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Date: Mon, 6 Mar 2017 10:31:42 +0100
From: Arend Van Spriel <arend.vanspriel@...adcom.com>
To: Arnd Bergmann <arnd@...db.de>, kasan-dev@...glegroups.com
Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>,
Alexander Potapenko <glider@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-wireless@...r.kernel.org,
kernel-build-reports@...ts.linaro.org,
"David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH 09/26] brcmsmac: split up wlc_phy_workarounds_nphy
On 2-3-2017 17:38, Arnd Bergmann wrote:
> The stack consumption in this driver is still relatively high, with one
> remaining warning if the warning level is lowered to 1536 bytes:
>
> drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c:17135:1: error: the frame size of 1880 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]
>
> The affected function is actually a collection of three separate implementations,
> and each of them is fairly large by itself. Splitting them up is done easily
> and improves readability at the same time.
>
> I'm leaving the original indentation to make the review easier.
Thanks ;-)
Acked-by: Arend van Spriel <arend.vanspriel@...adcom.com>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> .../broadcom/brcm80211/brcmsmac/phy/phy_n.c | 178 ++++++++++++---------
> 1 file changed, 104 insertions(+), 74 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c
> index 48a4df488d75..d76c092bb6b4 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_n.c
> @@ -16061,52 +16061,8 @@ static void wlc_phy_workarounds_nphy_gainctrl(struct brcms_phy *pi)
> }
> }
>
> -static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> +static void wlc_phy_workarounds_nphy_rev7(struct brcms_phy *pi)
> {
> - static const u8 rfseq_rx2tx_events[] = {
> - NPHY_RFSEQ_CMD_NOP,
> - NPHY_RFSEQ_CMD_RXG_FBW,
> - NPHY_RFSEQ_CMD_TR_SWITCH,
> - NPHY_RFSEQ_CMD_CLR_HIQ_DIS,
> - NPHY_RFSEQ_CMD_RXPD_TXPD,
> - NPHY_RFSEQ_CMD_TX_GAIN,
> - NPHY_RFSEQ_CMD_EXT_PA
> - };
> - u8 rfseq_rx2tx_dlys[] = { 8, 6, 6, 2, 4, 60, 1 };
> - static const u8 rfseq_tx2rx_events[] = {
> - NPHY_RFSEQ_CMD_NOP,
> - NPHY_RFSEQ_CMD_EXT_PA,
> - NPHY_RFSEQ_CMD_TX_GAIN,
> - NPHY_RFSEQ_CMD_RXPD_TXPD,
> - NPHY_RFSEQ_CMD_TR_SWITCH,
> - NPHY_RFSEQ_CMD_RXG_FBW,
> - NPHY_RFSEQ_CMD_CLR_HIQ_DIS
> - };
> - static const u8 rfseq_tx2rx_dlys[] = { 8, 6, 2, 4, 4, 6, 1 };
> - static const u8 rfseq_tx2rx_events_rev3[] = {
> - NPHY_REV3_RFSEQ_CMD_EXT_PA,
> - NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
> - NPHY_REV3_RFSEQ_CMD_TX_GAIN,
> - NPHY_REV3_RFSEQ_CMD_RXPD_TXPD,
> - NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
> - NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> - NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
> - NPHY_REV3_RFSEQ_CMD_END
> - };
> - static const u8 rfseq_tx2rx_dlys_rev3[] = { 8, 4, 2, 2, 4, 4, 6, 1 };
> - u8 rfseq_rx2tx_events_rev3[] = {
> - NPHY_REV3_RFSEQ_CMD_NOP,
> - NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> - NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
> - NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
> - NPHY_REV3_RFSEQ_CMD_RXPD_TXPD,
> - NPHY_REV3_RFSEQ_CMD_TX_GAIN,
> - NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
> - NPHY_REV3_RFSEQ_CMD_EXT_PA,
