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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2019-04-26 15:23:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 14:53:58 +0200 |
| commit | 90d6d5731da79a55de51552d930f9ad0b13262a2 (patch) | |
| tree | 67de377ff5dfebaeda0f0df34099953736ff0774 /drivers/usb/host/xhci.h | |
| parent | xhci: add port and bus number to port dynamic debugging (diff) | |
| download | linux-90d6d5731da79a55de51552d930f9ad0b13262a2.tar.xz linux-90d6d5731da79a55de51552d930f9ad0b13262a2.zip | |
xhci: Add tracing for input control context
Add tracing for the add and drop bits in the input control context
used in Address device, configure endpoint, evaluate context commands.
The add and drop bits tell xHC which enpoints are added and dropped.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index abbd4813e8a2..a450a99e90eb 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2401,6 +2401,35 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, return str; } +static inline const char *xhci_decode_ctrl_ctx(unsigned long drop, + unsigned long add) +{ + static char str[1024]; + unsigned int bit; + int ret = 0; + + if (drop) { + ret = sprintf(str, "Drop:"); + for_each_set_bit(bit, &drop, 32) + ret += sprintf(str + ret, " %d%s", + bit / 2, + bit % 2 ? "in":"out"); + ret += sprintf(str + ret, ", "); + } + + if (add) { + ret += sprintf(str + ret, "Add:%s%s", + (add & SLOT_FLAG) ? " slot":"", + (add & EP0_FLAG) ? " ep0":""); + add &= ~(SLOT_FLAG | EP0_FLAG); + for_each_set_bit(bit, &add, 32) + ret += sprintf(str + ret, " %d%s", + bit / 2, + bit % 2 ? "in":"out"); + } + return str; +} + static inline const char *xhci_decode_slot_context(u32 info, u32 info2, u32 tt_info, u32 state) { |