[PATCH 15/17] Add testmode.c, testmode.h

michael.nemanov
2024-05-21T17:19:30Z

From: Michael Nemanov <Michael.Nemanov@ti.com>

Allows a user-space tools to access FW APIs via CFG80211_TESTMODE
infrastructure.

Signed-off-by: Michael Nemanov <michael.nemanov@ti.com>
---
drivers/net/wireless/ti/cc33xx/testmode.c | 357 ++++++++++++++++++++++
drivers/net/wireless/ti/cc33xx/testmode.h | 12 +
2 files changed, 369 insertions(+)
create mode 100644 drivers/net/wireless/ti/cc33xx/testmode.c
create mode 100644 drivers/net/wireless/ti/cc33xx/testmode.h

diff --git a/drivers/net/wireless/ti/cc33xx/testmode.c b/drivers/net/wireless/ti/cc33xx/testmode.c
new file mode 100644
index 000000000000..032f50be5e7d
--- /dev/null
+++ b/drivers/net/wireless/ti/cc33xx/testmode.c
@@ -0,0 +1,357 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include <net/genetlink.h>
+
+#include "cc33xx.h"
+#include "acx.h"
+#include "io.h"
+#include "testmode.h"
+
+#define CC33XX_TM_MAX_DATA_LENGTH 1024
+
+enum cc33xx_tm_commands {
+ CC33XX_TM_CMD_UNSPEC,
+ CC33XX_TM_CMD_TEST,
+ CC33XX_TM_CMD_INTERROGATE,
+ CC33XX_TM_CMD_CONFIGURE,
+ CC33XX_TM_CMD_NVS_PUSH, /* Not in use. Keep to not break ABI */
+ CC33XX_TM_CMD_SET_PLT_MODE,
+ CC33XX_TM_CMD_RECOVER, /* Not in use. Keep to not break ABI */
+ CC33XX_TM_CMD_GET_MAC,
+
+ __CC33XX_TM_CMD_AFTER_LAST
+};
+
+enum cc33xx_tm_attrs {
+ CC33XX_TM_ATTR_UNSPEC,
+ CC33XX_TM_ATTR_CMD_ID,
+ CC33XX_TM_ATTR_ANSWER,
+ CC33XX_TM_ATTR_DATA,
+ CC33XX_TM_ATTR_IE_ID,
+ CC33XX_TM_ATTR_PLT_MODE,
+
+ __CC33XX_TM_ATTR_AFTER_LAST
+};
+
+#define CC33XX_TM_ATTR_MAX (__CC33XX_TM_ATTR_AFTER_LAST - 1)
+
+static struct nla_policy cc33xx_tm_policy[CC33XX_TM_ATTR_MAX + 1] = {
+ [CC33XX_TM_ATTR_CMD_ID] = { .type = NLA_U32 },
+ [CC33XX_TM_ATTR_ANSWER] = { .type = NLA_U8 },
+ [CC33XX_TM_ATTR_DATA] = { .type = NLA_BINARY,
+ .len = CC33XX_TM_MAX_DATA_LENGTH },
+ [CC33XX_TM_ATTR_IE_ID] = { .type = NLA_U32 },
+ [CC33XX_TM_ATTR_PLT_MODE] = { .type = NLA_U32 },
+};
+
+static int cc33xx_tm_cmd_test(struct cc33xx *cc, struct nlattr *tb[])
+{
+ int buf_len, ret, len;
+ struct sk_buff *skb;
+ void *buf;
+ u8 answer = 0;
+
+ cc33xx_debug(DEBUG_TESTMODE, "testmode cmd test");
+
+ if (!tb[CC33XX_TM_ATTR_DATA])
+ return -EINVAL;
+
+ buf = nla_data(tb[CC33XX_TM_ATTR_DATA]);
+ buf_len = nla_len(tb[CC33XX_TM_ATTR_DATA]);
+
+ if (tb[CC33XX_TM_ATTR_ANSWER])
+ answer = nla_get_u8(tb[CC33XX_TM_ATTR_ANSWER]);
+
+ if (buf_len > sizeof(struct cc33xx_command))
+ return -EMSGSIZE;
+
+ mutex_lock(&cc->mutex);
+
+ if (unlikely(cc->state != CC33XX_STATE_ON)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = cc33xx_cmd_test(cc, buf, buf_len, answer);
+ if (ret < 0) {
+ cc33xx_warning("testmode cmd test failed: %d", ret);
+ goto out;
+ }
+
+ if (answer) {
+ /* If we got bip calibration answer print radio status */
+ struct cc33xx_cmd_cal_p2g *params =
+ (struct cc33xx_cmd_cal_p2g *)buf;
+ s16 radio_status = (s16)le16_to_cpu(params->radio_status);
