| Message ID | 20220108091419.2027710-21-yangxiaojuan@loongson.cn (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add LoongArch softmmu support. | expand |
On 08/01/2022 09:14, Xiaojuan Yang wrote: > This patch realize the EIOINTC interrupt controller. > > Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> > Signed-off-by: Song Gao <gaosong@loongson.cn> > --- > hw/intc/Kconfig | 3 + > hw/intc/loongarch_extioi.c | 376 +++++++++++++++++++++++++++++ > hw/intc/meson.build | 1 + > hw/intc/trace-events | 11 + > hw/loongarch/Kconfig | 1 + > include/hw/intc/loongarch_extioi.h | 69 ++++++ > 6 files changed, 461 insertions(+) > create mode 100644 hw/intc/loongarch_extioi.c > create mode 100644 include/hw/intc/loongarch_extioi.h > > diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig > index 727a3bb3e6..ecdf821205 100644 > --- a/hw/intc/Kconfig > +++ b/hw/intc/Kconfig > @@ -90,3 +90,6 @@ config LOONGARCH_PCH_MSI > select MSI_NONBROKEN > bool > select UNIMP > + > +config LOONGARCH_EXTIOI > + bool > diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c > new file mode 100644 > index 0000000000..b9a91f77b3 > --- /dev/null > +++ b/hw/intc/loongarch_extioi.c > @@ -0,0 +1,376 @@ > +/* SPDX-License-Identifier: GPL-2.0-or-later */ > +/* > + * Loongson 3A5000 ext interrupt controller emulation > + * > + * Copyright (C) 2021 Loongson Technology Corporation Limited > + */ > + > +#include "qemu/osdep.h" > +#include "qemu/module.h" > +#include "qemu/log.h" > +#include "hw/irq.h" > +#include "hw/sysbus.h" > +#include "hw/loongarch/loongarch.h" > +#include "hw/qdev-properties.h" > +#include "exec/address-spaces.h" > +#include "hw/intc/loongarch_extioi.h" > +#include "migration/vmstate.h" > +#include "trace.h" > + > +static void extioi_update_irq(void *opaque, int irq_num, int level) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t ipnum, cpu; > + unsigned long found1, found2; > + > + ipnum = s->sw_ipmap[irq_num]; > + cpu = s->sw_coremap[irq_num]; > + if (level == 1) { > + if (test_bit(irq_num, (void *)s->enable) == false) { > + return; > + } > + bitmap_set((void *)s->coreisr[cpu], irq_num, 1); > + found1 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), > + EXTIOI_IRQS, 0); > + bitmap_set((void *)&(s->sw_ipisr[cpu][ipnum]), irq_num, 1); > + > + if (found1 >= EXTIOI_IRQS) { > + qemu_set_irq(s->parent_irq[cpu][ipnum], level); > + } > + } else { > + bitmap_clear((void *)s->coreisr[cpu], irq_num, 1); > + found1 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), > + EXTIOI_IRQS, 0); > + bitmap_clear((void *)&(s->sw_ipisr[cpu][ipnum]), irq_num, 1); > + found2 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), > + EXTIOI_IRQS, 0); > + > + if ((found1 < EXTIOI_IRQS) && (found2 >= EXTIOI_IRQS)) { > + qemu_set_irq(s->parent_irq[cpu][ipnum], level); > + } > + } > +} > + > +static void extioi_setirq(void *opaque, int irq, int level) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + trace_extioi_setirq(irq, level); > + extioi_update_irq(s, irq, level); > +} > + > +static uint64_t extioi_readw(void *opaque, hwaddr addr, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + unsigned long offset = addr & 0xffff; > + uint32_t ret, index; > + int cpu; > + > + if ((offset >= EXTIOI_NODETYPE_START) && (offset < EXTIOI_NODETYPE_END)) { > + index = (offset - EXTIOI_NODETYPE_START) >> 2; > + ret = s->nodetype[index]; > + } else if ((offset >= EXTIOI_BOUNCE_START) && > + (offset < EXTIOI_BOUNCE_END)) { > + index = (offset - EXTIOI_BOUNCE_START) >> 2; > + ret = s->bounce[index]; > + } else if ((offset >= EXTIOI_COREISR_START) && > + (offset < EXTIOI_COREISR_END)) { > + index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2; > + cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3; > + ret = s->coreisr[cpu][index]; > + } Please can you use a switch() statement here? > + trace_loongarch_extioi_readw((uint32_t)addr, ret); > + return ret; > +} > + > +static