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Commit 2baec42a authored by Skylar Chang's avatar Skylar Chang
Browse files

msm: ipa: EOT based on packet threshold 



Request GSI HW for EOT based on packet threshold
in addition to time threshold which is currently in use.
This change allows scaling uplink data rates.

Change-Id: Ia7fe53f5944b1aee4ab58904289f391b7f4559db
Acked-by: default avatarAdy Abraham <adta@qti.qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent 45933fac

drivers/platform/msm/ipa/ipa_v3/ipa_dp.c

+13 −6
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ 


#define IPA_SEND_MAX_DESC (20)



#define IPA_EOT_THRESH 32



static struct sk_buff *ipa3_get_skb_ipa_rx(unsigned int len, gfp_t flags);

static void ipa3_replenish_wlan_rx_cache(struct ipa3_sys_context *sys);

static void ipa3_replenish_rx_cache(struct ipa3_sys_context *sys);
@@ -236,18 +238,19 @@ static void ipa3_send_nop_desc(struct work_struct *work) 
	}

	list_add_tail(&tx_pkt->link, &sys->head_desc_list);

	sys->nop_pending = false;

	spin_unlock_bh(&sys->spinlock);



	memset(&nop_xfer, 0, sizeof(nop_xfer));

	nop_xfer.type = GSI_XFER_ELEM_NOP;

	nop_xfer.flags = GSI_XFER_FLAG_EOT;

	nop_xfer.xfer_user_data = tx_pkt;

	if (gsi_queue_xfer(sys->ep->gsi_chan_hdl, 1, &nop_xfer, true)) {

		spin_unlock_bh(&sys->spinlock);

		IPAERR("gsi_queue_xfer for ch:%lu failed\n",

			sys->ep->gsi_chan_hdl);

		queue_work(sys->wq, &sys->work);

		return;

	}

	spin_unlock_bh(&sys->spinlock);



	/* make sure TAG process is sent before clocks are gated */

	ipa3_ctx->tag_process_before_gating = true;
@@ -406,11 +409,14 @@ int ipa3_send(struct ipa3_sys_context *sys, 
		}



		if (i == (num_desc - 1)) {

			if (!sys->use_comm_evt_ring) {

			if (!sys->use_comm_evt_ring ||

			    (sys->pkt_sent % IPA_EOT_THRESH == 0)) {

				gsi_xfer[i].flags |=

					GSI_XFER_FLAG_EOT;

				gsi_xfer[i].flags |=

					GSI_XFER_FLAG_BEI;

			} else {

				send_nop = true;

			}

			gsi_xfer[i].xfer_user_data =

				tx_pkt_first;
@@ -429,11 +435,12 @@ int ipa3_send(struct ipa3_sys_context *sys, 
		goto failure;

	}





	if (sys->use_comm_evt_ring && !sys->nop_pending) {

	if (send_nop && !sys->nop_pending)

		sys->nop_pending = true;

		send_nop = true;

	}

	else

		send_nop = false;



	sys->pkt_sent++;

	spin_unlock_bh(&sys->spinlock);



	/* set the timer for sending the NOP descriptor */

drivers/platform/msm/ipa/ipa_v3/ipa_i.h

+1 −0
Original line number Diff line number Diff line
@@ -693,6 +693,7 @@ struct ipa3_sys_context { 
	struct work_struct repl_work;

	void (*repl_hdlr)(struct ipa3_sys_context *sys);

	struct ipa3_repl_ctx repl;

	u32 pkt_sent;



	/* ordering is important - mutable fields go above */

	struct ipa3_ep_context *ep;