These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / drivers / net / wireless / ath / ath10k / testmode.c
index b084f88..1d5a2fd 100644 (file)
@@ -139,11 +139,181 @@ static int ath10k_tm_cmd_get_version(struct ath10k *ar, struct nlattr *tb[])
        return cfg80211_testmode_reply(skb);
 }
 
-static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
+static int ath10k_tm_fetch_utf_firmware_api_2(struct ath10k *ar)
+{
+       size_t len, magic_len, ie_len;
+       struct ath10k_fw_ie *hdr;
+       char filename[100];
+       __le32 *version;
+       const u8 *data;
+       int ie_id, ret;
+
+       snprintf(filename, sizeof(filename), "%s/%s",
+                ar->hw_params.fw.dir, ATH10K_FW_UTF_API2_FILE);
+
+       /* load utf firmware image */
+       ret = request_firmware(&ar->testmode.utf, filename, ar->dev);
+       if (ret) {
+               ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
+                           filename, ret);
+               return ret;
+       }
+
+       data = ar->testmode.utf->data;
+       len = ar->testmode.utf->size;
+
+       /* FIXME: call release_firmware() in error cases */
+
+       /* magic also includes the null byte, check that as well */
+       magic_len = strlen(ATH10K_FIRMWARE_MAGIC) + 1;
+
+       if (len < magic_len) {
+               ath10k_err(ar, "utf firmware file is too small to contain magic\n");
+               ret = -EINVAL;
+               goto err;
+       }
+
+       if (memcmp(data, ATH10K_FIRMWARE_MAGIC, magic_len) != 0) {
+               ath10k_err(ar, "invalid firmware magic\n");
+               ret = -EINVAL;
+               goto err;
+       }
+
+       /* jump over the padding */
+       magic_len = ALIGN(magic_len, 4);
+
+       len -= magic_len;
+       data += magic_len;
+
+       /* loop elements */
+       while (len > sizeof(struct ath10k_fw_ie)) {
+               hdr = (struct ath10k_fw_ie *)data;
+
+               ie_id = le32_to_cpu(hdr->id);
+               ie_len = le32_to_cpu(hdr->len);
+
+               len -= sizeof(*hdr);
+               data += sizeof(*hdr);
+
+               if (len < ie_len) {
+                       ath10k_err(ar, "invalid length for FW IE %d (%zu < %zu)\n",
+                                  ie_id, len, ie_len);
+                       ret = -EINVAL;
+                       goto err;
+               }
+
+               switch (ie_id) {
+               case ATH10K_FW_IE_FW_VERSION:
+                       if (ie_len > sizeof(ar->testmode.utf_version) - 1)
+                               break;
+
+                       memcpy(ar->testmode.utf_version, data, ie_len);
+                       ar->testmode.utf_version[ie_len] = '\0';
+
+                       ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
+                                  "testmode found fw utf version %s\n",
+                                  ar->testmode.utf_version);
+                       break;
+               case ATH10K_FW_IE_TIMESTAMP:
+                       /* ignore timestamp, but don't warn about it either */
+                       break;
+               case ATH10K_FW_IE_FW_IMAGE:
+                       ath10k_dbg(ar, ATH10K_DBG_TESTMODE,
+                                  "testmode found fw image ie (%zd B)\n",
+                                  ie_len);
+
+                       ar->testmode.utf_firmware_data = data;
+                       ar->testmode.utf_firmware_len = ie_len;
+                       break;
+               case ATH10K_FW_IE_WMI_OP_VERSION:
+                       if (ie_len != sizeof(u32))
+                               break;
+                       version = (__le32 *)data;
+                       ar->testmode.op_version = le32_to_cpup(version);
+                       ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode found fw ie wmi op version %d\n",
+                                  ar->testmode.op_version);
+                       break;
+               default:
+                       ath10k_warn(ar, "Unknown testmode FW IE: %u\n",
+                                   le32_to_cpu(hdr->id));
+                       break;
+               }
+               /* jump over the padding */
+               ie_len = ALIGN(ie_len, 4);
+
+               len -= ie_len;
+               data += ie_len;
+       }
+
+       if (!ar->testmode.utf_firmware_data || !ar->testmode.utf_firmware_len) {
+               ath10k_err(ar, "No ATH10K_FW_IE_FW_IMAGE found\n");
+               ret = -EINVAL;
+               goto err;
+       }
+
+       return 0;
+
+err:
+       release_firmware(ar->testmode.utf);
+
+       return ret;
+}
+
+static int ath10k_tm_fetch_utf_firmware_api_1(struct ath10k *ar)
 {
        char filename[100];
        int ret;
 
