wl1271: add testmode support

Testmode will be used to send PLT (Production Line Testing) commands
from user space.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 283 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271_testmode.c b/drivers/net/wireless/wl12xx/wl1271_testmode.c
new file mode 100644
index 000000000000..3919102e942e
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/wl1271_testmode.c
@@ -0,0 +1,283 @@
+/*
+ * This file is part of wl1271
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * Contact: Luciano Coelho <luciano.coelho@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+#include "wl1271_testmode.h"
+
+#include <net/genetlink.h>
+
+#include "wl1271.h"
+#include "wl1271_spi.h"
+#include "wl1271_acx.h"
+
+#define WL1271_TM_MAX_DATA_LENGTH 1024
+
+enum wl1271_tm_commands {
+        WL1271_TM_CMD_UNSPEC,
+        WL1271_TM_CMD_TEST,
+        WL1271_TM_CMD_INTERROGATE,
+        WL1271_TM_CMD_CONFIGURE,
+        WL1271_TM_CMD_NVS_PUSH,
+        WL1271_TM_CMD_SET_PLT_MODE,
+
+        __WL1271_TM_CMD_AFTER_LAST
+};
+#define WL1271_TM_CMD_MAX (__WL1271_TM_CMD_AFTER_LAST - 1)
+
+enum wl1271_tm_attrs {
+        WL1271_TM_ATTR_UNSPEC,
+        WL1271_TM_ATTR_CMD_ID,
+        WL1271_TM_ATTR_ANSWER,
+        WL1271_TM_ATTR_DATA,
+        WL1271_TM_ATTR_IE_ID,
+        WL1271_TM_ATTR_PLT_MODE,
+
+        __WL1271_TM_ATTR_AFTER_LAST
+};
+#define WL1271_TM_ATTR_MAX (__WL1271_TM_ATTR_AFTER_LAST - 1)
+
+static struct nla_policy wl1271_tm_policy[WL1271_TM_ATTR_MAX + 1] = {
+        [WL1271_TM_ATTR_CMD_ID] =       { .type = NLA_U32 },
+        [WL1271_TM_ATTR_ANSWER] =       { .type = NLA_U8 },
+        [WL1271_TM_ATTR_DATA] =         { .type = NLA_BINARY,
+                                          .len = WL1271_TM_MAX_DATA_LENGTH },
+        [WL1271_TM_ATTR_IE_ID] =        { .type = NLA_U32 },
+        [WL1271_TM_ATTR_PLT_MODE] =     { .type = NLA_U32 },
+};
+
+
+static int wl1271_tm_cmd_test(struct wl1271 *wl, struct nlattr *tb[])
+{
+        int buf_len, ret, len;
+        struct sk_buff *skb;
+        void *buf;
+        u8 answer = 0;
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode cmd test");
+
+        if (!tb[WL1271_TM_ATTR_DATA])
+                return -EINVAL;
+
+        buf = nla_data(tb[WL1271_TM_ATTR_DATA]);
+        buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]);
+
+        if (tb[WL1271_TM_ATTR_ANSWER])
+                answer = nla_get_u8(tb[WL1271_TM_ATTR_ANSWER]);
+
+        if (buf_len > sizeof(struct wl1271_command))
+                return -EMSGSIZE;
+
+        mutex_lock(&wl->mutex);
+        ret = wl1271_cmd_test(wl, buf, buf_len, answer);
+        mutex_unlock(&wl->mutex);
+
+        if (ret < 0) {
+                wl1271_warning("testmode cmd test failed: %d", ret);
+                return ret;
+        }
+
+        if (answer) {
+                len = nla_total_size(buf_len);
+                skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, len);
+                if (!skb)
+                        return -ENOMEM;
+
+                NLA_PUT(skb, WL1271_TM_ATTR_DATA, buf_len, buf);
+                ret = cfg80211_testmode_reply(skb);
+                if (ret < 0)
+                        return ret;
+        }
+
+        return 0;
+
+nla_put_failure:
+        kfree_skb(skb);
+        return -EMSGSIZE;
+}
+
+static int wl1271_tm_cmd_interrogate(struct wl1271 *wl, struct nlattr *tb[])
+{
+        int ret;
+        struct wl1271_command *cmd;
+        struct sk_buff *skb;
+        u8 ie_id;
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode cmd interrogate");
+
+        if (!tb[WL1271_TM_ATTR_IE_ID])
+                return -EINVAL;
+
+        ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]);
+
+        cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+        if (!cmd)
+                return -ENOMEM;
+
+        mutex_lock(&wl->mutex);
+        ret = wl1271_cmd_interrogate(wl, ie_id, cmd, sizeof(*cmd));
+        mutex_unlock(&wl->mutex);
+
+        if (ret < 0) {
