From 4c7c6e00f17365633638848197c44552dd353d49 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 27 Jul 2010 13:01:07 -0700 Subject: [PATCH] libertas: convert register access to direct commands Signed-off-by: Dan Williams Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/cmd.c | 130 ++++++++++++------------ drivers/net/wireless/libertas/cmd.h | 4 + drivers/net/wireless/libertas/cmdresp.c | 48 --------- drivers/net/wireless/libertas/debugfs.c | 67 ++++-------- drivers/net/wireless/libertas/dev.h | 1 - drivers/net/wireless/libertas/host.h | 24 ++--- 6 files changed, 94 insertions(+), 180 deletions(-) diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c index a09ee6b0a552..b8df1fd89240 100644 --- a/drivers/net/wireless/libertas/cmd.c +++ b/drivers/net/wireless/libertas/cmd.c @@ -848,78 +848,86 @@ int lbs_set_11d_domain_info(struct lbs_private *priv, return ret; } -static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr, - u8 cmd_action, void *pdata_buf) +/** + * @brief Read a MAC, Baseband, or RF register + * + * @param priv pointer to struct lbs_private + * @param cmd register command, one of CMD_MAC_REG_ACCESS, + * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS + * @param offset byte offset of the register to get + * @param value on success, the value of the register at 'offset' + * + * @return 0 on success, error code on failure +*/ +int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value) { - struct lbs_offset_value *offval; + struct cmd_ds_reg_access cmd; + int ret = 0; lbs_deb_enter(LBS_DEB_CMD); - offval = (struct lbs_offset_value *)pdata_buf; - - switch (le16_to_cpu(cmdptr->command)) { - case CMD_MAC_REG_ACCESS: - { - struct cmd_ds_mac_reg_access *macreg; - - cmdptr->size = - cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access) - + sizeof(struct cmd_header)); - macreg = - (struct cmd_ds_mac_reg_access *)&cmdptr->params. - macreg; - - macreg->action = cpu_to_le16(cmd_action); - macreg->offset = cpu_to_le16((u16) offval->offset); - macreg->value = cpu_to_le32(offval->value); - - break; - } - - case CMD_BBP_REG_ACCESS: - { - struct cmd_ds_bbp_reg_access *bbpreg; + BUG_ON(value == NULL); - cmdptr->size = - cpu_to_le16(sizeof - (struct cmd_ds_bbp_reg_access) - + sizeof(struct cmd_header)); - bbpreg = - (struct cmd_ds_bbp_reg_access *)&cmdptr->params. - bbpreg; + memset(&cmd, 0, sizeof(cmd)); + cmd.hdr.size = cpu_to_le16(sizeof(cmd)); + cmd.action = cpu_to_le16(CMD_ACT_GET); - bbpreg->action = cpu_to_le16(cmd_action); - bbpreg->offset = cpu_to_le16((u16) offval->offset); - bbpreg->value = (u8) offval->value; + if (reg != CMD_MAC_REG_ACCESS && + reg != CMD_BBP_REG_ACCESS && + reg != CMD_RF_REG_ACCESS) { + ret = -EINVAL; + goto out; + } - break; - } + ret = lbs_cmd_with_response(priv, reg, &cmd); + if (ret) { + if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS) + *value = cmd.value.bbp_rf; + else if (reg == CMD_MAC_REG_ACCESS) + *value = le32_to_cpu(cmd.value.mac); + } - case CMD_RF_REG_ACCESS: - { - struct cmd_ds_rf_reg_access *rfreg; +out: + lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); + return ret; +} - cmdptr->size = - cpu_to_le16(sizeof - (struct cmd_ds_rf_reg_access) + - sizeof(struct cmd_header)); - rfreg = - (struct cmd_ds_rf_reg_access *)&cmdptr->params. - rfreg; +/** + * @brief Write a MAC, Baseband, or RF register + * + * @param priv pointer to struct lbs_private + * @param cmd register command, one of CMD_MAC_REG_ACCESS, + * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS + * @param offset byte offset of the register to set + * @param value the value to write to the register at 'offset' + * + * @return 0 on success, error code on failure +*/ +int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value) +{ + struct cmd_ds_reg_access cmd; + int ret = 0; - rfreg->action = cpu_to_le16(cmd_action); - rfreg->offset = cpu_to_le16((u16) offval->offset); - rfreg->value = (u8) offval->value; + lbs_deb_enter(LBS_DEB_CMD); - break; - } + memset(&cmd, 0, sizeof(cmd)); + cmd.hdr.size = cpu_to_le16(sizeof(cmd)); + cmd.action = cpu_to_le16(CMD_ACT_SET); - default: - break; + if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS) + cmd.value.bbp_rf = (u8) (value & 0xFF); + else if (reg == CMD_MAC_REG_ACCESS) + cmd.value.mac = cpu_to_le32(value); + else { + ret = -EINVAL; + goto