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qemu/hw/loongarch/virt.c
Song Gao 646c39b220
hw/loongarch/virt: Set max 256 cpus support on loongarch virt machine 
Add separate macro EXTIOI_CPUS for extioi interrupt controller, extioi
only supports 4 cpu. And set macro LOONGARCH_MAX_CPUS as 256 so that
loongarch virt machine supports more cpus.

Interrupts from external devices can only be routed cpu 0-3 because
of extioi limits, cpu internal interrupt such as timer/ipi can be
triggered on all cpus.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20230512100421.1867848-3-gaosong@loongson.cn>
2023-05-15 19:09:33 +08:00

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* QEMU loongson 3a5000 develop board emulation
*
* Copyright (c) 2021 Loongson Technology Corporation Limited
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "qemu/datadir.h"
#include "qapi/error.h"
#include "hw/boards.h"
#include "hw/char/serial.h"
#include "sysemu/sysemu.h"
#include "sysemu/qtest.h"
#include "sysemu/runstate.h"
#include "sysemu/reset.h"
#include "sysemu/rtc.h"
#include "hw/loongarch/virt.h"
#include "exec/address-spaces.h"
#include "hw/irq.h"
#include "net/net.h"
#include "hw/loader.h"
#include "elf.h"
#include "hw/intc/loongarch_ipi.h"
#include "hw/intc/loongarch_extioi.h"
#include "hw/intc/loongarch_pch_pic.h"
#include "hw/intc/loongarch_pch_msi.h"
#include "hw/pci-host/ls7a.h"
#include "hw/pci-host/gpex.h"
#include "hw/misc/unimp.h"
#include "hw/loongarch/fw_cfg.h"
#include "target/loongarch/cpu.h"
#include "hw/firmware/smbios.h"
#include "hw/acpi/aml-build.h"
#include "qapi/qapi-visit-common.h"
#include "hw/acpi/generic_event_device.h"
#include "hw/mem/nvdimm.h"
#include "sysemu/device_tree.h"
#include <libfdt.h>
#include "hw/core/sysbus-fdt.h"
#include "hw/platform-bus.h"
#include "hw/display/ramfb.h"
#include "hw/mem/pc-dimm.h"
#include "sysemu/tpm.h"
#include "sysemu/block-backend.h"
#include "hw/block/flash.h"
#include "qemu/error-report.h"
static void virt_flash_create(LoongArchMachineState *lams)
{
DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
qdev_prop_set_uint8(dev, "width", 4);
qdev_prop_set_uint8(dev, "device-width", 2);
qdev_prop_set_bit(dev, "big-endian", false);
qdev_prop_set_uint16(dev, "id0", 0x89);
qdev_prop_set_uint16(dev, "id1", 0x18);
qdev_prop_set_uint16(dev, "id2", 0x00);
qdev_prop_set_uint16(dev, "id3", 0x00);
qdev_prop_set_string(dev, "name", "virt.flash");
object_property_add_child(OBJECT(lams), "virt.flash", OBJECT(dev));
object_property_add_alias(OBJECT(lams), "pflash",
OBJECT(dev), "drive");
lams->flash = PFLASH_CFI01(dev);
}
static void virt_flash_map(LoongArchMachineState *lams,
MemoryRegion *sysmem)
{
PFlashCFI01 *flash = lams->flash;
DeviceState *dev = DEVICE(flash);
hwaddr base = VIRT_FLASH_BASE;
hwaddr size = VIRT_FLASH_SIZE;
assert(QEMU_IS_ALIGNED(size, VIRT_FLASH_SECTOR_SIZE));
assert(size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
qdev_prop_set_uint32(dev, "num-blocks", size / VIRT_FLASH_SECTOR_SIZE);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
memory_region_add_subregion(sysmem, base,
sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
}
static void fdt_add_flash_node(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
char *nodename;
hwaddr flash_base = VIRT_FLASH_BASE;
hwaddr flash_size = VIRT_FLASH_SIZE;
nodename = g_strdup_printf("/flash@%" PRIx64, flash_base);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "cfi-flash");
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
2, flash_base, 2, flash_size);
qemu_fdt_setprop_cell(ms->fdt, nodename, "bank-width", 4);
g_free(nodename);
}
static void fdt_add_rtc_node(LoongArchMachineState *lams)
{
char *nodename;
