xref: /openbmc/qemu/hw/loongarch/virt.c (revision d01d42ccc9510c039b2e4ec49af164e374eab154)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * QEMU loongson 3a5000 develop board emulation
4  *
5  * Copyright (c) 2021 Loongson Technology Corporation Limited
6  */
7 #include "qemu/osdep.h"
8 #include "qemu/units.h"
9 #include "qemu/datadir.h"
10 #include "qapi/error.h"
11 #include "exec/target_page.h"
12 #include "hw/boards.h"
13 #include "hw/char/serial-mm.h"
14 #include "system/kvm.h"
15 #include "system/tcg.h"
16 #include "system/system.h"
17 #include "system/qtest.h"
18 #include "system/runstate.h"
19 #include "system/reset.h"
20 #include "system/rtc.h"
21 #include "hw/loongarch/virt.h"
22 #include "system/address-spaces.h"
23 #include "hw/irq.h"
24 #include "net/net.h"
25 #include "hw/loader.h"
26 #include "elf.h"
27 #include "hw/intc/loongarch_ipi.h"
28 #include "hw/intc/loongarch_extioi.h"
29 #include "hw/intc/loongarch_pch_pic.h"
30 #include "hw/intc/loongarch_pch_msi.h"
31 #include "hw/pci-host/ls7a.h"
32 #include "hw/pci-host/gpex.h"
33 #include "hw/misc/unimp.h"
34 #include "hw/loongarch/fw_cfg.h"
35 #include "target/loongarch/cpu.h"
36 #include "hw/firmware/smbios.h"
37 #include "qapi/qapi-visit-common.h"
38 #include "hw/acpi/generic_event_device.h"
39 #include "hw/mem/nvdimm.h"
40 #include "hw/platform-bus.h"
41 #include "hw/display/ramfb.h"
42 #include "hw/uefi/var-service-api.h"
43 #include "hw/mem/pc-dimm.h"
44 #include "system/tpm.h"
45 #include "system/block-backend.h"
46 #include "hw/block/flash.h"
47 #include "hw/virtio/virtio-iommu.h"
48 #include "qemu/error-report.h"
49 
virt_get_veiointc(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)50 static void virt_get_veiointc(Object *obj, Visitor *v, const char *name,
51                               void *opaque, Error **errp)
52 {
53     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
54     OnOffAuto veiointc = lvms->veiointc;
55 
56     visit_type_OnOffAuto(v, name, &veiointc, errp);
57 }
58 
virt_set_veiointc(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)59 static void virt_set_veiointc(Object *obj, Visitor *v, const char *name,
60                               void *opaque, Error **errp)
61 {
62     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
63 
64     visit_type_OnOffAuto(v, name, &lvms->veiointc, errp);
65 }
66 
virt_flash_create1(LoongArchVirtMachineState * lvms,const char * name,const char * alias_prop_name)67 static PFlashCFI01 *virt_flash_create1(LoongArchVirtMachineState *lvms,
68                                        const char *name,
69                                        const char *alias_prop_name)
70 {
71     DeviceState *dev = qdev_new(TYPE_PFLASH_CFI01);
72 
73     qdev_prop_set_uint64(dev, "sector-length", VIRT_FLASH_SECTOR_SIZE);
74     qdev_prop_set_uint8(dev, "width", 4);
75     qdev_prop_set_uint8(dev, "device-width", 2);
76     qdev_prop_set_bit(dev, "big-endian", false);
77     qdev_prop_set_uint16(dev, "id0", 0x89);
78     qdev_prop_set_uint16(dev, "id1", 0x18);
79     qdev_prop_set_uint16(dev, "id2", 0x00);
80     qdev_prop_set_uint16(dev, "id3", 0x00);
81     qdev_prop_set_string(dev, "name", name);
82     object_property_add_child(OBJECT(lvms), name, OBJECT(dev));
83     object_property_add_alias(OBJECT(lvms), alias_prop_name,
84                               OBJECT(dev), "drive");
85     return PFLASH_CFI01(dev);
86 }
87 
virt_flash_create(LoongArchVirtMachineState * lvms)88 static void virt_flash_create(LoongArchVirtMachineState *lvms)
89 {
90     lvms->flash[0] = virt_flash_create1(lvms, "virt.flash0", "pflash0");
91     lvms->flash[1] = virt_flash_create1(lvms, "virt.flash1", "pflash1");
92 }
93 
virt_flash_map1(PFlashCFI01 * flash,hwaddr base,hwaddr size,MemoryRegion * sysmem)94 static void virt_flash_map1(PFlashCFI01 *flash,
95                             hwaddr base, hwaddr size,
96                             MemoryRegion *sysmem)
97 {
98     DeviceState *dev = DEVICE(flash);
99     BlockBackend *blk;
100     hwaddr real_size = size;
101 
102     blk = pflash_cfi01_get_blk(flash);
103     if (blk) {
104         real_size = blk_getlength(blk);
105         assert(real_size && real_size <= size);
106     }
107 
108     assert(QEMU_IS_ALIGNED(real_size, VIRT_FLASH_SECTOR_SIZE));
109     assert(real_size / VIRT_FLASH_SECTOR_SIZE <= UINT32_MAX);
110 
111     qdev_prop_set_uint32(dev, "num-blocks", real_size / VIRT_FLASH_SECTOR_SIZE);
112     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
113     memory_region_add_subregion(sysmem, base,
114                                 sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0));
115 }
116 
virt_flash_map(LoongArchVirtMachineState * lvms,MemoryRegion * sysmem)117 static void virt_flash_map(LoongArchVirtMachineState *lvms,
118                            MemoryRegion *sysmem)
119 {
120     PFlashCFI01 *flash0 = lvms->flash[0];
121     PFlashCFI01 *flash1 = lvms->flash[1];
122 
123     virt_flash_map1(flash0, VIRT_FLASH0_BASE, VIRT_FLASH0_SIZE, sysmem);
124     virt_flash_map1(flash1, VIRT_FLASH1_BASE, VIRT_FLASH1_SIZE, sysmem);
125 }
126 
virt_build_smbios(LoongArchVirtMachineState * lvms)127 static void virt_build_smbios(LoongArchVirtMachineState *lvms)
128 {
129     MachineState *ms = MACHINE(lvms);
130     MachineClass *mc = MACHINE_GET_CLASS(lvms);
131     uint8_t *smbios_tables, *smbios_anchor;
132     size_t smbios_tables_len, smbios_anchor_len;
133     const char *product = "QEMU Virtual Machine";
134 
135     if (!lvms->fw_cfg) {
136         return;
137     }
138 
139     if (kvm_enabled()) {
140         product = "KVM Virtual Machine";
141     }
142 
143     smbios_set_defaults("QEMU", product, mc->name);
144 
145     smbios_get_tables(ms, SMBIOS_ENTRY_POINT_TYPE_64,
146                       NULL, 0,
147                       &smbios_tables, &smbios_tables_len,
148                       &smbios_anchor, &smbios_anchor_len, &error_fatal);
149 
150     if (smbios_anchor) {
151         fw_cfg_add_file(lvms->fw_cfg, "etc/smbios/smbios-tables",
152                         smbios_tables, smbios_tables_len);
153         fw_cfg_add_file(lvms->fw_cfg, "etc/smbios/smbios-anchor",
154                         smbios_anchor, smbios_anchor_len);
155     }
156 }
157 
virt_done(Notifier * notifier,void * data)158 static void virt_done(Notifier *notifier, void *data)
159 {
160     LoongArchVirtMachineState *lvms = container_of(notifier,
161                                       LoongArchVirtMachineState, machine_done);
162     virt_build_smbios(lvms);
163     virt_acpi_setup(lvms);
164     virt_fdt_setup(lvms);
165 }
166 
