usb-ehci: improve mmio tracing
Add a separate tracepoint to log how register values change in response
to a mmio write. Especially useful for registers which have read-only
or clear-on-write bits in them.
No change in behavior.
Signed-off-by: Gerd Hoffmann <[email protected]>
diff --git a/trace-events b/trace-events
index 38c8939..1ee711e 100644
--- a/trace-events
+++ b/trace-events
@@ -197,7 +197,8 @@
# hw/usb-ehci.c
disable usb_ehci_reset(void) "=== RESET ==="
disable usb_ehci_mmio_readl(uint32_t addr, const char *str, uint32_t val) "rd mmio %04x [%s] = %x"
-disable usb_ehci_mmio_writel(uint32_t addr, const char *str, uint32_t val, uint32_t oldval) "wr mmio %04x [%s] = %x (old: %x)"
+disable usb_ehci_mmio_writel(uint32_t addr, const char *str, uint32_t val) "wr mmio %04x [%s] = %x"
+disable usb_ehci_mmio_change(uint32_t addr, const char *str, uint32_t new, uint32_t old) "ch mmio %04x [%s] = %x (old: %x)"
disable usb_ehci_usbsts(const char *sts, int state) "usbsts %s %d"
disable usb_ehci_state(const char *schedule, const char *state) "%s schedule %s"
disable usb_ehci_qh(uint32_t addr, uint32_t next, uint32_t c_qtd, uint32_t n_qtd, uint32_t a_qtd, int rl, int mplen, int eps, int ep, int devaddr, int c, int h, int dtc, int i) "QH @ %08x: next %08x qtds %08x,%08x,%08x - rl %d, mplen %d, eps %d, ep %d, dev %d, c %d, h %d, dtc %d, i %d"