hwaddr base = VIRT_RTC_REG_BASE;
hwaddr size = VIRT_RTC_LEN;
MachineState *ms = MACHINE(lams);
nodename = g_strdup_printf("/rtc@%" PRIx64, base);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "loongson,ls7a-rtc");
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg", 2, base, 2, size);
g_free(nodename);
}
static void fdt_add_uart_node(LoongArchMachineState *lams)
{
char *nodename;
hwaddr base = VIRT_UART_BASE;
hwaddr size = VIRT_UART_SIZE;
MachineState *ms = MACHINE(lams);
nodename = g_strdup_printf("/serial@%" PRIx64, base);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename, "compatible", "ns16550a");
qemu_fdt_setprop_cells(ms->fdt, nodename, "reg", 0x0, base, 0x0, size);
qemu_fdt_setprop_cell(ms->fdt, nodename, "clock-frequency", 100000000);
qemu_fdt_setprop_string(ms->fdt, "/chosen", "stdout-path", nodename);
g_free(nodename);
}
static void create_fdt(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
ms->fdt = create_device_tree(&lams->fdt_size);
if (!ms->fdt) {
error_report("create_device_tree() failed");
exit(1);
}
/* Header */
qemu_fdt_setprop_string(ms->fdt, "/", "compatible",
"linux,dummy-loongson3");
qemu_fdt_setprop_cell(ms->fdt, "/", "#address-cells", 0x2);
qemu_fdt_setprop_cell(ms->fdt, "/", "#size-cells", 0x2);
qemu_fdt_add_subnode(ms->fdt, "/chosen");
}
static void fdt_add_cpu_nodes(const LoongArchMachineState *lams)
{
int num;
const MachineState *ms = MACHINE(lams);
int smp_cpus = ms->smp.cpus;
qemu_fdt_add_subnode(ms->fdt, "/cpus");
qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#address-cells", 0x1);
qemu_fdt_setprop_cell(ms->fdt, "/cpus", "#size-cells", 0x0);
/* cpu nodes */
for (num = smp_cpus - 1; num >= 0; num--) {
char *nodename = g_strdup_printf("/cpus/cpu@%d", num);
LoongArchCPU *cpu = LOONGARCH_CPU(qemu_get_cpu(num));
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "cpu");
qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
cpu->dtb_compatible);
qemu_fdt_setprop_cell(ms->fdt, nodename, "reg", num);
qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle",
qemu_fdt_alloc_phandle(ms->fdt));
g_free(nodename);
}
/*cpu map */
qemu_fdt_add_subnode(ms->fdt, "/cpus/cpu-map");
for (num = smp_cpus - 1; num >= 0; num--) {
char *cpu_path = g_strdup_printf("/cpus/cpu@%d", num);
char *map_path;
if (ms->smp.threads > 1) {
map_path = g_strdup_printf(
"/cpus/cpu-map/socket%d/core%d/thread%d",
num / (ms->smp.cores * ms->smp.threads),
(num / ms->smp.threads) % ms->smp.cores,
num % ms->smp.threads);
} else {
map_path = g_strdup_printf(
"/cpus/cpu-map/socket%d/core%d",
num / ms->smp.cores,
num % ms->smp.cores);
}
qemu_fdt_add_path(ms->fdt, map_path);
qemu_fdt_setprop_phandle(ms->fdt, map_path, "cpu", cpu_path);
g_free(map_path);
g_free(cpu_path);
}
}
static void fdt_add_fw_cfg_node(const LoongArchMachineState *lams)
{
char *nodename;
hwaddr base = VIRT_FWCFG_BASE;
const MachineState *ms = MACHINE(lams);
nodename = g_strdup_printf("/fw_cfg@%" PRIx64, base);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename,
"compatible", "qemu,fw-cfg-mmio");
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
2, base, 2, 0x18);
qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
g_free(nodename);
}
static void fdt_add_pcie_node(const LoongArchMachineState *lams)
{
char *nodename;
hwaddr base_mmio = VIRT_PCI_MEM_BASE;
hwaddr size_mmio = VIRT_PCI_MEM_SIZE;
hwaddr base_pio = VIRT_PCI_IO_BASE;
hwaddr size_pio = VIRT_PCI_IO_SIZE;
hwaddr base_pcie = VIRT_PCI_CFG_BASE;
hwaddr size_pcie = VIRT_PCI_CFG_SIZE;
hwaddr base = base_pcie;
const MachineState *ms = MACHINE(lams);
nodename = g_strdup_printf("/pcie@%" PRIx64, base);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_string(ms->fdt, nodename,
