/* Based on net/mac80211/trace.h */

#undef TRACE_SYSTEM
#define TRACE_SYSTEM mac802154

#if !defined(__MAC802154_DRIVER_TRACE) || defined(TRACE_HEADER_MULTI_READ)
#define __MAC802154_DRIVER_TRACE

#include <linux/tracepoint.h>

#include <net/mac802154.h>
#include "ieee802154_i.h"

#define MAXNAME		32
#define LOCAL_ENTRY	__array(char, wpan_phy_name, MAXNAME)
#define LOCAL_ASSIGN	strlcpy(__entry->wpan_phy_name, \
				wpan_phy_name(local->hw.phy), MAXNAME)
#define LOCAL_PR_FMT	"%s"
#define LOCAL_PR_ARG	__entry->wpan_phy_name

#define CCA_ENTRY __field(enum nl802154_cca_modes, cca_mode) \
		  __field(enum nl802154_cca_opts, cca_opt)
#define CCA_ASSIGN \
	do {                                     \
		(__entry->cca_mode) = cca->mode; \
		(__entry->cca_opt) = cca->opt;   \
	} while (0)
#define CCA_PR_FMT "cca_mode: %d, cca_opt: %d"
#define CCA_PR_ARG __entry->cca_mode, __entry->cca_opt

#define BOOL_TO_STR(bo) (bo) ? "true" : "false"

/* Tracing for driver callbacks */

DECLARE_EVENT_CLASS(local_only_evt,
	TP_PROTO(struct ieee802154_local *local),
	TP_ARGS(local),
	TP_STRUCT__entry(
		LOCAL_ENTRY
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
	),
	TP_printk(LOCAL_PR_FMT, LOCAL_PR_ARG)
);

DEFINE_EVENT(local_only_evt, 802154_drv_return_void,
	TP_PROTO(struct ieee802154_local *local),
	TP_ARGS(local)
);

TRACE_EVENT(802154_drv_return_int,
	TP_PROTO(struct ieee802154_local *local, int ret),
	TP_ARGS(local, ret),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(int, ret)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->ret = ret;
	),
	TP_printk(LOCAL_PR_FMT ", returned: %d", LOCAL_PR_ARG,
		  __entry->ret)
);

DEFINE_EVENT(local_only_evt, 802154_drv_start,
	TP_PROTO(struct ieee802154_local *local),
	TP_ARGS(local)
);

DEFINE_EVENT(local_only_evt, 802154_drv_stop,
	TP_PROTO(struct ieee802154_local *local),
	TP_ARGS(local)
);

TRACE_EVENT(802154_drv_set_channel,
	TP_PROTO(struct ieee802154_local *local, u8 page, u8 channel),
	TP_ARGS(local, page, channel),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(u8, page)
		__field(u8, channel)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->page = page;
		__entry->channel = channel;
	),
	TP_printk(LOCAL_PR_FMT ", page: %d, channel: %d", LOCAL_PR_ARG,
		  __entry->page, __entry->channel)
);

TRACE_EVENT(802154_drv_set_cca_mode,
	TP_PROTO(struct ieee802154_local *local,
		 const struct wpan_phy_cca *cca),
	TP_ARGS(local, cca),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		CCA_ENTRY
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		CCA_ASSIGN;
	),
	TP_printk(LOCAL_PR_FMT ", " CCA_PR_FMT, LOCAL_PR_ARG,
		  CCA_PR_ARG)
);

TRACE_EVENT(802154_drv_set_cca_ed_level,
	TP_PROTO(struct ieee802154_local *local, s32 mbm),
	TP_ARGS(local, mbm),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(s32, mbm)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->mbm = mbm;
	),
	TP_printk(LOCAL_PR_FMT ", ed level: %d", LOCAL_PR_ARG,
		  __entry->mbm)
);

TRACE_EVENT(802154_drv_set_tx_power,
	TP_PROTO(struct ieee802154_local *local, s32 power),
	TP_ARGS(local, power),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(s32, power)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->power = power;
	),
	TP_printk(LOCAL_PR_FMT ", mbm: %d", LOCAL_PR_ARG,
		 __entry->power)
);

TRACE_EVENT(802154_drv_set_lbt_mode,
	TP_PROTO(struct ieee802154_local *local, bool mode),
	TP_ARGS(local, mode),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(bool, mode)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->mode = mode;
	),
	TP_printk(LOCAL_PR_FMT ", lbt mode: %s", LOCAL_PR_ARG,
		  BOOL_TO_STR(__entry->mode))
);

TRACE_EVENT(802154_drv_set_short_addr,
	TP_PROTO(struct ieee802154_local *local, __le16 short_addr),
	TP_ARGS(local, short_addr),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(__le16, short_addr)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->short_addr = short_addr;
	),
	TP_printk(LOCAL_PR_FMT ", short addr: 0x%04x", LOCAL_PR_ARG,
		  le16_to_cpu(__entry->short_addr))
);