virt_powerdown_req(Notifier * notifier,void * opaque)167 static void virt_powerdown_req(Notifier *notifier, void *opaque)
168 {
169     LoongArchVirtMachineState *s;
170 
171     s = container_of(notifier, LoongArchVirtMachineState, powerdown_notifier);
172     acpi_send_event(s->acpi_ged, ACPI_POWER_DOWN_STATUS);
173 }
174 
memmap_add_entry(MachineState * ms,uint64_t address,uint64_t length,uint32_t type)175 static void memmap_add_entry(MachineState *ms, uint64_t address,
176                              uint64_t length, uint32_t type)
177 {
178     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(ms);
179     struct memmap_entry *memmap_table;
180     unsigned int memmap_entries;
181 
182     memmap_table = lvms->memmap_table;
183     memmap_entries = lvms->memmap_entries;
184     /* Ensure there are no duplicate entries. */
185     for (unsigned i = 0; i < memmap_entries; i++) {
186         assert(memmap_table[i].address != address);
187     }
188 
189     memmap_table = g_renew(struct memmap_entry, memmap_table,
190                            memmap_entries + 1);
191     memmap_table[memmap_entries].address = cpu_to_le64(address);
192     memmap_table[memmap_entries].length = cpu_to_le64(length);
193     memmap_table[memmap_entries].type = cpu_to_le32(type);
194     memmap_table[memmap_entries].reserved = 0;
195     memmap_entries++;
196     lvms->memmap_table = memmap_table;
197     lvms->memmap_entries = memmap_entries;
198 }
199 
create_acpi_ged(DeviceState * pch_pic,LoongArchVirtMachineState * lvms)200 static DeviceState *create_acpi_ged(DeviceState *pch_pic,
201                                     LoongArchVirtMachineState *lvms)
202 {
203     DeviceState *dev;
204     MachineState *ms = MACHINE(lvms);
205     MachineClass *mc = MACHINE_GET_CLASS(lvms);
206     uint32_t event = ACPI_GED_PWR_DOWN_EVT;
207 
208     if (ms->ram_slots) {
209         event |= ACPI_GED_MEM_HOTPLUG_EVT;
210     }
211 
212     if (mc->has_hotpluggable_cpus) {
213         event |= ACPI_GED_CPU_HOTPLUG_EVT;
214     }
215 
216     dev = qdev_new(TYPE_ACPI_GED);
217     qdev_prop_set_uint32(dev, "ged-event", event);
218     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
219 
220     /* ged event */
221     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, VIRT_GED_EVT_ADDR);
222     /* memory hotplug */
223     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, VIRT_GED_MEM_ADDR);
224     /* ged regs used for reset and power down */
225     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR);
226 
227     if (mc->has_hotpluggable_cpus) {
228         sysbus_mmio_map(SYS_BUS_DEVICE(dev), 3, VIRT_GED_CPUHP_ADDR);
229     }
230 
231     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
232                        qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - VIRT_GSI_BASE));
233     return dev;
234 }
235 
create_platform_bus(DeviceState * pch_pic)236 static DeviceState *create_platform_bus(DeviceState *pch_pic)
237 {
238     DeviceState *dev;
239     SysBusDevice *sysbus;
240     int i, irq;
241     MemoryRegion *sysmem = get_system_memory();
242 
243     dev = qdev_new(TYPE_PLATFORM_BUS_DEVICE);
244     dev->id = g_strdup(TYPE_PLATFORM_BUS_DEVICE);
245     qdev_prop_set_uint32(dev, "num_irqs", VIRT_PLATFORM_BUS_NUM_IRQS);
246     qdev_prop_set_uint32(dev, "mmio_size", VIRT_PLATFORM_BUS_SIZE);
247     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
248 
249     sysbus = SYS_BUS_DEVICE(dev);
250     for (i = 0; i < VIRT_PLATFORM_BUS_NUM_IRQS; i++) {
251         irq = VIRT_PLATFORM_BUS_IRQ - VIRT_GSI_BASE + i;
252         sysbus_connect_irq(sysbus, i, qdev_get_gpio_in(pch_pic, irq));
253     }
254 
255     memory_region_add_subregion(sysmem,
256                                 VIRT_PLATFORM_BUS_BASEADDRESS,
257                                 sysbus_mmio_get_region(sysbus, 0));
258     return dev;
259 }
260 
virt_devices_init(DeviceState * pch_pic,LoongArchVirtMachineState * lvms)261 static void virt_devices_init(DeviceState *pch_pic,
262                                    LoongArchVirtMachineState *lvms)
263 {
264     MachineClass *mc = MACHINE_GET_CLASS(lvms);
265     DeviceState *gpex_dev;
266     SysBusDevice *d;
267     PCIBus *pci_bus;
268     MemoryRegion *ecam_alias, *ecam_reg, *pio_alias, *pio_reg;
269     MemoryRegion *mmio_alias, *mmio_reg;
270     int i;
271 
272     gpex_dev = qdev_new(TYPE_GPEX_HOST);
273     d = SYS_BUS_DEVICE(gpex_dev);
274     sysbus_realize_and_unref(d, &error_fatal);
275     pci_bus = PCI_HOST_BRIDGE(gpex_dev)->bus;
276     lvms->pci_bus = pci_bus;
277 
278     /* Map only part size_ecam bytes of ECAM space */
279     ecam_alias = g_new0(MemoryRegion, 1);
280     ecam_reg = sysbus_mmio_get_region(d, 0);
281     memory_region_init_alias(ecam_alias, OBJECT(gpex_dev), "pcie-ecam",
282                              ecam_reg, 0, VIRT_PCI_CFG_SIZE);
283     memory_region_add_subregion(get_system_memory(), VIRT_PCI_CFG_BASE,
284                                 ecam_alias);
285 
286     /* Map PCI mem space */
287     mmio_alias = g_new0(MemoryRegion, 1);
288     mmio_reg = sysbus_mmio_get_region(d, 1);
289     memory_region_init_alias(mmio_alias, OBJECT(gpex_dev), "pcie-mmio",
290                              mmio_reg, VIRT_PCI_MEM_BASE, VIRT_PCI_MEM_SIZE);
291     memory_region_add_subregion(get_system_memory(), VIRT_PCI_MEM_BASE,
292                                 mmio_alias);
293 
294     /* Map PCI IO port space. */
295     pio_alias = g_new0(MemoryRegion, 1);
296     pio_reg = sysbus_mmio_get_region(d, 2);
297     memory_region_init_alias(pio_alias, OBJECT(gpex_dev), "pcie-io", pio_reg,
298                              VIRT_PCI_IO_OFFSET, VIRT_PCI_IO_SIZE);
299     memory_region_add_subregion(get_system_memory(), VIRT_PCI_IO_BASE,
300                                 pio_alias);
301 
302     for (i = 0; i < PCI_NUM_PINS; i++) {
303         sysbus_connect_irq(d, i,
304                            qdev_get_gpio_in(pch_pic, 16 + i));
305         gpex_set_irq_num(GPEX_HOST(gpex_dev), i, 16 + i);
306     }
307 
308     /*
309      * Create uart fdt node in reverse order so that they appear
310      * in the finished device tree lowest address first
311      */
312     for (i = VIRT_UART_COUNT; i-- > 0;) {
313         hwaddr base = VIRT_UART_BASE + i * VIRT_UART_SIZE;
314         int irq = VIRT_UART_IRQ + i - VIRT_GSI_BASE;
315         serial_mm_init(get_system_memory(), base, 0,
316                        qdev_get_gpio_in(pch_pic, irq),
317                        115200, serial_hd(i), DEVICE_LITTLE_ENDIAN);
318     }
319 
320     /* Network init */
321     pci_init_nic_devices(pci_bus, mc->default_nic);
322 
323     /*
324      * There are some invalid guest memory access.
