wifi: wcn36xx: Move firmware feature bit storage to dedicated firmware.c file

The naming of the get/set/clear firmware feature capability bits doesn't
really follow the established namespace pattern of
wcn36xx_logicalblock_do_something();

The feature bits are accessed by smd.c and main.c. It would be nice to
display the found feature bits in debugfs. To do so though we should tidy
up the namespace a bit.

Move the firmware feature exchange API to its own file - firmware.c giving
us the opportunity to functionally decompose other firmware related
accessors as appropriate in future.
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220727161655.2286867-3-bryan.odonoghue@linaro.org

drivers/net/wireless/ath/wcn36xx/Makefile

@@ -5,6 +5,7 @@ wcn36xx-y +=   main.o \
                txrx.o \
                smd.o \
                pmc.o \
-               debug.o
+               debug.o \
+               firmware.o
 
 wcn36xx-$(CONFIG_NL80211_TESTMODE) += testmode.o

drivers/net/wireless/ath/wcn36xx/firmware.c

+// SPDX-License-Identifier: GPL-2.0-only
+
+#include "wcn36xx.h"
+#include "firmware.h"
+
+void wcn36xx_firmware_set_feat_caps(u32 *bitmap,
+				    enum wcn36xx_firmware_feat_caps cap)
+{
+	int arr_idx, bit_idx;
+
+	if (cap < 0 || cap > 127) {
+		wcn36xx_warn("error cap idx %d\n", cap);
+		return;
+	}
+
+	arr_idx = cap / 32;
+	bit_idx = cap % 32;
+	bitmap[arr_idx] |= (1 << bit_idx);
+}
+
+int wcn36xx_firmware_get_feat_caps(u32 *bitmap,
+				   enum wcn36xx_firmware_feat_caps cap)
+{
+	int arr_idx, bit_idx;
+
+	if (cap < 0 || cap > 127) {
+		wcn36xx_warn("error cap idx %d\n", cap);
+		return -EINVAL;
+	}
+
+	arr_idx = cap / 32;
+	bit_idx = cap % 32;
+
+	return (bitmap[arr_idx] & (1 << bit_idx)) ? 1 : 0;
+}
+
+void wcn36xx_firmware_clear_feat_caps(u32 *bitmap,
+				      enum wcn36xx_firmware_feat_caps cap)
+{
+	int arr_idx, bit_idx;
+
+	if (cap < 0 || cap > 127) {
+		wcn36xx_warn("error cap idx %d\n", cap);
+		return;
+	}
+
+	arr_idx = cap / 32;
+	bit_idx = cap % 32;
+	bitmap[arr_idx] &= ~(1 << bit_idx);
+}

