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Commit 3ed62916 authored by Michael Adisumarta's avatar Michael Adisumarta
Browse files

ipa: msm: printing rp wp values if channel stop fails 



Dumping rp and wp of the channel, if it fails to reset/stop.

Change-Id: Ie0ebec5ec2cc6be987fdbb0548a911d530da75fd
Acked-by: default avatarSuhas Mallesh <smallesh@qti.qualcomm.com>
Signed-off-by: default avatarMichael Adisumarta <madisuma@codeaurora.org>
parent d267b6d1

drivers/platform/msm/gsi/gsi.c

+45 −2
Original line number Diff line number Diff line
@@ -113,6 +113,39 @@ static void __gsi_config_gen_irq(int ee, uint32_t mask, uint32_t val) 
			GSI_EE_n_CNTXT_GSI_IRQ_EN_OFFS(ee));

}



static void gsi_get_rp_wp(unsigned long chan_hdl,

	uint32_t *rp, uint32_t *wp)

{

	struct gsi_chan_ctx *ctx;

	int ee;



	if (!gsi_ctx) {

		pr_err("%s:%d gsi context not allocated\n", __func__, __LINE__);

		return;

	}



	if (chan_hdl >= gsi_ctx->max_ch) {

		GSIERR("bad params, can't read rp and wp");

		return;

	}



	ctx = &gsi_ctx->chan[chan_hdl];

	ee = gsi_ctx->per.ee;

	if (ctx->props.prot == GSI_CHAN_PROT_WDI3) {

		*rp = gsi_readl(gsi_ctx->base +

			GSI_EE_n_GSI_CH_k_RE_FETCH_READ_PTR_OFFS(chan_hdl,

				gsi_ctx->per.ee));

		*wp = gsi_readl(gsi_ctx->base +

			GSI_EE_n_GSI_CH_k_RE_FETCH_WRITE_PTR_OFFS(chan_hdl,

				gsi_ctx->per.ee));

	} else {

		*rp = gsi_readl(gsi_ctx->base +

			GSI_EE_n_GSI_CH_k_CNTXT_4_OFFS(ctx->props.ch_id, ee));

		*wp = gsi_readl(gsi_ctx->base +

			GSI_EE_n_GSI_CH_k_CNTXT_6_OFFS(ctx->props.ch_id, ee));

	}

}



static void gsi_channel_state_change_wait(unsigned long chan_hdl,

	struct gsi_chan_ctx *ctx,

	uint32_t tm, enum gsi_ch_cmd_opcode op)
@@ -126,6 +159,7 @@ static void gsi_channel_state_change_wait(unsigned long chan_hdl, 
	enum gsi_chan_state curr_state = GSI_CHAN_STATE_NOT_ALLOCATED;

	int stop_in_proc_retry = 0;

	int stop_retry = 0;

	uint32_t rp, wp;



	/*

	 * Start polling the GSI channel for
@@ -207,15 +241,24 @@ static void gsi_channel_state_change_wait(unsigned long chan_hdl, 
			return;

		}



		gsi_get_rp_wp(chan_hdl, &rp, &wp);

		GSIDBG("GSI wait on chan_hld=%lu irqtyp=%u state=%u intr=%u\n",

			chan_hdl,

			type,

			ctx->state,

			gsi_pending_intr);

		GSIDBG("rp=%u wp=%u\n", rp, wp);

	}



	GSIDBG("invalidating the channel state when timeout happens\n");

	ctx->state = curr_state;

	val = gsi_readl(gsi_ctx->base +

			GSI_EE_n_GSI_CH_k_CNTXT_0_OFFS(chan_hdl,

				gsi_ctx->per.ee));

	ctx->state = (val &

		GSI_EE_n_GSI_CH_k_CNTXT_0_CHSTATE_BMSK) >>

		GSI_EE_n_GSI_CH_k_CNTXT_0_CHSTATE_SHFT;

	GSIDBG("Channel state change timeout, curr ch_state=%d\n",

		ctx->state);

	GSI_ASSERT();

}



static void gsi_handle_ch_ctrl(int ee)