"compatible", "pci-host-ecam-generic");
qemu_fdt_setprop_string(ms->fdt, nodename, "device_type", "pci");
qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 3);
qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 2);
qemu_fdt_setprop_cell(ms->fdt, nodename, "linux,pci-domain", 0);
qemu_fdt_setprop_cells(ms->fdt, nodename, "bus-range", 0,
PCIE_MMCFG_BUS(VIRT_PCI_CFG_SIZE - 1));
qemu_fdt_setprop(ms->fdt, nodename, "dma-coherent", NULL, 0);
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
2, base_pcie, 2, size_pcie);
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "ranges",
1, FDT_PCI_RANGE_IOPORT, 2, VIRT_PCI_IO_OFFSET,
2, base_pio, 2, size_pio,
1, FDT_PCI_RANGE_MMIO, 2, base_mmio,
2, base_mmio, 2, size_mmio);
g_free(nodename);
}
static void fdt_add_irqchip_node(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
char *nodename;
uint32_t irqchip_phandle;
irqchip_phandle = qemu_fdt_alloc_phandle(ms->fdt);
qemu_fdt_setprop_cell(ms->fdt, "/", "interrupt-parent", irqchip_phandle);
nodename = g_strdup_printf("/intc@%lx", VIRT_IOAPIC_REG_BASE);
qemu_fdt_add_subnode(ms->fdt, nodename);
qemu_fdt_setprop_cell(ms->fdt, nodename, "#interrupt-cells", 3);
qemu_fdt_setprop(ms->fdt, nodename, "interrupt-controller", NULL, 0);
qemu_fdt_setprop_cell(ms->fdt, nodename, "#address-cells", 0x2);
qemu_fdt_setprop_cell(ms->fdt, nodename, "#size-cells", 0x2);
qemu_fdt_setprop(ms->fdt, nodename, "ranges", NULL, 0);
qemu_fdt_setprop_string(ms->fdt, nodename, "compatible",
"loongarch,ls7a");
qemu_fdt_setprop_sized_cells(ms->fdt, nodename, "reg",
2, VIRT_IOAPIC_REG_BASE,
2, PCH_PIC_ROUTE_ENTRY_OFFSET);
qemu_fdt_setprop_cell(ms->fdt, nodename, "phandle", irqchip_phandle);
g_free(nodename);
}
#define PM_BASE 0x10080000
#define PM_SIZE 0x100
#define PM_CTRL 0x10
static void virt_build_smbios(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
MachineClass *mc = MACHINE_GET_CLASS(lams);
uint8_t *smbios_tables, *smbios_anchor;
size_t smbios_tables_len, smbios_anchor_len;
const char *product = "QEMU Virtual Machine";
if (!lams->fw_cfg) {
return;
}
smbios_set_defaults("QEMU", product, mc->name, false,
true, SMBIOS_ENTRY_POINT_TYPE_64);
smbios_get_tables(ms, NULL, 0, &smbios_tables, &smbios_tables_len,
&smbios_anchor, &smbios_anchor_len, &error_fatal);
if (smbios_anchor) {
fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-tables",
smbios_tables, smbios_tables_len);
fw_cfg_add_file(lams->fw_cfg, "etc/smbios/smbios-anchor",
smbios_anchor, smbios_anchor_len);
}
}
static void virt_machine_done(Notifier *notifier, void *data)
{
LoongArchMachineState *lams = container_of(notifier,
LoongArchMachineState, machine_done);
virt_build_smbios(lams);
loongarch_acpi_setup(lams);
}
static void virt_powerdown_req(Notifier *notifier, void *opaque)
{
LoongArchMachineState *s = container_of(notifier,
LoongArchMachineState, powerdown_notifier);
acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
}
struct memmap_entry {
uint64_t address;
uint64_t length;
uint32_t type;
uint32_t reserved;
};
static struct memmap_entry *memmap_table;
static unsigned memmap_entries;
static void memmap_add_entry(uint64_t address, uint64_t length, uint32_t type)
{
/* Ensure there are no duplicate entries. */
for (unsigned i = 0; i < memmap_entries; i++) {
assert(memmap_table[i].address != address);
}
memmap_table = g_renew(struct memmap_entry, memmap_table,
memmap_entries + 1);
memmap_table[memmap_entries].address = cpu_to_le64(address);
memmap_table[memmap_entries].length = cpu_to_le64(length);
memmap_table[memmap_entries].type = cpu_to_le32(type);
memmap_table[memmap_entries].reserved = 0;
memmap_entries++;
}
/*
* This is a placeholder for missing ACPI,
* and will eventually be replaced.
