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Commit 87f825e6 authored by Eyal Ilsar's avatar Eyal Ilsar Committed by Kalle Valo
Browse files

wcn36xx: Add support for Factory Test Mode (FTM) 



Introduce infrastructure for supporting Factory Test Mode (FTM) of the
wireless LAN subsystem. In order for the user space to access the
firmware in test mode the relevant netlink channel needs to be exposed
from the kernel driver.

The above is achieved as follows:
1) Register wcn36xx driver to testmode callback from netlink
2) Add testmode callback implementation to handle incoming FTM commands
3) Add FTM command packet structure
4) Add handling for GET_BUILD_RELEASE_NUMBER (msgid=0x32A2)
5) Add generic handling for all PTT_MSG packets

Signed-off-by: default avatarEyal Ilsar <eilsar@codeaurora.org>
Signed-off-by: default avatarRamon Fried <ramon.fried@linaro.org>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent 6f6eb1bc

drivers/net/wireless/ath/wcn36xx/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -6,3 +6,5 @@ wcn36xx-y += main.o \ 
               smd.o \

               pmc.o \

               debug.o



wcn36xx-$(CONFIG_NL80211_TESTMODE) += testmode.o

drivers/net/wireless/ath/wcn36xx/hal.h

+16 −0
Original line number Diff line number Diff line
@@ -2236,6 +2236,22 @@ struct wcn36xx_hal_switch_channel_rsp_msg { 


} __packed;



struct wcn36xx_hal_process_ptt_msg_req_msg {

	struct wcn36xx_hal_msg_header header;



	/* Actual FTM Command body */

	u8 ptt_msg[0];

} __packed;



struct wcn36xx_hal_process_ptt_msg_rsp_msg {

	struct wcn36xx_hal_msg_header header;



	/* FTM Command response status */

	u32 ptt_msg_resp_status;

	/* Actual FTM Command body */

	u8 ptt_msg[0];

} __packed;



struct update_edca_params_req_msg {

	struct wcn36xx_hal_msg_header header;

drivers/net/wireless/ath/wcn36xx/main.c

+3 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <linux/soc/qcom/smem_state.h>

#include <linux/soc/qcom/wcnss_ctrl.h>

#include "wcn36xx.h"

#include "testmode.h"



unsigned int wcn36xx_dbg_mask;

module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
@@ -1146,6 +1147,8 @@ static const struct ieee80211_ops wcn36xx_ops = { 
	.sta_add		= wcn36xx_sta_add,

	.sta_remove		= wcn36xx_sta_remove,

	.ampdu_action		= wcn36xx_ampdu_action,



	CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)

};



static int wcn36xx_init_ieee80211(struct wcn36xx *wcn)

drivers/net/wireless/ath/wcn36xx/smd.c

+81 −0
Original line number Diff line number Diff line
@@ -298,12 +298,26 @@ static void init_hal_msg(struct wcn36xx_hal_msg_header *hdr, 
		msg_body.header.len = sizeof(msg_body);			\

	} while (0)							\



#define INIT_HAL_PTT_MSG(p_msg_body, ppt_msg_len) \

	do { \

		memset(p_msg_body, 0, sizeof(*p_msg_body) + ppt_msg_len); \

		p_msg_body->header.msg_type = WCN36XX_HAL_PROCESS_PTT_REQ; \

		p_msg_body->header.msg_version = WCN36XX_HAL_MSG_VERSION0; \

		p_msg_body->header.len = sizeof(*p_msg_body) + ppt_msg_len; \

	} while (0)



#define PREPARE_HAL_BUF(send_buf, msg_body) \

	do {							\

		memset(send_buf, 0, msg_body.header.len);	\

		memcpy(send_buf, &msg_body, sizeof(msg_body));	\

	} while (0)						\



#define PREPARE_HAL_PTT_MSG_BUF(send_buf, p_msg_body) \

	do {							\

		memset(send_buf, 0, p_msg_body->header.len); \

		memcpy(send_buf, p_msg_body, p_msg_body->header.len); \

	} while (0)



static int wcn36xx_smd_rsp_status_check(void *buf, size_t len)

{

	struct wcn36xx_fw_msg_status_rsp *rsp;
@@ -760,6 +774,71 @@ int wcn36xx_smd_switch_channel(struct wcn36xx *wcn, 
	return ret;

}



static int wcn36xx_smd_process_ptt_msg_rsp(void *buf, size_t len,

					   void **p_ptt_rsp_msg)

