From: Michael Nemanov <Michael.Nemanov@xxxxxx> General code and structures. Notably: cc33xx_irq - Handles IRQs received from the device. process_core_status - Core status is a new concept in CC33xx. it's a structure that is appended to each transfer from the device and contains its most up-to-date status report (IRQs, buffers, etc.). See struct core_status for details. process_event_and_cmd_result - Responses to driver commands and FW events both arrive asynchronously. Therefore, driver cannot know what he read from HW until inspecting the payload. This code reads and dispatches the data accordingly. cc33xx_recovery_work - Driver supports basic recovery on FW crash and other illegal conditions. This implements the recovery flow (Remove all vifs, turn device off and on, download FW, let ieee80211_restart_hw do the rest). irq_deferred_work - Does irq-related work that requires holding the cc->mutex. Thisd is mostly in response to HW's Tx/Rx IRQs. cc33xx_nvs_cb - Callback for the NVS FW request API. Similar to wlcore, this is where the init of the HW is performed. cc33xx_load_ini_bin_file - Loads a configuration file from user-space via the request FW API. The structure is described in a separate patch. cc33xx_op_X - MAC80211 operation handlers. --- drivers/net/wireless/ti/cc33xx/main.c | 5854 +++++++++++++++++++++++++ 1 file changed, 5854 insertions(+) create mode 100644 drivers/net/wireless/ti/cc33xx/main.c diff --git a/drivers/net/wireless/ti/cc33xx/main.c b/drivers/net/wireless/ti/cc33xx/main.c new file mode 100644 index 000000000000..56128fd54e05 --- /dev/null +++ b/drivers/net/wireless/ti/cc33xx/main.c @@ -0,0 +1,5854 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/ + */ + +#include <linux/mod_devicetable.h> +#include <linux/platform_device.h> +#include <linux/firmware.h> +#include <linux/irq.h> +#include <linux/pm_wakeirq.h> + +#include "../net/mac80211/ieee80211_i.h" + +#include "acx.h" +#include "boot.h" +#include "io.h" +#include "tx.h" +#include "ps.h" +#include "init.h" +#include "testmode.h" +#include "scan.h" +#include "event.h" + +#define CC33XX_FW_RX_PACKET_RAM (9 * 1024) +static int no_recovery = -1; + +u32 cc33xx_debug_level = DEBUG_NO_DATAPATH; + +/* HT cap appropriate for wide channels in 2Ghz */ +static struct ieee80211_sta_ht_cap cc33xx_siso40_ht_cap_2ghz = { + .cap = IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | + IEEE80211_HT_CAP_SUP_WIDTH_20_40 | IEEE80211_HT_CAP_DSSSCCK40 | + IEEE80211_HT_CAP_GRN_FLD, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, + .mcs = { + .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, + .rx_highest = cpu_to_le16(150), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + }, +}; + +/* HT cap appropriate for wide channels in 5Ghz */ +static struct ieee80211_sta_ht_cap cc33xx_siso40_ht_cap_5ghz = { + .cap = IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 | + IEEE80211_HT_CAP_SUP_WIDTH_20_40 | + IEEE80211_HT_CAP_GRN_FLD, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, + .mcs = { + .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, + .rx_highest = cpu_to_le16(150), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + }, +}; + +/* HT cap appropriate for SISO 20 */ +static struct ieee80211_sta_ht_cap cc33xx_siso20_ht_cap = { + .cap = IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_MAX_AMSDU, + .ht_supported = true, + .