*/
static uint64_t loongarch_virt_pm_read(void *opaque, hwaddr addr, unsigned size)
{
return 0;
}
static void loongarch_virt_pm_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
if (addr != PM_CTRL) {
return;
}
switch (val) {
case 0x00:
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return;
case 0xff:
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
return;
default:
return;
}
}
static const MemoryRegionOps loongarch_virt_pm_ops = {
.read = loongarch_virt_pm_read,
.write = loongarch_virt_pm_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 1,
.max_access_size = 1
}
};
static struct _loaderparams {
uint64_t ram_size;
const char *kernel_filename;
const char *kernel_cmdline;
const char *initrd_filename;
} loaderparams;
static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
{
return addr & MAKE_64BIT_MASK(0, TARGET_PHYS_ADDR_SPACE_BITS);
}
static int64_t load_kernel_info(void)
{
uint64_t kernel_entry, kernel_low, kernel_high;
ssize_t kernel_size;
kernel_size = load_elf(loaderparams.kernel_filename, NULL,
cpu_loongarch_virt_to_phys, NULL,
&kernel_entry, &kernel_low,
&kernel_high, NULL, 0,
EM_LOONGARCH, 1, 0);
if (kernel_size < 0) {
error_report("could not load kernel '%s': %s",
loaderparams.kernel_filename,
load_elf_strerror(kernel_size));
exit(1);
}
return kernel_entry;
}
static DeviceState *create_acpi_ged(DeviceState *pch_pic, LoongArchMachineState *lams)
{
DeviceState *dev;
MachineState *ms = MACHINE(lams);
uint32_t event = ACPI_GED_PWR_DOWN_EVT;
if (ms->ram_slots) {
event |= ACPI_GED_MEM_HOTPLUG_EVT;
}
dev = qdev_new(TYPE_ACPI_GED);
qdev_prop_set_uint32(dev, "ged-event", event);
/* ged event */
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, VIRT_GED_EVT_ADDR);
/* memory hotplug */
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, VIRT_GED_MEM_ADDR);
/* ged regs used for reset and power down */
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR);
sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - VIRT_GSI_BASE));
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
return dev;
}
static DeviceState *create_platform_bus(DeviceState *pch_pic)
{
DeviceState *dev;
SysBusDevice *sysbus;
int i, irq;
MemoryRegion *sysmem = get_system_memory();
dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE);
dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE);
qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS);
qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus = SYS_BUS_DEVICE(dev);
for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) {
irq = VIRT_PLATFORM_BUS_IRQ - VIRT_GSI_BASE + i;
sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq));
}
memory_region_add_subregion(sysmem,
VIRT_PLATFORM_BUS_BASEADDRESS,
sysbus_mmio_get_region(sysbus, 0));
return dev;
}
static void loongarch_devices_init(DeviceState *pch_pic, LoongArchMachineState *lams)
{
DeviceState *gpex_dev;
SysBusDevice *d;
PCIBus *pci_bus;
MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
MemoryRegion *mmio_alias, *mmio_reg, *pm_mem;
int i;
gpex_dev = qdev_new(TYPE_GPEX_HOST);
d = SYS_BUS_DEVICE(gpex_dev);
sysbus_realize_and_unref(d, &error_fatal);
pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus;
lams->pci_bus = pci_bus;
/* Map only part size_ecam bytes of ECAM space */
ecam_alias = g_new0(MemoryRegion, 1);
ecam_reg = sysbus_mmio_get_region(d, 0);
memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam",
ecam_reg, 0, VIRT_PCI_CFG_SIZE);
memory_region_add_subregion(get_system_memory(), VIRT_PCI_CFG_BASE,
ecam_alias);
/* Map PCI mem space */
mmio_alias = g_new0(MemoryRegion, 1);
mmio_reg = sysbus_mmio_get_region(d, 1);
memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio",
mmio_reg, VIRT_PCI_MEM_BASE, VIRT_PCI_MEM_SIZE);
memory_region_add_subregion(get_system_memory(), VIRT_PCI_MEM_BASE,
mmio_alias);
/* Map PCI IO port space. */
pio_alias = g_new0(MemoryRegion, 1);
pio_reg = sysbus_mmio_get_region(d, 2);
memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg,
VIRT_PCI_IO_OFFSET, VIRT_PCI_IO_SIZE);
memory_region_add_subregion(get_system_memory(), VIRT_PCI_IO_BASE,
pio_alias);
for (i = 0; i < GPEX_NUM_IRQS; i++) {
sysbus_connect_irq(d, i,
qdev_get_gpio_in(pch_pic, 16 + i));
gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i);
}
serial_mm_init(get_system_memory(), VIRT_UART_BASE, 0,
qdev_get_gpio_in(pch_pic,
VIRT_UART_IRQ - VIRT_GSI_BASE),
115200, serial_hd(0), DEVICE_LITTLE_ENDIAN);
fdt_add_uart_node(lams);
/* Network init */
for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
if (!nd->model) {
nd->model = g_strdup("virtio");
}
pci_nic_init_nofail(nd, pci_bus, nd->model, NULL);
}
/*
* There are some invalid guest memory access.
