diff options
Diffstat (limited to 'drivers/usb/dwc3/io.h')
| -rw-r--r-- | drivers/usb/dwc3/io.h | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/io.h b/drivers/usb/dwc3/io.h index d94441c14d8..6a79c8e66bb 100644 --- a/drivers/usb/dwc3/io.h +++ b/drivers/usb/dwc3/io.h @@ -20,27 +20,51 @@ #define __DRIVERS_USB_DWC3_IO_H #include <linux/io.h> - +#include "trace.h" +#include "debug.h" #include "core.h" static inline u32 dwc3_readl(void __iomem *base, u32 offset) { + u32 offs = offset - DWC3_GLOBALS_REGS_START; + u32 value; + /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ - return readl(base + (offset - DWC3_GLOBALS_REGS_START)); + value = readl(base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_readl, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); + + return value; } static inline void dwc3_writel(void __iomem *base, u32 offset, u32 value) { + u32 offs = offset - DWC3_GLOBALS_REGS_START; + /* * We requested the mem region starting from the Globals address * space, see dwc3_probe in core.c. * However, the offsets are given starting from xHCI address space. */ - writel(value, base + (offset - DWC3_GLOBALS_REGS_START)); + writel(value, base + offs); + + /* + * When tracing we want to make it easy to find the correct address on + * documentation, so we revert it back to the proper addresses, the + * same way they are described on SNPS documentation + */ + dwc3_trace(trace_dwc3_writel, "addr %p value %08x", + base - DWC3_GLOBALS_REGS_START + offset, value); } #endif /* __DRIVERS_USB_DWC3_IO_H */ |