Merge tag 'pull-request-2024-12-29' of https://gitlab.com/huth/qemu into staging

* Rework "next-cube" to bring it up-to-date with current coding standards/APIs
* Remove overlapping memory regions of the "next-cube" machine
* Encapsulate the next-cube SCSI related code into a separate device
* QOM-ify the next-rtc device
* Declare m68k devices as big endian instead of native endian
* Disable the CD-ROM drive for the next-cube machine

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# 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 'pull-request-2024-12-29' of https://gitlab.com/huth/qemu: (35 commits)
  next-cube: add my copyright to the top of the file
  next-cube: rename old_scr2 and scr2_2 in next_scr2_rtc_update()
  next-cube: move next_rtc_cmd_is_write() and next_rtc_data_in_irq() functions
  next-cube: add rtc-power-out named gpio to trigger the NEXT_PWR_I interrupt
  next-cube: add rtc-cmd-reset named gpio to reset the rtc state machine
  next-cube: use named gpio output for next-rtc data
  next-cube: move rtc-data-in gpio from next-pc to next-rtc device
  next-cube: move reset of next-rtc fields from next-pc to next-rtc
  next-cube: QOMify NeXTRTC
  next-cube: don't use rtc phase value of -1
  next-cube: use named gpio to read RTC data bit in scr2
  next-cube: use named gpio to set RTC data bit in scr2
  next-cube: always use retval to return rtc read values
  next-cube: separate rtc read and write shift logic
  next-cube: use qemu_irq to drive int_status in next_scr2_rtc_update()
  next-cube: rename typedef struct NextRtc to NeXTRTC
  next-cube: convert next-pc device to use Resettable interface
  next-cube: rearrange NeXTState declarations to improve readability
  next-cube: remove unused next.scr memory region
  next-cube: add empty slots for unknown accesses to next.scr memory region
  ...

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

hw/m68k/Kconfig

@@ -18,6 +18,7 @@ config NEXTCUBE
     depends on M68K
     select FRAMEBUFFER
     select ESCC
+    select EMPTY_SLOT
 
 config Q800
     bool

hw/m68k/mcf5206.c

@@ -582,7 +582,7 @@ static const MemoryRegionOps m5206_mbar_ops = {
     .write = m5206_mbar_writefn,
     .valid.min_access_size = 1,
     .valid.max_access_size = 4,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static void mcf5206_mbar_realize(DeviceState *dev, Error **errp)

hw/m68k/mcf5208.c

@@ -155,7 +155,7 @@ static uint64_t m5208_timer_read(void *opaque, hwaddr addr,
 static const MemoryRegionOps m5208_timer_ops = {
     .read = m5208_timer_read,
     .write = m5208_timer_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static uint64_t m5208_sys_read(void *opaque, hwaddr addr,
@@ -192,7 +192,7 @@ static void m5208_sys_write(void *opaque, hwaddr addr,
 static const MemoryRegionOps m5208_sys_ops = {
     .read = m5208_sys_read,
     .write = m5208_sys_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static uint64_t m5208_rcm_read(void *opaque, hwaddr addr,
@@ -224,7 +224,7 @@ static void m5208_rcm_write(void *opaque, hwaddr addr,
 static const MemoryRegionOps m5208_rcm_ops = {
     .read = m5208_rcm_read,
     .write = m5208_rcm_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static void mcf5208_sys_init(MemoryRegion *address_space, qemu_irq *pic,

hw/m68k/mcf_intc.c

@@ -166,7 +166,7 @@ static void mcf_intc_reset(DeviceState *dev)
 static const MemoryRegionOps mcf_intc_ops = {
     .read = mcf_intc_read,
     .write = mcf_intc_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static void mcf_intc_instance_init(Object *obj)

hw/m68k/next-kbd.c

@@ -162,7 +162,7 @@ static const MemoryRegionOps kbd_ops = {
     .write = kbd_writefn,
     .valid.min_access_size = 1,
     .valid.max_access_size = 4,
-    .endianness = DEVICE_NATIVE_ENDIAN,
+    .endianness = DEVICE_BIG_ENDIAN,
 };
 
 static const int qcode_to_nextkbd_keycode[] = {