libertas: convert CMD_802_11_EEPROM_ACCESS to a direct command

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/libertas/cmd.c

@@ -953,27 +953,6 @@ static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr,
 	return 0;
 }
 
-static int lbs_cmd_802_11_eeprom_access(struct cmd_ds_command *cmd,
-					void *pdata_buf)
-{
-	struct lbs_ioctl_regrdwr *ea = pdata_buf;
-
-	lbs_deb_enter(LBS_DEB_CMD);
-
-	cmd->command = cpu_to_le16(CMD_802_11_EEPROM_ACCESS);
-	cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_eeprom_access) +
-				S_DS_GEN);
-	cmd->result = 0;
-
-	cmd->params.rdeeprom.action = cpu_to_le16(ea->action);
-	cmd->params.rdeeprom.offset = cpu_to_le16(ea->offset);
-	cmd->params.rdeeprom.bytecount = cpu_to_le16(ea->NOB);
-	cmd->params.rdeeprom.value = 0;
-
-	lbs_deb_leave(LBS_DEB_CMD);
-	return 0;
-}
-
 static int lbs_cmd_bt_access(struct cmd_ds_command *cmd,
 			       u16 cmd_action, void *pdata_buf)
 {
@@ -1412,10 +1391,6 @@ int lbs_prepare_and_send_command(struct lbs_private *priv,
 		ret = lbs_cmd_80211_ad_hoc_stop(cmdptr);
 		break;
 
-	case CMD_802_11_EEPROM_ACCESS:
-		ret = lbs_cmd_802_11_eeprom_access(cmdptr, pdata_buf);
-		break;
-
 	case CMD_802_11_SET_AFC:
 	case CMD_802_11_GET_AFC:
 

drivers/net/wireless/libertas/cmdresp.c

@@ -249,31 +249,6 @@ static int lbs_ret_802_11_rssi(struct lbs_private *priv,
 	return 0;
 }
 
-static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
-				  struct cmd_ds_command *resp)
-{
-	struct lbs_ioctl_regrdwr *pbuf;
-	pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
-
-	lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
-	       le16_to_cpu(resp->params.rdeeprom.bytecount));
-	if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
-		pbuf->NOB = 0;
-		lbs_deb_cmd("EEPROM read length too big\n");
-		return -1;
-	}
-	pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
-	if (pbuf->NOB > 0) {
-
-		memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
-		       le16_to_cpu(resp->params.rdeeprom.bytecount));
-		lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
-			le16_to_cpu(resp->params.rdeeprom.bytecount));
-	}
-	lbs_deb_leave(LBS_DEB_CMD);
-	return 0;
-}
-
 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 					struct cmd_ds_command *resp)
 {
@@ -359,10 +334,6 @@ static inline int handle_cmd_response(struct lbs_private *priv,
 		ret = lbs_ret_80211_ad_hoc_stop(priv);
 		break;
 
-	case CMD_RET(CMD_802_11_EEPROM_ACCESS):
-		ret = lbs_ret_802_11_eeprom_access(priv, resp);
-		break;
-
 	case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 		ret = lbs_ret_802_11d_domain_info(resp);
 		break;

drivers/net/wireless/libertas/dev.h

@@ -320,7 +320,6 @@ struct lbs_private {
 	u32 enable11d;
 
 	/**	MISCELLANEOUS */
-	u8 *prdeeprom;
 	struct lbs_offset_value offsetvalue;
 
 	u32 monitormode;

drivers/net/wireless/libertas/ethtool.c

@@ -48,61 +48,28 @@ static int lbs_ethtool_get_eeprom(struct net_device *dev,
                                   struct ethtool_eeprom *eeprom, u8 * bytes)
 {
 	struct lbs_private *priv = (struct lbs_private *) dev->priv;
-	struct lbs_ioctl_regrdwr regctrl;
-	char *ptr;
+	struct cmd_ds_802_11_eeprom_access cmd;
 	int ret;
 