drivers/net/wireless/ath/wcn36xx/firmware.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef _FIRMWARE_H_
+#define _FIRMWARE_H_
+
+/* Capability bitmap exchange definitions and macros starts */
+
+enum wcn36xx_firmware_feat_caps {
+	MCC = 0,
+	P2P = 1,
+	DOT11AC = 2,
+	SLM_SESSIONIZATION = 3,
+	DOT11AC_OPMODE = 4,
+	SAP32STA = 5,
+	TDLS = 6,
+	P2P_GO_NOA_DECOUPLE_INIT_SCAN = 7,
+	WLANACTIVE_OFFLOAD = 8,
+	BEACON_OFFLOAD = 9,
+	SCAN_OFFLOAD = 10,
+	ROAM_OFFLOAD = 11,
+	BCN_MISS_OFFLOAD = 12,
+	STA_POWERSAVE = 13,
+	STA_ADVANCED_PWRSAVE = 14,
+	AP_UAPSD = 15,
+	AP_DFS = 16,
+	BLOCKACK = 17,
+	PHY_ERR = 18,
+	BCN_FILTER = 19,
+	RTT = 20,
+	RATECTRL = 21,
+	WOW = 22,
+	WLAN_ROAM_SCAN_OFFLOAD = 23,
+	SPECULATIVE_PS_POLL = 24,
+	SCAN_SCH = 25,
+	IBSS_HEARTBEAT_OFFLOAD = 26,
+	WLAN_SCAN_OFFLOAD = 27,
+	WLAN_PERIODIC_TX_PTRN = 28,
+	ADVANCE_TDLS = 29,
+	BATCH_SCAN = 30,
+	FW_IN_TX_PATH = 31,
+	EXTENDED_NSOFFLOAD_SLOT = 32,
+	CH_SWITCH_V1 = 33,
+	HT40_OBSS_SCAN = 34,
+	UPDATE_CHANNEL_LIST = 35,
+	WLAN_MCADDR_FLT = 36,
+	WLAN_CH144 = 37,
+	NAN = 38,
+	TDLS_SCAN_COEXISTENCE = 39,
+	LINK_LAYER_STATS_MEAS = 40,
+	MU_MIMO = 41,
+	EXTENDED_SCAN = 42,
+	DYNAMIC_WMM_PS = 43,
+	MAC_SPOOFED_SCAN = 44,
+	BMU_ERROR_GENERIC_RECOVERY = 45,
+	DISA = 46,
+	FW_STATS = 47,
+	WPS_PRBRSP_TMPL = 48,
+	BCN_IE_FLT_DELTA = 49,
+	TDLS_OFF_CHANNEL = 51,
+	RTT3 = 52,
+	MGMT_FRAME_LOGGING = 53,
+	ENHANCED_TXBD_COMPLETION = 54,
+	LOGGING_ENHANCEMENT = 55,
+	EXT_SCAN_ENHANCED = 56,
+	MEMORY_DUMP_SUPPORTED = 57,
+	PER_PKT_STATS_SUPPORTED = 58,
+	EXT_LL_STAT = 60,
+	WIFI_CONFIG = 61,
+	ANTENNA_DIVERSITY_SELECTION = 62,
+
+	MAX_FEATURE_SUPPORTED = 128,
+};
+
+void wcn36xx_firmware_set_feat_caps(u32 *bitmap,
+				    enum wcn36xx_firmware_feat_caps cap);
+int wcn36xx_firmware_get_feat_caps(u32 *bitmap,
+				   enum wcn36xx_firmware_feat_caps cap);
+void wcn36xx_firmware_clear_feat_caps(u32 *bitmap,
+				      enum wcn36xx_firmware_feat_caps cap);
+
+#endif /* _FIRMWARE_H_ */
+

drivers/net/wireless/ath/wcn36xx/hal.h

@@ -4758,74 +4758,6 @@ struct wcn36xx_hal_set_power_params_resp {
 	u32 status;
 } __packed;
 
-/* Capability bitmap exchange definitions and macros starts */
-
-enum wcn36xx_firmware_feat_caps {
-	MCC = 0,
-	P2P = 1,
-	DOT11AC = 2,
-	SLM_SESSIONIZATION = 3,
-	DOT11AC_OPMODE = 4,
-	SAP32STA = 5,
-	TDLS = 6,
-	P2P_GO_NOA_DECOUPLE_INIT_SCAN = 7,
-	WLANACTIVE_OFFLOAD = 8,
-	BEACON_OFFLOAD = 9,
-	SCAN_OFFLOAD = 10,
-	ROAM_OFFLOAD = 11,
-	BCN_MISS_OFFLOAD = 12,
-	STA_POWERSAVE = 13,
-	STA_ADVANCED_PWRSAVE = 14,
-	AP_UAPSD = 15,
-	AP_DFS = 16,
-	BLOCKACK = 17,
-	PHY_ERR = 18,
-	BCN_FILTER = 19,
-	RTT = 20,
-	RATECTRL = 21,
-	WOW = 22,
-	WLAN_ROAM_SCAN_OFFLOAD = 23,
-	SPECULATIVE_PS_POLL = 24,
-	SCAN_SCH = 25,
-	IBSS_HEARTBEAT_OFFLOAD = 26,
-	WLAN_SCAN_OFFLOAD = 27,
-	WLAN_PERIODIC_TX_PTRN = 28,
-	ADVANCE_TDLS = 29,
-	BATCH_SCAN = 30,
-	FW_IN_TX_PATH = 31,
-	EXTENDED_NSOFFLOAD_SLOT = 32,
-	CH_SWITCH_V1 = 33,
-	HT40_OBSS_SCAN = 34,
-	UPDATE_CHANNEL_LIST = 35,
-	WLAN_MCADDR_FLT = 36,
-	WLAN_CH144 = 37,
-	NAN = 38,
-	TDLS_SCAN_COEXISTENCE = 39,
-	LINK_LAYER_STATS_MEAS = 40,
-	MU_MIMO = 41,
-	EXTENDED_SCAN = 42,
-	DYNAMIC_WMM_PS = 43,
-	MAC_SPOOFED_SCAN = 44,
-	BMU_ERROR_GENERIC_RECOVERY = 45,
-	DISA = 46,
-	FW_STATS = 47,
-	WPS_PRBRSP_TMPL = 48,
-	BCN_IE_FLT_DELTA = 49,
-	TDLS_OFF_CHANNEL = 51,
-	RTT3 = 52,
-	MGMT_FRAME_LOGGING = 53,
-	ENHANCED_TXBD_COMPLETION = 54,
-	LOGGING_ENHANCEMENT = 55,
-	EXT_SCAN_ENHANCED = 56,
-	MEMORY_DUMP_SUPPORTED = 57,
-	PER_PKT_STATS_SUPPORTED = 58,
-	EXT_LL_STAT = 60,
-	WIFI_CONFIG = 61,
-	ANTENNA_DIVERSITY_SELECTION = 62,
-
-	MAX_FEATURE_SUPPORTED = 128,
-};
-
 #define WCN36XX_HAL_CAPS_SIZE 4
 