> - NPHY_REV3_RFSEQ_CMD_END
> - };
> - u8 rfseq_rx2tx_dlys_rev3[] = { 8, 6, 6, 4, 4, 18, 42, 1, 1 };
> -
> static const u8 rfseq_rx2tx_events_rev3_ipa[] = {
> NPHY_REV3_RFSEQ_CMD_NOP,
> NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> @@ -16120,29 +16076,15 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> };
> static const u8 rfseq_rx2tx_dlys_rev3_ipa[] = { 8, 6, 6, 4, 4, 16, 43, 1, 1 };
> static const u16 rfseq_rx2tx_dacbufpu_rev7[] = { 0x10f, 0x10f };
> -
> - s16 alpha0, alpha1, alpha2;
> - s16 beta0, beta1, beta2;
> - u32 leg_data_weights, ht_data_weights, nss1_data_weights,
> - stbc_data_weights;
> + u32 leg_data_weights;
> u8 chan_freq_range = 0;
> static const u16 dac_control = 0x0002;
> u16 aux_adc_vmid_rev7_core0[] = { 0x8e, 0x96, 0x96, 0x96 };
> u16 aux_adc_vmid_rev7_core1[] = { 0x8f, 0x9f, 0x9f, 0x96 };
> - u16 aux_adc_vmid_rev4[] = { 0xa2, 0xb4, 0xb4, 0x89 };
> - u16 aux_adc_vmid_rev3[] = { 0xa2, 0xb4, 0xb4, 0x89 };
> - u16 *aux_adc_vmid;
> u16 aux_adc_gain_rev7[] = { 0x02, 0x02, 0x02, 0x02 };
> - u16 aux_adc_gain_rev4[] = { 0x02, 0x02, 0x02, 0x00 };
> - u16 aux_adc_gain_rev3[] = { 0x02, 0x02, 0x02, 0x00 };
> - u16 *aux_adc_gain;
> - static const u16 sk_adc_vmid[] = { 0xb4, 0xb4, 0xb4, 0x24 };
> - static const u16 sk_adc_gain[] = { 0x02, 0x02, 0x02, 0x02 };
> s32 min_nvar_val = 0x18d;
> s32 min_nvar_offset_6mbps = 20;
> u8 pdetrange;
> - u8 triso;
> - u16 regval;
> u16 afectrl_adc_ctrl1_rev7 = 0x20;
> u16 afectrl_adc_ctrl2_rev7 = 0x0;
> u16 rfseq_rx2tx_lpf_h_hpc_rev7 = 0x77;
> @@ -16171,17 +16113,6 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> u16 freq;
> int coreNum;
>
> - if (CHSPEC_IS5G(pi->radio_chanspec))
> - wlc_phy_classifier_nphy(pi, NPHY_ClassifierCtrl_cck_en, 0);
> - else
> - wlc_phy_classifier_nphy(pi, NPHY_ClassifierCtrl_cck_en, 1);
> -
> - if (pi->phyhang_avoid)
> - wlc_phy_stay_in_carriersearch_nphy(pi, true);
> -
> - or_phy_reg(pi, 0xb1, NPHY_IQFlip_ADC1 | NPHY_IQFlip_ADC2);
> -
> - if (NREV_GE(pi->pubpi.phy_rev, 7)) {
>
> if (NREV_IS(pi->pubpi.phy_rev, 7)) {
> mod_phy_reg(pi, 0x221, (0x1 << 4), (1 << 4));
> @@ -16703,8 +16634,62 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> &aux_adc_gain_rev7);
> wlc_phy_table_write_nphy(pi, NPHY_TBL_ID_AFECTRL, 4, 0x1c, 16,
> &aux_adc_gain_rev7);
> +}
>
> - } else if (NREV_GE(pi->pubpi.phy_rev, 3)) {
> +static void wlc_phy_workarounds_nphy_rev3(struct brcms_phy *pi)
> +{
> + static const u8 rfseq_tx2rx_events_rev3[] = {
> + NPHY_REV3_RFSEQ_CMD_EXT_PA,
> + NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
> + NPHY_REV3_RFSEQ_CMD_TX_GAIN,
> + NPHY_REV3_RFSEQ_CMD_RXPD_TXPD,
> + NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
> + NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> + NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
> + NPHY_REV3_RFSEQ_CMD_END
> + };
> + static const u8 rfseq_tx2rx_dlys_rev3[] = { 8, 4, 2, 2, 4, 4, 6, 1 };
> + u8 rfseq_rx2tx_events_rev3[] = {
> + NPHY_REV3_RFSEQ_CMD_NOP,
> + NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> + NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
> + NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
> + NPHY_REV3_RFSEQ_CMD_RXPD_TXPD,
> + NPHY_REV3_RFSEQ_CMD_TX_GAIN,
> + NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