* Create some unimplemented devices to emulate this.
*/
create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4);
sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE,
qdev_get_gpio_in(pch_pic,
VIRT_RTC_IRQ - VIRT_GSI_BASE));
fdt_add_rtc_node(lams);
pm_mem = g_new(MemoryRegion, 1);
memory_region_init_io(pm_mem, NULL, &loongarch_virt_pm_ops,
NULL, "loongarch_virt_pm", PM_SIZE);
memory_region_add_subregion(get_system_memory(), PM_BASE, pm_mem);
/* acpi ged */
lams->acpi_ged = create_acpi_ged(pch_pic, lams);
/* platform bus */
lams->platform_bus_dev = create_platform_bus(pch_pic);
}
static void loongarch_irq_init(LoongArchMachineState *lams)
{
MachineState *ms = MACHINE(lams);
DeviceState *pch_pic, *pch_msi, *cpudev;
DeviceState *ipi, *extioi;
SysBusDevice *d;
LoongArchCPU *lacpu;
CPULoongArchState *env;
CPUState *cpu_state;
int cpu, pin, i, start, num;
extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
/*
* The connection of interrupts:
* +-----+ +---------+ +-------+
* | IPI |--> | CPUINTC | <-- | Timer |
* +-----+ +---------+ +-------+
* ^
* |
* +---------+
* | EIOINTC |
* +---------+
* ^ ^
* | |
* +---------+ +---------+
* | PCH-PIC | | PCH-MSI |
* +---------+ +---------+
* ^ ^ ^
* | | |
* +--------+ +---------+ +---------+
* | UARTs | | Devices | | Devices |
* +--------+ +---------+ +---------+
*/
for (cpu = 0; cpu < ms->smp.cpus; cpu++) {
cpu_state = qemu_get_cpu(cpu);
cpudev = DEVICE(cpu_state);
lacpu = LOONGARCH_CPU(cpu_state);
env = &(lacpu->env);
ipi = qdev_new(TYPE_LOONGARCH_IPI);
sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
/* connect ipi irq to cpu irq */
qdev_connect_gpio_out(ipi, 0, qdev_get_gpio_in(cpudev, IRQ_IPI));
/* IPI iocsr memory region */
memory_region_add_subregion(&env->system_iocsr, SMP_IPI_MAILBOX,
sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
0));
memory_region_add_subregion(&env->system_iocsr, MAIL_SEND_ADDR,
sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi),
1));
/*
* extioi iocsr memory region
* only one extioi is added on loongarch virt machine
* external device interrupt can only be routed to cpu 0-3
*/
if (cpu < EXTIOI_CPUS)
memory_region_add_subregion(&env->system_iocsr, APIC_BASE,
sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi),
cpu));
}
/*
* connect ext irq to the cpu irq
* cpu_pin[9:2] <= intc_pin[7:0]
*/
for (cpu = 0; cpu < MIN(ms->smp.cpus, EXTIOI_CPUS); cpu++) {
cpudev = DEVICE(qemu_get_cpu(cpu));
for (pin = 0; pin < LS3A_INTC_IP; pin++) {
qdev_connect_gpio_out(extioi, (cpu * 8 + pin),
qdev_get_gpio_in(cpudev, pin + 2));
}
}
pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC);
num = VIRT_PCH_PIC_IRQ_NUM;
qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num);
d = SYS_BUS_DEVICE(pch_pic);
sysbus_realize_and_unref(d, &error_fatal);
memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE,
sysbus_mmio_get_region(d, 0));
memory_region_add_subregion(get_system_memory(),
VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET,
sysbus_mmio_get_region(d, 1));
memory_region_add_subregion(get_system_memory(),
VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO,
sysbus_mmio_get_region(d, 2));
/* Connect pch_pic irqs to extioi */
for (int i = 0; i < num; i++) {
qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i));
}
pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI);
