* Avoid qemu_get_cpu() and first_cpu, and use properties instead

* Mirror next-cube bios to address 0
 * Instantiate ESP SCSI controller in the next-cube machine
 * Fix URL in the next-cube avocado test
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Merge tag 'm68k-pull-2023-11-02' of https://gitlab.com/huth/qemu into staging

* Avoid qemu_get_cpu() and first_cpu, and use properties instead
* Mirror next-cube bios to address 0
* Instantiate ESP SCSI controller in the next-cube machine
* Fix URL in the next-cube avocado test

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# nSBXNb8y1+qpkA==
# =MOWk
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 02 Nov 2023 17:37:05 HKT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "huth@tuxfamily.org"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'm68k-pull-2023-11-02' of https://gitlab.com/huth/qemu:
  tests/avocado/machine_m68k_nextcube: Fix the download URL for the ROM image
  m68k: Instantiate the ESP SCSI controller for the NeXTcube machine
  hw/m68k/next-cube: Mirror BIOS to address 0
  hw/char/mcf_uart: Have mcf_uart_create() return DeviceState
  hw/m68k/virt: Do not open-code sysbus_create_simple()
  hw/m68k/next-cube: Do not open-code sysbus_create_simple()
  hw/m68k/mcf_intc: Pass CPU using QOM link property
  hw/m68k/mcf_intc: Expose MMIO region via SysBus API
  hw/m68k/mcf5206: Pass CPU using QOM link property
  hw/m68k/irqc: Pass CPU using QOM link property

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

hw/char/mcf_uart.c

@@ -342,7 +342,7 @@ static void mcf_uart_register(void)
 
 type_init(mcf_uart_register)
 
-void *mcf_uart_init(qemu_irq irq, Chardev *chrdrv)
+DeviceState *mcf_uart_create(qemu_irq irq, Chardev *chrdrv)
 {
     DeviceState *dev;
 
@@ -351,16 +351,17 @@ void *mcf_uart_init(qemu_irq irq, Chardev *chrdrv)
         qdev_prop_set_chr(dev, "chardev", chrdrv);
     }
     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
-
     sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, irq);
 
     return dev;
 }
 
-void mcf_uart_mm_init(hwaddr base, qemu_irq irq, Chardev *chrdrv)
+DeviceState *mcf_uart_create_mmap(hwaddr base, qemu_irq irq, Chardev *chrdrv)
 {
     DeviceState *dev;
 
-    dev = mcf_uart_init(irq, chrdrv);
+    dev = mcf_uart_create(irq, chrdrv);
     sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, base);
+
+    return dev;
 }

hw/intc/m68k_irqc.c

@@ -11,6 +11,7 @@
 #include "cpu.h"
 #include "migration/vmstate.h"
 #include "monitor/monitor.h"
+#include "hw/qdev-properties.h"
 #include "hw/nmi.h"
 #include "hw/intc/intc.h"
 #include "hw/intc/m68k_irqc.h"
@@ -35,7 +36,7 @@ static void m68k_irqc_print_info(InterruptStatsProvider *obj, Monitor *mon)
 static void m68k_set_irq(void *opaque, int irq, int level)
 {
     M68KIRQCState *s = opaque;
-    M68kCPU *cpu = M68K_CPU(first_cpu);
+    M68kCPU *cpu = M68K_CPU(s->cpu);
     int i;
 
     if (level) {
@@ -85,12 +86,19 @@ static const VMStateDescription vmstate_m68k_irqc = {
     }
 };
 
+static Property m68k_irqc_properties[] = {
+    DEFINE_PROP_LINK("m68k-cpu", M68KIRQCState, cpu,
+                     TYPE_M68K_CPU, ArchCPU *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void m68k_irqc_class_init(ObjectClass *oc, void *data)
  {
     DeviceClass *dc = DEVICE_CLASS(oc);
     NMIClass *nc = NMI_CLASS(oc);
     InterruptStatsProviderClass *ic = INTERRUPT_STATS_PROVIDER_CLASS(oc);
 
+    device_class_set_props(dc, m68k_irqc_properties);
     nc->nmi_monitor_handler = m68k_nmi;
     dc->reset = m68k_irqc_reset;
     dc->vmsd = &vmstate_m68k_irqc;

hw/m68k/an5206.c

@@ -20,12 +20,14 @@
 #define AN5206_MBAR_ADDR 0x10000000
 #define AN5206_RAMBAR_ADDR 0x20000000
 
