iwlwifi: mvm: Read acpi dsm to get unii4 enable/disable bitmap.

Read the UNII4 setting from the ACPI table and use it in the
LARI_CONFIG_CHANGE_CMD accordingly.

This setting allows OEMs to enable or disable UNII4, bypassing the FW
defaults.

Signed-off-by: Abhishek Naik <abhishek.naik@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210617100544.223090c509c4.If03cb5393607ae494041b6187bcec134d6a1e06d@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
index 9fe6447..b858e99 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
@@ -78,6 +78,7 @@ enum iwl_dsm_funcs_rev_0 {
        DSM_FUNC_DISABLE_SRD = 1,
        DSM_FUNC_ENABLE_INDONESIA_5G2 = 2,
        DSM_FUNC_11AX_ENABLEMENT = 6,
+       DSM_FUNC_ENABLE_UNII4_CHAN = 7
 };
 
 enum iwl_dsm_values_srd {

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h b/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h
index dc8f277..cf48c6f 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/nvm-reg.h
@@ -453,6 +453,25 @@ struct iwl_lari_config_change_cmd_v3 {
 } __packed; /* LARI_CHANGE_CONF_CMD_S_VER_3 */
 
 /**
+ * struct iwl_lari_config_change_cmd_v4 - change LARI configuration
+ * @config_bitmap: Bitmap of the config commands. Each bit will trigger a
+ *     different predefined FW config operation.
+ * @oem_uhb_allow_bitmap: Bitmap of UHB enabled MCC sets.
+ * @oem_11ax_allow_bitmap: Bitmap of 11ax allowed MCCs. There are two bits
+ *     per country, one to indicate whether to override and the other to
+ *     indicate the value to use.
+ * @oem_unii4_allow_bitmap: Bitmap of unii4 allowed MCCs.There are two bits
+ *     per country, one to indicate whether to override and the other to
+ *     indicate allow/disallow unii4 channels.
+ */
+struct iwl_lari_config_change_cmd_v4 {
+       __le32 config_bitmap;
+       __le32 oem_uhb_allow_bitmap;
+       __le32 oem_11ax_allow_bitmap;
+       __le32 oem_unii4_allow_bitmap;
+} __packed; /* LARI_CHANGE_CONF_CMD_S_VER_4 */
+
+/**
  * struct iwl_pnvm_init_complete_ntfy - PNVM initialization complete
  * @status: PNVM image loading status
  */

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index 9f2a5de..38fd588 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -1141,7 +1141,7 @@ static void iwl_mvm_lari_cfg(struct iwl_mvm *mvm)
 {
        int ret;
        u32 value;
-       struct iwl_lari_config_change_cmd_v3 cmd = {};
+       struct iwl_lari_config_change_cmd_v4 cmd = {};
 
        cmd.config_bitmap = iwl_acpi_get_lari_config_bitmap(&mvm->fwrt);
 
@@ -1151,12 +1151,22 @@ static void iwl_mvm_lari_cfg(struct iwl_mvm *mvm)
                cmd.oem_11ax_allow_bitmap = cpu_to_le32(value);
        /* apply more config masks here */
 
-       if (cmd.config_bitmap || cmd.oem_11ax_allow_bitmap) {
+       ret = iwl_acpi_get_dsm_u32((&mvm->fwrt)->dev, 0,
+                                  DSM_FUNC_ENABLE_UNII4_CHAN,
+                                  &iwl_guid, &value);
+       if (!ret)
+               cmd.oem_unii4_allow_bitmap = cpu_to_le32(value);
+
+       if (cmd.config_bitmap ||
+           cmd.oem_11ax_allow_bitmap ||
+           cmd.oem_unii4_allow_bitmap) {
                size_t cmd_size;
                u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
                                                   REGULATORY_AND_NVM_GROUP,
                                                   LARI_CONFIG_CHANGE, 1);
-               if (cmd_ver == 3)
+               if (cmd_ver == 4)
+                       cmd_size = sizeof(struct iwl_lari_config_change_cmd_v4);
+               else if (cmd_ver == 3)
                        cmd_size = sizeof(struct iwl_lari_config_change_cmd_v3);
                else if (cmd_ver == 2)
                        cmd_size = sizeof(struct iwl_lari_config_change_cmd_v2);
@@ -1167,6 +1177,10 @@ static void iwl_mvm_lari_cfg(struct iwl_mvm *mvm)
                                "sending LARI_CONFIG_CHANGE, config_bitmap=0x%x, oem_11ax_allow_bitmap=0x%x\n",
                                le32_to_cpu(cmd.config_bitmap),
                                le32_to_cpu(cmd.oem_11ax_allow_bitmap));
+               IWL_DEBUG_RADIO(mvm,
+                               "sending LARI_CONFIG_CHANGE, oem_unii4_allow_bitmap=0x%x, cmd_ver=%d\n",
+                               le32_to_cpu(cmd.oem_unii4_allow_bitmap),
+                               cmd_ver);
                ret = iwl_mvm_send_cmd_pdu(mvm,
                                           WIDE_ID(REGULATORY_AND_NVM_GROUP,
                                                   LARI_CONFIG_CHANGE),