Misc HW patches

- Remove uses of &first_cpu in rx-gdbsim and loongson3_virt machines (Philippe)
 - Convert few legacy qemu_allocate_irqs to qemu_init_irqs (Philippe)
 - Add tracing events in i2c-echo device (Titus)
 - Fix debug format string in USB EHCI (Zoltan)
 - Rework loader API to remove its target_words_bigendian() call (Philippe)
 - QOMify OMAP MMC device (Peter)
 - Remove legacy SD Card APIs (Peter)
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Merge tag 'hw-misc-20250131' of https://github.com/philmd/qemu into staging

Misc HW patches

- Remove uses of &first_cpu in rx-gdbsim and loongson3_virt machines (Philippe)
- Convert few legacy qemu_allocate_irqs to qemu_init_irqs (Philippe)
- Add tracing events in i2c-echo device (Titus)
- Fix debug format string in USB EHCI (Zoltan)
- Rework loader API to remove its target_words_bigendian() call (Philippe)
- QOMify OMAP MMC device (Peter)
- Remove legacy SD Card APIs (Peter)

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# gpg: Signature made Fri 31 Jan 2025 16:02:33 EST
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# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* tag 'hw-misc-20250131' of https://github.com/philmd/qemu: (36 commits)
  hw/sd: Remove unused SDState::enable
  hw/sd: Remove unused legacy functions, stop killing mammoths
  hw/sd: Remove unused 'enable' method from SDCardClass
  hw/sd/omap_mmc: Untabify
  hw/sd/omap_mmc: Remove unused coverswitch qemu_irq
  hw/arm/omap1: Inline creation of MMC
  hw/sd/omap_mmc: Use similar API for "wire up omap_clk" to other OMAP devices
  hw/sd/omap_mmc: Convert to SDBus API
  hw/sd/omap_mmc: Convert output qemu_irqs to gpio and sysbus IRQ APIs
  hw/sd/omap_mmc: Convert remaining 'struct omap_mmc_s' uses to OMAPMMCState
  hw/sd/omap_mmc: Do a minimal conversion to QDev
  hw/loader: Pass ELFDATA endian order argument to load_elf()
  hw/loader: Pass ELFDATA endian order argument to load_elf_as()
  hw/loader: Pass ELFDATA endian order argument to load_elf_ram_sym()
  hw/loader: Clarify local variable name in load_elf_ram_sym()
  hw/loader: Remove unused load_elf_ram()
  hw/avr/boot: Replace load_elf_ram_sym() -> load_elf_as()
  hw/usb/hcd-ehci: Fix debug printf format string
  hw/misc/i2c-echo: add tracing
  hw/char/pci-multi: Convert legacy qemu_allocate_irqs to qemu_init_irq
  ...

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

hw/misc/i2c-echo.c

@@ -13,6 +13,7 @@
 #include "qemu/main-loop.h"
 #include "block/aio.h"
 #include "hw/i2c/i2c.h"
+#include "trace.h"
 
 #define TYPE_I2C_ECHO "i2c-echo"
 OBJECT_DECLARE_SIMPLE_TYPE(I2CEchoState, I2C_ECHO)
@@ -80,11 +81,13 @@ static int i2c_echo_event(I2CSlave *s, enum i2c_event event)
     case I2C_START_RECV:
         state->pos = 0;
 
+        trace_i2c_echo_event(DEVICE(s)->canonical_path, "I2C_START_RECV");
         break;
 
     case I2C_START_SEND:
         state->pos = 0;
 
+        trace_i2c_echo_event(DEVICE(s)->canonical_path, "I2C_START_SEND");
         break;
 
     case I2C_FINISH:
@@ -92,12 +95,15 @@ static int i2c_echo_event(I2CSlave *s, enum i2c_event event)
         state->state = I2C_ECHO_STATE_START_SEND;
         i2c_bus_master(state->bus, state->bh);
 
+        trace_i2c_echo_event(DEVICE(s)->canonical_path, "I2C_FINISH");
         break;
 
     case I2C_NACK:
+        trace_i2c_echo_event(DEVICE(s)->canonical_path, "I2C_NACK");
         break;
 
     default:
+        trace_i2c_echo_event(DEVICE(s)->canonical_path, "UNHANDLED");
         return -1;
     }
 
@@ -112,6 +118,7 @@ static uint8_t i2c_echo_recv(I2CSlave *s)
         return 0xff;
     }
 
+    trace_i2c_echo_recv(DEVICE(s)->canonical_path, state->data[state->pos]);
     return state->data[state->pos++];
 }
 
@@ -119,6 +126,7 @@ static int i2c_echo_send(I2CSlave *s, uint8_t data)
 {
     I2CEchoState *state = I2C_ECHO(s);
 
+    trace_i2c_echo_send(DEVICE(s)->canonical_path, data);
     if (state->pos > 2) {
         return -1;
     }

hw/misc/trace-events

@@ -390,3 +390,8 @@ ivshmem_flat_read_write_mmr_invalid(uint64_t addr_offset) "No ivshmem register m
 ivshmem_flat_interrupt_invalid_peer(uint16_t peer_id) "Can't interrupt non-existing peer %u"
 ivshmem_flat_write_mmr(uint64_t addr_offset) "Write access at offset %"PRIu64
 ivshmem_flat_interrupt_peer(uint16_t peer_id, uint16_t vector_id) "Interrupting peer ID %u, vector %u..."
+
+# i2c-echo.c
+i2c_echo_event(const char *id, const char *event) "%s: %s"
+i2c_echo_recv(const char *id, uint8_t data) "%s: recv 0x%02" PRIx8
+i2c_echo_send(const char *id, uint8_t data) "%s: send 0x%02" PRIx8