325      * Create some unimplemented devices to emulate this.
326      */
327     create_unimplemented_device("pci-dma-cfg", 0x1001041c, 0x4);
328     sysbus_create_simple("ls7a_rtc", VIRT_RTC_REG_BASE,
329                          qdev_get_gpio_in(pch_pic,
330                          VIRT_RTC_IRQ - VIRT_GSI_BASE));
331 
332     /* acpi ged */
333     lvms->acpi_ged = create_acpi_ged(pch_pic, lvms);
334     /* platform bus */
335     lvms->platform_bus_dev = create_platform_bus(pch_pic);
336 }
337 
virt_cpu_irq_init(LoongArchVirtMachineState * lvms)338 static void virt_cpu_irq_init(LoongArchVirtMachineState *lvms)
339 {
340     int num;
341     MachineState *ms = MACHINE(lvms);
342     MachineClass *mc = MACHINE_GET_CLASS(ms);
343     const CPUArchIdList *possible_cpus;
344     CPUState *cs;
345 
346     /* cpu nodes */
347     possible_cpus = mc->possible_cpu_arch_ids(ms);
348     for (num = 0; num < possible_cpus->len; num++) {
349         cs = possible_cpus->cpus[num].cpu;
350         if (cs == NULL) {
351             continue;
352         }
353 
354         hotplug_handler_plug(HOTPLUG_HANDLER(lvms->ipi), DEVICE(cs),
355                              &error_abort);
356         hotplug_handler_plug(HOTPLUG_HANDLER(lvms->extioi), DEVICE(cs),
357                              &error_abort);
358     }
359 }
360 
virt_irq_init(LoongArchVirtMachineState * lvms)361 static void virt_irq_init(LoongArchVirtMachineState *lvms)
362 {
363     DeviceState *pch_pic, *pch_msi;
364     DeviceState *ipi, *extioi;
365     SysBusDevice *d;
366     int i, start, num;
367 
368     /*
369      * Extended IRQ model.
370      *                                 |
371      * +-----------+     +-------------|--------+     +-----------+
372      * | IPI/Timer | --> | CPUINTC(0-3)|(4-255) | <-- | IPI/Timer |
373      * +-----------+     +-------------|--------+     +-----------+
374      *                         ^       |
375      *                         |
376      *                    +---------+
377      *                    | EIOINTC |
378      *                    +---------+
379      *                     ^       ^
380      *                     |       |
381      *              +---------+ +---------+
382      *              | PCH-PIC | | PCH-MSI |
383      *              +---------+ +---------+
384      *                ^      ^          ^
385      *                |      |          |
386      *         +--------+ +---------+ +---------+
387      *         | UARTs  | | Devices | | Devices |
388      *         +--------+ +---------+ +---------+
389      *
390      * Virt extended IRQ model.
391      *
392      *   +-----+    +---------------+     +-------+
393      *   | IPI |--> | CPUINTC(0-255)| <-- | Timer |
394      *   +-----+    +---------------+     +-------+
395      *                     ^
396      *                     |
397      *               +-----------+
398      *               | V-EIOINTC |
399      *               +-----------+
400      *                ^         ^
401      *                |         |
402      *         +---------+ +---------+
403      *         | PCH-PIC | | PCH-MSI |
404      *         +---------+ +---------+
405      *           ^      ^          ^
406      *           |      |          |
407      *    +--------+ +---------+ +---------+
408      *    | UARTs  | | Devices | | Devices |
409      *    +--------+ +---------+ +---------+
410      */
411 
412     /* Create IPI device */
413     ipi = qdev_new(TYPE_LOONGARCH_IPI);
414     lvms->ipi = ipi;
415     sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal);
416 
417     /* Create EXTIOI device */
418     extioi = qdev_new(TYPE_LOONGARCH_EXTIOI);
419     lvms->extioi = extioi;
420     if (virt_is_veiointc_enabled(lvms)) {
421         qdev_prop_set_bit(extioi, "has-virtualization-extension", true);
422     }
423     sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal);
424 
425     virt_cpu_irq_init(lvms);
426     pch_pic = qdev_new(TYPE_LOONGARCH_PIC);
427     num = VIRT_PCH_PIC_IRQ_NUM;
428     qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num);
429     d = SYS_BUS_DEVICE(pch_pic);
430     sysbus_realize_and_unref(d, &error_fatal);
431 
432     pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI);
433     start   =  num;
434     num = EXTIOI_IRQS - start;
435     qdev_prop_set_uint32(pch_msi, "msi_irq_base", start);
436     qdev_prop_set_uint32(pch_msi, "msi_irq_num", num);
437     d = SYS_BUS_DEVICE(pch_msi);
438     sysbus_realize_and_unref(d, &error_fatal);
439     sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW);
440 
441     if (kvm_irqchip_in_kernel()) {
442         kvm_loongarch_init_irq_routing();
443     } else {
444         /* IPI iocsr memory region */
445         memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX,
446                        sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0));
447         memory_region_add_subregion(&lvms->system_iocsr, MAIL_SEND_ADDR,
448                        sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1));
449 
450         /* EXTIOI iocsr memory region */
451         memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE,
452                     sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0));
453         if (virt_is_veiointc_enabled(lvms)) {
454             memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE,
455                     sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1));
456         }
457 
458         /* PCH_PIC memory region */
459         memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE,
460                     sysbus_mmio_get_region(SYS_BUS_DEVICE(pch_pic), 0));
461 
462         /* Connect pch_pic irqs to extioi */
463         for (i = 0; i < VIRT_PCH_PIC_IRQ_NUM; i++) {
464             qdev_connect_gpio_out(DEVICE(pch_pic), i,
465                                   qdev_get_gpio_in(extioi, i));
466         }
467 
468         for (i = VIRT_PCH_PIC_IRQ_NUM; i < EXTIOI_IRQS; i++) {
469             /* Connect pch_msi irqs to extioi */
470             qdev_connect_gpio_out(DEVICE(pch_msi), i - VIRT_PCH_PIC_IRQ_NUM,
471                                   qdev_get_gpio_in(extioi, i));
472         }
473     }
474     virt_devices_init(pch_pic, lvms);
475 }
476 
virt_firmware_init(LoongArchVirtMachineState * lvms)477 static void virt_firmware_init(LoongArchVirtMachineState *lvms)
478 {