 struct wcn36xx_hal_feat_caps_msg {

drivers/net/wireless/ath/wcn36xx/main.c

@@ -28,6 +28,7 @@
 #include <net/ipv6.h>
 #include "wcn36xx.h"
 #include "testmode.h"
+#include "firmware.h"
 
 unsigned int wcn36xx_dbg_mask;
 module_param_named(debug_mask, wcn36xx_dbg_mask, uint, 0644);
@@ -272,7 +273,7 @@ static void wcn36xx_feat_caps_info(struct wcn36xx *wcn)
 	int i;
 
 	for (i = 0; i < MAX_FEATURE_SUPPORTED; i++) {
-		if (get_feat_caps(wcn->fw_feat_caps, i))
+		if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, i))
 			wcn36xx_dbg(WCN36XX_DBG_MAC, "FW Cap %s\n", wcn36xx_get_cap_name(i));
 	}
 }
@@ -705,7 +706,7 @@ static int wcn36xx_hw_scan(struct ieee80211_hw *hw,
 {
 	struct wcn36xx *wcn = hw->priv;
 
-	if (!get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
+	if (!wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 		/* fallback to mac80211 software scan */
 		return 1;
 	}
@@ -743,7 +744,7 @@ static void wcn36xx_cancel_hw_scan(struct ieee80211_hw *hw,
 	wcn->scan_aborted = true;
 	mutex_unlock(&wcn->scan_lock);
 
-	if (get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
+	if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, SCAN_OFFLOAD)) {
 		/* ieee80211_scan_completed will be called on FW scan
 		 * indication */
 		wcn36xx_smd_stop_hw_scan(wcn);

drivers/net/wireless/ath/wcn36xx/smd.c

@@ -22,6 +22,7 @@
 #include <linux/bitops.h>
 #include <linux/rpmsg.h>
 #include "smd.h"
+#include "firmware.h"
 
 struct wcn36xx_cfg_val {
 	u32 cfg_id;
@@ -295,7 +296,7 @@ static void wcn36xx_smd_set_sta_vht_params(struct wcn36xx *wcn,
 		sta_params->vht_capable = sta->deflink.vht_cap.vht_supported;
 		sta_params->vht_ldpc_enabled =
 			is_cap_supported(caps, IEEE80211_VHT_CAP_RXLDPC);
-		if (get_feat_caps(wcn->fw_feat_caps, MU_MIMO)) {
+		if (wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, MU_MIMO)) {
 			sta_params->vht_tx_mu_beamformee_capable =
 				is_cap_supported(caps, IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
 			if (sta_params->vht_tx_mu_beamformee_capable)
@@ -2431,49 +2432,6 @@ int wcn36xx_smd_dump_cmd_req(struct wcn36xx *wcn, u32 arg1, u32 arg2,
 	return ret;
 }
 
