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Tsirkin" , Sunil Muthuswamy , Marcelo Tosatti , Michael Tokarev , Richard Henderson , qemu-block@nongnu.org, Paolo Bonzini , Gerd Hoffmann , Bernhard Beschow Subject: [PATCH 1/8] hw/timer/i8254: Add I/O trace events Date: Fri, 17 Oct 2025 13:33:31 +0200 Message-ID: <20251017113338.7953-2-shentey@gmail.com> X-Mailer: git-send-email 2.51.1.dirty In-Reply-To: <20251017113338.7953-1-shentey@gmail.com> References: <20251017113338.7953-1-shentey@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::329; envelope-from=shentey@gmail.com; helo=mail-wm1-x329.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1760701025285154100 Content-Type: text/plain; charset="utf-8" Allows to see how the guest interacts with the device. Signed-off-by: Bernhard Beschow --- hw/timer/i8254.c | 6 ++++++ hw/timer/trace-events | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/hw/timer/i8254.c b/hw/timer/i8254.c index 4b25c487f7..7033ebf50d 100644 --- a/hw/timer/i8254.c +++ b/hw/timer/i8254.c @@ -29,6 +29,7 @@ #include "hw/timer/i8254.h" #include "hw/timer/i8254_internal.h" #include "qom/object.h" +#include "trace.h" =20 //#define DEBUG_PIT =20 @@ -130,6 +131,8 @@ static void pit_ioport_write(void *opaque, hwaddr addr, int channel, access; PITChannelState *s; =20 + trace_pit_ioport_write(addr, val); + addr &=3D 3; if (addr =3D=3D 3) { channel =3D val >> 6; @@ -248,6 +251,9 @@ static uint64_t pit_ioport_read(void *opaque, hwaddr ad= dr, break; } } + + trace_pit_ioport_read(addr, ret); + return ret; } =20 diff --git a/hw/timer/trace-events b/hw/timer/trace-events index c5b6db49f5..2bb51f95ea 100644 --- a/hw/timer/trace-events +++ b/hw/timer/trace-events @@ -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" =20 +# i8254.c +pit_ioport_read(uint8_t addr, uint32_t value) "[0x%" PRIx8 "] -> 0x%" PRIx= 32 +pit_ioport_write(uint8_t addr, uint32_t value) "[0x%" PRIx8 "] <- 0x%" PRI= x32 + # 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 --=20 2.51.1.dirty