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Commit 937a5045 authored by Xinming Hu's avatar Xinming Hu Committed by John W. Linville
Browse files

mwifiex: add hscfg to debugfs 



Some SDIO controllers do not support MMC_PM_KEEP_POWER properly.
To test host sleep feature without putting the system into sleep
we need to simulate host sleep configuration & handshake between
driver and firmware using customized parameters.
This patch adds hscfg debugfs item, with which user could change
host sleep parameters for debugging.

Signed-off-by: default avatarXinming Hu <huxm@marvell.com>
Signed-off-by: default avatarBing Zhao <bzhao@marvell.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 54881c6b

drivers/net/wireless/mwifiex/README

+30 −0
Original line number Diff line number Diff line
@@ -194,6 +194,36 @@ rdeeprom 
	Example:

		echo "0 20" > rdeeprom      : Read 20 bytes of EEPROM data from offset 0



hscfg

	This command is used to debug/simulate host sleep feature using

	different configuration parameters.



	Usage:

		echo "<condition> [GPIO# [gap]]]" > hscfg

		cat hscfg



	where the parameters are,

		<condition>: bit 0 = 1   -- broadcast data

			     bit 1 = 1   -- unicast data

			     bit 2 = 1   -- mac event

			     bit 3 = 1   -- multicast data

		[GPIO#]: pin number of GPIO used to wakeup the host.

			 GPIO pin# (e.g. 0-7) or 0xff (interface, e.g. SDIO

			 will be used instead).

		[gap]:   the gap in milliseconds between wakeup signal and

			 wakeup event or 0xff for special setting (host

			 acknowledge required) when GPIO is used to wakeup host.



	Examples:

		echo "-1" > hscfg        : Cancel host sleep mode

		echo "3" > hscfg         : Broadcast and unicast data;

					   Use GPIO and gap set previously

		echo "2 3" > hscfg       : Unicast data and GPIO 3;

					   Use gap set previously

		echo "2 1 160" > hscfg   : Unicast data, GPIO 1 and gap 160 ms

		echo "2 1 0xff" > hscfg  : Unicast data, GPIO 1; Wait for host

					   to ack before sending wakeup event



getlog

        This command is used to get the statistics available in the station.

	Usage:

drivers/net/wireless/mwifiex/debugfs.c

+93 −0
Original line number Diff line number Diff line
@@ -692,6 +692,97 @@ mwifiex_rdeeprom_read(struct file *file, char __user *ubuf, 
	return ret;

}



/* Proc hscfg file write handler

 * This function can be used to configure the host sleep parameters.

 */

static ssize_t

mwifiex_hscfg_write(struct file *file, const char __user *ubuf,

		    size_t count, loff_t *ppos)

{

	struct mwifiex_private *priv = (void *)file->private_data;

	unsigned long addr = get_zeroed_page(GFP_KERNEL);

	char *buf = (char *)addr;

	size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);

	int ret, arg_num;

	struct mwifiex_ds_hs_cfg hscfg;

	int conditions = HS_CFG_COND_DEF;

	u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;



	if (!buf)

		return -ENOMEM;



	if (copy_from_user(buf, ubuf, buf_size)) {

		ret = -EFAULT;

		goto done;

	}



	arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);



	memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));



	if (arg_num > 3) {

		dev_err(priv->adapter->dev, "Too many arguments\n");

		ret = -EINVAL;

		goto done;

	}



	if (arg_num >= 1 && arg_num < 3)

		mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,

				      MWIFIEX_SYNC_CMD, &hscfg);



	if (arg_num) {

		if (conditions == HS_CFG_CANCEL) {

			mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);

			ret = count;

			goto done;

		}

		hscfg.conditions = conditions;

	}

	if (arg_num >= 2)

		hscfg.gpio = gpio;

	if (arg_num == 3)

		hscfg.gap = gap;



	hscfg.is_invoke_hostcmd = false;

	mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,

			      MWIFIEX_SYNC_CMD, &hscfg);



	mwifiex_enable_hs(priv->adapter);

	priv->adapter->hs_enabling = false;

	ret = count;

done:

	free_page(addr);

	return ret;

}



/* Proc hscfg file read handler

 * This function can be used to read host sleep configuration

 * parameters from driver.

 */

static ssize_t

mwifiex_hscfg_read(struct file *file, char __user *ubuf,

		   size_t count, loff_t *ppos)

{

	struct mwifiex_private *priv = (void *)file->private_data;

	unsigned long addr = get_zeroed_page(GFP_KERNEL);

	char *buf = (char *)addr;

	int pos, ret;

	struct mwifiex_ds_hs_cfg hscfg;



	if (!buf)

		return -ENOMEM;



	mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,

			      MWIFIEX_SYNC_CMD, &hscfg);



	pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,

		       hscfg.gpio, hscfg.gap);



	ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);



	free_page(addr);

	return ret;

}



#define MWIFIEX_DFS_ADD_FILE(name) do {                                 \

	if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir,        \
@@ -725,6 +816,7 @@ MWIFIEX_DFS_FILE_READ_OPS(getlog); 
MWIFIEX_DFS_FILE_READ_OPS(fw_dump);

MWIFIEX_DFS_FILE_OPS(regrdwr);

MWIFIEX_DFS_FILE_OPS(rdeeprom);

MWIFIEX_DFS_FILE_OPS(hscfg);



/*

 * This function creates the debug FS directory structure and the files.
@@ -747,6 +839,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv) 
	MWIFIEX_DFS_ADD_FILE(regrdwr);

	MWIFIEX_DFS_ADD_FILE(rdeeprom);

	MWIFIEX_DFS_ADD_FILE(fw_dump);

	MWIFIEX_DFS_ADD_FILE(hscfg);

}



/*

drivers/net/wireless/mwifiex/main.h

+2 −0
Original line number Diff line number Diff line
@@ -920,6 +920,8 @@ int mwifiex_ret_enh_power_mode(struct mwifiex_private *priv, 
void mwifiex_process_hs_config(struct mwifiex_adapter *adapter);

void mwifiex_hs_activated_event(struct mwifiex_private *priv,

					u8 activated);

int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,

			  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg);

int mwifiex_ret_802_11_hs_cfg(struct mwifiex_private *priv,

			      struct host_cmd_ds_command *resp);

int mwifiex_process_rx_packet(struct mwifiex_private *priv,

drivers/net/wireless/mwifiex/sta_ioctl.c

+2 −2
Original line number Diff line number Diff line
@@ -389,7 +389,7 @@ int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss, 
 * This function prepares the correct firmware command and

 * issues it.

 */

static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,

int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,

			  int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)



{