-static void mcf5206_init(MemoryRegion *sysmem, uint32_t base)
+static void mcf5206_init(M68kCPU *cpu, MemoryRegion *sysmem, uint32_t base)
 {
     DeviceState *dev;
     SysBusDevice *s;
 
     dev = qdev_new(TYPE_MCF5206_MBAR);
+    object_property_set_link(OBJECT(dev), "m68k-cpu",
+                             OBJECT(cpu), &error_abort);
     s = SYS_BUS_DEVICE(dev);
     sysbus_realize_and_unref(s, &error_fatal);
 
@@ -60,7 +62,7 @@ static void an5206_init(MachineState *machine)
     memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
     memory_region_add_subregion(address_space_mem, AN5206_RAMBAR_ADDR, sram);
 
-    mcf5206_init(address_space_mem, AN5206_MBAR_ADDR);
+    mcf5206_init(cpu, address_space_mem, AN5206_MBAR_ADDR);
 
     /* Load kernel.  */
     if (!kernel_filename) {

hw/m68k/mcf5206.c

@@ -10,6 +10,7 @@
 #include "qemu/error-report.h"
 #include "qemu/log.h"
 #include "cpu.h"
+#include "hw/qdev-properties.h"
 #include "hw/boards.h"
 #include "hw/irq.h"
 #include "hw/m68k/mcf.h"
@@ -167,7 +168,7 @@ typedef struct {
     MemoryRegion iomem;
     qemu_irq *pic;
     m5206_timer_state *timer[2];
-    void *uart[2];
+    DeviceState *uart[2];
     uint8_t scr;
     uint8_t icr[14];
     uint16_t imr; /* 1 == interrupt is masked.  */
@@ -599,15 +600,21 @@ static void mcf5206_mbar_realize(DeviceState *dev, Error **errp)
     s->pic = qemu_allocate_irqs(m5206_mbar_set_irq, s, 14);
     s->timer[0] = m5206_timer_init(s->pic[9]);
     s->timer[1] = m5206_timer_init(s->pic[10]);
-    s->uart[0] = mcf_uart_init(s->pic[12], serial_hd(0));
+    s->uart[0] = mcf_uart_create(s->pic[12], serial_hd(0));
-    s->uart[1] = mcf_uart_init(s->pic[13], serial_hd(1));
+    s->uart[1] = mcf_uart_create(s->pic[13], serial_hd(1));
-    s->cpu = M68K_CPU(qemu_get_cpu(0));
 }
 
+static Property mcf5206_mbar_properties[] = {
+    DEFINE_PROP_LINK("m68k-cpu", m5206_mbar_state, cpu,
+                     TYPE_M68K_CPU, M68kCPU *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void mcf5206_mbar_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
+    device_class_set_props(dc, mcf5206_mbar_properties);
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     dc->desc = "MCF5206 system integration module";
     dc->realize = mcf5206_mbar_realize;

hw/m68k/mcf5208.c

@@ -261,9 +261,9 @@ static void mcf5208evb_init(MachineState *machine)
     /* Internal peripherals.  */
     pic = mcf_intc_init(address_space_mem, 0xfc048000, cpu);
 
-    mcf_uart_mm_init(0xfc060000, pic[26], serial_hd(0));
+    mcf_uart_create_mmap(0xfc060000, pic[26], serial_hd(0));
-    mcf_uart_mm_init(0xfc064000, pic[27], serial_hd(1));
+    mcf_uart_create_mmap(0xfc064000, pic[27], serial_hd(1));
-    mcf_uart_mm_init(0xfc068000, pic[28], serial_hd(2));
+    mcf_uart_create_mmap(0xfc068000, pic[28], serial_hd(2));
 
     mcf5208_sys_init(address_space_mem, pic);
 

hw/m68k/mcf_intc.c

@@ -14,6 +14,7 @@
 #include "hw/irq.h"
 #include "hw/sysbus.h"
 #include "hw/m68k/mcf.h"
+#include "hw/qdev-properties.h"
 #include "qom/object.h"
 
 #define TYPE_MCF_INTC "mcf-intc"
@@ -173,12 +174,20 @@ static void mcf_intc_instance_init(Object *obj)
     mcf_intc_state *s = MCF_INTC(obj);
 
     memory_region_init_io(&s->iomem, obj, &mcf_intc_ops, s, "mcf", 0x100);
+    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem);
 }
 