+
+ if (params->test.id == TEST_CMD_P2G_CAL && radio_status < 0)
+ cc33xx_warning("testmode cmd: radio status=%d",
+ radio_status);
+ else
+ cc33xx_info("testmode cmd: radio status=%d",
+ radio_status);
+
+ len = nla_total_size(buf_len);
+ skb = cfg80211_testmode_alloc_reply_skb(cc->hw->wiphy, len);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (nla_put(skb, CC33XX_TM_ATTR_DATA, buf_len, buf)) {
+ kfree_skb(skb);
+ ret = -EMSGSIZE;
+ goto out;
+ }
+
+ ret = cfg80211_testmode_reply(skb);
+ }
+
+out:
+ mutex_unlock(&cc->mutex);
+
+ return ret;
+}
+
+static int cc33xx_tm_cmd_interrogate(struct cc33xx *cc, struct nlattr *tb[])
+{
+ int ret;
+ struct cc33xx_command *cmd;
+ struct sk_buff *skb;
+ u8 ie_id;
+
+ cc33xx_debug(DEBUG_TESTMODE, "testmode cmd interrogate");
+
+ if (!tb[CC33XX_TM_ATTR_IE_ID])
+ return -EINVAL;
+
+ ie_id = nla_get_u8(tb[CC33XX_TM_ATTR_IE_ID]);
+
+ cc33xx_debug(DEBUG_TESTMODE, "testmode cmd interrogate id %d", ie_id);
+
+ mutex_lock(&cc->mutex);
+
+ if (unlikely(cc->state != CC33XX_STATE_ON)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = cc33xx_cmd_debug_inter(cc, ie_id, cmd,
+ sizeof(struct acx_header), sizeof(*cmd));
+ if (ret < 0) {
+ cc33xx_warning("testmode cmd interrogate failed: %d", ret);
+ goto out_free;
+ }
+
+ skb = cfg80211_testmode_alloc_reply_skb(cc->hw->wiphy, sizeof(*cmd));
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ if (nla_put(skb, CC33XX_TM_ATTR_DATA, sizeof(*cmd), cmd)) {
+ kfree_skb(skb);
+ ret = -EMSGSIZE;
+ goto out_free;
+ }
+
+ ret = cfg80211_testmode_reply(skb);
+ if (ret < 0)
+ goto out_free;
+
+out_free:
+ kfree(cmd);
+
+out:
+ mutex_unlock(&cc->mutex);
+
+ return ret;
+}
+
+static int cc33xx_tm_cmd_configure(struct cc33xx *cc, struct nlattr *tb[])
+{
+ int buf_len, ret;
+ void *buf;
+ u8 ie_id;
+
+ cc33xx_debug(DEBUG_TESTMODE, "testmode cmd configure");
+
+ if (!tb[CC33XX_TM_ATTR_DATA])
+ return -EINVAL;
+ if (!tb[CC33XX_TM_ATTR_IE_ID])
+ return -EINVAL;
+
+ ie_id = nla_get_u8(tb[CC33XX_TM_ATTR_IE_ID]);
+ buf = nla_data(tb[CC33XX_TM_ATTR_DATA]);
+ buf_len = nla_len(tb[CC33XX_TM_ATTR_DATA]);
+
+ if (buf_len > sizeof(struct cc33xx_command))
+ return -EMSGSIZE;
+
+ mutex_lock(&cc->mutex);
+ ret = cc33xx_cmd_debug(cc, ie_id, buf, buf_len);
+ mutex_unlock(&cc->mutex);
+
+ if (ret < 0) {
+ cc33xx_warning("testmode cmd configure failed: %d", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int cc33xx_tm_detect_fem(struct cc33xx *cc, struct nlattr *tb[])
+{
+ /* return FEM type */
+ int ret, len;
+ struct sk_buff *skb;
+
+ ret = cc33xx_plt_start(cc, PLT_FEM_DETECT);
+ if (ret < 0)
+ goto out;
+
+ mutex_lock(&cc->mutex);
+
+ len = nla_total_size(sizeof(cc->fem_manuf));
+ skb = cfg80211_testmode_alloc_reply_skb(cc->hw->wiphy, len);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out_mutex;
+ }
+
+ if (nla_put(skb, CC33XX_TM_ATTR_DATA, sizeof(cc->fem_manuf),
+ &cc->fem_manuf)) {
+ kfree_skb(skb);
+ ret = -EMSGSIZE;