TRACE_EVENT(802154_drv_set_pan_id,
	TP_PROTO(struct ieee802154_local *local, __le16 pan_id),
	TP_ARGS(local, pan_id),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(__le16, pan_id)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->pan_id = pan_id;
	),
	TP_printk(LOCAL_PR_FMT ", pan id: 0x%04x", LOCAL_PR_ARG,
		  le16_to_cpu(__entry->pan_id))
);

TRACE_EVENT(802154_drv_set_extended_addr,
	TP_PROTO(struct ieee802154_local *local, __le64 extended_addr),
	TP_ARGS(local, extended_addr),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(__le64, extended_addr)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->extended_addr = extended_addr;
	),
	TP_printk(LOCAL_PR_FMT ", extended addr: 0x%llx", LOCAL_PR_ARG,
		  le64_to_cpu(__entry->extended_addr))
);

TRACE_EVENT(802154_drv_set_pan_coord,
	TP_PROTO(struct ieee802154_local *local, bool is_coord),
	TP_ARGS(local, is_coord),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(bool, is_coord)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->is_coord = is_coord;
	),
	TP_printk(LOCAL_PR_FMT ", is_coord: %s", LOCAL_PR_ARG,
		  BOOL_TO_STR(__entry->is_coord))
);

TRACE_EVENT(802154_drv_set_csma_params,
	TP_PROTO(struct ieee802154_local *local, u8 min_be, u8 max_be,
		 u8 max_csma_backoffs),
	TP_ARGS(local, min_be, max_be, max_csma_backoffs),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(u8, min_be)
		__field(u8, max_be)
		__field(u8, max_csma_backoffs)
	),
	TP_fast_assign(
		LOCAL_ASSIGN,
		__entry->min_be = min_be;
		__entry->max_be = max_be;
		__entry->max_csma_backoffs = max_csma_backoffs;
	),
	TP_printk(LOCAL_PR_FMT ", min be: %d, max be: %d, max csma backoffs: %d",
		  LOCAL_PR_ARG, __entry->min_be, __entry->max_be,
		  __entry->max_csma_backoffs)
);

TRACE_EVENT(802154_drv_set_max_frame_retries,
	TP_PROTO(struct ieee802154_local *local, s8 max_frame_retries),
	TP_ARGS(local, max_frame_retries),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(s8, max_frame_retries)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->max_frame_retries = max_frame_retries;
	),
	TP_printk(LOCAL_PR_FMT ", max frame retries: %d", LOCAL_PR_ARG,
		  __entry->max_frame_retries)
);

TRACE_EVENT(802154_drv_set_promiscuous_mode,
	TP_PROTO(struct ieee802154_local *local, bool on),
	TP_ARGS(local, on),
	TP_STRUCT__entry(
		LOCAL_ENTRY
		__field(bool, on)
	),
	TP_fast_assign(
		LOCAL_ASSIGN;
		__entry->on = on;
	),
	TP_printk(LOCAL_PR_FMT ", promiscuous mode: %s", LOCAL_PR_ARG,
		  BOOL_TO_STR(__entry->on))
);

#endif /* !__MAC802154_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE trace
#include <trace/define_trace.h>
ing a USB mass storage device to a hub.

This is because when connecting a USB mass storage device to a hub, the
initial DMA transfers can take over 200ms to complete and cppi41
autosuspend delay times out.

To fix the issue, we want to implement refcounting for chan_busy array
that contains the active dma transfers. Increasing the autosuspend delay
won't help as that the delay could be potentially seconds, and it's best
to let the USB subsystem to deal with the timeouts on errors.

The earlier attempt for runtime PM was buggy as the pm_runtime_get/put()
calls could get unpaired easily as they did not follow the state of
the chan_busy array as described in commit 098de42ad670 ("dmaengine:
cppi41: Fix unpaired pm runtime when only a USB hub is connected".

Let's fix the issue by adding pm_runtime_get() to where a new transfer
is added to the chan_busy array, and calls to pm_runtime_put() where
chan_busy array entry is cleared. This prevents any autosuspend timeouts
from happening while dma transfers are active.

Fixes: 098de42ad670 ("dmaengine: cppi41: Fix unpaired pm runtime when
only a USB hub is connected")
Fixes: fdea2d09b997 ("dmaengine: cppi41: Add basic PM runtime support")
Cc: Andy Shevchenko &lt;andy.shevchenko@gmail.com&gt;
Cc: Bin Liu &lt;b-liu@ti.com&gt;
Cc: Grygorii Strashko &lt;grygorii.strashko@ti.com&gt;
Cc: Kevin Hilman &lt;khilman@baylibre.com&gt;
Cc: Patrick Titiano &lt;ptitiano@baylibre.com&gt;
Cc: Sergei Shtylyov &lt;sergei.shtylyov@cogentembedded.com&gt;
Signed-off-by: Tony Lindgren &lt;tony@atomide.com&gt;
Tested-by: Bin Liu &lt;b-liu@ti.com&gt;
Signed-off-by: Vinod Koul &lt;vinod.koul@intel.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=ae4a3e028bb8b59e7cfeb0cc9ef03d885182ce8b'>Diffstat</a> (limited to 'include/uapi/sound/tlv.h')</div><table summary='diffstat' class='diffstat'>