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K, + .ampdu_density = IEEE80211_HT_MPDU_DENSITY_16, + .mcs = { + .rx_mask = { 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, + .rx_highest = cpu_to_le16(72), + .tx_params = IEEE80211_HT_MCS_TX_DEFINED, + }, +}; + +#ifdef CONFIG_MAC80211_MESH +static const struct ieee80211_iface_limit cc33xx_iface_limits[] = { + { + .max = 2, + .types = BIT(NL80211_IFTYPE_STATION) + | BIT(NL80211_IFTYPE_P2P_CLIENT), + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_P2P_GO) + | BIT(NL80211_IFTYPE_MESH_POINT) + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_P2P_DEVICE), + }, +}; + +static inline u16 cc33xx_wiphy_interface_modes(void) +{ + return BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_MESH_POINT) | BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_DEVICE); +} +#else +static const struct ieee80211_iface_limit cc33xx_iface_limits[] = { + { + .max = 2, + .types = BIT(NL80211_IFTYPE_STATION) + | BIT(NL80211_IFTYPE_P2P_CLIENT), + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_AP) | BIT(NL80211_IFTYPE_P2P_GO) + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_P2P_DEVICE), + }, +}; + +static inline u16 cc33xx_wiphy_interface_modes(void) +{ + return BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_DEVICE); +} +#endif /* CONFIG_MAC80211_MESH */ + +static const struct ieee80211_iface_combination +cc33xx_iface_combinations[] = { + { + .max_interfaces = 3, + .limits = cc33xx_iface_limits, + .n_limits = ARRAY_SIZE(cc33xx_iface_limits), + .num_different_channels = 2, + } +}; + +static const u8 cc33xx_rate_to_idx_2ghz[] = { + CONF_HW_RXTX_RATE_UNSUPPORTED, + 0, /* RATE_INDEX_1MBPS */ + 1, /* RATE_INDEX_2MBPS */ + 2, /* RATE_INDEX_5_5MBPS */ + 3, /* RATE_INDEX_11MBPS */ + 4, /* RATE_INDEX_6MBPS */ + 5, /* RATE_INDEX_9MBPS */ + 6, /* RATE_INDEX_12MBPS */ + 7, /* RATE_INDEX_18MBPS */ + 8, /* RATE_INDEX_24MBPS */ + 9, /* RATE_INDEX_36MBPS */ + 10, /* RATE_INDEX_48MBPS */ + 11, /* RATE_INDEX_54MBPS */ + 0, /* RATE_INDEX_MCS0 */ + 1, /* RATE_INDEX_MCS1 */ + 2, /* RATE_INDEX_MCS2 */ + 3, /* RATE_INDEX_MCS3 */ + 4, /* RATE_INDEX_MCS4 */ + 5, /* RATE_INDEX_MCS5 */ + 6, /* RATE_INDEX_MCS6 */ + 7 /* RATE_INDEX_MCS7 */ +}; + +static const u8 cc33xx_rate_to_idx_5ghz[] = { + CONF_HW_RXTX_RATE_UNSUPPORTED, + CONF_HW_RXTX_RATE_UNSUPPORTED, /* RATE_INDEX_1MBPS */ + CONF_HW_RXTX_RATE_UNSUPPORTED, /* RATE_INDEX_2MBPS */ + CONF_HW_RXTX_RATE_UNSUPPORTED, /* RATE_INDEX_5_5MBPS */ + CONF_HW_RXTX_RATE_UNSUPPORTED, /* RATE_INDEX_11MBPS */ + 0, /* RATE_INDEX_6MBPS */ + 1, /* RATE_INDEX_9MBPS */ + 2, /* RATE_INDEX_12MBPS */ + 3, /* RATE_INDEX_18MBPS */ + 4, /* RATE_INDEX_24MBPS */ + 5, /* RATE_INDEX_36MBPS */ + 6, /* RATE_INDEX_48MBPS */ + 7, /* RATE_INDEX_54MBPS */ + 0, /* RATE_INDEX_MCS0 */ + 1, /* RATE_INDEX_MCS1 */ + 2, /* RATE_INDEX_MCS2 */ + 3, /* RATE_INDEX_MCS3 */ + 4, /* RATE_INDEX_MCS4 */ + 5, /* RATE_INDEX_MCS5 */ + 6, /* RATE_INDEX_MCS6 */ + 7 /* RATE_INDEX_MCS7 */ +}; + +static const u8 *cc33xx_band_rate_to_idx[] = { + [NL80211_BAND_2GHZ] = cc33xx_rate_to_idx_2ghz, + [NL80211_BAND_5GHZ] = cc33xx_rate_to_idx_5ghz +}; + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_rate cc33xx_rates[] = { + { .bitrate = 10, + .hw_value = CONF_HW_BIT_RATE_1MBPS, + .hw_value_short = CONF_HW_BIT_RATE_1MBPS, }, + { .bitrate = 20, + .hw_value = CONF_HW_BIT_RATE_2MBPS, + .hw_value_short = CONF_HW_BIT_RATE_2MBPS, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 55, + .hw_value = CONF_HW_BIT_RATE_5_5MBPS, + .