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Commit 3b3f3f7b authored by Bhaumik Bhatt's avatar Bhaumik Bhatt
Browse files

mhi: core: set bei bit based on event ring intmod value 



BEI bit should be set based on event ring intmod value in the
channel struct to allow easy pre-configured access when sending
out any packets. This allows device to respond directly to
packets without the need of waiting for interrupt moderation
time period.

Change-Id: Ib3814bef972bac254715b2d252d7f4bce776803a
Signed-off-by: default avatarBhaumik Bhatt <bbhatt@codeaurora.org>
parent cc109077

drivers/bus/mhi/core/mhi_init.c

+3 −0
Original line number Diff line number Diff line
@@ -1373,6 +1373,9 @@ int of_register_mhi_controller(struct mhi_controller *mhi_cntrl) 
		mutex_init(&mhi_chan->mutex);

		init_completion(&mhi_chan->completion);

		rwlock_init(&mhi_chan->lock);



		mhi_event = &mhi_cntrl->mhi_event[mhi_chan->er_index];

		mhi_chan->bei = !!(mhi_event->intmod);

	}



	if (mhi_cntrl->bounce_buf) {

drivers/bus/mhi/core/mhi_internal.h

+1 −1
Original line number Diff line number Diff line
@@ -663,7 +663,6 @@ struct mhi_chan { 
	struct mhi_ring buf_ring;

	struct mhi_ring tre_ring;

	u32 er_index;

	u32 intmod;

	enum mhi_ch_type type;

	enum dma_data_direction dir;

	struct db_cfg db_cfg;
@@ -671,6 +670,7 @@ struct mhi_chan { 
	enum MHI_XFER_TYPE xfer_type;

	enum MHI_CH_STATE ch_state;

	enum MHI_EV_CCS ccs;

	bool bei; /* based on interrupt moderation, true if greater than 0 */

	bool lpm_notify;

	bool configured;

	bool offload_ch;

drivers/bus/mhi/core/mhi_main.c

+4 −5
Original line number Diff line number Diff line
@@ -396,7 +396,7 @@ int mhi_queue_skb(struct mhi_device *mhi_dev, 


	mhi_tre->ptr = MHI_TRE_DATA_PTR(buf_info->p_addr);

	mhi_tre->dword[0] = MHI_TRE_DATA_DWORD0(buf_info->len);

	mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(1, 1, 0, 0);

	mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(mhi_chan->bei, 1, 0, 0);



	MHI_VERB("chan:%d WP:0x%llx TRE:0x%llx 0x%08x 0x%08x\n", mhi_chan->chan,

		 (u64)mhi_to_physical(tre_ring, mhi_tre), mhi_tre->ptr,
@@ -479,7 +479,7 @@ int mhi_queue_dma(struct mhi_device *mhi_dev, 
	} else {

		mhi_tre->ptr = MHI_TRE_DATA_PTR(buf_info->p_addr);

		mhi_tre->dword[0] = MHI_TRE_DATA_DWORD0(buf_info->len);

		mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(1, 1, 0, 0);

		mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(mhi_chan->bei, 1, 0, 0);

	}



	MHI_VERB("chan:%d WP:0x%llx TRE:0x%llx 0x%08x 0x%08x\n", mhi_chan->chan,
@@ -514,7 +514,7 @@ int mhi_gen_tre(struct mhi_controller *mhi_cntrl, 
	struct mhi_ring *buf_ring, *tre_ring;

	struct mhi_tre *mhi_tre;

	struct mhi_buf_info *buf_info;

	int eot, eob, chain, bei;

	int eot, eob, chain;

	int ret;



	buf_ring = &mhi_chan->buf_ring;
@@ -534,12 +534,11 @@ int mhi_gen_tre(struct mhi_controller *mhi_cntrl, 
	eob = !!(flags & MHI_EOB);

	eot = !!(flags & MHI_EOT);

	chain = !!(flags & MHI_CHAIN);

	bei = !!(mhi_chan->intmod);



	mhi_tre = tre_ring->wp;

	mhi_tre->ptr = MHI_TRE_DATA_PTR(buf_info->p_addr);

	mhi_tre->dword[0] = MHI_TRE_DATA_DWORD0(buf_len);

	mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(bei, eot, eob, chain);

	mhi_tre->dword[1] = MHI_TRE_DATA_DWORD1(mhi_chan->bei, eot, eob, chain);



	MHI_VERB("chan:%d WP:0x%llx TRE:0x%llx 0x%08x 0x%08x\n", mhi_chan->chan,

		 (u64)mhi_to_physical(tre_ring, mhi_tre), mhi_tre->ptr,