479     char *filename = MACHINE(lvms)->firmware;
480     char *bios_name = NULL;
481     int bios_size, i;
482     BlockBackend *pflash_blk0;
483     MemoryRegion *mr;
484 
485     lvms->bios_loaded = false;
486 
487     /* Map legacy -drive if=pflash to machine properties */
488     for (i = 0; i < ARRAY_SIZE(lvms->flash); i++) {
489         pflash_cfi01_legacy_drive(lvms->flash[i],
490                                   drive_get(IF_PFLASH, 0, i));
491     }
492 
493     virt_flash_map(lvms, get_system_memory());
494 
495     pflash_blk0 = pflash_cfi01_get_blk(lvms->flash[0]);
496 
497     if (pflash_blk0) {
498         if (filename) {
499             error_report("cannot use both '-bios' and '-drive if=pflash'"
500                          "options at once");
501             exit(1);
502         }
503         lvms->bios_loaded = true;
504         return;
505     }
506 
507     if (filename) {
508         bios_name = qemu_find_file(QEMU_FILE_TYPE_BIOS, filename);
509         if (!bios_name) {
510             error_report("Could not find ROM image '%s'", filename);
511             exit(1);
512         }
513 
514         mr = sysbus_mmio_get_region(SYS_BUS_DEVICE(lvms->flash[0]), 0);
515         bios_size = load_image_mr(bios_name, mr);
516         if (bios_size < 0) {
517             error_report("Could not load ROM image '%s'", bios_name);
518             exit(1);
519         }
520         g_free(bios_name);
521         lvms->bios_loaded = true;
522     }
523 }
524 
virt_iocsr_misc_write(void * opaque,hwaddr addr,uint64_t val,unsigned size,MemTxAttrs attrs)525 static MemTxResult virt_iocsr_misc_write(void *opaque, hwaddr addr,
526                                          uint64_t val, unsigned size,
527                                          MemTxAttrs attrs)
528 {
529     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque);
530     uint64_t features;
531 
532     switch (addr) {
533     case MISC_FUNC_REG:
534         if (kvm_irqchip_in_kernel()) {
535             return MEMTX_OK;
536         }
537 
538         if (!virt_is_veiointc_enabled(lvms)) {
539             return MEMTX_OK;
540         }
541 
542         features = address_space_ldl(&lvms->as_iocsr,
543                                      EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG,
544                                      attrs, NULL);
545         if (val & BIT_ULL(IOCSRM_EXTIOI_EN)) {
546             features |= BIT(EXTIOI_ENABLE);
547         }
548         if (val & BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE)) {
549             features |= BIT(EXTIOI_ENABLE_INT_ENCODE);
550         }
551 
552         address_space_stl(&lvms->as_iocsr,
553                           EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG,
554                           features, attrs, NULL);
555         break;
556     default:
557         g_assert_not_reached();
558     }
559 
560     return MEMTX_OK;
561 }
562 
virt_iocsr_misc_read(void * opaque,hwaddr addr,uint64_t * data,unsigned size,MemTxAttrs attrs)563 static MemTxResult virt_iocsr_misc_read(void *opaque, hwaddr addr,
564                                         uint64_t *data,
565                                         unsigned size, MemTxAttrs attrs)
566 {
567     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(opaque);
568     uint64_t ret = 0;
569     int features;
570 
571     switch (addr) {
572     case VERSION_REG:
573         ret = 0x11ULL;
574         break;
575     case FEATURE_REG:
576         ret = BIT(IOCSRF_MSI) | BIT(IOCSRF_EXTIOI) | BIT(IOCSRF_CSRIPI);
577         if (kvm_enabled()) {
578             ret |= BIT(IOCSRF_VM);
579         }
580         break;
581     case VENDOR_REG:
582         ret = 0x6e6f73676e6f6f4cULL; /* "Loongson" */
583         break;
584     case CPUNAME_REG:
585         ret = 0x303030354133ULL;     /* "3A5000" */
586         break;
587     case MISC_FUNC_REG:
588         if (kvm_irqchip_in_kernel()) {
589             return MEMTX_OK;
590         }
591 
592         if (!virt_is_veiointc_enabled(lvms)) {
593             ret |= BIT_ULL(IOCSRM_EXTIOI_EN);
594             break;
595         }
596 
597         features = address_space_ldl(&lvms->as_iocsr,
598                                      EXTIOI_VIRT_BASE + EXTIOI_VIRT_CONFIG,
599                                      attrs, NULL);
600         if (features & BIT(EXTIOI_ENABLE)) {
601             ret |= BIT_ULL(IOCSRM_EXTIOI_EN);
602         }
603         if (features & BIT(EXTIOI_ENABLE_INT_ENCODE)) {
604             ret |= BIT_ULL(IOCSRM_EXTIOI_INT_ENCODE);
605         }
606         break;
607     default:
608         g_assert_not_reached();
609     }
610 
611     *data = ret;
612     return MEMTX_OK;
613 }
614 
615 static const MemoryRegionOps virt_iocsr_misc_ops = {
616     .read_with_attrs  = virt_iocsr_misc_read,
617     .write_with_attrs = virt_iocsr_misc_write,
618     .endianness = DEVICE_LITTLE_ENDIAN,
619     .valid = {
620         .min_access_size = 4,
621         .max_access_size = 8,
622     },
623     .impl = {
624         .min_access_size = 8,
625         .max_access_size = 8,
626     },
627 };
628 
fw_cfg_add_memory(MachineState * ms)629 static void fw_cfg_add_memory(MachineState *ms)
630 {
631     hwaddr base, size, ram_size, gap;
632     int nb_numa_nodes, nodes;
633     NodeInfo *numa_info;
634 
635     ram_size = ms->ram_size;
636     base = VIRT_LOWMEM_BASE;
637     gap = VIRT_LOWMEM_SIZE;
638     nodes = nb_numa_nodes = ms->numa_state->num_nodes;
639     numa_info = ms->numa_state->nodes;
640     if (!nodes) {
641         nodes = 1;
642     }
643 
644     /* add fw_cfg memory map of node0 */
645     if (nb_numa_nodes) {
646         size = numa_info[0].node_mem;
647     } else {
648         size = ram_size;
649     }
650 
651     if (size >= gap) {
652         memmap_add_entry(ms, base, gap, 1);
653         size -= gap;
654         base = VIRT_HIGHMEM_BASE;
655     }
656 
657     if (size) {
658         memmap_add_entry(ms, base, size, 1);
659         base += size;
660     }
661 
662     if (nodes < 2) {
663         return;
664     }
665 
666     /* add fw_cfg memory map of other nodes */
667     if (numa_info[0].node_mem < gap && ram_size > gap) {
668         /*
669          * memory map for the maining nodes splited into two part
670          * lowram:  [base, +(gap - numa_info[0].node_mem))
671          * highram: [VIRT_HIGHMEM_BASE, +(ram_size - gap))
672          */
