1377,12 @@ 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 =20 diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index ad59abebaa1d..58b6d3a71003 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -87,7 +87,7 @@ config GOLDFISH_PIC config M68K_IRQC bool =20 -config LOONGARCH_IPI +config LOONGSON_IPI bool =20 config LOONGARCH_PCH_PIC diff --git a/hw/intc/loongson_ipi.c b/hw/intc/loongson_ipi.c new file mode 100644 index 000000000000..8c888da3b27c --- /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 =3D opaque; + uint64_t ret =3D 0; + int index =3D 0; + + s =3D &ipi->cpu[attrs.requester_id]; + addr &=3D 0xff; + switch (addr) { + case CORE_STATUS_OFF: + ret =3D s->status; + break; + case CORE_EN_OFF: + ret =3D s->en; + break; + case CORE_SET_OFF: + ret =3D 0; + break; + case CORE_CLEAR_OFF: + ret =3D 0; + break; + case CORE_BUF_20 ... CORE_BUF_38 + 4: + index =3D (addr - CORE_BUF_20) >> 2; + ret =3D 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 =3D ret; + return MEMTX_OK; +} + +static void send_ipi_data(CPULoongArchState *env, uint64_t val, hwaddr add= r, + MemTxAttrs attrs) +{ + int i, mask =3D 0, data =3D 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 =3D address_space_ldl(env->address_space_iocsr, addr, + attrs, NULL); + for (i =3D 0; i < 4; i++) { + /* get mask for byte writing */ + if (val & (0x1 << (27 + i))) { + mask |=3D 0xff << (i * 8); + } + } + } + + data &=3D mask; + data |=3D (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 =3D (CPUArchId *)a; + CPUArchId *archid_b =3D (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 =3D id; + found_cpu =3D 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 =3D MACHINE(qdev_get_machine()); + CPUArchId *archid; + + archid =3D 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 =3D extract32(val, 16, 10); + cs =3D ipi_getcpu(cpuid); + if (cs =3D=3D NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + addr =3D SMP_IPI_MAILBOX + CORE_BUF_20 + (val & 0x1c); + attrs.requester_id =3D 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 =3D extract32(val, 16, 10); + cs =3D ipi_getcpu(cpuid); + if (cs =3D=3D NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + addr =3D val & 0xffff; + attrs.requester_id =3D 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 =3D opaque; + IPICore *s; + int index =3D 0; + uint32_t cpuid; + uint8_t vector; + CPUState *cs; + + s =3D &ipi->cpu[attrs.requester_id]; + addr &=3D 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 =3D val; + break; + case CORE_SET_OFF: + s->status |=3D val; + if (s->status !=3D 0 && (s->status & s->en) !=3D 0) { + qemu_irq_raise(s->irq); + } + break; + case CORE_CLEAR_OFF: + s->status &=3D ~val; + if (s->status =3D=3D 0 && s->en !=3D 0) { + qemu_irq_lower(s->irq); + } + break; + case CORE_BUF_20 ... CORE_BUF_38 + 4: + index =3D (addr - CORE_BUF_20) >> 2; + s->buf[index] =3D val; + break; + case IOCSR_IPI_SEND: + cpuid =3D extract32(val, 16, 10); + /* IPI status vector */ + vector =3D extract8(val, 0, 5); + cs =3D ipi_getcpu(cpuid); + if (cs =3D=3D NULL) { + return MEMTX_DECODE_ERROR; + } + + /* override requester_id */ + attrs.requester_id =3D 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 =3D { + .read_with_attrs =3D loongson_ipi_readl, + .write_with_attrs =3D loongson_ipi_writel, + .impl.min_access_size =3D 4, + .impl.max_access_size =3D 4, + .valid.min_access_size =3D 4, + .valid.max_access_size =3D 8, + .endianness =3D 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 =3D MEMTX_OK; + + addr &=3D 0xfff; + switch (addr) { + case MAIL_SEND_OFFSET: + ret =3D mail_send(val, attrs); + break; + case ANY_SEND_OFFSET: + ret =3D any_send(val, attrs); + break; + default: + break; + } + + return ret; +} + +static const MemoryRegionOps loongson_ipi64_ops =3D { + .write_with_attrs =3D loongson_ipi_writeq, + .impl.min_access_size =3D 8, + .impl.max_access_size =3D 8, + .valid.min_access_size =3D 8, + .valid.max_access_size =3D 8, + .endianness =3D DEVICE_LITTLE_ENDIAN, +}; + +static