-	regctrl.action = 0;
-	regctrl.offset = eeprom->offset;
-	regctrl.NOB = eeprom->len;
-
-	if (eeprom->offset + eeprom->len > LBS_EEPROM_LEN)
-		return -EINVAL;
-
-//      mutex_lock(&priv->mutex);
-
-	priv->prdeeprom = kmalloc(eeprom->len+sizeof(regctrl), GFP_KERNEL);
-	if (!priv->prdeeprom)
-		return -ENOMEM;
-	memcpy(priv->prdeeprom, &regctrl, sizeof(regctrl));
-
-	/* +14 is for action, offset, and NOB in
-	 * response */
-	lbs_deb_ethtool("action:%d offset: %x NOB: %02x\n",
-	       regctrl.action, regctrl.offset, regctrl.NOB);
+	lbs_deb_enter(LBS_DEB_ETHTOOL);
 
-	ret = lbs_prepare_and_send_command(priv,
-				    CMD_802_11_EEPROM_ACCESS,
-				    regctrl.action,
-				    CMD_OPTION_WAITFORRSP, 0,
-				    &regctrl);
-
-	if (ret) {
-		if (priv->prdeeprom)
-			kfree(priv->prdeeprom);
-		goto done;
+	if (eeprom->offset + eeprom->len > LBS_EEPROM_LEN ||
+	    eeprom->len > LBS_EEPROM_READ_LEN) {
+		ret = -EINVAL;
+		goto out;
 	}
 
-	mdelay(10);
-
-	ptr = (char *)priv->prdeeprom;
-
-	/* skip the command header, but include the "value" u32 variable */
-	ptr = ptr + sizeof(struct lbs_ioctl_regrdwr) - 4;
-
-	/*
-	 * Return the result back to the user
-	 */
-	memcpy(bytes, ptr, eeprom->len);
-
-	if (priv->prdeeprom)
-		kfree(priv->prdeeprom);
-//	mutex_unlock(&priv->mutex);
-
-	ret = 0;
-
-done:
-	lbs_deb_enter_args(LBS_DEB_ETHTOOL, "ret %d", ret);
+	cmd.hdr.size = cpu_to_le16(sizeof(struct cmd_ds_802_11_eeprom_access) -
+		LBS_EEPROM_READ_LEN + eeprom->len);
+	cmd.action = cpu_to_le16(CMD_ACT_GET);
+	cmd.offset = cpu_to_le16(eeprom->offset);
+	cmd.len    = cpu_to_le16(eeprom->len);
+	ret = lbs_cmd_with_response(priv, CMD_802_11_EEPROM_ACCESS, &cmd);
+	if (!ret)
+		memcpy(bytes, cmd.value, eeprom->len);
+
+out:
+	lbs_deb_leave_args(LBS_DEB_ETHTOOL, "ret %d", ret);
         return ret;
 }
 

drivers/net/wireless/libertas/hostcmd.h

@@ -588,12 +588,13 @@ struct cmd_ds_802_11_key_material {
 } __attribute__ ((packed));
 
 struct cmd_ds_802_11_eeprom_access {
+	struct cmd_header hdr;
 	__le16 action;
-
-	/* multiple 4 */
 	__le16 offset;
-	__le16 bytecount;
-	u8 value;
+	__le16 len;
+	/* firmware says it returns a maximum of 20 bytes */
+#define LBS_EEPROM_READ_LEN 20
+	u8 value[LBS_EEPROM_READ_LEN];
 } __attribute__ ((packed));
 
 struct cmd_ds_802_11_tpc_cfg {
@@ -713,7 +714,6 @@ struct cmd_ds_command {
 		struct cmd_ds_mac_reg_access macreg;
 		struct cmd_ds_bbp_reg_access bbpreg;
 		struct cmd_ds_rf_reg_access rfreg;
-		struct cmd_ds_802_11_eeprom_access rdeeprom;
 
 		struct cmd_ds_802_11d_domain_info domaininfo;
 		struct cmd_ds_802_11d_domain_info domaininforesp;

drivers/net/wireless/libertas/wext.h

@@ -4,17 +4,6 @@
 #ifndef	_LBS_WEXT_H_
 #define	_LBS_WEXT_H_
 
-/** lbs_ioctl_regrdwr */
-struct lbs_ioctl_regrdwr {
-	/** Which register to access */
-	u16 whichreg;
-	/** Read or Write */
-	u16 action;
-	u32 offset;
-	u16 NOB;
-	u32 value;
-};
-
 extern struct iw_handler_def lbs_handler_def;
 extern struct iw_handler_def mesh_handler_def;