673         memmap_add_entry(ms, base, gap - numa_info[0].node_mem, 1);
674         size = ram_size - gap;
675         base = VIRT_HIGHMEM_BASE;
676     } else {
677         size = ram_size - numa_info[0].node_mem;
678     }
679 
680     if (size) {
681         memmap_add_entry(ms, base, size, 1);
682     }
683 }
684 
virt_init(MachineState * machine)685 static void virt_init(MachineState *machine)
686 {
687     const char *cpu_model = machine->cpu_type;
688     MemoryRegion *address_space_mem = get_system_memory();
689     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(machine);
690     int i;
691     hwaddr base, size, ram_size = machine->ram_size;
692     MachineClass *mc = MACHINE_GET_CLASS(machine);
693     Object *cpuobj;
694 
695     if (!cpu_model) {
696         cpu_model = LOONGARCH_CPU_TYPE_NAME("la464");
697     }
698 
699     /* Create IOCSR space */
700     memory_region_init_io(&lvms->system_iocsr, OBJECT(machine), NULL,
701                           machine, "iocsr", UINT64_MAX);
702     address_space_init(&lvms->as_iocsr, &lvms->system_iocsr, "IOCSR");
703     memory_region_init_io(&lvms->iocsr_mem, OBJECT(machine),
704                           &virt_iocsr_misc_ops,
705                           machine, "iocsr_misc", 0x428);
706     memory_region_add_subregion(&lvms->system_iocsr, 0, &lvms->iocsr_mem);
707 
708     /* Init CPUs */
709     mc->possible_cpu_arch_ids(machine);
710     for (i = 0; i < machine->smp.cpus; i++) {
711         cpuobj = object_new(machine->cpu_type);
712         if (cpuobj == NULL) {
713             error_report("Fail to create object with type %s ",
714                          machine->cpu_type);
715             exit(EXIT_FAILURE);
716         }
717         qdev_realize_and_unref(DEVICE(cpuobj), NULL, &error_fatal);
718     }
719     fw_cfg_add_memory(machine);
720 
721     /* Node0 memory */
722     size = ram_size;
723     base = VIRT_LOWMEM_BASE;
724     if (size > VIRT_LOWMEM_SIZE) {
725         size = VIRT_LOWMEM_SIZE;
726     }
727 
728     memory_region_init_alias(&lvms->lowmem, NULL, "loongarch.lowram",
729                               machine->ram, base, size);
730     memory_region_add_subregion(address_space_mem, base, &lvms->lowmem);
731     base += size;
732     if (ram_size - size) {
733         base = VIRT_HIGHMEM_BASE;
734         memory_region_init_alias(&lvms->highmem, NULL, "loongarch.highram",
735                 machine->ram, VIRT_LOWMEM_BASE + size, ram_size - size);
736         memory_region_add_subregion(address_space_mem, base, &lvms->highmem);
737         base += ram_size - size;
738     }
739 
740     /* initialize device memory address space */
741     if (machine->ram_size < machine->maxram_size) {
742         ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size;
743 
744         if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) {
745             error_report("unsupported amount of memory slots: %"PRIu64,
746                          machine->ram_slots);
747             exit(EXIT_FAILURE);
748         }
749 
750         if (QEMU_ALIGN_UP(machine->maxram_size,
751                           TARGET_PAGE_SIZE) != machine->maxram_size) {
752             error_report("maximum memory size must by aligned to multiple of "
753                          "%d bytes", TARGET_PAGE_SIZE);
754             exit(EXIT_FAILURE);
755         }
756         machine_memory_devices_init(machine, base, device_mem_size);
757     }
758 
759     /* load the BIOS image. */
760     virt_firmware_init(lvms);
761 
762     /* fw_cfg init */
763     lvms->fw_cfg = virt_fw_cfg_init(ram_size, machine);
764     rom_set_fw(lvms->fw_cfg);
765     if (lvms->fw_cfg != NULL) {
766         fw_cfg_add_file(lvms->fw_cfg, "etc/memmap",
767                         lvms->memmap_table,
768                         sizeof(struct memmap_entry) * lvms->memmap_entries);
769     }
770 
771     /* Initialize the IO interrupt subsystem */
772     virt_irq_init(lvms);
773     lvms->machine_done.notify = virt_done;
774     qemu_add_machine_init_done_notifier(&lvms->machine_done);
775      /* connect powerdown request */
776     lvms->powerdown_notifier.notify = virt_powerdown_req;
777     qemu_register_powerdown_notifier(&lvms->powerdown_notifier);
778 
779     lvms->bootinfo.ram_size = ram_size;
780     loongarch_load_kernel(machine, &lvms->bootinfo);
781 }
782 
virt_get_acpi(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)783 static void virt_get_acpi(Object *obj, Visitor *v, const char *name,
784                           void *opaque, Error **errp)
785 {
786     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
787     OnOffAuto acpi = lvms->acpi;
788 
789     visit_type_OnOffAuto(v, name, &acpi, errp);
790 }
791 
virt_set_acpi(Object * obj,Visitor * v,const char * name,void * opaque,Error ** errp)792 static void virt_set_acpi(Object *obj, Visitor *v, const char *name,
793                                void *opaque, Error **errp)
794 {
795     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
796 
797     visit_type_OnOffAuto(v, name, &lvms->acpi, errp);
798 }
799 
virt_get_oem_id(Object * obj,Error ** errp)800 static char *virt_get_oem_id(Object *obj, Error **errp)
801 {
802     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
803 
804     return g_strdup(lvms->oem_id);
805 }
806 
virt_set_oem_id(Object * obj,const char * value,Error ** errp)807 static void virt_set_oem_id(Object *obj, const char *value, Error **errp)
808 {
809     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
810     size_t len = strlen(value);
811 
812     if (len > 6) {
813         error_setg(errp,
814                    "User specified oem-id value is bigger than 6 bytes in size");
815         return;
816     }
817 
818     strncpy(lvms->oem_id, value, 6);
819 }
820 
virt_get_oem_table_id(Object * obj,Error ** errp)821 static char *virt_get_oem_table_id(Object *obj, Error **errp)
822 {
823     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
824 
825     return g_strdup(lvms->oem_table_id);
826 }
827 
virt_set_oem_table_id(Object * obj,const char * value,Error ** errp)828 static void virt_set_oem_table_id(Object *obj, const char *value,
829                                   Error **errp)
830 {
831     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
832     size_t len = strlen(value);
833 
834     if (len > 8) {
835         error_setg(errp,
