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Date: Wed, 20 Jul 2022 09:16:05 +0200
From: Loic Poulain <loic.poulain@...aro.org>
To: "Bryan O'Donoghue" <bryan.odonoghue@...aro.org>
Cc: kvalo@...nel.org, davem@...emloft.net, edumazet@...gle.com,
kuba@...nel.org, pabeni@...hat.com, wcn36xx@...ts.infradead.org,
linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2 2/4] wcn36xx: Move firmware feature bit storage to
dedicated firmware.c file
On Tue, 19 Jul 2022 at 16:33, Bryan O'Donoghue
<bryan.odonoghue@...aro.org> wrote:
>
> 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.
>
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Reviewed-by: Loic Poulain <loic.poulain@...aro.org>
> ---
> drivers/net/wireless/ath/wcn36xx/Makefile | 3 +-
> drivers/net/wireless/ath/wcn36xx/firmware.c | 50 +++++++++++++
> drivers/net/wireless/ath/wcn36xx/firmware.h | 82 +++++++++++++++++++++
> drivers/net/wireless/ath/wcn36xx/hal.h | 68 -----------------
> drivers/net/wireless/ath/wcn36xx/main.c | 7 +-
> drivers/net/wireless/ath/wcn36xx/smd.c | 57 ++------------
> drivers/net/wireless/ath/wcn36xx/smd.h | 3 -
> 7 files changed, 146 insertions(+), 124 deletions(-)
> create mode 100644 drivers/net/wireless/ath/wcn36xx/firmware.c
> create mode 100644 drivers/net/wireless/ath/wcn36xx/firmware.h
>
> diff --git a/drivers/net/wireless/ath/wcn36xx/Makefile b/drivers/net/wireless/ath/wcn36xx/Makefile
> index 27413703ad69..26bec795b372 100644
> --- a/drivers/net/wireless/ath/wcn36xx/Makefile
> +++ b/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
> diff --git a/drivers/net/wireless/ath/wcn36xx/firmware.c b/drivers/net/wireless/ath/wcn36xx/firmware.c
> new file mode 100644
> index 000000000000..03b93d2bdcf9
> --- /dev/null
> +++ b/drivers/net/wireless/ath/wcn36xx/firmware.c
> @@ -0,0 +1,50 @@
> +// 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);
> +}
> diff --git a/drivers/net/wireless/ath/wcn36xx/firmware.h b/drivers/net/wireless/ath/wcn36xx/firmware.h
> new file mode 100644
> index 000000000000..552c0e9325e1
> --- /dev/null
> +++ b/drivers/net/wireless/ath/wcn36xx/firmware.h
> @@ -0,0 +1,82 @@
> +/* 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_ */
> +
> diff --git a/drivers/net/wireless/ath/wcn36xx/hal.h b/drivers/net/wireless/ath/wcn36xx/hal.h
> index 5e48c97682c2..5c45b23c7880 100644
> --- a/drivers/net/wireless/ath/wcn36xx/hal.h
> +++ b/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 {
> diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
> index efd776b20e60..af62911a4659 100644
> --- a/drivers/net/wireless/ath/wcn36xx/main.c
> +++ b/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);
> diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
> index 88ee92be8562..d2a994fee812 100644
> --- a/drivers/net/wireless/ath/wcn36xx/smd.c
> +++ b/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);
> diff --git a/drivers/net/wireless/ath/wcn36xx/smd.h b/drivers/net/wireless/ath/wcn36xx/smd.h
> index 186dad4fe80e..cf15cde2a364 100644
> --- a/drivers/net/wireless/ath/wcn36xx/smd.h
> +++ b/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,
> --
> 2.36.1
>
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