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hw/timer/i8254: Add I/O trace events

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Allows to see how the guest interacts with the device.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20251019210303.104718-2-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Bernhard Beschow 2025-10-19 23:02:54 +02:00 • committed by Philippe Mathieu-Daudé
parent 5e7ea00c5f
commit be2f66e07a
2 changed files with 10 additions and 0 deletions
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6
hw/timer/i8254.c
View file

@ -29,6 +29,7 @@
#include "hw/timer/i8254.h"
#include "hw/timer/i8254_internal.h"
#include "qom/object.h"
#include "trace.h"
//#define DEBUG_PIT
@ -130,6 +131,8 @@ static void pit_ioport_write(void *opaque, hwaddr addr,
int channel, access;
PITChannelState *s;
trace_pit_ioport_write(addr, val);
addr &= 3;
if (addr == 3) {
channel = val >> 6;
@ -248,6 +251,9 @@ static uint64_t pit_ioport_read(void *opaque, hwaddr addr,
break;
}
}
trace_pit_ioport_read(addr, ret);
return ret;
}

4
hw/timer/trace-events
View file

@ -49,6 +49,10 @@ cmsdk_apb_dualtimer_read(uint64_t offset, uint64_t data, unsigned size) "CMSDK A
cmsdk_apb_dualtimer_write(uint64_t offset, uint64_t data, unsigned size) "CMSDK APB dualtimer write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u"
cmsdk_apb_dualtimer_reset(void) "CMSDK APB dualtimer: reset"
# i8254.c
pit_ioport_read(uint8_t addr, uint32_t value) "[0x%" PRIx8 "] -> 0x%" PRIx32
pit_ioport_write(uint8_t addr, uint32_t value) "[0x%" PRIx8 "] <- 0x%" PRIx32
# imx_gpt.c
imx_gpt_set_freq(uint32_t clksrc, uint32_t freq) "Setting clksrc %u to %u Hz"
imx_gpt_read(const char *name, uint64_t value) "%s -> 0x%08" PRIx64