836                    "User specified oem-table-id value is bigger than 8 bytes in size");
837         return;
838     }
839     strncpy(lvms->oem_table_id, value, 8);
840 }
841 
virt_initfn(Object * obj)842 static void virt_initfn(Object *obj)
843 {
844     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(obj);
845 
846     if (tcg_enabled()) {
847         lvms->veiointc = ON_OFF_AUTO_OFF;
848     }
849     lvms->acpi = ON_OFF_AUTO_AUTO;
850     lvms->oem_id = g_strndup(ACPI_BUILD_APPNAME6, 6);
851     lvms->oem_table_id = g_strndup(ACPI_BUILD_APPNAME8, 8);
852     virt_flash_create(lvms);
853 }
854 
virt_get_topo_from_index(MachineState * ms,LoongArchCPUTopo * topo,int index)855 static void virt_get_topo_from_index(MachineState *ms,
856                                      LoongArchCPUTopo *topo, int index)
857 {
858     topo->socket_id = index / (ms->smp.cores * ms->smp.threads);
859     topo->core_id = index / ms->smp.threads % ms->smp.cores;
860     topo->thread_id = index % ms->smp.threads;
861 }
862 
topo_align_up(unsigned int count)863 static unsigned int topo_align_up(unsigned int count)
864 {
865     g_assert(count >= 1);
866     count -= 1;
867     return BIT(count ? 32 - clz32(count) : 0);
868 }
869 
870 /*
871  * LoongArch Reference Manual Vol1, Chapter 7.4.12 CPU Identity
872  *  For CPU architecture, bit0 .. bit8 is valid for CPU id, max cpuid is 512
873  *  However for IPI/Eiointc interrupt controller, max supported cpu id for
874  *  irq routingis 256
875  *
876  *  Here max cpu id is 256 for virt machine
877  */
virt_get_arch_id_from_topo(MachineState * ms,LoongArchCPUTopo * topo)878 static int virt_get_arch_id_from_topo(MachineState *ms, LoongArchCPUTopo *topo)
879 {
880     int arch_id, threads, cores, sockets;
881 
882     threads = topo_align_up(ms->smp.threads);
883     cores = topo_align_up(ms->smp.cores);
884     sockets = topo_align_up(ms->smp.sockets);
885     if ((threads * cores * sockets) > 256) {
886         error_report("Exceeding max cpuid 256 with sockets[%d] cores[%d]"
887                      " threads[%d]", ms->smp.sockets, ms->smp.cores,
888                      ms->smp.threads);
889         exit(1);
890     }
891 
892     arch_id = topo->thread_id + topo->core_id * threads;
893     arch_id += topo->socket_id * threads * cores;
894     return arch_id;
895 }
896 
897 /* Find cpu slot in machine->possible_cpus by arch_id */
virt_find_cpu_slot(MachineState * ms,int arch_id)898 static CPUArchId *virt_find_cpu_slot(MachineState *ms, int arch_id)
899 {
900     int n;
901     for (n = 0; n < ms->possible_cpus->len; n++) {
902         if (ms->possible_cpus->cpus[n].arch_id == arch_id) {
903             return &ms->possible_cpus->cpus[n];
904         }
905     }
906 
907     return NULL;
908 }
909 
910 /* Find cpu slot for cold-plut CPU object where cpu is NULL */
virt_find_empty_cpu_slot(MachineState * ms)911 static CPUArchId *virt_find_empty_cpu_slot(MachineState *ms)
912 {
913     int n;
914     for (n = 0; n < ms->possible_cpus->len; n++) {
915         if (ms->possible_cpus->cpus[n].cpu == NULL) {
916             return &ms->possible_cpus->cpus[n];
917         }
918     }
919 
920     return NULL;
921 }
922 
virt_cpu_pre_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)923 static void virt_cpu_pre_plug(HotplugHandler *hotplug_dev,
924                               DeviceState *dev, Error **errp)
925 {
926     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
927     MachineState *ms = MACHINE(OBJECT(hotplug_dev));
928     LoongArchCPU *cpu = LOONGARCH_CPU(dev);
929     CPUState *cs = CPU(dev);
930     CPUArchId *cpu_slot;
931     LoongArchCPUTopo topo;
932     int arch_id;
933 
934     if (lvms->acpi_ged) {
935         if ((cpu->thread_id < 0) || (cpu->thread_id >= ms->smp.threads)) {
936             error_setg(errp,
937                        "Invalid thread-id %u specified, must be in range 1:%u",
938                        cpu->thread_id, ms->smp.threads - 1);
939             return;
940         }
941 
942         if ((cpu->core_id < 0) || (cpu->core_id >= ms->smp.cores)) {
943             error_setg(errp,
944                        "Invalid core-id %u specified, must be in range 1:%u",
945                        cpu->core_id, ms->smp.cores - 1);
946             return;
947         }
948 
949         if ((cpu->socket_id < 0) || (cpu->socket_id >= ms->smp.sockets)) {
950             error_setg(errp,
951                        "Invalid socket-id %u specified, must be in range 1:%u",
952                        cpu->socket_id, ms->smp.sockets - 1);
953             return;
954         }
955 
956         topo.socket_id = cpu->socket_id;
957         topo.core_id = cpu->core_id;
958         topo.thread_id = cpu->thread_id;
959         arch_id =  virt_get_arch_id_from_topo(ms, &topo);
960         cpu_slot = virt_find_cpu_slot(ms, arch_id);
961         if (CPU(cpu_slot->cpu)) {
962             error_setg(errp,
963                        "cpu(id%d=%d:%d:%d) with arch-id %" PRIu64 " exists",
964                        cs->cpu_index, cpu->socket_id, cpu->core_id,
965                        cpu->thread_id, cpu_slot->arch_id);
966             return;
967         }
968     } else {
969         /* For cold-add cpu, find empty cpu slot */
970         cpu_slot = virt_find_empty_cpu_slot(ms);
971         topo.socket_id = cpu_slot->props.socket_id;
972         topo.core_id = cpu_slot->props.core_id;
973         topo.thread_id = cpu_slot->props.thread_id;
974         object_property_set_int(OBJECT(dev), "socket-id", topo.socket_id, NULL);
975         object_property_set_int(OBJECT(dev), "core-id", topo.core_id, NULL);
976         object_property_set_int(OBJECT(dev), "thread-id", topo.thread_id, NULL);
977     }
978 
979     cpu->env.address_space_iocsr = &lvms->as_iocsr;
980     cpu->phy_id = cpu_slot->arch_id;
981     cs->cpu_index = cpu_slot - ms->possible_cpus->cpus;
982     numa_cpu_pre_plug(cpu_slot, dev, errp);
983 }
984 
virt_cpu_unplug_request(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)985 static void virt_cpu_unplug_request(HotplugHandler *hotplug_dev,
986                                     DeviceState *dev, Error **errp)
987 {
988     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
989     LoongArchCPU *cpu = LOONGARCH_CPU(dev);
990     CPUState *cs = CPU(dev);
991 
992     if (cs->cpu_index == 0) {
993         error_setg(errp, "hot-unplug of boot cpu(id%d=%d:%d:%d) not supported",