start = num;
num = EXTIOI_IRQS - start;
qdev_prop_set_uint32(pch_msi, "msi_irq_base", start);
qdev_prop_set_uint32(pch_msi, "msi_irq_num", num);
d = SYS_BUS_DEVICE(pch_msi);
sysbus_realize_and_unref(d, &error_fatal);
sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW);
for (i = 0; i < num; i++) {
/* Connect pch_msi irqs to extioi */
qdev_connect_gpio_out(DEVICE(d), i,
qdev_get_gpio_in(extioi, i + start));
}
loongarch_devices_init(pch_pic, lams);
}
static void loongarch_firmware_init(LoongArchMachineState *lams)
{
char *filename = MACHINE(lams)->firmware;
char *bios_name = NULL;
int bios_size;
lams->bios_loaded = false;
virt_flash_map(lams, get_system_memory());
if (filename) {
bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
if (!bios_name) {
error_report("Could not find ROM image '%s'", filename);
exit(1);
}
bios_size = load_image_targphys(bios_name, VIRT_BIOS_BASE, VIRT_BIOS_SIZE);
if (bios_size < 0) {
error_report("Could not load ROM image '%s'", bios_name);
exit(1);
}
g_free(bios_name);
memory_region_init_ram(&lams->bios, NULL, "loongarch.bios",
VIRT_BIOS_SIZE, &error_fatal);
memory_region_set_readonly(&lams->bios, true);
memory_region_add_subregion(get_system_memory(), VIRT_BIOS_BASE, &lams->bios);
lams->bios_loaded = true;
}
}
static void reset_load_elf(void *opaque)
{
LoongArchCPU *cpu = opaque;
CPULoongArchState *env = &cpu->env;
cpu_reset(CPU(cpu));
if (env->load_elf) {
cpu_set_pc(CPU(cpu), env->elf_address);
}
}
static void fw_cfg_add_kernel_info(FWCfgState *fw_cfg)
{
/*
* Expose the kernel, the command line, and the initrd in fw_cfg.
* We don't process them here at all, it's all left to the
* firmware.
*/
load_image_to_fw_cfg(fw_cfg,
FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA,
loaderparams.kernel_filename,
false);
if (loaderparams.initrd_filename) {
load_image_to_fw_cfg(fw_cfg,
FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA,
loaderparams.initrd_filename, false);
}
if (loaderparams.kernel_cmdline) {
fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
strlen(loaderparams.kernel_cmdline) + 1);
fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA,
loaderparams.kernel_cmdline);
}
}
static void loongarch_firmware_boot(LoongArchMachineState *lams)
{
fw_cfg_add_kernel_info(lams->fw_cfg);
}
static void loongarch_direct_kernel_boot(LoongArchMachineState *lams)
{
MachineState *machine = MACHINE(lams);
int64_t kernel_addr = 0;
LoongArchCPU *lacpu;
int i;
kernel_addr = load_kernel_info();
if (!machine->firmware) {
for (i = 0; i < machine->smp.cpus; i++) {
lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
lacpu->env.load_elf = true;
lacpu->env.elf_address = kernel_addr;
}
}
}
static void loongarch_init(MachineState *machine)
{
LoongArchCPU *lacpu;
const char *cpu_model = machine->cpu_type;
ram_addr_t offset = 0;
ram_addr_t ram_size = machine->ram_size;
uint64_t highram_size = 0;
MemoryRegion *address_space_mem = get_system_memory();
LoongArchMachineState *lams = LOONGARCH_MACHINE(machine);
int i;
hwaddr fdt_base;
if (!cpu_model) {
cpu_model = LOONGARCH_CPU_TYPE_NAME("la464");
}
if (!strstr(cpu_model, "la464")) {
error_report("LoongArch/TCG needs cpu type la464");
exit(1);
}
if (ram_size < 1 * GiB) {
error_report("ram_size must be greater than 1G.");
exit(1);
}
create_fdt(lams);
/* Init CPUs */
