From cb5e197696c98b4baed5df2dab251d211402a95e Mon Sep 17 00:00:00 2001 From: Rosen Penev Date: Thu, 22 May 2025 18:42:21 -0700 Subject: [PATCH] mac80211: ath9k: remove entropy patch This was replaced upstream with a proper rng device that feeds into /dev/random. No need for this anymore. Signed-off-by: Rosen Penev Link: https://github.com/openwrt/openwrt/pull/22766 Signed-off-by: Hauke Mehrtens --- .../ath9k/543-ath9k_entropy_from_adc.patch | 186 ------------------ 1 file changed, 186 deletions(-) delete mode 100644 package/kernel/mac80211/patches/ath9k/543-ath9k_entropy_from_adc.patch diff --git a/package/kernel/mac80211/patches/ath9k/543-ath9k_entropy_from_adc.patch b/package/kernel/mac80211/patches/ath9k/543-ath9k_entropy_from_adc.patch deleted file mode 100644 index 8966cca2b6..0000000000 --- a/package/kernel/mac80211/patches/ath9k/543-ath9k_entropy_from_adc.patch +++ /dev/null @@ -1,186 +0,0 @@ ---- a/drivers/net/wireless/ath/ath9k/hw.h -+++ b/drivers/net/wireless/ath/ath9k/hw.h -@@ -723,6 +723,7 @@ struct ath_spec_scan { - * @config_pci_powersave: - * @calibrate: periodic calibration for NF, ANI, IQ, ADC gain, ADC-DC - * -+ * @get_adc_entropy: get entropy from the raw ADC I/Q output - * @spectral_scan_config: set parameters for spectral scan and enable/disable it - * @spectral_scan_trigger: trigger a spectral scan run - * @spectral_scan_wait: wait for a spectral scan run to finish -@@ -745,6 +746,7 @@ struct ath_hw_ops { - struct ath_hw_antcomb_conf *antconf); - void (*antdiv_comb_conf_set)(struct ath_hw *ah, - struct ath_hw_antcomb_conf *antconf); -+ void (*get_adc_entropy)(struct ath_hw *ah, u8 *buf, size_t len); - void (*spectral_scan_config)(struct ath_hw *ah, - struct ath_spec_scan *param); - void (*spectral_scan_trigger)(struct ath_hw *ah); ---- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c -+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c -@@ -1915,6 +1915,26 @@ void ar9003_hw_init_rate_txpower(struct - } - } - -+static void ar9003_hw_get_adc_entropy(struct ath_hw *ah, u8 *buf, size_t len) -+{ -+ int i, j; -+ -+ REG_RMW_FIELD(ah, AR_PHY_TEST(ah), AR_PHY_TEST_BBB_OBS_SEL, 1); -+ REG_CLR_BIT(ah, AR_PHY_TEST(ah), AR_PHY_TEST_RX_OBS_SEL_BIT5); -+ REG_RMW_FIELD(ah, AR_PHY_TEST_CTL_STATUS(ah), AR_PHY_TEST_CTL_RX_OBS_SEL, 0); -+ -+ memset(buf, 0, len); -+ for (i = 0; i < len; i++) { -+ for (j = 0; j < 4; j++) { -+ u32 regval = REG_READ(ah, AR_PHY_TST_ADC); -+ -+ buf[i] <<= 2; -+ buf[i] |= (regval & 1) | ((regval & BIT(10)) >> 9); -+ udelay(1); -+ } -+ } -+} -+ - void ar9003_hw_attach_phy_ops(struct ath_hw *ah) - { - struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); -@@ -1951,6 +1971,7 @@ void ar9003_hw_attach_phy_ops(struct ath - priv_ops->set_radar_params = ar9003_hw_set_radar_params; - priv_ops->fast_chan_change = ar9003_hw_fast_chan_change; - -+ ops->get_adc_entropy = ar9003_hw_get_adc_entropy; - ops->antdiv_comb_conf_get = ar9003_hw_antdiv_comb_conf_get; - ops->antdiv_comb_conf_set = ar9003_hw_antdiv_comb_conf_set; - ops->spectral_scan_config = ar9003_hw_spectral_scan_config; ---- a/drivers/net/wireless/ath/ath9k/init.c -+++ b/drivers/net/wireless/ath/ath9k/init.c -@@ -825,7 +825,8 @@ static void ath9k_init_txpower_limits(st - if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) - ath9k_init_band_txpower(sc, NL80211_BAND_5GHZ); - -- ah->curchan = curchan; -+ if (curchan) -+ ah->curchan = curchan; - } - - static const struct ieee80211_iface_limit if_limits[] = { -@@ -1003,6 +1004,18 @@ static void ath9k_set_hw_capab(struct at - wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); - } - -+static void ath_get_initial_entropy(struct ath_softc *sc) -+{ -+ struct ath_hw *ah = sc->sc_ah; -+ char buf[256]; -+ -+ /* reuse last channel initialized by the tx power test */ -+ ath9k_hw_reset(ah, ah->curchan, NULL, false); -+ -+ ath9k_hw_get_adc_entropy(ah, buf, sizeof(buf)); -+ add_device_randomness(buf, sizeof(buf)); -+} -+ - int ath9k_init_device(u16 devid, struct ath_softc *sc, - const struct ath_bus_ops *bus_ops) - { -@@ -1050,6 +1063,8 @@ int ath9k_init_device(u16 devid, struct - - wiphy_read_of_freq_limits(hw->wiphy); - -+ ath_get_initial_entropy(sc); -+ - /* Register with mac80211 */ - error = ieee80211_register_hw(hw); - if (error) ---- a/drivers/net/wireless/ath/ath9k/hw-ops.h -+++ b/drivers/net/wireless/ath/ath9k/hw-ops.h -@@ -100,6 +100,12 @@ static inline void ath9k_hw_tx99_set_txp - ath9k_hw_ops(ah)->tx99_set_txpower(ah, power); - } - -+static inline void ath9k_hw_get_adc_entropy(struct ath_hw *ah, -+ u8 *buf, size_t len) -+{ -+ ath9k_hw_ops(ah)->get_adc_entropy(ah, buf, len); -+} -+ - #ifdef CPTCFG_ATH9K_BTCOEX_SUPPORT - - static inline void ath9k_hw_set_bt_ant_diversity(struct ath_hw *ah, bool enable) ---- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c -+++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c -@@ -1340,9 +1340,30 @@ void ar5008_hw_init_rate_txpower(struct - } - } - -+static void ar5008_hw_get_adc_entropy(struct ath_hw *ah, u8 *buf, size_t len) -+{ -+ int i, j; -+ -+ REG_RMW_FIELD(ah, AR_PHY_TEST, AR_PHY_TEST_BBB_OBS_SEL, 1); -+ REG_CLR_BIT(ah, AR_PHY_TEST, AR_PHY_TEST_RX_OBS_SEL_BIT5); -+ REG_RMW_FIELD(ah, AR_PHY_TEST2, AR_PHY_TEST2_RX_OBS_SEL, 0); -+ -+ memset(buf, 0, len); -+ for (i = 0; i < len; i++) { -+ for (j = 0; j < 4; j++) { -+ u32 regval = REG_READ(ah, AR_PHY_TST_ADC); -+ -+ buf[i] <<= 2; -+ buf[i] |= (regval & 1) | ((regval & BIT(9)) >> 8); -+ udelay(1); -+ } -+ } -+} -+ - int ar5008_hw_attach_phy_ops(struct ath_hw *ah) - { - struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah); -+ struct ath_hw_ops *ops = ath9k_hw_ops(ah); - static const u32 ar5416_cca_regs[6] = { - AR_PHY_CCA, - AR_PHY_CH1_CCA, -@@ -1357,6 +1378,8 @@ int ar5008_hw_attach_phy_ops(struct ath_ - if (ret) - return ret; - -+ ops->get_adc_entropy = ar5008_hw_get_adc_entropy; -+ - priv_ops->rf_set_freq = ar5008_hw_set_channel; - priv_ops->spur_mitigate_freq = ar5008_hw_spur_mitigate; - ---- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h -+++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h -@@ -20,6 +20,12 @@ - #define PHY_AGC_CLR 0x10000000 - #define RFSILENT_BB 0x00002000 - -+#define AR_PHY_TEST_BBB_OBS_SEL 0x780000 -+#define AR_PHY_TEST_BBB_OBS_SEL_S 19 -+ -+#define AR_PHY_TEST_RX_OBS_SEL_BIT5_S 23 -+#define AR_PHY_TEST_RX_OBS_SEL_BIT5 (1 << AR_PHY_TEST_RX_OBS_SEL_BIT5_S) -+ - #define AR_PHY_TURBO 0x9804 - #define AR_PHY_FC_TURBO_MODE 0x00000001 - #define AR_PHY_FC_TURBO_SHORT 0x00000002 -@@ -36,6 +42,9 @@ - - #define AR_PHY_TEST2 0x9808 - -+#define AR_PHY_TEST2_RX_OBS_SEL 0x3C00 -+#define AR_PHY_TEST2_RX_OBS_SEL_S 10 -+ - #define AR_PHY_TIMING2 0x9810 - #define AR_PHY_TIMING3 0x9814 - #define AR_PHY_TIMING3_DSC_MAN 0xFFFE0000 -@@ -393,6 +402,8 @@ - #define AR_PHY_RFBUS_GRANT 0x9C20 - #define AR_PHY_RFBUS_GRANT_EN 0x00000001 - -+#define AR_PHY_TST_ADC 0x9C24 -+ - #define AR_PHY_CHAN_INFO_GAIN_DIFF 0x9CF4 - #define AR_PHY_CHAN_INFO_GAIN_DIFF_UPPER_LIMIT 320 -