{

	struct wcn36xx_hal_process_ptt_msg_rsp_msg *rsp;

	int ret;



	ret = wcn36xx_smd_rsp_status_check(buf, len);

	if (ret)

		return ret;



	rsp = (struct wcn36xx_hal_process_ptt_msg_rsp_msg *)buf;



	wcn36xx_dbg(WCN36XX_DBG_HAL, "process ptt msg responded with length %d\n",

		    rsp->header.len);

	wcn36xx_dbg_dump(WCN36XX_DBG_HAL_DUMP, "HAL_PTT_MSG_RSP:", rsp->ptt_msg,

			 rsp->header.len - sizeof(rsp->ptt_msg_resp_status));



	if (rsp->header.len > 0) {

		*p_ptt_rsp_msg = kmalloc(rsp->header.len, GFP_ATOMIC);

		if (!*p_ptt_rsp_msg)

			return -ENOMEM;

		memcpy(*p_ptt_rsp_msg, rsp->ptt_msg, rsp->header.len);

	}

	return ret;

}



int wcn36xx_smd_process_ptt_msg(struct wcn36xx *wcn,

				struct ieee80211_vif *vif, void *ptt_msg, size_t len,

		void **ptt_rsp_msg)

{

	struct wcn36xx_hal_process_ptt_msg_req_msg *p_msg_body;

	int ret;



	mutex_lock(&wcn->hal_mutex);

	p_msg_body = kmalloc(

		sizeof(struct wcn36xx_hal_process_ptt_msg_req_msg) + len,

		GFP_ATOMIC);

	if (!p_msg_body) {

		ret = -ENOMEM;

		goto out_nomem;

	}

	INIT_HAL_PTT_MSG(p_msg_body, len);



	memcpy(&p_msg_body->ptt_msg, ptt_msg, len);



	PREPARE_HAL_PTT_MSG_BUF(wcn->hal_buf, p_msg_body);



	ret = wcn36xx_smd_send_and_wait(wcn, p_msg_body->header.len);

	if (ret) {

		wcn36xx_err("Sending hal_process_ptt_msg failed\n");

		goto out;

	}

	ret = wcn36xx_smd_process_ptt_msg_rsp(wcn->hal_buf, wcn->hal_rsp_len,

					      ptt_rsp_msg);

	if (ret) {

		wcn36xx_err("process_ptt_msg response failed err=%d\n", ret);

		goto out;

	}

out:

	kfree(p_msg_body);

out_nomem:

	mutex_unlock(&wcn->hal_mutex);

	return ret;

}



static int wcn36xx_smd_update_scan_params_rsp(void *buf, size_t len)

{

	struct wcn36xx_hal_update_scan_params_resp *rsp;
@@ -2396,6 +2475,7 @@ int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev, 
	case WCN36XX_HAL_JOIN_RSP:

	case WCN36XX_HAL_UPDATE_SCAN_PARAM_RSP:

	case WCN36XX_HAL_CH_SWITCH_RSP:

	case WCN36XX_HAL_PROCESS_PTT_RSP:

	case WCN36XX_HAL_FEATURE_CAPS_EXCHANGE_RSP:

	case WCN36XX_HAL_8023_MULTICAST_LIST_RSP:

	case WCN36XX_HAL_START_SCAN_OFFLOAD_RSP:
@@ -2436,6 +2516,7 @@ int wcn36xx_smd_rsp_process(struct rpmsg_device *rpdev, 


	return 0;

}



static void wcn36xx_ind_smd_work(struct work_struct *work)

{

	struct wcn36xx *wcn =

drivers/net/wireless/ath/wcn36xx/smd.h

+4 −0
Original line number Diff line number Diff line
@@ -86,6 +86,10 @@ int wcn36xx_smd_send_beacon(struct wcn36xx *wcn, struct ieee80211_vif *vif, 
			    u16 p2p_off);

int wcn36xx_smd_switch_channel(struct wcn36xx *wcn,

			       struct ieee80211_vif *vif, int ch);

int wcn36xx_smd_process_ptt_msg(struct wcn36xx *wcn,

				struct ieee80211_vif *vif,

				void *ptt_msg, size_t len,

				void **ptt_rsp_msg);

int wcn36xx_smd_update_proberesp_tmpl(struct wcn36xx *wcn,

				      struct ieee80211_vif *vif,

				      struct sk_buff *skb);