+ goto out_mutex;
+ }
+
+ ret = cfg80211_testmode_reply(skb);
+
+out_mutex:
+ mutex_unlock(&cc->mutex);
+
+ /* We always stop plt after DETECT mode */
+ cc33xx_plt_stop(cc);
+out:
+ return ret;
+}
+
+static int cc33xx_tm_cmd_set_plt_mode(struct cc33xx *cc, struct nlattr *tb[])
+{
+ u32 val;
+ int ret;
+
+ cc33xx_debug(DEBUG_TESTMODE, "testmode cmd set plt mode");
+
+ if (!tb[CC33XX_TM_ATTR_PLT_MODE])
+ return -EINVAL;
+
+ val = nla_get_u32(tb[CC33XX_TM_ATTR_PLT_MODE]);
+
+ switch (val) {
+ case PLT_OFF:
+ ret = cc33xx_plt_stop(cc);
+ break;
+ case PLT_ON:
+ case PLT_CHIP_AWAKE:
+ ret = cc33xx_plt_start(cc, val);
+ break;
+ case PLT_FEM_DETECT:
+ ret = cc33xx_tm_detect_fem(cc, tb);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int cc33xx_tm_cmd_get_mac(struct cc33xx *cc, struct nlattr *tb[])
+{
+ struct sk_buff *skb;
+ u8 zero_mac[ETH_ALEN] = {0};
+ int ret = 0;
+
+ mutex_lock(&cc->mutex);
+
+ if (!cc->plt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (memcmp(zero_mac, cc->efuse_mac_address, ETH_ALEN) == 0) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ skb = cfg80211_testmode_alloc_reply_skb(cc->hw->wiphy, ETH_ALEN);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (nla_put(skb, CC33XX_TM_ATTR_DATA,
+ ETH_ALEN, cc->efuse_mac_address)) {
+ kfree_skb(skb);
+ ret = -EMSGSIZE;
+ goto out;
+ }
+
+ ret = cfg80211_testmode_reply(skb);
+ if (ret < 0)
+ goto out;
+
+out:
+ mutex_unlock(&cc->mutex);
+ return ret;
+}
+
+int cc33xx_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ void *data, int len)
+{
+ struct cc33xx *cc = hw->priv;
+ struct nlattr *tb[CC33XX_TM_ATTR_MAX + 1];
+ u32 nla_cmd;
+ int err;
+
+ err = nla_parse_deprecated(tb, CC33XX_TM_ATTR_MAX, data, len,
+ cc33xx_tm_policy, NULL);
+ if (err)
+ return err;
+
+ if (!tb[CC33XX_TM_ATTR_CMD_ID])
+ return -EINVAL;
+
+ nla_cmd = nla_get_u32(tb[CC33XX_TM_ATTR_CMD_ID]);
+
+ /* Only SET_PLT_MODE is allowed in case of mode PLT_CHIP_AWAKE */
+ if (cc->plt_mode == PLT_CHIP_AWAKE &&
+ nla_cmd != CC33XX_TM_CMD_SET_PLT_MODE)
+ return -EOPNOTSUPP;
+
+ switch (nla_cmd) {
+ case CC33XX_TM_CMD_TEST:
+ return cc33xx_tm_cmd_test(cc, tb);
+ case CC33XX_TM_CMD_INTERROGATE:
+ return cc33xx_tm_cmd_interrogate(cc, tb);
+ case CC33XX_TM_CMD_CONFIGURE:
+ return cc33xx_tm_cmd_configure(cc, tb);
+ case CC33XX_TM_CMD_SET_PLT_MODE:
+ return cc33xx_tm_cmd_set_plt_mode(cc, tb);
+ case CC33XX_TM_CMD_GET_MAC:
+ return cc33xx_tm_cmd_get_mac(cc, tb);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
diff --git a/drivers/net/wireless/ti/cc33xx/testmode.h b/drivers/net/wireless/ti/cc33xx/testmode.h
new file mode 100644
index 000000000000..58f336202925
--- /dev/null
+++ b/drivers/net/wireless/ti/cc33xx/testmode.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#ifndef __TESTMODE_H__
+#define __TESTMODE_H__
+
+int cc33xx_tm_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ void *data, int len);
+
+#endif /* __TESTMODE_H__ */
--
2.25.1