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hw/mips/loongson3_virt: Wire up loongson_ipi device

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Wire up loongson_ipi device for loongson3_virt machine, so we
can have SMP support for TCG backend as well.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Acked-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240605-loongson3-ipi-v3-3-ddd2c0e03fa3@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Jiaxun Yang 2024-05-08 14:06:50 +01:00 committed by Philippe Mathieu-Daudé
parent 03ca348b6b
commit c3425158d6
4 changed files with 41 additions and 4 deletions
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1
hw/mips/Kconfig
View file

@ -67,6 +67,7 @@ config LOONGSON3V
imply USB_OHCI_PCI
select SERIAL
select GOLDFISH_RTC
select LOONGSON_IPI
select LOONGSON_LIOINTC
select PCI_EXPRESS_GENERIC_BRIDGE
select MSI_NONBROKEN

2
hw/mips/loongson3_bootp.c
View file

@ -25,8 +25,6 @@
#include "hw/boards.h"
#include "hw/mips/loongson3_bootp.h"
#define LOONGSON3_CORE_PER_NODE 4
static void init_cpu_info(void *g_cpuinfo, uint64_t cpu_freq)
{
struct efi_cpuinfo_loongson *c = g_cpuinfo;

3
hw/mips/loongson3_bootp.h
View file

@ -200,6 +200,8 @@ struct boot_params {
struct efi_reset_system_t reset_system;
};
#define LOONGSON3_CORE_PER_NODE 4
/* Overall MMIO & Memory layout */
enum {
VIRT_LOWMEM,
@ -211,6 +213,7 @@ enum {
VIRT_BIOS_ROM,
VIRT_UART,
VIRT_LIOINTC,
VIRT_IPI,
VIRT_PCIE_MMIO,
VIRT_HIGHMEM
};

39
hw/mips/loongson3_virt.c
View file

@ -36,6 +36,7 @@
#include "hw/mips/loongson3_bootp.h"
#include "hw/misc/unimp.h"
#include "hw/intc/i8259.h"
#include "hw/intc/loongson_ipi.h"
#include "hw/loader.h"
#include "hw/isa/superio.h"
#include "hw/pci/msi.h"
@ -74,6 +75,7 @@ const MemMapEntry virt_memmap[] = {
[VIRT_PCIE_ECAM] = { 0x1a000000, 0x2000000 },
[VIRT_BIOS_ROM] = { 0x1fc00000, 0x200000 },
[VIRT_UART] = { 0x1fe001e0, 0x8 },
[VIRT_IPI] = { 0x3ff01000, 0x400 },
[VIRT_LIOINTC] = { 0x3ff01400, 0x64 },
[VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 },
[VIRT_HIGHMEM] = { 0x80000000, 0x0 }, /* Variable */
@ -485,6 +487,7 @@ static void mips_loongson3_virt_init(MachineState *machine)
Clock *cpuclk;
CPUMIPSState *env;
DeviceState *liointc;
DeviceState *ipi = NULL;
char *filename;
const char *kernel_cmdline = machine->kernel_cmdline;
const char *kernel_filename = machine->kernel_filename;
@ -494,6 +497,7 @@ static void mips_loongson3_virt_init(MachineState *machine)
MemoryRegion *ram = g_new(MemoryRegion, 1);
MemoryRegion *bios = g_new(MemoryRegion, 1);
MemoryRegion *iomem = g_new(MemoryRegion, 1);
MemoryRegion *iocsr = g_new(MemoryRegion, 1);
/* TODO: TCG will support all CPU types */
if (!kvm_enabled()) {
@ -527,6 +531,19 @@ static void mips_loongson3_virt_init(MachineState *machine)
create_unimplemented_device("mmio fallback 0", 0x10000000, 256 * MiB);
create_unimplemented_device("mmio fallback 1", 0x30000000, 256 * MiB);
memory_region_init(iocsr, OBJECT(machine), "loongson3.iocsr", UINT32_MAX);
/* IPI controller is in kernel for KVM */
if (!kvm_enabled()) {
ipi = qdev_new(TYPE_LOONGSON_IPI);
qdev_prop_set_uint32(ipi, "num-cpu", machine->smp.cpus);
sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
memory_region_add_subregion(iocsr, SMP_IPI_MAILBOX,
sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0));
memory_region_add_subregion(iocsr, MAIL_SEND_ADDR,
sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
}
liointc = qdev_new("loongson.liointc");
sysbus_realize_and_unref(SYS_BUS_DEVICE(liointc), &error_fatal);
@ -543,6 +560,8 @@ static void mips_loongson3_virt_init(MachineState *machine)
clock_set_hz(cpuclk, DEF_LOONGSON3_FREQ);
for (i = 0; i < machine->smp.cpus; i++) {
int node = i / LOONGSON3_CORE_PER_NODE;
int core = i % LOONGSON3_CORE_PER_NODE;
int ip;
/* init CPUs */
@ -553,12 +572,28 @@ static void mips_loongson3_virt_init(MachineState *machine)
cpu_mips_clock_init(cpu);
qemu_register_reset(main_cpu_reset, cpu);
if (i >= 4) {
if (ipi) {
hwaddr base = ((hwaddr)node << 44) + virt_memmap[VIRT_IPI].base;
base += core * 0x100;
qdev_connect_gpio_out(ipi, i, cpu->env.irq[6]);
sysbus_mmio_map(SYS_BUS_DEVICE(ipi), i + 2, base);
}
if (ase_lcsr_available(&MIPS_CPU(cpu)->env)) {
MemoryRegion *core_iocsr = g_new(MemoryRegion, 1);
g_autofree char *name = g_strdup_printf("core%d_iocsr", i);
memory_region_init_alias(core_iocsr, OBJECT(cpu), name,
iocsr, 0, UINT32_MAX);
memory_region_add_subregion(&MIPS_CPU(cpu)->env.iocsr.mr,
0, core_iocsr);
}
if (node > 0) {
continue; /* Only node-0 can be connected to LIOINTC */
}
for (ip = 0; ip < 4 ; ip++) {
int pin = i * 4 + ip;
int pin = core * LOONGSON3_CORE_PER_NODE + ip;
sysbus_connect_irq(SYS_BUS_DEVICE(liointc),
pin, cpu->env.irq[ip + 2]);
}