Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit f65ebd88 authored by Sara Sharon's avatar Sara Sharon Committed by Luca Coelho
Browse files

iwlwifi: add dump of RFH 



Add support of dumping new RFH instead of FH registers.

Signed-off-by: default avatarSara Sharon <sara.sharon@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
parent e160f635

drivers/net/wireless/intel/iwlwifi/iwl-io.c

+113 −2
Original line number Diff line number Diff line 
/******************************************************************************

 *

 * Copyright(c) 2003 - 2014 Intel Corporation. All rights reserved.

 * Copyright(c) 2015 Intel Deutschland GmbH

 * Copyright(c) 2015 - 2016 Intel Deutschland GmbH

 *

 * Portions of this file are derived from the ipw3945 project.

 *
@@ -228,9 +228,117 @@ void iwl_force_nmi(struct iwl_trans *trans) 
}

IWL_EXPORT_SYMBOL(iwl_force_nmi);



static const char *get_fh_string(int cmd)

static const char *get_rfh_string(int cmd)

{

#define IWL_CMD(x) case x: return #x

#define IWL_CMD_MQ(arg, reg, q) { if (arg == reg(q)) return #reg; }



	int i;



	for (i = 0; i < IWL_MAX_RX_HW_QUEUES; i++) {

		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_BA_LSB, i);

		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_WIDX, i);

		IWL_CMD_MQ(cmd, RFH_Q_FRBDCB_RIDX, i);

		IWL_CMD_MQ(cmd, RFH_Q_URBD_STTS_WPTR_LSB, i);

	};



	switch (cmd) {

	IWL_CMD(RFH_RXF_DMA_CFG);

	IWL_CMD(RFH_GEN_CFG);

	IWL_CMD(RFH_GEN_STATUS);

	IWL_CMD(FH_TSSR_TX_STATUS_REG);

	IWL_CMD(FH_TSSR_TX_ERROR_REG);

	default:

		return "UNKNOWN";

	}

#undef IWL_CMD_MQ

}



struct reg {

	u32 addr;

	bool is64;

};



static int iwl_dump_rfh(struct iwl_trans *trans, char **buf)

{

	int i, q;

	int num_q = trans->num_rx_queues;

	static const u32 rfh_tbl[] = {

		RFH_RXF_DMA_CFG,

		RFH_GEN_CFG,

		RFH_GEN_STATUS,

		FH_TSSR_TX_STATUS_REG,

		FH_TSSR_TX_ERROR_REG,

	};

	static const struct reg rfh_mq_tbl[] = {

		{ RFH_Q0_FRBDCB_BA_LSB, true },

		{ RFH_Q0_FRBDCB_WIDX, false },

		{ RFH_Q0_FRBDCB_RIDX, false },

		{ RFH_Q0_URBD_STTS_WPTR_LSB, true },

	};



#ifdef CONFIG_IWLWIFI_DEBUGFS

	if (buf) {

		int pos = 0;

		/*

		 * Register (up to 34 for name + 8 blank/q for MQ): 40 chars

		 * Colon + space: 2 characters

		 * 0X%08x: 10 characters

		 * New line: 1 character

		 * Total of 53 characters

		 */

		size_t bufsz = ARRAY_SIZE(rfh_tbl) * 53 +

			       ARRAY_SIZE(rfh_mq_tbl) * 53 * num_q + 40;



		*buf = kmalloc(bufsz, GFP_KERNEL);

		if (!*buf)

			return -ENOMEM;



		pos += scnprintf(*buf + pos, bufsz - pos,

				"RFH register values:\n");



		for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)

			pos += scnprintf(*buf + pos, bufsz - pos,

				"%40s: 0X%08x\n",

				get_rfh_string(rfh_tbl[i]),

				iwl_read_prph(trans, rfh_tbl[i]));



		for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)

			for (q = 0; q < num_q; q++) {

				u32 addr = rfh_mq_tbl[i].addr;



				addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);

				pos += scnprintf(*buf + pos, bufsz - pos,

					"%34s(q %2d): 0X%08x\n",

					get_rfh_string(addr), q,

					iwl_read_prph(trans, addr));

			}



		return pos;

	}

#endif



	IWL_ERR(trans, "RFH register values:\n");

	for (i = 0; i < ARRAY_SIZE(rfh_tbl); i++)

		IWL_ERR(trans, "  %34s: 0X%08x\n",

			get_rfh_string(rfh_tbl[i]),

			iwl_read_prph(trans, rfh_tbl[i]));



	for (i = 0; i < ARRAY_SIZE(rfh_mq_tbl); i++)

		for (q = 0; q < num_q; q++) {

			u32 addr = rfh_mq_tbl[i].addr;



			addr += q * (rfh_mq_tbl[i].is64 ? 8 : 4);

			IWL_ERR(trans, "  %34s(q %d): 0X%08x\n",

				get_rfh_string(addr), q,

				iwl_read_prph(trans, addr));

		}



	return 0;

}



static const char *get_fh_string(int cmd)

{

	switch (cmd) {

	IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);

	IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
@@ -262,6 +370,9 @@ int iwl_dump_fh(struct iwl_trans *trans, char **buf) 
		FH_TSSR_TX_ERROR_REG

	};



	if (trans->cfg->mq_rx_supported)

		return iwl_dump_rfh(trans, buf);



#ifdef CONFIG_IWLWIFI_DEBUGFS

	if (buf) {

		int pos = 0;