994                    cs->cpu_index, cpu->socket_id,
995                    cpu->core_id, cpu->thread_id);
996         return;
997     }
998 
999     hotplug_handler_unplug_request(HOTPLUG_HANDLER(lvms->acpi_ged), dev, errp);
1000 }
1001 
virt_cpu_unplug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1002 static void virt_cpu_unplug(HotplugHandler *hotplug_dev,
1003                             DeviceState *dev, Error **errp)
1004 {
1005     CPUArchId *cpu_slot;
1006     LoongArchCPU *cpu = LOONGARCH_CPU(dev);
1007     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1008 
1009     /* Notify ipi and extioi irqchip to remove interrupt routing to CPU */
1010     hotplug_handler_unplug(HOTPLUG_HANDLER(lvms->ipi), dev, &error_abort);
1011     hotplug_handler_unplug(HOTPLUG_HANDLER(lvms->extioi), dev, &error_abort);
1012 
1013     /* Notify acpi ged CPU removed */
1014     hotplug_handler_unplug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, &error_abort);
1015 
1016     cpu_slot = virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id);
1017     cpu_slot->cpu = NULL;
1018 }
1019 
virt_cpu_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1020 static void virt_cpu_plug(HotplugHandler *hotplug_dev,
1021                           DeviceState *dev, Error **errp)
1022 {
1023     CPUArchId *cpu_slot;
1024     LoongArchCPU *cpu = LOONGARCH_CPU(dev);
1025     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1026 
1027     if (lvms->ipi) {
1028         hotplug_handler_plug(HOTPLUG_HANDLER(lvms->ipi), dev, &error_abort);
1029     }
1030 
1031     if (lvms->extioi) {
1032         hotplug_handler_plug(HOTPLUG_HANDLER(lvms->extioi), dev, &error_abort);
1033     }
1034 
1035     if (lvms->acpi_ged) {
1036         hotplug_handler_plug(HOTPLUG_HANDLER(lvms->acpi_ged), dev,
1037                              &error_abort);
1038     }
1039 
1040     cpu_slot = virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id);
1041     cpu_slot->cpu = CPU(dev);
1042 }
1043 
memhp_type_supported(DeviceState * dev)1044 static bool memhp_type_supported(DeviceState *dev)
1045 {
1046     /* we only support pc dimm now */
1047     return object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
1048            !object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
1049 }
1050 
virt_mem_pre_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1051 static void virt_mem_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
1052                                  Error **errp)
1053 {
1054     pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), errp);
1055 }
1056 
virt_device_pre_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1057 static void virt_device_pre_plug(HotplugHandler *hotplug_dev,
1058                                             DeviceState *dev, Error **errp)
1059 {
1060     if (memhp_type_supported(dev)) {
1061         virt_mem_pre_plug(hotplug_dev, dev, errp);
1062     } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) {
1063         virt_cpu_pre_plug(hotplug_dev, dev, errp);
1064     }
1065 }
1066 
virt_mem_unplug_request(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1067 static void virt_mem_unplug_request(HotplugHandler *hotplug_dev,
1068                                      DeviceState *dev, Error **errp)
1069 {
1070     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1071 
1072     /* the acpi ged is always exist */
1073     hotplug_handler_unplug_request(HOTPLUG_HANDLER(lvms->acpi_ged), dev,
1074                                    errp);
1075 }
1076 
virt_device_unplug_request(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1077 static void virt_device_unplug_request(HotplugHandler *hotplug_dev,
1078                                           DeviceState *dev, Error **errp)
1079 {
1080     if (memhp_type_supported(dev)) {
1081         virt_mem_unplug_request(hotplug_dev, dev, errp);
1082     } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) {
1083         virt_cpu_unplug_request(hotplug_dev, dev, errp);
1084     }
1085 }
1086 
virt_mem_unplug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1087 static void virt_mem_unplug(HotplugHandler *hotplug_dev,
1088                              DeviceState *dev, Error **errp)
1089 {
1090     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1091 
1092     hotplug_handler_unplug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, errp);
1093     pc_dimm_unplug(PC_DIMM(dev), MACHINE(lvms));
1094     qdev_unrealize(dev);
1095 }
1096 
virt_device_unplug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1097 static void virt_device_unplug(HotplugHandler *hotplug_dev,
1098                                           DeviceState *dev, Error **errp)
1099 {
1100     if (memhp_type_supported(dev)) {
1101         virt_mem_unplug(hotplug_dev, dev, errp);
1102     } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) {
1103         virt_cpu_unplug(hotplug_dev, dev, errp);
1104     }
1105 }
1106 
virt_mem_plug(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1107 static void virt_mem_plug(HotplugHandler *hotplug_dev,
1108                              DeviceState *dev, Error **errp)
1109 {
1110     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1111 
1112     pc_dimm_plug(PC_DIMM(dev), MACHINE(lvms));
1113     hotplug_handler_plug(HOTPLUG_HANDLER(lvms->acpi_ged),
1114                          dev, &error_abort);
1115 }
1116 
virt_device_plug_cb(HotplugHandler * hotplug_dev,DeviceState * dev,Error ** errp)1117 static void virt_device_plug_cb(HotplugHandler *hotplug_dev,
1118                                         DeviceState *dev, Error **errp)
1119 {
1120     LoongArchVirtMachineState *lvms = LOONGARCH_VIRT_MACHINE(hotplug_dev);
1121     MachineClass *mc = MACHINE_GET_CLASS(lvms);
1122     PlatformBusDevice *pbus;
1123 
1124     if (device_is_dynamic_sysbus(mc, dev)) {
1125         if (lvms->platform_bus_dev) {
1126             pbus = PLATFORM_BUS_DEVICE(lvms->platform_bus_dev);
1127             platform_bus_link_device(pbus, SYS_BUS_DEVICE(dev));
1128         }
1129     } else if (memhp_type_supported(dev)) {
1130         virt_mem_plug(hotplug_dev, dev, errp);
1131     } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) {
1132         virt_cpu_plug(hotplug_dev, dev, errp);
1133     }
1134 }
1135 
virt_get_hotplug_handler(MachineState * machine,DeviceState * dev)1136 static HotplugHandler *virt_get_hotplug_handler(MachineState *machine,