void extioi_writew(void *opaque, hwaddr addr, > + uint64_t val, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + int cpu, index; > + uint32_t offset, old_data, i, j, bits; > + > + offset = addr & 0xffff; > + trace_loongarch_extioi_writew(size, (uint32_t)addr, val); > + > + if ((offset >= EXTIOI_NODETYPE_START) && (offset < EXTIOI_NODETYPE_END)) { > + index = (offset - EXTIOI_NODETYPE_START) >> 2; > + s->nodetype[index] = val; > + } else if ((offset >= EXTIOI_BOUNCE_START) && > + (offset < EXTIOI_BOUNCE_END)) { > + index = (offset - EXTIOI_BOUNCE_START) >> 2; > + s->bounce[index] = val; > + } else if ((offset >= EXTIOI_COREISR_START) && > + (offset < EXTIOI_COREISR_END)) { > + index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2; > + cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3; > + > + /* Ext_core_ioisr */ > + old_data = s->coreisr[cpu][index]; > + s->coreisr[cpu][index] = old_data & ~val; > + > + if (old_data != s->coreisr[cpu][index]) { > + bits = size * 8; > + while ((i = find_first_bit((void *)&val, bits)) != bits) { > + j = test_bit(i, (unsigned long *)&old_data); > + if (j) { > + extioi_update_irq(s, i + index * 32, 0); > + } > + clear_bit(i, (void *)&val); > + } > + } > + } And here too. > +} > + > +static uint64_t extioi_enable_read(void *opaque, hwaddr addr, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t ret; > + > + if (addr < EXTIOI_ENABLE_END) { This hard limit shouldn't be required... > + ret = s->enable[addr]; > + } > + > + trace_loongarch_extioi_enable_read((uint8_t)addr, ret); > + return ret; > +} > + > +static void extioi_enable_write(void *opaque, hwaddr addr, > + uint64_t value, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t old_data, val = value & 0xff; > + int i, level; > + > + trace_loongarch_extioi_enable_write(size, (uint8_t)addr, val); > + if (addr < EXTIOI_ENABLE_END) { > + old_data = s->enable[addr]; or here. > + if (old_data != val) { > + s->enable[addr] = val; > + old_data = old_data ^ val; > + > + while ((i = find_first_bit((void *)&old_data, 8)) != 8) { > + level = test_bit(i, (unsigned long *)&val); > + extioi_update_irq(s, i + addr * 8, level); > + clear_bit(i, (void *)&old_data); > + } > + } > + } > +} > + > +static uint64_t extioi_ipmap_read(void *opaque, hwaddr addr, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t ret; > + > + if (addr < EXTIOI_IPMAP_END) { > + ret = s->ipmap[addr]; > + } Or here. > + trace_loongarch_extioi_ipmap_read((uint8_t)addr, ret); > + return ret; > +} > + > +static void extioi_ipmap_write(void *opaque, hwaddr addr, > + uint64_t value, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t val = value & 0xff; > + int i, ipnum, irqnum; > + > + trace_loongarch_extioi_ipmap_write(size, (uint8_t)addr, val); > + if (addr < EXTIOI_IPMAP_END) { > + s->ipmap[addr] = val; Or here. > + /* Routing in groups of 32 interrupt */ > + ipnum = find_first_bit((void *)&val, 4); > + for (i = 0; i < 32; i++) { > + irqnum = addr * 32 + i; > + if (ipnum != 4) { > + s->sw_ipmap[irqnum] = ipnum; > + } else { > + s->sw_ipmap[irqnum] = 0; > + } > + } > + } > +} > + > +static uint64_t extioi_coremap_read(void *opaque, hwaddr addr, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t ret; > + > + if (addr < EXTIOI_COREMAP_END) { > + ret = s->coremap[addr]; > + } Or here. > + trace_loongarch_extioi_coremap_read((uint8_t)addr, ret); > + return ret; > +} > + > +static void extioi_coremap_write(void *opaque, hwaddr addr, > + uint64_t value, unsigned size) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); > + uint8_t val = value & 0xff; > + int cpu; > + > + trace_loongarch_extioi_coremap_write(size, (uint8_t)addr, val); > + if (addr < EXTIOI_COREMAP_END) { > + s->coremap[addr] = val; Or here... > + /* Only support 1 node now only handle the core map*/ > + if (val) { > + cpu = find_first_bit((void *)&val, 4); > + if (cpu != 4) { > + s->sw_coremap[addr] = cpu; > + } > + } > + } > +} > + > +static