for (i = 0; i < machine->smp.cpus; i++) {
cpu_create(machine->cpu_type);
}
fdt_add_cpu_nodes(lams);
/* Add memory region */
memory_region_init_alias(&lams->lowmem, NULL, "loongarch.lowram",
machine->ram, 0, 256 * MiB);
memory_region_add_subregion(address_space_mem, offset, &lams->lowmem);
offset += 256 * MiB;
memmap_add_entry(0, 256 * MiB, 1);
highram_size = ram_size - 256 * MiB;
memory_region_init_alias(&lams->highmem, NULL, "loongarch.highmem",
machine->ram, offset, highram_size);
memory_region_add_subregion(address_space_mem, 0x90000000, &lams->highmem);
memmap_add_entry(0x90000000, highram_size, 1);
/* initialize device memory address space */
if (machine->ram_size < machine->maxram_size) {
machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size;
if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) {
error_report("unsupported amount of memory slots: %"PRIu64,
machine->ram_slots);
exit(EXIT_FAILURE);
}
if (QEMU_ALIGN_UP(machine->maxram_size,
TARGET_PAGE_SIZE) != machine->maxram_size) {
error_report("maximum memory size must by aligned to multiple of "
"%d bytes", TARGET_PAGE_SIZE);
exit(EXIT_FAILURE);
}
/* device memory base is the top of high memory address. */
machine->device_memory->base = 0x90000000 + highram_size;
machine->device_memory->base =
ROUND_UP(machine->device_memory->base, 1 * GiB);
memory_region_init(&machine->device_memory->mr, OBJECT(lams),
"device-memory", device_mem_size);
memory_region_add_subregion(address_space_mem, machine->device_memory->base,
&machine->device_memory->mr);
}
/* Add isa io region */
memory_region_init_alias(&lams->isa_io, NULL, "isa-io",
get_system_io(), 0, VIRT_ISA_IO_SIZE);
memory_region_add_subregion(address_space_mem, VIRT_ISA_IO_BASE,
&lams->isa_io);
/* load the BIOS image. */
loongarch_firmware_init(lams);
/* fw_cfg init */
lams->fw_cfg = loongarch_fw_cfg_init(ram_size, machine);
rom_set_fw(lams->fw_cfg);
if (lams->fw_cfg != NULL) {
fw_cfg_add_file(lams->fw_cfg, "etc/memmap",
memmap_table,
sizeof(struct memmap_entry) * (memmap_entries));
}
fdt_add_fw_cfg_node(lams);
loaderparams.ram_size = ram_size;
loaderparams.kernel_filename = machine->kernel_filename;
loaderparams.kernel_cmdline = machine->kernel_cmdline;
loaderparams.initrd_filename = machine->initrd_filename;
/* load the kernel. */
if (loaderparams.kernel_filename) {
if (lams->bios_loaded) {
loongarch_firmware_boot(lams);
} else {
loongarch_direct_kernel_boot(lams);
}
}
fdt_add_flash_node(lams);
/* register reset function */
for (i = 0; i < machine->smp.cpus; i++) {
lacpu = LOONGARCH_CPU(qemu_get_cpu(i));
qemu_register_reset(reset_load_elf, lacpu);
}
/* Initialize the IO interrupt subsystem */
loongarch_irq_init(lams);
fdt_add_irqchip_node(lams);
platform_bus_add_all_fdt_nodes(machine->fdt, "/intc",
VIRT_PLATFORM_BUS_BASEADDRESS,
VIRT_PLATFORM_BUS_SIZE,
VIRT_PLATFORM_BUS_IRQ);
lams->machine_done.notify = virt_machine_done;
qemu_add_machine_init_done_notifier(&lams->machine_done);
/* connect powerdown request */
lams->powerdown_notifier.notify = virt_powerdown_req;
qemu_register_powerdown_notifier(&lams->powerdown_notifier);
fdt_add_pcie_node(lams);
/*
* Since lowmem region starts from 0 and Linux kernel legacy start address
* at 2 MiB, FDT base address is located at 1 MiB to avoid NULL pointer
* access. FDT size limit with 1 MiB.