> + NPHY_REV3_RFSEQ_CMD_EXT_PA,
> + NPHY_REV3_RFSEQ_CMD_END
> + };
> + u8 rfseq_rx2tx_dlys_rev3[] = { 8, 6, 6, 4, 4, 18, 42, 1, 1 };
> + static const u8 rfseq_rx2tx_events_rev3_ipa[] = {
> + NPHY_REV3_RFSEQ_CMD_NOP,
> + NPHY_REV3_RFSEQ_CMD_RXG_FBW,
> + NPHY_REV3_RFSEQ_CMD_TR_SWITCH,
> + NPHY_REV3_RFSEQ_CMD_CLR_HIQ_DIS,
> + NPHY_REV3_RFSEQ_CMD_RXPD_TXPD,
> + NPHY_REV3_RFSEQ_CMD_TX_GAIN,
> + NPHY_REV3_RFSEQ_CMD_CLR_RXRX_BIAS,
> + NPHY_REV3_RFSEQ_CMD_INT_PA_PU,
> + NPHY_REV3_RFSEQ_CMD_END
> + };
> + static const u8 rfseq_rx2tx_dlys_rev3_ipa[] = { 8, 6, 6, 4, 4, 16, 43, 1, 1 };
> + s16 alpha0, alpha1, alpha2;
> + s16 beta0, beta1, beta2;
> + u32 leg_data_weights, ht_data_weights, nss1_data_weights,
> + stbc_data_weights;
> + u8 chan_freq_range = 0;
> + static const u16 dac_control = 0x0002;
> + u16 aux_adc_vmid_rev4[] = { 0xa2, 0xb4, 0xb4, 0x89 };
> + u16 aux_adc_vmid_rev3[] = { 0xa2, 0xb4, 0xb4, 0x89 };
> + u16 *aux_adc_vmid;
> + u16 aux_adc_gain_rev4[] = { 0x02, 0x02, 0x02, 0x00 };
> + u16 aux_adc_gain_rev3[] = { 0x02, 0x02, 0x02, 0x00 };
> + u16 *aux_adc_gain;
> + static const u16 sk_adc_vmid[] = { 0xb4, 0xb4, 0xb4, 0x24 };
> + static const u16 sk_adc_gain[] = { 0x02, 0x02, 0x02, 0x02 };
> + s32 min_nvar_val = 0x18d;
> + u8 pdetrange;
> + u8 triso;
>
> write_phy_reg(pi, 0x23f, 0x1f8);
> write_phy_reg(pi, 0x240, 0x1f8);
> @@ -17030,7 +17015,33 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> MHF4_BPHY_TXCORE0,
> MHF4_BPHY_TXCORE0, BRCM_BAND_ALL);
> }
> - } else {
> +}
> +
> +void wlc_phy_workarounds_nphy_rev1(struct brcms_phy *pi)
> +{
> + static const u8 rfseq_rx2tx_events[] = {
> + NPHY_RFSEQ_CMD_NOP,
> + NPHY_RFSEQ_CMD_RXG_FBW,
> + NPHY_RFSEQ_CMD_TR_SWITCH,
> + NPHY_RFSEQ_CMD_CLR_HIQ_DIS,
> + NPHY_RFSEQ_CMD_RXPD_TXPD,
> + NPHY_RFSEQ_CMD_TX_GAIN,
> + NPHY_RFSEQ_CMD_EXT_PA
> + };
> + u8 rfseq_rx2tx_dlys[] = { 8, 6, 6, 2, 4, 60, 1 };
> + static const u8 rfseq_tx2rx_events[] = {
> + NPHY_RFSEQ_CMD_NOP,
> + NPHY_RFSEQ_CMD_EXT_PA,
> + NPHY_RFSEQ_CMD_TX_GAIN,
> + NPHY_RFSEQ_CMD_RXPD_TXPD,
> + NPHY_RFSEQ_CMD_TR_SWITCH,
> + NPHY_RFSEQ_CMD_RXG_FBW,
> + NPHY_RFSEQ_CMD_CLR_HIQ_DIS
> + };
> + static const u8 rfseq_tx2rx_dlys[] = { 8, 6, 2, 4, 4, 6, 1 };
> + s16 alpha0, alpha1, alpha2;
> + s16 beta0, beta1, beta2;
> + u16 regval;
>
> if (pi->sh->boardflags2 & BFL2_SKWRKFEM_BRD ||
> (pi->sh->boardtype == 0x8b)) {
> @@ -17128,7 +17139,26 @@ static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> mod_phy_reg(pi, 0x221,
> NPHY_FORCESIG_DECODEGATEDCLKS,
> NPHY_FORCESIG_DECODEGATEDCLKS);
> - }
> +}
> +
> +static void wlc_phy_workarounds_nphy(struct brcms_phy *pi)
> +{
> + if (CHSPEC_IS5G(pi->radio_chanspec))
> + wlc_phy_classifier_nphy(pi, NPHY_ClassifierCtrl_cck_en, 0);
> + else
> + wlc_phy_classifier_nphy(pi, NPHY_ClassifierCtrl_cck_en, 1);
> +
> + if (pi->phyhang_avoid)
> + wlc_phy_stay_in_carriersearch_nphy(pi, true);
> +
> + or_phy_reg(pi, 0xb1, NPHY_IQFlip_ADC1 | NPHY_IQFlip_ADC2);
> +
> + if (NREV_GE(pi->pubpi.phy_rev, 7))
> + wlc_phy_workarounds_nphy_rev7(pi);
> + else if (NREV_GE(pi->pubpi.phy_rev, 3))
> + wlc_phy_workarounds_nphy_rev3(pi);
> + else
> + wlc_phy_workarounds_nphy_rev1(pi);
>
> if (pi->phyhang_avoid)
> wlc_phy_stay_in_carriersearch_nphy(pi, false);
>
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