+                wl1271_warning("testmode cmd interrogate failed: %d", ret);
+                return ret;
+        }
+
+        skb = cfg80211_testmode_alloc_reply_skb(wl->hw->wiphy, sizeof(*cmd));
+        if (!skb)
+                return -ENOMEM;
+
+        NLA_PUT(skb, WL1271_TM_ATTR_DATA, sizeof(*cmd), cmd);
+
+        return 0;
+
+nla_put_failure:
+        kfree_skb(skb);
+        return -EMSGSIZE;
+}
+
+static int wl1271_tm_cmd_configure(struct wl1271 *wl, struct nlattr *tb[])
+{
+        int buf_len, ret;
+        void *buf;
+        u8 ie_id;
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode cmd configure");
+
+        if (!tb[WL1271_TM_ATTR_DATA])
+                return -EINVAL;
+        if (!tb[WL1271_TM_ATTR_IE_ID])
+                return -EINVAL;
+
+        ie_id = nla_get_u8(tb[WL1271_TM_ATTR_IE_ID]);
+        buf = nla_data(tb[WL1271_TM_ATTR_DATA]);
+        buf_len = nla_len(tb[WL1271_TM_ATTR_DATA]);
+
+        if (buf_len > sizeof(struct wl1271_command))
+                return -EMSGSIZE;
+
+        mutex_lock(&wl->mutex);
+        ret = wl1271_cmd_configure(wl, ie_id, buf, buf_len);
+        mutex_unlock(&wl->mutex);
+
+        if (ret < 0) {
+                wl1271_warning("testmode cmd configure failed: %d", ret);
+                return ret;
+        }
+
+        return 0;
+}
+
+static int wl1271_tm_cmd_nvs_push(struct wl1271 *wl, struct nlattr *tb[])
+{
+        int ret = 0;
+        size_t len;
+        void *buf;
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode cmd nvs push");
+
+        if (!tb[WL1271_TM_ATTR_DATA])
+                return -EINVAL;
+
+        buf = nla_data(tb[WL1271_TM_ATTR_DATA]);
+        len = nla_len(tb[WL1271_TM_ATTR_DATA]);
+
+        if (len != sizeof(struct wl1271_nvs_file)) {
+                wl1271_error("nvs size is not as expected: %zu != %zu",
+                             len, sizeof(struct wl1271_nvs_file));
+                return -EMSGSIZE;
+        }
+
+        mutex_lock(&wl->mutex);
+
+        kfree(wl->nvs);
+
+        wl->nvs = kmalloc(sizeof(struct wl1271_nvs_file), GFP_KERNEL);
+        if (!wl->nvs) {
+                wl1271_error("could not allocate memory for the nvs file");
+                ret = -ENOMEM;
+                goto out;
+        }
+
+        memcpy(wl->nvs, buf, len);
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode pushed nvs");
+
+out:
+        mutex_unlock(&wl->mutex);
+
+        return ret;
+}
+
+static int wl1271_tm_cmd_set_plt_mode(struct wl1271 *wl, struct nlattr *tb[])
+{
+        u32 val;
+        int ret;
+
+        wl1271_debug(DEBUG_TESTMODE, "testmode cmd set plt mode");
+
+        if (!tb[WL1271_TM_ATTR_PLT_MODE])
+                return -EINVAL;
+
+        val = nla_get_u32(tb[WL1271_TM_ATTR_PLT_MODE]);
+
+        switch (val) {
+        case 0:
+                ret = wl1271_plt_stop(wl);
+                break;
+        case 1:
+                ret = wl1271_plt_start(wl);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+
+        return ret;
+}
+
+int wl1271_tm_cmd(struct ieee80211_hw *hw, void *data, int len)
+{
+        struct wl1271 *wl = hw->priv;
+        struct nlattr *tb[WL1271_TM_ATTR_MAX + 1];
+        int err;
+
+        err = nla_parse(tb, WL1271_TM_ATTR_MAX, data, len, wl1271_tm_policy);
+        if (err)
+                return err;
+
+        if (!tb[WL1271_TM_ATTR_CMD_ID])
+                return -EINVAL;
+
+        switch (nla_get_u32(tb[WL1271_TM_ATTR_CMD_ID])) {
+        case WL1271_TM_CMD_TEST:
+                return wl1271_tm_cmd_test(wl, tb);
+        case WL1271_TM_CMD_INTERROGATE:
+                return wl1271_tm_cmd_interrogate(wl, tb);
+        case WL1271_TM_CMD_CONFIGURE:
+                return wl1271_tm_cmd_configure(wl, tb);
+        case WL1271_TM_CMD_NVS_PUSH:
+                return wl1271_tm_cmd_nvs_push(wl, tb);
+        case WL1271_TM_CMD_SET_PLT_MODE:
+                return wl1271_tm_cmd_set_plt_mode(wl, tb);
+        default:
+                return -EOPNOTSUPP;
+        }
+}