+static Property mcf_intc_properties[] = {
+    DEFINE_PROP_LINK("m68k-cpu", mcf_intc_state, cpu,
+                     TYPE_M68K_CPU, M68kCPU *),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void mcf_intc_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
+    device_class_set_props(dc, mcf_intc_properties);
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     dc->reset = mcf_intc_reset;
 }
@@ -203,15 +212,13 @@ qemu_irq *mcf_intc_init(MemoryRegion *sysmem,
                         M68kCPU *cpu)
 {
     DeviceState  *dev;
-    mcf_intc_state *s;
 
     dev = qdev_new(TYPE_MCF_INTC);
+    object_property_set_link(OBJECT(dev), "m68k-cpu",
+                             OBJECT(cpu), &error_abort);
     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));
 
-    s = MCF_INTC(dev);
+    return qemu_allocate_irqs(mcf_intc_set_irq, dev, 64);
-    s->cpu = cpu;
-
-    memory_region_add_subregion(sysmem, base, &s->iomem);
-
-    return qemu_allocate_irqs(mcf_intc_set_irq, s, 64);
 }

hw/m68k/next-cube.c

@@ -90,10 +90,13 @@ struct NeXTPC {
 
     uint32_t scr1;
     uint32_t scr2;
-    uint8_t scsi_csr_1;
-    uint8_t scsi_csr_2;
     uint32_t int_mask;
     uint32_t int_status;
+    uint8_t scsi_csr_1;
+    uint8_t scsi_csr_2;
+
+    qemu_irq scsi_reset;
+    qemu_irq scsi_dma;
 
     NextRtc rtc;
 };
@@ -466,7 +469,7 @@ static void scr_writeb(NeXTPC *s, hwaddr addr, uint32_t value)
             DPRINTF("SCSICSR FIFO Flush\n");
             /* will have to add another irq to the esp if this is needed */
             /* esp_puflush_fifo(esp_g); */
-            /* qemu_irq_pulse(s->scsi_dma); */
+            qemu_irq_pulse(s->scsi_dma);
         }
 
         if (value & SCSICSR_ENABLE) {
@@ -486,9 +489,9 @@ static void scr_writeb(NeXTPC *s, hwaddr addr, uint32_t value)
         if (value & SCSICSR_RESET) {
             DPRINTF("SCSICSR Reset\n");
             /* I think this should set DMADIR. CPUDMA and INTMASK to 0 */
-            /* qemu_irq_raise(s->scsi_reset); */
+            qemu_irq_raise(s->scsi_reset);
-            /* s->scsi_csr_1 &= ~(SCSICSR_INTMASK |0x80|0x1); */
+            s->scsi_csr_1 &= ~(SCSICSR_INTMASK | 0x80 | 0x1);
-
+            qemu_irq_lower(s->scsi_reset);
         }
         if (value & SCSICSR_DMADIR) {
             DPRINTF("SCSICSR DMAdir\n");
@@ -496,10 +499,11 @@ static void scr_writeb(NeXTPC *s, hwaddr addr, uint32_t value)
         if (value & SCSICSR_CPUDMA) {
             DPRINTF("SCSICSR CPUDMA\n");
             /* qemu_irq_raise(s->scsi_dma); */
-
             s->int_status |= 0x4000000;
         } else {
+            /* fprintf(stderr,"SCSICSR CPUDMA disabled\n"); */
             s->int_status &= ~(0x4000000);
+            /* qemu_irq_lower(s->scsi_dma); */
         }
         if (value & SCSICSR_INTMASK) {
             DPRINTF("SCSICSR INTMASK\n");
@@ -828,6 +832,103 @@ static void next_irq(void *opaque, int number, int level)
     }
 }
 