-void set_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap)
-{
-	int arr_idx, bit_idx;
-
-	if (cap < 0 || cap > 127) {
-		wcn36xx_warn("error cap idx %d\n", cap);
-		return;
-	}
-
-	arr_idx = cap / 32;
-	bit_idx = cap % 32;
-	bitmap[arr_idx] |= (1 << bit_idx);
-}
-
-int get_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap)
-{
-	int arr_idx, bit_idx;
-
-	if (cap < 0 || cap > 127) {
-		wcn36xx_warn("error cap idx %d\n", cap);
-		return -EINVAL;
-	}
-
-	arr_idx = cap / 32;
-	bit_idx = cap % 32;
-
-	return (bitmap[arr_idx] & (1 << bit_idx)) ? 1 : 0;
-}
-
-void clear_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap)
-{
-	int arr_idx, bit_idx;
-
-	if (cap < 0 || cap > 127) {
-		wcn36xx_warn("error cap idx %d\n", cap);
-		return;
-	}
-
-	arr_idx = cap / 32;
-	bit_idx = cap % 32;
-	bitmap[arr_idx] &= ~(1 << bit_idx);
-}
-
 int wcn36xx_smd_feature_caps_exchange(struct wcn36xx *wcn)
 {
 	struct wcn36xx_hal_feat_caps_msg msg_body, *rsp;
@@ -2482,11 +2440,12 @@ int wcn36xx_smd_feature_caps_exchange(struct wcn36xx *wcn)
 	mutex_lock(&wcn->hal_mutex);
 	INIT_HAL_MSG(msg_body, WCN36XX_HAL_FEATURE_CAPS_EXCHANGE_REQ);
 
-	set_feat_caps(msg_body.feat_caps, STA_POWERSAVE);
+	wcn36xx_firmware_set_feat_caps(msg_body.feat_caps, STA_POWERSAVE);
 	if (wcn->rf_id == RF_IRIS_WCN3680) {
-		set_feat_caps(msg_body.feat_caps, DOT11AC);
-		set_feat_caps(msg_body.feat_caps, WLAN_CH144);
-		set_feat_caps(msg_body.feat_caps, ANTENNA_DIVERSITY_SELECTION);
+		wcn36xx_firmware_set_feat_caps(msg_body.feat_caps, DOT11AC);
+		wcn36xx_firmware_set_feat_caps(msg_body.feat_caps, WLAN_CH144);
+		wcn36xx_firmware_set_feat_caps(msg_body.feat_caps,
+					       ANTENNA_DIVERSITY_SELECTION);
 	}
 
 	PREPARE_HAL_BUF(wcn->hal_buf, msg_body);
@@ -3300,7 +3259,7 @@ int wcn36xx_smd_add_beacon_filter(struct wcn36xx *wcn,
 	size_t payload_size;
 	int ret;
 
-	if (!get_feat_caps(wcn->fw_feat_caps, BCN_FILTER))
+	if (!wcn36xx_firmware_get_feat_caps(wcn->fw_feat_caps, BCN_FILTER))
 		return -EOPNOTSUPP;
 
 	mutex_lock(&wcn->hal_mutex);

drivers/net/wireless/ath/wcn36xx/smd.h

@@ -125,9 +125,6 @@ int wcn36xx_smd_keep_alive_req(struct wcn36xx *wcn,
 int wcn36xx_smd_dump_cmd_req(struct wcn36xx *wcn, u32 arg1, u32 arg2,
 			     u32 arg3, u32 arg4, u32 arg5);
 int wcn36xx_smd_feature_caps_exchange(struct wcn36xx *wcn);
-void set_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap);
-int get_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap);
-void clear_feat_caps(u32 *bitmap, enum wcn36xx_firmware_feat_caps cap);
 
 int wcn36xx_smd_add_ba_session(struct wcn36xx *wcn,
 		struct ieee80211_sta *sta,