qcacmn: FW-Host Handshake for REG_CHAN_LIST_CC_EVENT

In order to support different power levels of 6G AP and client,
the channel list event from FW namely "REG_CHAN_LIST_CC_EVENTID"
is modified to add few parameters specific to 6GHZ devices.
Hence the existing event is replaced by REG_CHAN_LIST_CC_EVENT_EXT for
all 2G/5G/6G pdevs in FW. Therefore, after the service ready event, FW
sends the channel list for the configured country/regdomain via
REG_CHAN_LIST_CC_EVENT_EXT. This mandates that all host software need
to have the processing capability of REG_CHAN_LIST_CC_EVENT_EXT to bring
up the AP.

As there can be host software which has not yet implemented the
version of "REG_CHAN_LIST_CC_EVENT_EXT", backward compatibility is lost
if "ONLY REG_CHAN_LIST_CC_EVENT_EXT" is sent by FW.
Hence a 3 way handshake between host and FW is established.

1. FW advertises its capability of processing REG_CHAN_LIST_CC_EVENT_EXT
id via wmi service bit 'wmi_service_reg_cc_ext_event_support'.
2. If the host is capable of processing the "REG_CHAN_LIST_CC_EVENT_EXT"
event id (which is done based on registration of this event), host
sends the capability in WMI_INIT_CMDID setting a bit in host_service_flags.
3. Based on host capability advertised in WMI_INIT_CMDID, FW decides to
send the old event ("REG_CHAN_LIST_CC_EVENTID") or the new event
("REG_CHAN_LIST_CC_EVENT_EXT").
4. If there is no flag indicated by host to FW in WMI_INIT_CMDID, FW
by default sends the old event ("REG_CHAN_LIST_CC_EVENTID").

CRs-Fixed: 2876360
Change-Id: Ibe95f414ad9fff0e5641bcc6e60450ef9afe245b

wmi/inc/wmi_unified_param.h

@@ -5108,6 +5108,7 @@ typedef enum {
 	wmi_service_go_connected_d3_wow,
 	wmi_service_ext_tpc_reg_support,
 	wmi_service_ndi_txbf_support,
+	wmi_service_reg_cc_ext_event_support,
 	wmi_services_max,
 } wmi_conv_service_ids;
 #define WMI_SERVICE_UNAVAILABLE 0xFFFF
@@ -5247,6 +5248,7 @@ struct wmi_host_fw_abi_ver {
  * @ast_tid_low_mask_enable: enable tid valid mask for low priority flow
  * @nan_separate_iface_support: Separate iface creation for NAN
  * @time_sync_ftm: enable ftm based time sync
+ * @is_reg_cc_ext_event_supported: Flag to indicate if reg_cc_ext is supported
  * @max_rnr_neighbours: Max supported RNR neighbors in multisoc APs
  * @ema_max_vap_cnt: Number of maximum EMA tx-vaps at any instance of time
  * @ema_max_profile_period: Maximum EMA profile periodicity on any pdev
@@ -5354,6 +5356,7 @@ typedef struct {
 		 ast_tid_low_mask_enable:8;
 	bool nan_separate_iface_support;
 	bool time_sync_ftm;
+	bool is_reg_cc_ext_event_supported;
 	uint32_t max_rnr_neighbours;
 	uint32_t ema_max_vap_cnt;
 	uint32_t ema_max_profile_period;

wmi/src/wmi_unified_tlv.c

@@ -7339,6 +7339,10 @@ void wmi_copy_resource_config(wmi_resource_config *resource_cfg,
 	if (tgt_res_cfg->is_go_connected_d3wow_enabled)
 		WMI_RSRC_CFG_FLAGS2_IS_GO_CONNECTED_D3WOW_ENABLED_SET(
 			resource_cfg->flags2, 1);
+
+	WMI_RSRC_CFG_HOST_SERVICE_FLAG_REG_CC_EXT_SUPPORT_SET(
+		resource_cfg->host_service_flags,
+		tgt_res_cfg->is_reg_cc_ext_event_supported);
 }
 
 /* copy_hw_mode_id_in_init_cmd() - Helper routine to copy hw_mode in init cmd
@@ -15762,6 +15766,8 @@ static void populate_tlv_service(uint32_t *wmi_service)
 			WMI_SERVICE_EXT_TPC_REG_SUPPORT;
 	wmi_service[wmi_service_ndi_txbf_support] =
 			WMI_SERVICE_NDI_TXBF_SUPPORT;
+	wmi_service[wmi_service_reg_cc_ext_event_support] =
+			WMI_SERVICE_REG_CC_EXT_EVENT_SUPPORT;
 }
 
 /**