Merge tag 'hw-misc-20240913' of https://github.com/philmd/qemu into staging

Misc HW & UI patches

- Remove deprecated SH4 SHIX machine TC58128 NAND EEPROM (Phil)
- Remove deprecated CRIS target (Phil)
- Remove deprecated RISC-V 'any' CPU type (Phil)
- Add fifo8_peek_buf() to correctly handle FIFO wraparound (Mark)
- Minor cleanups in Designware PCIe, PL011 and loongson IPI models (Phil)
- Fixes in TI TMP105 temperature (Guenter)
- Convert Sun ESCC and ADB mouses to QemuInputHandler (Mark)
- Prevent heap overflow in VIRTIO sound device (Volker)
- Cleanups around g_assert_not_reached() call (Pierrick)
- Add Clément as VT-d reviewer (Clément)
- Prevent stuck modifier keys and unexpected text input on Windows (Volker)
- Explicitly set SDL2 swap interval when OpenGL is enabled (Gert)

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* tag 'hw-misc-20240913' of https://github.com/philmd/qemu: (60 commits)
  ui: remove break after g_assert_not_reached()
  ui/sdl2: set swap interval explicitly when OpenGL is enabled
  ui/sdl2: ignore GUI keys in SDL_TEXTINPUT handler
  ui/sdl2: release all modifiers
  system: replace assert(0) with g_assert_not_reached()
  hw/pci-host: remove break after g_assert_not_reached()
  hw/misc: remove break after g_assert_not_reached()
  hw/gpio: remove break after g_assert_not_reached()
  hw/watchdog: replace assert(0) with g_assert_not_reached()
  hw/core: replace assert(0) with g_assert_not_reached()
  hw/char: replace assert(0) with g_assert_not_reached()
  hw/input/adb-mouse: convert to use QemuInputHandler
  hw/char/escc: convert Sun mouse to use QemuInputHandler
  hw/sensor/tmp105: Lower 4 bit of limit registers are always 0
  hw/sensor/tmp105: OS (one-shot) bit in config register always returns 0
  hw/sensor/tmp105: Pass 'oneshot' argument to tmp105_alarm_update()
  hw/sensor/tmp105: Use registerfields API
  hw/sensor/tmp105: Coding style fixes
  tests/unit: Comment FIFO8 tests
  tests/unit: Expand test_fifo8_peek_buf_wrap() coverage
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/include/qemu/fifo8.h b/include/qemu/fifo8.h
index d1d06754d8..4f768d4ee3 100644
--- a/include/qemu/fifo8.h
+++ b/include/qemu/fifo8.h
@@ -63,6 +63,17 @@ void fifo8_push_all(Fifo8 *fifo, const uint8_t *data, uint32_t num);
 uint8_t fifo8_pop(Fifo8 *fifo);
 
 /**
+ * fifo8_peek:
+ * @fifo: fifo to peek from
+ *
+ * Peek the data byte at the current head of the FIFO. Clients are responsible
+ * for checking for emptyness using fifo8_is_empty().
+ *
+ * Returns: The peeked data byte.
+ */
+uint8_t fifo8_peek(Fifo8 *fifo);
+
+/**
  * fifo8_pop_buf:
  * @fifo: FIFO to pop from
  * @dest: the buffer to write the data into (can be NULL)
@@ -77,6 +88,20 @@ uint8_t fifo8_pop(Fifo8 *fifo);
 uint32_t fifo8_pop_buf(Fifo8 *fifo, uint8_t *dest, uint32_t destlen);
 
 /**
+ * fifo8_peek_buf:
+ * @fifo: FIFO to read from
+ * @dest: the buffer to write the data into (can be NULL)
+ * @destlen: size of @dest and maximum number of bytes to peek
+ *
+ * Peek a number of elements from the FIFO up to a maximum of @destlen.
+ * The peeked data is copied into the @dest buffer.
+ * Care is taken when the data wraps around in the ring buffer.
+ *
+ * Returns: number of bytes peeked.
+ */
+uint32_t fifo8_peek_buf(Fifo8 *fifo, uint8_t *dest, uint32_t destlen);
+
+/**
  * fifo8_pop_bufptr:
  * @fifo: FIFO to pop from
  * @max: maximum number of bytes to pop