From 937a50451b0d1d1834485b47f00a7c0295413d09 Mon Sep 17 00:00:00 2001 From: Xinming Hu Date: Thu, 19 Jun 2014 21:38:56 -0700 Subject: [PATCH] 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: Xinming Hu Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/README | 30 ++++++++ drivers/net/wireless/mwifiex/debugfs.c | 93 ++++++++++++++++++++++++ drivers/net/wireless/mwifiex/main.h | 2 + drivers/net/wireless/mwifiex/sta_ioctl.c | 4 +- 4 files changed, 127 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mwifiex/README b/drivers/net/wireless/mwifiex/README index 3b55ce5690a5..831a98fdeda8 100644 --- a/drivers/net/wireless/mwifiex/README +++ b/drivers/net/wireless/mwifiex/README @@ -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 " [GPIO# [gap]]]" > hscfg + cat hscfg + + where the parameters are, + : 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: diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c index 7b419bbcd544..6a194a996836 100644 --- a/drivers/net/wireless/mwifiex/debugfs.c +++ b/drivers/net/wireless/mwifiex/debugfs.c @@ -692,6 +692,97 @@ done: 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); } /* diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index 582a9f9fee93..5e734f948b07 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -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, diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c index 229526356d9b..6b9395f37742 100644 --- a/drivers/net/wireless/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/mwifiex/sta_ioctl.c @@ -389,8 +389,8 @@ done: * This function prepares the correct firmware command and * issues it. */ -static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action, - int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg) +int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action, + int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg) { struct mwifiex_adapter *adapter = priv->adapter; -- 2.20.1