+static void nextdma_write(void *opaque, uint8_t *buf, int size, int type)
+{
+    uint32_t base_addr;
+    int irq = 0;
+    uint8_t align = 16;
+    NeXTState *next_state = NEXT_MACHINE(qdev_get_machine());
+
+    if (type == NEXTDMA_ENRX || type == NEXTDMA_ENTX) {
+        align = 32;
+    }
+    /* Most DMA is supposedly 16 byte aligned */
+    if ((size % align) != 0) {
+        size -= size % align;
+        size += align;
+    }
+
+    /*
+     * prom sets the dma start using initbuf while the bootloader uses next
+     * so we check to see if initbuf is 0
+     */
+    if (next_state->dma[type].next_initbuf == 0) {
+        base_addr = next_state->dma[type].next;
+    } else {
+        base_addr = next_state->dma[type].next_initbuf;
+    }
+
+    cpu_physical_memory_write(base_addr, buf, size);
+
+    next_state->dma[type].next_initbuf = 0;
+
+    /* saved limit is checked to calculate packet size by both, rom and netbsd */
+    next_state->dma[type].saved_limit = (next_state->dma[type].next + size);
+    next_state->dma[type].saved_next  = (next_state->dma[type].next);
+
+    /*
+     * 32 bytes under savedbase seems to be some kind of register
+     * of which the purpose is unknown as of yet
+     */
+    /* stl_phys(s->rx_dma.base-32,0xFFFFFFFF); */
+
+    if (!(next_state->dma[type].csr & DMA_SUPDATE)) {
+        next_state->dma[type].next  = next_state->dma[type].start;
+        next_state->dma[type].limit = next_state->dma[type].stop;
+    }
+
+    /* Set dma registers and raise an irq */
+    next_state->dma[type].csr |= DMA_COMPLETE; /* DON'T CHANGE THIS! */
+
+    switch (type) {
+    case NEXTDMA_SCSI:
+        irq = NEXT_SCSI_DMA_I;
+        break;
+    }
+
+    next_irq(opaque, irq, 1);
+    next_irq(opaque, irq, 0);
+}
+
+static void nextscsi_read(void *opaque, uint8_t *buf, int len)
+{
+    DPRINTF("SCSI READ: %x\n", len);
+    abort();
+}
+
+static void nextscsi_write(void *opaque, uint8_t *buf, int size)
+{
+    DPRINTF("SCSI WRITE: %i\n", size);
+    nextdma_write(opaque, buf, size, NEXTDMA_SCSI);
+}
+
+static void next_scsi_init(DeviceState *pcdev, M68kCPU *cpu)
+{
+    struct NeXTPC *next_pc = NEXT_PC(pcdev);
+    DeviceState *dev;
+    SysBusDevice *sysbusdev;
+    SysBusESPState *sysbus_esp;
+    ESPState *esp;
+
+    dev = qdev_new(TYPE_SYSBUS_ESP);
+    sysbus_esp = SYSBUS_ESP(dev);
+    esp = &sysbus_esp->esp;
+    esp->dma_memory_read = nextscsi_read;
+    esp->dma_memory_write = nextscsi_write;
+    esp->dma_opaque = pcdev;
+    sysbus_esp->it_shift = 0;
+    esp->dma_enabled = 1;
+    sysbusdev = SYS_BUS_DEVICE(dev);
+    sysbus_realize_and_unref(sysbusdev, &error_fatal);
+    sysbus_connect_irq(sysbusdev, 0, qdev_get_gpio_in(pcdev, NEXT_SCSI_I));
+    sysbus_mmio_map(sysbusdev, 0, 0x2114000);
+
+    next_pc->scsi_reset = qdev_get_gpio_in(dev, 0);
+    next_pc->scsi_dma = qdev_get_gpio_in(dev, 1);
+
+    scsi_bus_legacy_handle_cmdline(&esp->bus);
+}
+
 static void next_escc_init(DeviceState *pcdev)
 {
     DeviceState *dev;
@@ -945,12 +1046,12 @@ static void next_cube_init(MachineState *machine)
     M68kCPU *cpu;
     CPUM68KState *env;
     MemoryRegion *rom = g_new(MemoryRegion, 1);
+    MemoryRegion *rom2 = g_new(MemoryRegion, 1);
     MemoryRegion *dmamem = g_new(MemoryRegion, 1);
     MemoryRegion *bmapm1 = g_new(MemoryRegion, 1);
     MemoryRegion *bmapm2 = g_new(MemoryRegion, 1);
     MemoryRegion *sysmem = get_system_memory();
     const char *bios_name = machine->firmware ?: ROM_FILE;
-    DeviceState *dev;
     DeviceState *pcdev;
 
     /* Initialize the cpu core */
@@ -974,9 +1075,7 @@ static void next_cube_init(MachineState *machine)
     memory_region_add_subregion(sysmem, 0x04000000, machine->ram);
 
     /* Framebuffer */
-    dev = qdev_new(TYPE_NEXTFB);
+    sysbus_create_simple(TYPE_NEXTFB, 0x0B000000, NULL);
-    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
-    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0x0B000000);
 
     /* MMIO */
     sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 0, 0x02000000);
@@ -993,14 +1092,13 @@ static void next_cube_init(MachineState *machine)
     memory_region_add_subregion(sysmem, 0x820c0000, bmapm2);
 
     /* KBD */
-    dev = qdev_new(TYPE_NEXTKBD);
+    sysbus_create_simple(TYPE_NEXTKBD, 0x0200e000, NULL);
-    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
-    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0x0200e000);
 