* Put the FDT into the memory map as a ROM image: this will ensure
* the FDT is copied again upon reset, even if addr points into RAM.
*/
fdt_base = 1 * MiB;
qemu_fdt_dumpdtb(machine->fdt, lams->fdt_size);
rom_add_blob_fixed("fdt", machine->fdt, lams->fdt_size, fdt_base);
}
bool loongarch_is_acpi_enabled(LoongArchMachineState *lams)
{
if (lams->acpi == ON_OFF_AUTO_OFF) {
return false;
}
return true;
}
static void loongarch_get_acpi(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(obj);
OnOffAuto acpi = lams->acpi;
visit_type_OnOffAuto(v, name, &acpi, errp);
}
static void loongarch_set_acpi(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(obj);
visit_type_OnOffAuto(v, name, &lams->acpi, errp);
}
static void loongarch_machine_initfn(Object *obj)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(obj);
lams->acpi = ON_OFF_AUTO_AUTO;
lams->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
lams->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
virt_flash_create(lams);
}
static bool memhp_type_supported(DeviceState *dev)
{
/* we only support pc dimm now */
return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
!object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
}
static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp);
}
static void virt_machine_device_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (memhp_type_supported(dev)) {
virt_mem_pre_plug(hotplug_dev, dev, errp);
}
}
static void virt_mem_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev);
/* the acpi ged is always exist */
hotplug_handler_unplug_request(HOTPLUG_HANDLER(lams->acpi_ged), dev,
errp);
}
static void virt_machine_device_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (memhp_type_supported(dev)) {
virt_mem_unplug_request(hotplug_dev, dev, errp);
}
}
static void virt_mem_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev);
hotplug_handler_unplug(HOTPLUG_HANDLER(lams->acpi_ged), dev, errp);
pc_dimm_unplug(PC_DIMM(dev), MACHINE(lams));
qdev_unrealize(dev);
}
static void virt_machine_device_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (memhp_type_supported(dev)) {
virt_mem_unplug(hotplug_dev, dev, errp);
}
}
static void virt_mem_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev);
pc_dimm_plug(PC_DIMM(dev), MACHINE(lams));
hotplug_handler_plug(HOTPLUG_HANDLER(lams->acpi_ged),
dev, &error_abort);
}
static void loongarch_machine_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
LoongArchMachineState *lams = LOONGARCH_MACHINE(hotplug_dev);
MachineClass *mc = MACHINE_GET_CLASS(lams);
if (device_is_dynamic_sysbus(mc, dev)) {
if (lams->platform_bus_dev) {
platform_bus_link_device(PLATFORM_BUS_DEVICE(lams->platform_bus_dev),
SYS_BUS_DEVICE(dev));
}
} else if (memhp_type_supported(dev)) {
virt_mem_plug(hotplug_dev, dev, errp);
}
}
static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
if (device_is_dynamic_sysbus(mc, dev) ||
memhp_type_supported(dev)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
}
static void loongarch_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
mc->desc = "Loongson-3A5000 LS7A1000 machine";
mc->init = loongarch_init;
mc->default_ram_size = 1 * GiB;
mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464");
mc->default_ram_id = "loongarch.ram";
mc->max_cpus = LOONGARCH_MAX_CPUS;
mc->is_default = 1;
mc->default_kernel_irqchip_split = false;
mc->block_default_type = IF_VIRTIO;
mc->default_boot_order = "c";
mc->no_cdrom = 1;
mc->get_hotplug_handler = virt_machine_get_hotplug_handler;
hc->plug = loongarch_machine_device_plug_cb;
hc->pre_plug = virt_machine_device_pre_plug;
hc->unplug_request = virt_machine_device_unplug_request;
hc->unplug = virt_machine_device_unplug;
object_class_property_add(oc, "acpi", "OnOffAuto",
loongarch_get_acpi, loongarch_set_acpi,
NULL, NULL);
object_class_property_set_description(oc, "acpi",
"Enable ACPI");
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
#ifdef CONFIG_TPM
machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
#endif
}
static const TypeInfo loongarch_machine_types[] = {
{
.name = TYPE_LOONGARCH_MACHINE,
.parent = TYPE_MACHINE,
.instance_size = sizeof(LoongArchMachineState),
.class_init = loongarch_class_init,
.instance_init = loongarch_machine_initfn,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
},
}
};
DEFINE_TYPES(loongarch_machine_types)
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