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Commit e8c66000 authored by Bojun Pan's avatar Bojun Pan Committed by Gerrit - the friendly Code Review server
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msm: ipa: add debugfs support for NAPI chaining 



Runtime enable/disable NAPI chaining feature using debugfs

Change-Id: I4b60caad3b75243d3c20281a312af95fb449174a
Signed-off-by: default avatarBojun Pan <bojunp@codeaurora.org>
parent 5ebcda44

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

+3 −0
Original line number Diff line number Diff line
@@ -5206,6 +5206,9 @@ static int ipa3_pre_init(const struct ipa3_plat_drv_res *resource_p, 
	/* vote for svs2 on bootup */

	ipa3_ctx->curr_ipa_clk_rate = ipa3_ctx->ctrl->ipa_clk_rate_svs2;



	/* Enable ipa3_ctx->enable_napi_chain */

	ipa3_ctx->enable_napi_chain = 1;



	/* enable IPA clocks explicitly to allow the initialization */

	ipa3_enable_clks();

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

+7 −0
Original line number Diff line number Diff line
@@ -2272,6 +2272,13 @@ void ipa3_debugfs_init(void) 
		goto fail;

	}



	file = debugfs_create_u32("enable_napi_chain", IPA_READ_WRITE_MODE,

		dent, &ipa3_ctx->enable_napi_chain);

	if (!file) {

		IPAERR("could not create enable_napi_chain file\n");

		goto fail;

	}



	file = debugfs_create_u32("clock_scaling_bw_threshold_nominal_mbps",

		IPA_READ_WRITE_MODE, dent,

		&ipa3_ctx->ctrl->clock_scaling_bw_threshold_nominal);

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

+12 −4
Original line number Diff line number Diff line
@@ -3913,8 +3913,10 @@ static int ipa_poll_gsi_n_pkt(struct ipa3_sys_context *sys, 
		sys->ep->bytes_xfered_valid = false;

		idx++;

	}

	if (expected_num == idx)

	if (expected_num == idx) {

		*actual_num = idx;

		return GSI_STATUS_SUCCESS;

	}



	ret = gsi_poll_n_channel(sys->ep->gsi_chan_hdl,

		xfer_notify, expected_num - idx, &poll_num);
@@ -3923,6 +3925,7 @@ static int ipa_poll_gsi_n_pkt(struct ipa3_sys_context *sys, 
			*actual_num = idx;

			return GSI_STATUS_SUCCESS;

		} else {

			*actual_num = 0;

			return ret;

		}

	} else if (ret != GSI_STATUS_SUCCESS) {
@@ -3930,7 +3933,7 @@ static int ipa_poll_gsi_n_pkt(struct ipa3_sys_context *sys, 
			*actual_num = idx;

			return GSI_STATUS_SUCCESS;

		}



		*actual_num = 0;

		IPAERR("Poll channel err: %d\n", ret);

		return ret;

	}
@@ -3985,8 +3988,13 @@ int ipa3_rx_poll(u32 clnt_hdl, int weight) 
	while (remain_aggr_weight > 0 &&

			atomic_read(&ep->sys->curr_polling_state)) {

		atomic_set(&ipa3_ctx->transport_pm.eot_activity, 1);

		if (ipa3_ctx->enable_napi_chain) {

			ret = ipa_poll_gsi_n_pkt(ep->sys, mem_info,

				remain_aggr_weight, &num);

		} else {

			ret = ipa_poll_gsi_n_pkt(ep->sys, mem_info,

				1, &num);

		}

		if (ret)

			break;

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

+1 −0
Original line number Diff line number Diff line
@@ -1580,6 +1580,7 @@ struct ipa3_context { 
	struct device *uc_pdev;

	spinlock_t idr_lock;

	u32 enable_clock_scaling;

	u32 enable_napi_chain;

	u32 curr_ipa_clk_rate;

	bool q6_proxy_clk_vote_valid;

	struct mutex q6_proxy_clk_vote_mutex;