+       snprintf(filename, sizeof(filename), "%s/%s",
+                ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);
+
+       /* load utf firmware image */
+       ret = request_firmware(&ar->testmode.utf, filename, ar->dev);
+       if (ret) {
+               ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
+                           filename, ret);
+               return ret;
+       }
+
+       /* We didn't find FW UTF API 1 ("utf.bin") does not advertise
+        * firmware features. Do an ugly hack where we force the firmware
+        * features to match with 10.1 branch so that wmi.c will use the
+        * correct WMI interface.
+        */
+
+       ar->testmode.op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
+       ar->testmode.utf_firmware_data = ar->testmode.utf->data;
+       ar->testmode.utf_firmware_len = ar->testmode.utf->size;
+
+       return 0;
+}
+
+static int ath10k_tm_fetch_firmware(struct ath10k *ar)
+{
+       int ret;
+
+       ret = ath10k_tm_fetch_utf_firmware_api_2(ar);
+       if (ret == 0) {
+               ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using fw utf api 2");
+               return 0;
+       }
+
+       ret = ath10k_tm_fetch_utf_firmware_api_1(ar);
+       if (ret) {
+               ath10k_err(ar, "failed to fetch utf firmware binary: %d", ret);
+               return ret;
+       }
+
+       ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode using utf api 1");
+
+       return 0;
+}
+
+static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
+{
+       const char *ver;
+       int ret;
+
        ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode cmd utf start\n");
 
        mutex_lock(&ar->conf_mutex);
@@ -165,36 +335,27 @@ static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
                goto err;
        }
 
-       snprintf(filename, sizeof(filename), "%s/%s",
-                ar->hw_params.fw.dir, ATH10K_FW_UTF_FILE);
-
-       /* load utf firmware image */
-       ret = request_firmware(&ar->testmode.utf, filename, ar->dev);
+       ret = ath10k_tm_fetch_firmware(ar);
        if (ret) {
-               ath10k_warn(ar, "failed to retrieve utf firmware '%s': %d\n",
-                           filename, ret);
+               ath10k_err(ar, "failed to fetch UTF firmware: %d", ret);
                goto err;
        }
 
        spin_lock_bh(&ar->data_lock);
-
        ar->testmode.utf_monitor = true;
-
        spin_unlock_bh(&ar->data_lock);
-
        BUILD_BUG_ON(sizeof(ar->fw_features) !=
                     sizeof(ar->testmode.orig_fw_features));
 
        memcpy(ar->testmode.orig_fw_features, ar->fw_features,
               sizeof(ar->fw_features));
        ar->testmode.orig_wmi_op_version = ar->wmi.op_version;
-
-       /* utf.bin firmware image does not advertise firmware features. Do
-        * an ugly hack where we force the firmware features so that wmi.c
-        * will use the correct WMI interface.
-        */
        memset(ar->fw_features, 0, sizeof(ar->fw_features));
-       ar->wmi.op_version = ATH10K_FW_WMI_OP_VERSION_10_1;
+
+       ar->wmi.op_version = ar->testmode.op_version;
+
+       ath10k_dbg(ar, ATH10K_DBG_TESTMODE, "testmode wmi version %d\n",
+                  ar->wmi.op_version);
 
        ret = ath10k_hif_power_up(ar);
        if (ret) {
@@ -212,7 +373,12 @@ static int ath10k_tm_cmd_utf_start(struct ath10k *ar, struct nlattr *tb[])
 
        ar->state = ATH10K_STATE_UTF;
 
-       ath10k_info(ar, "UTF firmware started\n");
+       if (strlen(ar->testmode.utf_version) > 0)
+               ver = ar->testmode.utf_version;
+       else
+               ver = "API 1";
+
+       ath10k_info(ar, "UTF firmware %s started\n", ver);
 
        mutex_unlock(&ar->conf_mutex);