This patch realize PCH-MSI interrupt controller. Signed-off-by: Xiaojuan Yang <yangxiaoj...@loongson.cn> Signed-off-by: Song Gao <gaos...@loongson.cn> --- hw/intc/Kconfig | 5 +++ hw/intc/loongarch_pch_msi.c | 67 +++++++++++++++++++++++++++++ hw/intc/meson.build | 1 + hw/intc/trace-events | 3 ++ hw/loongarch/Kconfig | 1 + include/hw/intc/loongarch_pch_msi.h | 21 +++++++++ 6 files changed, 98 insertions(+) create mode 100644 hw/intc/loongarch_pch_msi.c create mode 100644 include/hw/intc/loongarch_pch_msi.h
diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index 96da13ad1d..dc5f41f5f5 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -80,3 +80,8 @@ config LOONGARCH_IPI config LOONGARCH_PCH_PIC bool select UNIMP + +config LOONGARCH_PCH_MSI + select MSI_NONBROKEN + bool + select UNIMP diff --git a/hw/intc/loongarch_pch_msi.c b/hw/intc/loongarch_pch_msi.c new file mode 100644 index 0000000000..c7777f763b --- /dev/null +++ b/hw/intc/loongarch_pch_msi.c @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * QEMU Loongson 7A1000 msi interrupt controller. + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/sysbus.h" +#include "hw/irq.h" +#include "hw/intc/loongarch_pch_msi.h" +#include "hw/intc/loongarch_pch_pic.h" +#include "hw/pci/msi.h" +#include "hw/misc/unimp.h" +#include "migration/vmstate.h" +#include "trace.h" + +static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0; +} + +static void loongarch_msi_mem_write(void *opaque, hwaddr addr, + uint64_t val, unsigned size) +{ + loongarch_pch_msi *s = LOONGARCH_PCH_MSI(opaque); + int irq_num = val & 0xff; + + trace_loongarch_msi_set_irq(irq_num); + qemu_set_irq(s->pch_msi_irq[irq_num - PCH_PIC_IRQ_NUM], 1); +} + +static const MemoryRegionOps loongarch_pch_msi_ops = { + .read = loongarch_msi_mem_read, + .write = loongarch_msi_mem_write, + .endianness = DEVICE_LITTLE_ENDIAN, +}; + +static void loongarch_pch_msi_init(Object *obj) +{ + loongarch_pch_msi *s = LOONGARCH_PCH_MSI(obj); + SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + int i; + + memory_region_init_io(&s->msi_mmio, obj, &loongarch_pch_msi_ops, + s, TYPE_LOONGARCH_PCH_MSI, 0x8); + sysbus_init_mmio(sbd, &s->msi_mmio); + msi_nonbroken = true; + + for (i = 0; i < PCH_MSI_IRQ_NUM; i++) { + sysbus_init_irq(sbd, &s->pch_msi_irq[i]); + } +} + +static const TypeInfo loongarch_pch_msi_info = { + .name = TYPE_LOONGARCH_PCH_MSI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(loongarch_pch_msi), + .instance_init = loongarch_pch_msi_init, +}; + +static void loongarch_pch_msi_register_types(void) +{ + type_register_static(&loongarch_pch_msi_info); +} + +type_init(loongarch_pch_msi_register_types) diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 33ba63266e..acefe0c5aa 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -59,3 +59,4 @@ specific_ss.add(when: 'CONFIG_GOLDFISH_PIC', if_true: files('goldfish_pic.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_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')) diff --git a/hw/intc/trace-events b/hw/intc/trace-events index 52fedf82be..20da343cfe 100644 --- a/hw/intc/trace-events +++ b/hw/intc/trace-events @@ -255,3 +255,6 @@ loongarch_ipi_write(unsigned size, uint32_t addr, unsigned long val) "size: %u a pch_pic_irq_handler(uint32_t edge, int irq, int level) "edge 0x%02x irq %d level %d" loongarch_pch_pic_read(unsigned size, uint32_t addr, unsigned long val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx64 loongarch_pch_pic_write(unsigned size, uint32_t addr, unsigned long val) "size: %u addr: 0x%"PRIx32 "val: 0x%" PRIx64 + +# loongarch_pch_msi.c +loongarch_msi_set_irq(int irq_num) "set msi irq %d" diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index c2b8046b94..cd38d03a19 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -3,3 +3,4 @@ config LOONGSON3_LS7A select PCI_EXPRESS_7A select LOONGARCH_IPI select LOONGARCH_PCH_PIC + select LOONGARCH_PCH_MSI diff --git a/include/hw/intc/loongarch_pch_msi.h b/include/hw/intc/loongarch_pch_msi.h new file mode 100644 index 0000000000..35297d51d8 --- /dev/null +++ b/include/hw/intc/loongarch_pch_msi.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch 7A1000 I/O interrupt controller definitions + * + * Copyright (C) 2021 Loongson Technology Corporation Limited + */ + +#define TYPE_LOONGARCH_PCH_MSI "loongarch_pch_msi" +DECLARE_INSTANCE_CHECKER(struct loongarch_pch_msi, LOONGARCH_PCH_MSI, + TYPE_LOONGARCH_PCH_MSI) + +/* Msi irq start start from 64 to 255 */ +#define PCH_MSI_IRQ_START 64 +#define PCH_MSI_IRQ_END 255 +#define PCH_MSI_IRQ_NUM 192 + +typedef struct loongarch_pch_msi { + SysBusDevice parent_obj; + qemu_irq pch_msi_irq[PCH_MSI_IRQ_NUM]; + MemoryRegion msi_mmio; +} loongarch_pch_msi; -- 2.27.0