const MemoryRegionOps extioi_reg32_ops = { > + .read = extioi_readw, > + .write = extioi_writew, > + .impl.min_access_size = 4, > + .impl.max_access_size = 4, > + .valid.min_access_size = 4, > + .valid.max_access_size = 8, > + .endianness = DEVICE_LITTLE_ENDIAN, > +}; > + > +static const MemoryRegionOps extioi_enable_ops = { > + .read = extioi_enable_read, > + .write = extioi_enable_write, > + .impl.min_access_size = 1, > + .impl.max_access_size = 1, > + .valid.min_access_size = 1, > + .valid.max_access_size = 8, > + .endianness = DEVICE_LITTLE_ENDIAN, > +}; > + > +static const MemoryRegionOps extioi_ipmap_ops = { > + .read = extioi_ipmap_read, > + .write = extioi_ipmap_write, > + .impl.min_access_size = 1, > + .impl.max_access_size = 1, > + .valid.min_access_size = 1, > + .valid.max_access_size = 8, > + .endianness = DEVICE_LITTLE_ENDIAN, > +}; > + > +static const MemoryRegionOps extioi_coremap_ops = { > + .read = extioi_coremap_read, > + .write = extioi_coremap_write, > + .impl.min_access_size = 1, > + .impl.max_access_size = 1, > + .valid.min_access_size = 1, > + .valid.max_access_size = 8, > + .endianness = DEVICE_LITTLE_ENDIAN, > +}; > + > +static void loongarch_extioi_realize(DeviceState *dev, Error **errp) > +{ > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(dev); > + MachineState *ms = MACHINE(qdev_get_machine()); > + int cpu; > + > + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { > + memory_region_init_io(&s->mmio_reg32[cpu], OBJECT(s), > + &extioi_reg32_ops, s, TYPE_LOONGARCH_EXTIOI, > + 0x900); > + /* > + * kernel use anysend to handle enable reg. > + * need support different size handle. > + */ > + memory_region_init_io(&s->mmio_enable[cpu], OBJECT(s), > + &extioi_enable_ops, s, TYPE_LOONGARCH_EXTIOI, > + 0x18); > + memory_region_init_io(&s->mmio_ipmap[cpu], OBJECT(s), > + &extioi_ipmap_ops, s, TYPE_LOONGARCH_EXTIOI, (side note: you could make the output of "info mtree" more helpful by extending the description based upon TYPE_LOONGARCH_EXTIOI with its purpose i.e. TYPE_LOONGARCH_EXTIOI ".enable" and TYPE_LOONGARCH_EXTIOI ".ipmap") > + 0x8); > + memory_region_init_io(&s->mmio_coremap[cpu], OBJECT(s), > + &extioi_coremap_ops, s, TYPE_LOONGARCH_EXTIOI, > + 0x100); ... since the sizes are already restricted by the memory regions here. Could you reuse the constants below rather than hardcoding them? > + } > +} > + > +static const VMStateDescription vmstate_ext_sw_ipisr = { > + .name = "ext_sw_ipisr", > + .version_id = 1, > + .minimum_version_id = 1, > + .fields = (VMStateField[]) { > + VMSTATE_UINT8_ARRAY(irq, ext_sw_ipisr, EXTIOI_IRQS), > + VMSTATE_END_OF_LIST() > + } > +}; > + > +static const VMStateDescription vmstate_loongarch_extioi = { > + .name = TYPE_LOONGARCH_EXTIOI, > + .version_id = 1, > + .minimum_version_id = 1, > + .fields = (VMStateField[]) { > + VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOI, EXTIOI_IRQS_GROUP_COUNT), > + VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, MAX_CORES, > + EXTIOI_IRQS_GROUP_COUNT), > + VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOI, > + EXTIOI_IRQS_NODETYPE_COUNT / 2), > + VMSTATE_UINT8_ARRAY(enable, LoongArchExtIOI, EXTIOI_IRQS / 8), > + VMSTATE_UINT8_ARRAY(ipmap, LoongArchExtIOI, 8), > + VMSTATE_UINT8_ARRAY(coremap, LoongArchExtIOI, EXTIOI_IRQS), > + VMSTATE_UINT8_ARRAY(sw_ipmap, LoongArchExtIOI, EXTIOI_IRQS), > + VMSTATE_UINT8_ARRAY(sw_coremap, LoongArchExtIOI, EXTIOI_IRQS), > + VMSTATE_STRUCT_2DARRAY(sw_ipisr, LoongArchExtIOI, MAX_CORES, > + LS3A_INTC_IP, 1, vmstate_ext_sw_ipisr, > + ext_sw_ipisr), > + VMSTATE_END_OF_LIST() > + } > +}; > + > +static void loongarch_extioi_instance_init(Object *obj) > +{ > + SysBusDevice *dev = SYS_BUS_DEVICE(obj); > + LoongArchExtIOI *s = LOONGARCH_EXTIOI(obj); > + MachineState *ms = MACHINE(qdev_get_machine()); > + int i, cpu, pin; > + > + for (i = 0; i < EXTIOI_IRQS; i++) { > + sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]); > + } > + > + qdev_init_gpio_in(DEVICE(obj), extioi_setirq, EXTIOI_IRQS); > + > + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { > + sysbus_init_mmio(dev, &s->mmio_reg32[cpu]); > + sysbus_init_mmio(dev, &s->mmio_enable[cpu]); > + sysbus_init_mmio(dev, &s->mmio_ipmap[cpu]); > + sysbus_init_mmio(dev, &s->mmio_coremap[cpu]); > + for (pin = 0; pin < LS3A_INTC_IP; pin++) { > + qdev_init_gpio_out(DEVICE(obj), &s->parent_irq[cpu][pin], 1); > + } > + } > +} > + > +static void loongarch_extioi_class_init(ObjectClass *klass, void *data) > +{ > + DeviceClass *dc = DEVICE_CLASS(klass); > + > + dc->vmsd = &vmstate_loongarch_extioi; > + dc->realize = loongarch_extioi_realize; > +} > + > +static const TypeInfo loongarch_extioi_info = { > + .name = TYPE_LOONGARCH_EXTIOI, > + .parent = TYPE_SYS_BUS_DEVICE, > + .instance_init = loongarch_extioi_instance_init, > + .instance_size = sizeof(struct LoongArchExtIOI), > + .class_init = loongarch_extioi_class_init, > +}; > + > +static void loongarch_extioi_register_types(void) > +{ > + type_register_static(&loongarch_extioi_info); > +} > + > +type_init(loongarch_extioi_register_types) > diff --git a/hw/intc/meson.build b/hw/intc/meson.build > index c679223420..d09eb6b81d 100644 > --- a/hw/intc/meson.build > +++ b/hw/intc/meson.build > @@ -63,3 +63,4 @@ 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_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 6d2d041766..8f7854196b 100644 > --- a/hw/intc/trace-events > +++ b/hw/intc/trace-events > @@ -260,3 +260,14 @@ loongarch_pch_pic_writeb(unsigned size, uint32_t addr, unsigned long val) "size: > > # loongarch_pch_msi.c > loongarch_msi_set_irq(int irq_num) "set msi irq %d" > + > +# loongarch_extioi.c > +extioi_setirq(int irq, int level) "set extirq irq %d level %d" > +loongarch_extioi_readw(uint32_t addr, uint32_t val) "addr: 0x%"PRIx32 "val: 0x%" PRIx32 > +loongarch_extioi_writew(unsigned size, uint32_t addr, uint32_t val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx32 > +loongarch_extioi_enable_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 > +loongarch_extioi_enable_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 > +loongarch_extioi_ipmap_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 > +loongarch_extioi_ipmap_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 > +loongarch_extioi_coremap_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 > +loongarch_extioi_coremap_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 > diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig > index cd38d03a19..468e3acc74 100644 > --- a/hw/loongarch/Kconfig > +++ b/hw/loongarch/Kconfig > @@ -4,3 +4,4 @@ config LOONGSON3_LS7A > select LOONGARCH_IPI > select LOONGARCH_PCH_PIC > select LOONGARCH_PCH_MSI > + select LOONGARCH_EXTIOI > diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h > new file mode 100644 > index 0000000000..12f3175183 > --- /dev/null > +++ b/include/hw/intc/loongarch_extioi.h > @@ -0,0 +1,69 @@ > +/* SPDX-License-Identifier: GPL-2.0-or-later */ > +/* > + * LoongArch 3A5000 ext interrupt controller definitions > + * > + * Copyright (C) 2021 Loongson Technology Corporation Limited > + */ > + > +#include "hw/sysbus.h" > +#include "hw/loongarch/loongarch.h" > + > +#ifndef LOONGARCH_EXTIOI_H > +#define LOONGARCH_EXTIOI_H > + > +#define LS3A_INTC_IP 8 > +#define MAX_CORES LOONGARCH_MAX_VCPUS > +#define EXTIOI_IRQS (256) > +/* 32 irqs belong to a group */ > +#define EXTIOI_IRQS_GROUP_COUNT (256 / 32) > +/* map to ipnum per 32 irqs */ > +#define EXTIOI_IRQS_NODETYPE_COUNT 16 > + > +#define APIC_BASE 0x1400 > +#define ENABLE_OFFSET 0x1600 > +#define IPMAP_OFFSET 0x14c0 > +#define COREMAP_OFFSET 0x1c00 > + > +#define EXTIOI_NODETYPE_START (0x14a0 - APIC_BASE) > +#define EXTIOI_NODETYPE_END (0x14c0 - APIC_BASE) > +#define EXTIOI_BOUNCE_START (0x1680 - APIC_BASE) > +#define EXTIOI_BOUNCE_END (0x16a0 - APIC_BASE) > +#define