out; } - lbs_deb_leave(LBS_DEB_CMD); - return 0; + ret = lbs_cmd_with_response(priv, reg, &cmd); + +out: + lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); + return ret; } static void lbs_queue_cmd(struct lbs_private *priv, @@ -1198,12 +1206,6 @@ int lbs_prepare_and_send_command(struct lbs_private *priv, ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action); break; - case CMD_MAC_REG_ACCESS: - case CMD_BBP_REG_ACCESS: - case CMD_RF_REG_ACCESS: - ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf); - break; - #ifdef CONFIG_LIBERTAS_MESH case CMD_BT_ACCESS: diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h index 2c24c1978e82..bfb36904fd9f 100644 --- a/drivers/net/wireless/libertas/cmd.h +++ b/drivers/net/wireless/libertas/cmd.h @@ -139,4 +139,8 @@ int lbs_set_11d_domain_info(struct lbs_private *priv, struct regulatory_request *request, struct ieee80211_supported_band **bands); +int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value); + +int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value); + #endif /* _LBS_CMD_H */ diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c index 6196e54125c6..810d75882e79 100644 --- a/drivers/net/wireless/libertas/cmdresp.c +++ b/drivers/net/wireless/libertas/cmdresp.c @@ -54,48 +54,6 @@ void lbs_mac_event_disconnected(struct lbs_private *priv) lbs_deb_leave(LBS_DEB_ASSOC); } -static int lbs_ret_reg_access(struct lbs_private *priv, - u16 type, struct cmd_ds_command *resp) -{ - int ret = 0; - - lbs_deb_enter(LBS_DEB_CMD); - - switch (type) { - case CMD_RET(CMD_MAC_REG_ACCESS): - { - struct cmd_ds_mac_reg_access *reg = &resp->params.macreg; - - priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset); - priv->offsetvalue.value = le32_to_cpu(reg->value); - break; - } - - case CMD_RET(CMD_BBP_REG_ACCESS): - { - struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg; - - priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset); - priv->offsetvalue.value = reg->value; - break; - } - - case CMD_RET(CMD_RF_REG_ACCESS): - { - struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg; - - priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset); - priv->offsetvalue.value = reg->value; - break; - } - - default: - ret = -1; - } - - lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); - return ret; -} static inline int handle_cmd_response(struct lbs_private *priv, struct cmd_header *cmd_response) { @@ -107,12 +65,6 @@ static inline int handle_cmd_response(struct lbs_private *priv, lbs_deb_enter(LBS_DEB_HOST); switch (respcmd) { - case CMD_RET(CMD_MAC_REG_ACCESS): - case CMD_RET(CMD_BBP_REG_ACCESS): - case CMD_RET(CMD_RF_REG_ACCESS): - ret = lbs_ret_reg_access(priv, respcmd, resp); - break; - case CMD_RET(CMD_802_11_BEACON_STOP): break; diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c index 3db621b18a2f..651a79c8de8a 100644 --- a/drivers/net/wireless/libertas/debugfs.c +++ b/drivers/net/wireless/libertas/debugfs.c @@ -446,30 +446,24 @@ static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf, } - static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct lbs_private *priv = file->private_data; - struct lbs_offset_value offval; ssize_t pos = 0; int ret; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; + u32 val = 0; + if (!buf) return -ENOMEM; - offval.offset = priv->mac_offset; - offval.value = 0; - - ret = lbs_prepare_and_send_command(priv, - CMD_MAC_REG_ACCESS, 0, - CMD_OPTION_WAITFORRSP, 0, &offval); + ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val); mdelay(10); if (!ret) { - pos += snprintf(buf+pos, len-pos, "MAC[0x%x] = 0x%08x\n", - priv->mac_offset, priv->offsetvalue.value); - + pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n", + priv->mac_offset, val); ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); } free_page(addr); @@ -507,7 +501,6 @@ static ssize_t lbs_wrmac_write(struct file *file, struct lbs_private *priv = file->private_data; ssize_t res, buf_size; u32 offset, value; - struct lbs_offset_value offval; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; if (!buf) @@ -524,11 +517,7 @@ static ssize_t lbs_wrmac_write(struct file *file, goto out_unlock; } - offval.offset = offset; - offval.value = value; - res = lbs_prepare_and_send_command(priv, - CMD_MAC_REG_ACCESS, 1, - CMD_OPTION_WAITFORRSP, 