void loongson_ipi_realize(DeviceState *dev, Error **errp) +{ + LoongsonIPI *s =3D LOONGSON_IPI(dev); + SysBusDevice *sbd =3D SYS_BUS_DEVICE(dev); + int i; + + if (s->num_cpu =3D=3D 0) { + error_setg(errp, "num-cpu must be at least 1"); + return; + } + + memory_region_init_io(&s->ipi_iocsr_mem, OBJECT(dev), &loongson_ipi_op= s, + s, "loongson_ipi_iocsr", 0x48); + + /* loongson_ipi_iocsr performs re-entrant IO through ipi_send */ + s->ipi_iocsr_mem.disable_reentrancy_guard =3D 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 =3D g_new0(IPICore, s->num_cpu); + if (s->cpu =3D=3D NULL) { + error_setg(errp, "Memory allocation for ExtIOICore faile"); + return; + } + + for (i =3D 0; i < s->num_cpu; i++) { + qdev_init_gpio_out(dev, &s->cpu[i].irq, 1); + } +} + +static const VMStateDescription vmstate_ipi_core =3D { + .name =3D "ipi-single", + .version_id =3D 2, + .minimum_version_id =3D 2, + .fields =3D (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 =3D { + .name =3D TYPE_LOONGSON_IPI, + .version_id =3D 2, + .minimum_version_id =3D 2, + .fields =3D (const VMStateField[]) { + VMSTATE_STRUCT_VARRAY_POINTER_UINT32(cpu, LoongsonIPI, num_cpu, + vmstate_ipi_core, IPICore), + VMSTATE_END_OF_LIST() + } +}; + +static Property ipi_properties[] =3D { + 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 =3D DEVICE_CLASS(klass); + + dc->realize =3D loongson_ipi_realize; + device_class_set_props(dc, ipi_properties); + dc->vmsd =3D &vmstate_loongson_ipi; +} + +static void loongson_ipi_finalize(Object *obj) +{ + LoongsonIPI *s =3D LOONGSON_IPI(obj); + + g_free(s->cpu); +} + +static const TypeInfo loongson_ipi_info =3D { + .name =3D TYPE_LOONGSON_IPI, + .parent =3D TYPE_SYS_BUS_DEVICE, + .instance_size =3D sizeof(LoongsonIPI), + .class_init =3D loongson_ipi_class_init, + .instance_finalize =3D 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/intc/meson.build b/hw/intc/meson.build index 58140da5f293..f4b540e6a8b7 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_ip= i.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('loongarc= h_pch_pic.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarc= h_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 a979784f9bee..b815cea129e2 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -291,9 +291,9 @@ sh_intc_read(unsigned size, uint64_t offset, unsigned l= ong 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" =20 -# loongarch_ipi.c -loongarch_ipi_read(unsigned size, uint64_t addr, uint64_t val) "size: %u a= ddr: 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 ad= dr: 0x%"PRIx64 "val: 0x%"PRIx64 +loongson_ipi_write(unsigned size, uint64_t addr, uint64_t val) "size: %u a= ddr: 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) "s= ize: %u addr: 0x%"PRIx64 "val: 0x%" PRIx64 diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 5727efed6d84..ccbcde5e55e5 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -8,7 +8,7 @@ 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 diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index c0999878df6a..517929cb1438 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" @@ -697,7 +697,7 @@ static void loongarch_irq_init(LoongArchMachineState *l= ams) */ =20 /* Create IPI device */ - ipi =3D qdev_new(TYPE_LOONGARCH_IPI); + ipi =3D 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); =20 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 1c1e834849e0..2c0e8820f5ec 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 */ =20 -#ifndef HW_LOONGARCH_IPI_H -#define HW_LOONGARCH_IPI_H +#ifndef HW_LOONGSON_IPI_H +#define HW_LOONGSON_IPI_H =20 #include "hw/sysbus.h" =20 @@ -30,8 +30,8 @@ =20 #define IPI_MBX_NUM 4 =20 -#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) =20 typedef struct IPICore { uint32_t status; @@ -43,7 +43,7 @@ typedef struct IPICore { qemu_irq irq; } IPICore; =20 -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 4e14bf6060d0..e1a440a751c8 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" =20 --=20 2.34.1