EXTIOI_COREISR_START (0x1800 - APIC_BASE) > +#define EXTIOI_COREISR_END (0x1B20 - APIC_BASE) > + > +#define EXTIOI_ENABLE_END (0x1618 - ENABLE_OFFSET) > +#define EXTIOI_IPMAP_END (0x14c8 - IPMAP_OFFSET) > +#define EXTIOI_COREMAP_END (0x1d00 - COREMAP_OFFSET) > + > +#define TYPE_LOONGARCH_EXTIOI "loongarch.extioi" > +DECLARE_INSTANCE_CHECKER(struct LoongArchExtIOI, LOONGARCH_EXTIOI, > + TYPE_LOONGARCH_EXTIOI) > + > +typedef struct ext_sw_ipisr { > + uint8_t irq[EXTIOI_IRQS]; > +} ext_sw_ipisr; > + > +typedef struct LoongArchExtIOI { > + SysBusDevice parent_obj; > + /* hardware state */ > + uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2]; > + uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT]; > + uint32_t coreisr[MAX_CORES][EXTIOI_IRQS_GROUP_COUNT]; > + > + uint8_t enable[EXTIOI_IRQS / 8]; > + uint8_t ipmap[8]; > + uint8_t coremap[EXTIOI_IRQS]; > + /*software state */ > + uint8_t sw_ipmap[EXTIOI_IRQS]; > + uint8_t sw_coremap[EXTIOI_IRQS]; > + ext_sw_ipisr sw_ipisr[MAX_CORES][LS3A_INTC_IP]; > + > + qemu_irq parent_irq[MAX_CORES][LS3A_INTC_IP]; > + qemu_irq irq[EXTIOI_IRQS]; > + MemoryRegion mmio_reg32[MAX_CORES]; > + MemoryRegion mmio_enable[MAX_CORES]; > + MemoryRegion mmio_ipmap[MAX_CORES]; > + MemoryRegion mmio_coremap[MAX_CORES]; > +} LoongArchExtIOI; > + > +#endif /* LOONGARCH_EXTIOI_H */
diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index 727a3bb3e6..ecdf821205 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -90,3 +90,6 @@ config LOONGARCH_PCH_MSI select MSI_NONBROKEN bool select UNIMP + +config LOONGARCH_EXTIOI + bool diff --git a/hw/intc/loongarch_extioi.c b/hw/intc/loongarch_extioi.c new file mode 100644 index 0000000000..b9a91f77b3 --- /dev/null +++ b/hw/intc/loongarch_extioi.c @@ -0,0 +1,376 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Loongson 3A5000 ext interrupt controller emulation + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "qemu/module.h" +#include "qemu/log.h" +#include "hw/irq.h" +#include "hw/sysbus.h" +#include "hw/loongarch/loongarch.h" +#include "hw/qdev-properties.h" +#include "exec/address-spaces.h" +#include "hw/intc/loongarch_extioi.h" +#include "migration/vmstate.h" +#include "trace.h" + +static void extioi_update_irq(void *opaque, int irq_num, int level) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t ipnum, cpu; + unsigned long found1, found2; + + ipnum = s->sw_ipmap[irq_num]; + cpu = s->sw_coremap[irq_num]; + if (level == 1) { + if (test_bit(irq_num, (void *)s->enable) == false) { + return; + } + bitmap_set((void *)s->coreisr[cpu], irq_num, 1); + found1 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), + EXTIOI_IRQS, 0); + bitmap_set((void *)&(s->sw_ipisr[cpu][ipnum]), irq_num, 1); + + if (found1 >= EXTIOI_IRQS) { + qemu_set_irq(s->parent_irq[cpu][ipnum], level); + } + } else { + bitmap_clear((void *)s->coreisr[cpu], irq_num, 1); + found1 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), + EXTIOI_IRQS, 0); + bitmap_clear((void *)&(s->sw_ipisr[cpu][ipnum]), irq_num, 1); + found2 = find_next_bit((void *)&(s->sw_ipisr[cpu][ipnum]), + EXTIOI_IRQS, 0); + + if ((found1 < EXTIOI_IRQS) && (found2 >= EXTIOI_IRQS)) { + qemu_set_irq(s->parent_irq[cpu][ipnum], level); + } + } +} + +static void extioi_setirq(void *opaque, int irq, int level) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + trace_extioi_setirq(irq, level); + extioi_update_irq(s, irq, level); +} + +static uint64_t extioi_readw(void *opaque, hwaddr addr, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + unsigned long offset = addr & 0xffff; + uint32_t ret, index; + int cpu; + + if ((offset >= EXTIOI_NODETYPE_START) && (offset < EXTIOI_NODETYPE_END)) { + index = (offset - EXTIOI_NODETYPE_START) >> 2; + ret = s->nodetype[index]; + } else if ((offset >= EXTIOI_BOUNCE_START) && + (offset < EXTIOI_BOUNCE_END)) { + index = (offset - EXTIOI_BOUNCE_START) >> 2; + ret = s->bounce[index]; + } else if ((offset >= EXTIOI_COREISR_START) && + (offset < EXTIOI_COREISR_END)) { + index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2; + cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3; + ret = s->coreisr[cpu][index]; + } + + trace_loongarch_extioi_readw((uint32_t)addr, ret); + return ret; +} + +static void extioi_writew(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + int cpu, index; + uint32_t offset, old_data, i, j, bits; + + offset = addr & 0xffff; + trace_loongarch_extioi_writew(size, (uint32_t)addr, val); + + if ((offset >= EXTIOI_NODETYPE_START) && (offset < EXTIOI_NODETYPE_END)) { + index = (offset - EXTIOI_NODETYPE_START) >> 2; + s->nodetype[index] = val; + } else if ((offset >= EXTIOI_BOUNCE_START) && + (offset < EXTIOI_BOUNCE_END)) { + index = (offset - EXTIOI_BOUNCE_START) >> 2; + s->bounce[index] = val; + } else if ((offset >= EXTIOI_COREISR_START) && + (offset < EXTIOI_COREISR_END)) { + index = ((offset - EXTIOI_COREISR_START) & 0x1f) >> 2; + cpu = ((offset - EXTIOI_COREISR_START) >> 8) & 0x3; + + /* Ext_core_ioisr */ + old_data = s->coreisr[cpu][index]; + s->coreisr[cpu][index] = old_data & ~val; + + if (old_data != s->coreisr[cpu][index]) { + bits = size * 8; + while ((i = find_first_bit((void *)&val, bits)) != bits) { + j = test_bit(i, (unsigned long *)&old_data); + if (j) { + extioi_update_irq(s, i + index * 32, 0); + } + clear_bit(i, (void *)&val); + } + } + } +} + +static uint64_t extioi_enable_read(void *opaque, hwaddr addr, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t ret; + + if (addr < EXTIOI_ENABLE_END) { + ret = s->enable[addr]; + } + + trace_loongarch_extioi_enable_read((uint8_t)addr, ret); + return ret; +} + +static void extioi_enable_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t old_data, val = value & 0xff; + int i, level; + + trace_loongarch_extioi_enable_write(size, (uint8_t)addr, val); + if (addr < EXTIOI_ENABLE_END) { + old_data = s->enable[addr]; + + if (old_data != val) { + s->enable[addr] = val; + old_data = old_data ^ val; + + while ((i = find_first_bit((void *)&old_data, 8)) != 8) { + level = test_bit(i, (unsigned long *)&val); + extioi_update_irq(s, i + addr * 8, level); + clear_bit(i, (void *)&old_data); + } + } + } +} + +static uint64_t extioi_ipmap_read(void *opaque, hwaddr addr, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t ret; + + if (addr < EXTIOI_IPMAP_END) { + ret = s->ipmap[addr]; + } + + trace_loongarch_extioi_ipmap_read((uint8_t)addr, ret); + return ret; +} + +static void extioi_ipmap_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t val = value & 0xff; + int i, ipnum, irqnum; + + trace_loongarch_extioi_ipmap_write(size, (uint8_t)addr, val); + if (addr < EXTIOI_IPMAP_END) { + s->ipmap[addr] = val; + + /* Routing in groups of 32 interrupt */ + ipnum = find_first_bit((void *)&val, 4); + for (i = 0; i < 32; i++) { + irqnum = addr * 32 + i; + if (ipnum != 4) { + s->sw_ipmap[irqnum] = ipnum; + } else { + s->sw_ipmap[irqnum] = 0; + } + } + } +} + +static uint64_t extioi_coremap_read(void *opaque, hwaddr addr, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t ret; + + if (addr < EXTIOI_COREMAP_END) { + ret = s->coremap[addr]; + } + + trace_loongarch_extioi_coremap_read((uint8_t)addr, ret); + return ret; +} + +static void extioi_coremap_write(void *opaque, hwaddr addr, + uint64_t value, unsigned size) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(opaque); + uint8_t val = value & 0xff; + int cpu; + + trace_loongarch_extioi_coremap_write(size, (uint8_t)addr, val); + if (addr < EXTIOI_COREMAP_END) { + s->coremap[addr] = val; + + /* Only support 1 node now only handle the core map*/ + if (val) { + cpu = find_first_bit((void *)&val, 4); + if (cpu != 4) { + s->sw_coremap[addr] = cpu; + } + } + } +} + +static const MemoryRegionOps extioi_reg32_ops = { + .read = extioi_readw, + .write = extioi_writew, + .impl.min_access_size = 4, + .impl.max_access_size = 4, + .valid.min_access_size = 4, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static const MemoryRegionOps extioi_enable_ops = { + .read = extioi_enable_read, + .write = extioi_enable_write, + .impl.min_access_size = 1, + .impl.max_access_size = 1, + .valid.min_access_size = 1, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static const MemoryRegionOps extioi_ipmap_ops = { + .read = extioi_ipmap_read, + .write = extioi_ipmap_write, + .impl.min_access_size = 1, + .impl.max_access_size = 1, + .valid.min_access_size = 1, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static const MemoryRegionOps extioi_coremap_ops = { + .read = extioi_coremap_read, + .write = extioi_coremap_write, + .impl.min_access_size = 1, + .impl.max_access_size = 1, + .valid.min_access_size = 1, + .valid.max_access_size = 8, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void loongarch_extioi_realize(DeviceState *dev, Error **errp) +{ + LoongArchExtIOI *s = LOONGARCH_EXTIOI(dev); + MachineState *ms = MACHINE(qdev_get_machine()); + int cpu; + + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { + memory_region_init_io(&s->mmio_reg32[cpu], OBJECT(s), + &extioi_reg32_ops, s, TYPE_LOONGARCH_EXTIOI, + 0x900); + /* + * kernel use anysend to handle enable reg. + * need support different size handle. + */ + memory_region_init_io(&s->mmio_enable[cpu], OBJECT(s), + &extioi_enable_ops, s, TYPE_LOONGARCH_EXTIOI, + 0x18); + memory_region_init_io(&s->mmio_ipmap[cpu], OBJECT(s), + &extioi_ipmap_ops, s, TYPE_LOONGARCH_EXTIOI, + 0x8); + memory_region_init_io(&s->mmio_coremap[cpu], OBJECT(s), + &extioi_coremap_ops, s, TYPE_LOONGARCH_EXTIOI, + 0x100); + } +} + +static const VMStateDescription vmstate_ext_sw_ipisr = { + .name = "ext_sw_ipisr", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT8_ARRAY(irq, ext_sw_ipisr, EXTIOI_IRQS), + VMSTATE_END_OF_LIST() + } +}; + +static const VMStateDescription vmstate_loongarch_extioi = { + .name = TYPE_LOONGARCH_EXTIOI, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(bounce, LoongArchExtIOI, EXTIOI_IRQS_GROUP_COUNT), + VMSTATE_UINT32_2DARRAY(coreisr, LoongArchExtIOI, MAX_CORES, + EXTIOI_IRQS_GROUP_COUNT), + VMSTATE_UINT32_ARRAY(nodetype, LoongArchExtIOI, + EXTIOI_IRQS_NODETYPE_COUNT / 2), + VMSTATE_UINT8_ARRAY(enable, LoongArchExtIOI, EXTIOI_IRQS / 8), + VMSTATE_UINT8_ARRAY(ipmap, LoongArchExtIOI, 8), + VMSTATE_UINT8_ARRAY(coremap, LoongArchExtIOI, EXTIOI_IRQS), + VMSTATE_UINT8_ARRAY(sw_ipmap, LoongArchExtIOI, EXTIOI_IRQS), + VMSTATE_UINT8_ARRAY(sw_coremap, LoongArchExtIOI, EXTIOI_IRQS), + VMSTATE_STRUCT_2DARRAY(sw_ipisr, LoongArchExtIOI, MAX_CORES, + LS3A_INTC_IP, 1, vmstate_ext_sw_ipisr, + ext_sw_ipisr), + VMSTATE_END_OF_LIST() + } +}; + +static void loongarch_extioi_instance_init(Object *obj) +{ + SysBusDevice *dev = SYS_BUS_DEVICE(obj); + LoongArchExtIOI *s = LOONGARCH_EXTIOI(obj); + MachineState *ms = MACHINE(qdev_get_machine()); + int i, cpu, pin; + + for (i = 0; i < EXTIOI_IRQS; i++) { + sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]); + } + + qdev_init_gpio_in(DEVICE(obj), extioi_setirq, EXTIOI_IRQS); + + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { + sysbus_init_mmio(dev, &s->mmio_reg32[cpu]); + sysbus_init_mmio(dev, &s->mmio_enable[cpu]); + sysbus_init_mmio(dev, &s->mmio_ipmap[cpu]); + sysbus_init_mmio(dev, &s->mmio_coremap[cpu]); + for (pin = 0; pin < LS3A_INTC_IP; pin++) { + qdev_init_gpio_out(DEVICE(obj), &s->parent_irq[cpu][pin], 1); + } + } +} + +static void loongarch_extioi_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_loongarch_extioi; + dc->realize = loongarch_extioi_realize; +} + +static const TypeInfo loongarch_extioi_info = { + .name = TYPE_LOONGARCH_EXTIOI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_init = loongarch_extioi_instance_init, + .instance_size = sizeof(struct LoongArchExtIOI), + .class_init = loongarch_extioi_class_init, +}; + +static void loongarch_extioi_register_types(void) +{ + type_register_static(&loongarch_extioi_info); +} + +type_init(loongarch_extioi_register_types) diff --git a/hw/intc/meson.build b/hw/intc/meson.build index c679223420..d09eb6b81d 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -63,3 +63,4 @@ 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_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 6d2d041766..8f7854196b 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -260,3 +260,14 @@ loongarch_pch_pic_writeb(unsigned size, uint32_t addr, unsigned long val) "size: # loongarch_pch_msi.c loongarch_msi_set_irq(int irq_num) "set msi irq %d" + +# loongarch_extioi.c +extioi_setirq(int irq, int level) "set extirq irq %d level %d" +loongarch_extioi_readw(uint32_t addr, uint32_t val) "addr: 0x%"PRIx32 "val: 0x%" PRIx32 +loongarch_extioi_writew(unsigned size, uint32_t addr, uint32_t val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx32 +loongarch_extioi_enable_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 +loongarch_extioi_enable_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 +loongarch_extioi_ipmap_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 +loongarch_extioi_ipmap_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 +loongarch_extioi_coremap_read(uint8_t addr, uint8_t val) "addr: 0x%"PRIu8 "val: 0x%" PRIu8 +loongarch_extioi_coremap_write(unsigned size, uint8_t addr, uint8_t val) "size: %u addr: 0x%"PRIu8 "val: 0x%" PRIu8 diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index cd38d03a19..468e3acc74 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -4,3 +4,4 @@ config LOONGSON3_LS7A select LOONGARCH_IPI select LOONGARCH_PCH_PIC select LOONGARCH_PCH_MSI + select LOONGARCH_EXTIOI diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h new file mode 100644 index 0000000000..12f3175183 --- /dev/null +++ b/include/hw/intc/loongarch_extioi.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch 3A5000 ext interrupt controller definitions + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "hw/sysbus.h" +#include "hw/loongarch/loongarch.h" + +#ifndef LOONGARCH_EXTIOI_H +#define LOONGARCH_EXTIOI_H + +#define LS3A_INTC_IP 8 +#define MAX_CORES LOONGARCH_MAX_VCPUS +#define EXTIOI_IRQS (256) +/* 32 irqs belong to a group */ +#define EXTIOI_IRQS_GROUP_COUNT (256 / 32) +/* map to ipnum per 32 irqs */ +#define EXTIOI_IRQS_NODETYPE_COUNT 16 + +#define APIC_BASE 0x1400 +#define ENABLE_OFFSET 0x1600 +#define IPMAP_OFFSET 0x14c0 +#define COREMAP_OFFSET 0x1c00 + +#define EXTIOI_NODETYPE_START (0x14a0 - APIC_BASE) +#define EXTIOI_NODETYPE_END (0x14c0 - APIC_BASE) +#define EXTIOI_BOUNCE_START (0x1680 - APIC_BASE) +#define EXTIOI_BOUNCE_END (0x16a0 - APIC_BASE) +#define EXTIOI_COREISR_START (0x1800 - APIC_BASE) +#define EXTIOI_COREISR_END (0x1B20 - APIC_BASE) + +#define EXTIOI_ENABLE_END (0x1618 - ENABLE_OFFSET) +#define EXTIOI_IPMAP_END (0x14c8 - IPMAP_OFFSET) +#define EXTIOI_COREMAP_END (0x1d00 - COREMAP_OFFSET) + +#define TYPE_LOONGARCH_EXTIOI "loongarch.extioi" +DECLARE_INSTANCE_CHECKER(struct LoongArchExtIOI, LOONGARCH_EXTIOI, + TYPE_LOONGARCH_EXTIOI) + +typedef struct ext_sw_ipisr { + uint8_t irq[EXTIOI_IRQS]; +} ext_sw_ipisr; + +typedef struct LoongArchExtIOI { + SysBusDevice parent_obj; + /* hardware state */ + uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2]; + uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT]; + uint32_t coreisr[MAX_CORES][EXTIOI_IRQS_GROUP_COUNT]; + + uint8_t enable[EXTIOI_IRQS / 8]; + uint8_t ipmap[8]; + uint8_t coremap[EXTIOI_IRQS]; + /*software state */ + uint8_t sw_ipmap[EXTIOI_IRQS]; + uint8_t sw_coremap[EXTIOI_IRQS]; + ext_sw_ipisr sw_ipisr[MAX_CORES][LS3A_INTC_IP]; + + qemu_irq parent_irq[MAX_CORES][LS3A_INTC_IP]; + qemu_irq irq[EXTIOI_IRQS]; + MemoryRegion mmio_reg32[MAX_CORES]; + MemoryRegion mmio_enable[MAX_CORES]; + MemoryRegion mmio_ipmap[MAX_CORES]; + MemoryRegion mmio_coremap[MAX_CORES]; +} LoongArchExtIOI; + +#endif /* LOONGARCH_EXTIOI_H */