     /* Load ROM here */
-    /* still not sure if the rom should also be mapped at 0x0*/
     memory_region_init_rom(rom, NULL, "next.rom", 0x20000, &error_fatal);
     memory_region_add_subregion(sysmem, 0x01000000, rom);
+    memory_region_init_alias(rom2, NULL, "next.rom2", rom, 0x0, 0x20000);
+    memory_region_add_subregion(sysmem, 0x0, rom2);
     if (load_image_targphys(bios_name, 0x01000000, 0x20000) < 8) {
         if (!qtest_enabled()) {
             error_report("Failed to load firmware '%s'.", bios_name);
@@ -1024,6 +1122,7 @@ static void next_cube_init(MachineState *machine)
     /* TODO: */
     /* Network */
     /* SCSI */
+    next_scsi_init(pcdev, cpu);
 
     /* DMA */
     memory_region_init_io(dmamem, NULL, &dma_ops, machine, "next.dma", 0x5000);
@@ -1036,6 +1135,7 @@ static void next_machine_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "NeXT Cube";
     mc->init = next_cube_init;
+    mc->block_default_type = IF_SCSI;
     mc->default_ram_size = RAM_SIZE;
     mc->default_ram_id = "next.ram";
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");

hw/m68k/virt.c

@@ -155,6 +155,8 @@ static void virt_init(MachineState *machine)
     /* IRQ Controller */
 
     irqc_dev = qdev_new(TYPE_M68K_IRQC);
+    object_property_set_link(OBJECT(irqc_dev), "m68k-cpu",
+                             OBJECT(cpu), &error_abort);
     sysbus_realize_and_unref(SYS_BUS_DEVICE(irqc_dev), &error_fatal);
 
     /*
@@ -199,11 +201,8 @@ static void virt_init(MachineState *machine)
     sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_GF_TTY_IRQ_BASE));
 
     /* virt controller */
-    dev = qdev_new(TYPE_VIRT_CTRL);
+    dev = sysbus_create_simple(TYPE_VIRT_CTRL, VIRT_CTRL_MMIO_BASE,
-    sysbus = SYS_BUS_DEVICE(dev);
+                               PIC_GPIO(VIRT_CTRL_IRQ_BASE));
-    sysbus_realize_and_unref(sysbus, &error_fatal);
-    sysbus_mmio_map(sysbus, 0, VIRT_CTRL_MMIO_BASE);
-    sysbus_connect_irq(sysbus, 0, PIC_GPIO(VIRT_CTRL_IRQ_BASE));
 
     /* virtio-mmio */
     io_base = VIRT_VIRTIO_MMIO_BASE;

include/hw/intc/m68k_irqc.h

@@ -33,6 +33,7 @@ typedef struct M68KIRQCState {
     SysBusDevice parent_obj;
 
     uint8_t ipr;
+    ArchCPU *cpu;
 
     /* statistics */
     uint64_t stats_irq_count[M68K_IRQC_LEVEL_NUM];

include/hw/m68k/mcf.h

@@ -10,8 +10,8 @@ uint64_t mcf_uart_read(void *opaque, hwaddr addr,
                        unsigned size);
 void mcf_uart_write(void *opaque, hwaddr addr,
                     uint64_t val, unsigned size);
-void *mcf_uart_init(qemu_irq irq, Chardev *chr);
+DeviceState *mcf_uart_create(qemu_irq irq, Chardev *chr);
-void mcf_uart_mm_init(hwaddr base, qemu_irq irq, Chardev *chr);
+DeviceState *mcf_uart_create_mmap(hwaddr base, qemu_irq irq, Chardev *chr);
 
 /* mcf_intc.c */
 qemu_irq *mcf_intc_init(struct MemoryRegion *sysmem,

tests/avocado/machine_m68k_nextcube.py

@@ -30,8 +30,8 @@ class NextCubeMachine(QemuSystemTest):
     timeout = 15
 
     def check_bootrom_framebuffer(self, screenshot_path):
-        rom_url = ('http://www.nextcomputers.org/NeXTfiles/Software/ROM_Files/'
+        rom_url = ('https://sourceforge.net/p/previous/code/1350/tree/'
-                   '68040_Non-Turbo_Chipset/Rev_2.5_v66.BIN')
+                   'trunk/src/Rev_2.5_v66.BIN?format=raw')
         rom_hash = 'b3534796abae238a0111299fc406a9349f7fee24'
         rom_path = self.fetch_asset(rom_url, asset_hash=rom_hash)