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Commit fd8c19f7 authored by Andrei Danaila's avatar Andrei Danaila
Browse files

mhi: core: Enable ftrace events in MHI 



Enable ftrace events in MHI for the tracing of power
state transitions.

Change-Id: I74373b7429c6d7316c4a66db141cc09e2a4418dd
Signed-off-by: default avatarAndrei Danaila <adanaila@codeaurora.org>
parent f7d25bdf

drivers/platform/msm/mhi/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -10,3 +10,4 @@ obj-y += mhi_sys.o 
obj-y += mhi_bhi.o

obj-y += mhi_pm.o

obj-y += mhi_ssr.o

CFLAGS_mhi_iface.o := -I$(src)

drivers/platform/msm/mhi/mhi_iface.c

+4 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
 * GNU General Public License for more details.

 */





#include <linux/pci.h>

#include <linux/gpio.h>

#include <linux/module.h>
@@ -18,6 +19,9 @@ 
#include <linux/delay.h>

#include <linux/debugfs.h>



#define CREATE_TRACE_POINTS

#include "mhi_trace.h"



#include "mhi_sys.h"

#include "mhi.h"

#include "mhi_macros.h"

drivers/platform/msm/mhi/mhi_isr.c

+2 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/interrupt.h>



#include "mhi_sys.h"

#include "mhi_trace.h"





irqreturn_t mhi_msi_handlr(int irq_number, void *dev_id)
@@ -30,6 +31,7 @@ irqreturn_t mhi_msi_handlr(int irq_number, void *dev_id) 
	mhi_dev_ctxt->msi_counter[IRQ_TO_MSI(mhi_dev_ctxt, irq_number)]++;

	mhi_log(MHI_MSG_VERBOSE,

		"Got MSI 0x%x\n", IRQ_TO_MSI(mhi_dev_ctxt, irq_number));

	trace_mhi_msi(IRQ_TO_MSI(mhi_dev_ctxt, irq_number));

	switch (IRQ_TO_MSI(mhi_dev_ctxt, irq_number)) {

	case 0:

	case 1:

drivers/platform/msm/mhi/mhi_main.c

+14 −6
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include "mhi.h"

#include "mhi_hwio.h"

#include "mhi_macros.h"

#include "mhi_trace.h"



static void mhi_write_db(struct mhi_device_ctxt *mhi_dev_ctxt,

		  void __iomem *io_addr_lower,
@@ -585,6 +586,7 @@ enum MHI_STATUS mhi_queue_xfer(struct mhi_client_handle *client_handle, 
	pkt_loc = mhi_dev_ctxt->mhi_local_chan_ctxt[chan].wp;

	pkt_loc->data_tx_pkt.buffer_ptr = buf;

	pkt_loc->type.info = mhi_flags;

	trace_mhi_tre(pkt_loc, chan, 0);



	if (likely(0 != client_handle->intmod_t))

		MHI_TRB_SET_INFO(TX_TRB_BEI, pkt_loc, 1);
@@ -632,17 +634,19 @@ enum MHI_STATUS mhi_send_cmd(struct mhi_device_ctxt *mhi_dev_ctxt, 
	enum MHI_PKT_TYPE ring_el_type = MHI_PKT_TYPE_NOOP_CMD;

	struct mutex *chan_mutex = NULL;



	if (chan >= MHI_MAX_CHANNELS ||

		cmd >= MHI_COMMAND_MAX_NR || mhi_dev_ctxt == NULL) {

		mhi_log(MHI_MSG_ERROR,

			"Invalid channel id, received id: 0x%x", chan);

		return MHI_STATUS_ERROR;

	}



	mhi_log(MHI_MSG_INFO,

		"Entered, MHI state %d dev_exec_env %d chan %d cmd %d\n",

			mhi_dev_ctxt->mhi_state,

			mhi_dev_ctxt->dev_exec_env,

			chan, cmd);

	if (chan >= MHI_MAX_CHANNELS ||

		cmd >= MHI_COMMAND_MAX_NR || NULL == mhi_dev_ctxt) {

		mhi_log(MHI_MSG_ERROR,

			"Invalid channel id, received id: 0x%x", chan);

		goto error_general;

	}



	mhi_assert_device_wake(mhi_dev_ctxt);

	/*

	 * If there is a cmd pending a struct device confirmation,
@@ -863,6 +867,8 @@ enum MHI_STATUS parse_xfer_event(struct mhi_device_ctxt *ctxt, 
	u32 nr_trb_to_parse;

	u32 i = 0;



	trace_mhi_ev(event);



	switch (MHI_EV_READ_CODE(EV_TRB_CODE, event)) {

	case MHI_EVENT_CC_EOB:

		chan = MHI_EV_READ_CHID(EV_CHID, event);
@@ -906,6 +912,8 @@ enum MHI_STATUS parse_xfer_event(struct mhi_device_ctxt *ctxt, 
							phy_ev_trb_loc);

		local_trb_loc = (union mhi_xfer_pkt *)local_chan_ctxt->rp;



		trace_mhi_tre(local_trb_loc, chan, 1);



		ret_val = get_nr_enclosed_el(local_chan_ctxt,

				      local_trb_loc,

				      local_ev_trb_loc,

drivers/platform/msm/mhi/mhi_states.c

+2 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 


#include "mhi_sys.h"

#include "mhi_hwio.h"

#include "mhi_trace.h"



static void conditional_chan_db_write(

				struct mhi_device_ctxt *mhi_dev_ctxt, u32 chan)
@@ -656,6 +657,7 @@ static enum MHI_STATUS process_stt_work_item( 


	mhi_log(MHI_MSG_INFO, "Transitioning to %d\n",

				(int)cur_work_item);

	trace_mhi_state(cur_work_item);

	switch (cur_work_item) {

	case STATE_TRANSITION_BHI:

		ret_val = process_bhi_transition(mhi_dev_ctxt, cur_work_item);