1137                                                 DeviceState *dev)
1138 {
1139     MachineClass *mc = MACHINE_GET_CLASS(machine);
1140 
1141     if (device_is_dynamic_sysbus(mc, dev) ||
1142         object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU) ||
1143         object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) ||
1144         memhp_type_supported(dev)) {
1145         return HOTPLUG_HANDLER(machine);
1146     }
1147     return NULL;
1148 }
1149 
virt_possible_cpu_arch_ids(MachineState * ms)1150 static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms)
1151 {
1152     int n, arch_id;
1153     unsigned int max_cpus = ms->smp.max_cpus;
1154     LoongArchCPUTopo topo;
1155 
1156     if (ms->possible_cpus) {
1157         assert(ms->possible_cpus->len == max_cpus);
1158         return ms->possible_cpus;
1159     }
1160 
1161     ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
1162                                   sizeof(CPUArchId) * max_cpus);
1163     ms->possible_cpus->len = max_cpus;
1164     for (n = 0; n < ms->possible_cpus->len; n++) {
1165         virt_get_topo_from_index(ms, &topo, n);
1166         arch_id = virt_get_arch_id_from_topo(ms, &topo);
1167         ms->possible_cpus->cpus[n].type = ms->cpu_type;
1168         ms->possible_cpus->cpus[n].arch_id = arch_id;
1169         ms->possible_cpus->cpus[n].vcpus_count = 1;
1170         ms->possible_cpus->cpus[n].props.has_socket_id = true;
1171         ms->possible_cpus->cpus[n].props.socket_id = topo.socket_id;
1172         ms->possible_cpus->cpus[n].props.has_core_id = true;
1173         ms->possible_cpus->cpus[n].props.core_id = topo.core_id;
1174         ms->possible_cpus->cpus[n].props.has_thread_id = true;
1175         ms->possible_cpus->cpus[n].props.thread_id = topo.thread_id;
1176     }
1177     return ms->possible_cpus;
1178 }
1179 
virt_cpu_index_to_props(MachineState * ms,unsigned cpu_index)1180 static CpuInstanceProperties virt_cpu_index_to_props(MachineState *ms,
1181                                                      unsigned cpu_index)
1182 {
1183     MachineClass *mc = MACHINE_GET_CLASS(ms);
1184     const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
1185 
1186     assert(cpu_index < possible_cpus->len);
1187     return possible_cpus->cpus[cpu_index].props;
1188 }
1189 
virt_get_default_cpu_node_id(const MachineState * ms,int idx)1190 static int64_t virt_get_default_cpu_node_id(const MachineState *ms, int idx)
1191 {
1192     int64_t socket_id;
1193 
1194     if (ms->numa_state->num_nodes) {
1195         socket_id = ms->possible_cpus->cpus[idx].props.socket_id;
1196         return socket_id % ms->numa_state->num_nodes;
1197     } else {
1198         return 0;
1199     }
1200 }
1201 
virt_class_init(ObjectClass * oc,const void * data)1202 static void virt_class_init(ObjectClass *oc, const void *data)
1203 {
1204     MachineClass *mc = MACHINE_CLASS(oc);
1205     HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
1206 
1207     mc->init = virt_init;
1208     mc->default_cpu_type = LOONGARCH_CPU_TYPE_NAME("la464");
1209     mc->default_ram_id = "loongarch.ram";
1210     mc->desc = "QEMU LoongArch Virtual Machine";
1211     mc->max_cpus = LOONGARCH_MAX_CPUS;
1212     mc->is_default = 1;
1213     mc->default_kernel_irqchip_split = false;
1214     mc->block_default_type = IF_VIRTIO;
1215     mc->default_boot_order = "c";
1216     mc->no_cdrom = 1;
1217     mc->possible_cpu_arch_ids = virt_possible_cpu_arch_ids;
1218     mc->cpu_index_to_instance_props = virt_cpu_index_to_props;
1219     mc->get_default_cpu_node_id = virt_get_default_cpu_node_id;
1220     mc->numa_mem_supported = true;
1221     mc->auto_enable_numa_with_memhp = true;
1222     mc->auto_enable_numa_with_memdev = true;
1223     mc->has_hotpluggable_cpus = true;
1224     mc->get_hotplug_handler = virt_get_hotplug_handler;
1225     mc->default_nic = "virtio-net-pci";
1226     hc->plug = virt_device_plug_cb;
1227     hc->pre_plug = virt_device_pre_plug;
1228     hc->unplug_request = virt_device_unplug_request;
1229     hc->unplug = virt_device_unplug;
1230 
1231     object_class_property_add(oc, "acpi", "OnOffAuto",
1232         virt_get_acpi, virt_set_acpi,
1233         NULL, NULL);
1234     object_class_property_set_description(oc, "acpi",
1235         "Enable ACPI");
1236     object_class_property_add(oc, "v-eiointc", "OnOffAuto",
1237         virt_get_veiointc, virt_set_veiointc,
1238         NULL, NULL);
1239     object_class_property_set_description(oc, "v-eiointc",
1240                             "Enable Virt Extend I/O Interrupt Controller.");
1241     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_RAMFB_DEVICE);
1242     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_UEFI_VARS_SYSBUS);
1243 #ifdef CONFIG_TPM
1244     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
1245 #endif
1246     object_class_property_add_str(oc, "x-oem-id",
1247                                   virt_get_oem_id,
1248                                   virt_set_oem_id);
1249     object_class_property_set_description(oc, "x-oem-id",
1250                                           "Override the default value of field OEMID "
1251                                           "in ACPI table header."
1252                                           "The string may be up to 6 bytes in size");
1253 
1254 
1255     object_class_property_add_str(oc, "x-oem-table-id",
1256                                   virt_get_oem_table_id,
1257                                   virt_set_oem_table_id);
1258     object_class_property_set_description(oc, "x-oem-table-id",
1259                                           "Override the default value of field OEM Table ID "
1260                                           "in ACPI table header."
1261                                           "The string may be up to 8 bytes in size");
1262 }
1263 
1264 static const TypeInfo virt_machine_types[] = {
1265     {
1266         .name           = TYPE_LOONGARCH_VIRT_MACHINE,
1267         .parent         = TYPE_MACHINE,
1268         .instance_size  = sizeof(LoongArchVirtMachineState),
1269         .class_init     = virt_class_init,
1270         .instance_init  = virt_initfn,
1271         .interfaces = (const InterfaceInfo[]) {
1272          { TYPE_HOTPLUG_HANDLER },
1273          { }
1274         },
1275     }
1276 };
1277 
1278 DEFINE_TYPES(virt_machine_types)
1279