0, &offval); + res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value); mdelay(10); if (!res) @@ -542,25 +531,20 @@ static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct lbs_private *priv = file->private_data; - struct lbs_offset_value offval; ssize_t pos = 0; int ret; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; + u32 val; + if (!buf) return -ENOMEM; - offval.offset = priv->bbp_offset; - offval.value = 0; - - ret = lbs_prepare_and_send_command(priv, - CMD_BBP_REG_ACCESS, 0, - CMD_OPTION_WAITFORRSP, 0, &offval); + ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val); mdelay(10); if (!ret) { - pos += snprintf(buf+pos, len-pos, "BBP[0x%x] = 0x%08x\n", - priv->bbp_offset, priv->offsetvalue.value); - + pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n", + priv->bbp_offset, val); ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); } free_page(addr); @@ -599,7 +583,6 @@ static ssize_t lbs_wrbbp_write(struct file *file, struct lbs_private *priv = file->private_data; ssize_t res, buf_size; u32 offset, value; - struct lbs_offset_value offval; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; if (!buf) @@ -616,11 +599,7 @@ static ssize_t lbs_wrbbp_write(struct file *file, goto out_unlock; } - offval.offset = offset; - offval.value = value; - res = lbs_prepare_and_send_command(priv, - CMD_BBP_REG_ACCESS, 1, - CMD_OPTION_WAITFORRSP, 0, &offval); + res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value); mdelay(10); if (!res) @@ -634,25 +613,20 @@ static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf, size_t count, loff_t *ppos) { struct lbs_private *priv = file->private_data; - struct lbs_offset_value offval; ssize_t pos = 0; int ret; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; + u32 val; + if (!buf) return -ENOMEM; - offval.offset = priv->rf_offset; - offval.value = 0; - - ret = lbs_prepare_and_send_command(priv, - CMD_RF_REG_ACCESS, 0, - CMD_OPTION_WAITFORRSP, 0, &offval); + ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val); mdelay(10); if (!ret) { - pos += snprintf(buf+pos, len-pos, "RF[0x%x] = 0x%08x\n", - priv->rf_offset, priv->offsetvalue.value); - + pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n", + priv->rf_offset, val); ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos); } free_page(addr); @@ -691,7 +665,6 @@ static ssize_t lbs_wrrf_write(struct file *file, struct lbs_private *priv = file->private_data; ssize_t res, buf_size; u32 offset, value; - struct lbs_offset_value offval; unsigned long addr = get_zeroed_page(GFP_KERNEL); char *buf = (char *)addr; if (!buf) @@ -708,11 +681,7 @@ static ssize_t lbs_wrrf_write(struct file *file, goto out_unlock; } - offval.offset = offset; - offval.value = value; - res = lbs_prepare_and_send_command(priv, - CMD_RF_REG_ACCESS, 1, - CMD_OPTION_WAITFORRSP, 0, &offval); + res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value); mdelay(10); if (!res) diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h index be263acf19c4..556a9c33a4a6 100644 --- a/drivers/net/wireless/libertas/dev.h +++ b/drivers/net/wireless/libertas/dev.h @@ -64,7 +64,6 @@ struct lbs_private { u32 mac_offset; u32 bbp_offset; u32 rf_offset; - struct lbs_offset_value offsetvalue; /* Power management */ u16 psmode; diff --git a/drivers/net/wireless/libertas/host.h b/drivers/net/wireless/libertas/host.h index d0402aa3f30a..0a4ddc1cdd6c 100644 --- a/drivers/net/wireless/libertas/host.h +++ b/drivers/net/wireless/libertas/host.h @@ -567,24 +567,15 @@ struct cmd_ds_802_11_snmp_mib { u8 value[128]; } __packed; -struct cmd_ds_mac_reg_access { - __le16 action; - __le16 offset; - __le32 value; -} __packed; - -struct cmd_ds_bbp_reg_access { - __le16 action; - __le16 offset; - u8 value; - u8 reserved[3]; -} __packed; +struct cmd_ds_reg_access { + struct cmd_header hdr; -struct cmd_ds_rf_reg_access { __le16 action; __le16 offset; - u8 value; - u8 reserved[3]; + union { + u8 bbp_rf; /* for BBP and RF registers */ + __le32 mac; /* for MAC registers */ + } value; } __packed; struct cmd_ds_802_11_radio_control { @@ -968,9 +959,6 @@ struct cmd_ds_command { /* command Body */ union { struct cmd_ds_802_11_ps_mode psmode; - struct cmd_ds_mac_reg_access macreg; - struct cmd_ds_bbp_reg_access bbpreg; - struct cmd_ds_rf_reg_access rfreg; struct cmd_ds_bt_access bt; struct cmd_ds_fwt_access fwt; } params; -- 2.30.2