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 110, + .hw_value = CONF_HW_BIT_RATE_11MBPS, + .hw_value_short = CONF_HW_BIT_RATE_11MBPS, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 60, + .hw_value = CONF_HW_BIT_RATE_6MBPS, + .hw_value_short = CONF_HW_BIT_RATE_6MBPS, }, + { .bitrate = 90, + .hw_value = CONF_HW_BIT_RATE_9MBPS, + .hw_value_short = CONF_HW_BIT_RATE_9MBPS, }, + { .bitrate = 120, + .hw_value = CONF_HW_BIT_RATE_12MBPS, + .hw_value_short = CONF_HW_BIT_RATE_12MBPS, }, + { .bitrate = 180, + .hw_value = CONF_HW_BIT_RATE_18MBPS, + .hw_value_short = CONF_HW_BIT_RATE_18MBPS, }, + { .bitrate = 240, + .hw_value = CONF_HW_BIT_RATE_24MBPS, + .hw_value_short = CONF_HW_BIT_RATE_24MBPS, }, + { .bitrate = 360, + .hw_value = CONF_HW_BIT_RATE_36MBPS, + .hw_value_short = CONF_HW_BIT_RATE_36MBPS, }, + { .bitrate = 480, + .hw_value = CONF_HW_BIT_RATE_48MBPS, + .hw_value_short = CONF_HW_BIT_RATE_48MBPS, }, + { .bitrate = 540, + .hw_value = CONF_HW_BIT_RATE_54MBPS, + .hw_value_short = CONF_HW_BIT_RATE_54MBPS, }, +}; + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_channel cc33xx_channels[] = { + { .hw_value = 1, .center_freq = 2412, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 2, .center_freq = 2417, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 3, .center_freq = 2422, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 4, .center_freq = 2427, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 5, .center_freq = 2432, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 6, .center_freq = 2437, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 7, .center_freq = 2442, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 8, .center_freq = 2447, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 9, .center_freq = 2452, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 10, .center_freq = 2457, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 11, .center_freq = 2462, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 12, .center_freq = 2467, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 13, .center_freq = 2472, .max_power = CC33XX_MAX_TXPWR }, +}; + +static struct ieee80211_sband_iftype_data iftype_data_2ghz[] = {{ + .types_mask = BIT(NL80211_IFTYPE_STATION), + .he_cap = { + .has_he = true, + .he_cap_elem = { + .mac_cap_info[0] = + IEEE80211_HE_MAC_CAP0_HTC_HE | + IEEE80211_HE_MAC_CAP0_TWT_REQ, + .mac_cap_info[1] = + IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US | + IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8, + .mac_cap_info[2] = + IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP | + IEEE80211_HE_MAC_CAP2_ALL_ACK | + IEEE80211_HE_MAC_CAP2_TRS | + IEEE80211_HE_MAC_CAP2_BSR | + IEEE80211_HE_MAC_CAP2_ACK_EN, + .mac_cap_info[3] = + IEEE80211_HE_MAC_CAP3_OMI_CONTROL | + IEEE80211_HE_MAC_CAP3_RX_CTRL_FRAME_TO_MULTIBSS, + .mac_cap_info[4] = + IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU | + IEEE80211_HE_MAC_CAP4_NDP_FB_REP | + IEEE80211_HE_MAC_CAP4_MULTI_TID_AGG_TX_QOS_B39, + .mac_cap_info[5] = + IEEE80211_HE_MAC_CAP5_HT_VHT_TRIG_FRAME_RX, + .phy_cap_info[0] = 0, + .phy_cap_info[1] = + IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A | + IEEE80211_HE_PHY_CAP1_HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US, + .phy_cap_info[2] = + IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US, + .phy_cap_info[3] = + IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM | + IEEE80211_HE_PHY_CAP3_DCM_MAX_TX_NSS_1 | + IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM | + IEEE80211_HE_PHY_CAP3_DCM_MAX_RX_NSS_1, + .phy_cap_info[4] = + IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE | + IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_UNDER_80MHZ_4, + .phy_cap_info[5] = + IEEE80211_HE_PHY_CAP5_NG16_SU_FEEDBACK | + IEEE80211_HE_PHY_CAP5_NG16_MU_FEEDBACK, + .phy_cap_info[6] = + IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_42_SU | + IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_75_MU | + IEEE80211_HE_PHY_CAP6_TRIG_SU_BEAMFORMING_FB | + IEEE80211_HE_PHY_CAP6_TRIG_MU_BEAMFORMING_PARTIAL_BW_FB | + IEEE80211_HE_PHY_CAP6_TRIG_CQI_FB | + IEEE80211_HE_PHY_CAP6_PARTIAL_BW_EXT_RANGE, + .phy_cap_info[7] = + IEEE80211_HE_PHY_CAP7_HE_SU_MU_PPDU_4XLTF_AND_08_US_GI, + .phy_cap_info[8] = + IEEE80211_HE_PHY_CAP8_HE_ER_SU_PPDU_4XLTF_AND_08_US_GI | + IEEE80211_HE_PHY_CAP8_20MHZ_IN_40MHZ_HE_PPDU_IN_2G | + IEEE80211_HE_PHY_CAP8_HE_ER_SU_1XLTF_AND_08_US_GI, + .phy_cap_info[9] = + IEEE80211_HE_PHY_CAP9_NON_TRIGGERED_CQI_FEEDBACK | + IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB | + IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB | + IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US, + }, + /* Set default Tx/Rx HE MCS NSS Support field. + * Indicate support for up to 2 spatial streams and all + * MCS, without any special cases + */ + .he_mcs_nss_supp = { + .rx_mcs_80 = cpu_to_le16(0xfffc), + .tx_mcs_80 = cpu_to_le16(0xfffc), + .rx_mcs_160 = cpu_to_le16(0xffff), + .tx_mcs_160 = cpu_to_le16(0xffff), + .rx_mcs_80p80 = cpu_to_le16(0xffff), + .tx_mcs_80p80 = cpu_to_le16(0xffff), + }, + /* Set default PPE thresholds, with PPET16 set to 0, + * PPET8 set to 7 + */ + .ppe_thres = {0xff, 0xff, 0xff, 0xff}, + }, +}}; + +/* can't be const, mac80211 writes to this */ +static struct ieee80211_supported_band cc33xx_band_2ghz = { + .channels = cc33xx_channels, + .n_channels = ARRAY_SIZE(cc33xx_channels), + .bitrates = cc33xx_rates, + .n_bitrates = ARRAY_SIZE(cc33xx_rates), + .iftype_data = iftype_data_2ghz, + .n_iftype_data = ARRAY_SIZE(iftype_data_2ghz), +}; + +/* 5 GHz data rates for cc33xx */ +static struct ieee80211_rate cc33xx_rates_5ghz[] = { + { .bitrate = 60, + .hw_value = CONF_HW_BIT_RATE_6MBPS, + .hw_value_short = CONF_HW_BIT_RATE_6MBPS, }, + { .bitrate = 90, + .hw_value = CONF_HW_BIT_RATE_9MBPS, + .hw_value_short = CONF_HW_BIT_RATE_9MBPS, }, + { .bitrate = 120, + .hw_value = CONF_HW_BIT_RATE_12MBPS, + .hw_value_short = CONF_HW_BIT_RATE_12MBPS, }, + { .bitrate = 180, + .hw_value = CONF_HW_BIT_RATE_18MBPS, + .hw_value_short = CONF_HW_BIT_RATE_18MBPS, }, + { .bitrate = 240, + .hw_value = CONF_HW_BIT_RATE_24MBPS, + .hw_value_short = CONF_HW_BIT_RATE_24MBPS, }, + { .bitrate = 360, + .hw_value = CONF_HW_BIT_RATE_36MBPS, + .hw_value_short = CONF_HW_BIT_RATE_36MBPS, }, + { .bitrate = 480, + .hw_value = CONF_HW_BIT_RATE_48MBPS, + .hw_value_short = CONF_HW_BIT_RATE_48MBPS, }, + { .bitrate = 540, + .hw_value = CONF_HW_BIT_RATE_54MBPS, + .hw_value_short = CONF_HW_BIT_RATE_54MBPS, }, +}; + +/* 5 GHz band channels for cc33xx */ +static struct ieee80211_channel cc33xx_channels_5ghz[] = { + { .hw_value = 36, .center_freq = 5180, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 40, .center_freq = 5200, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 44, .center_freq = 5220, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 48, .center_freq = 5240, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 52, .center_freq = 5260, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 56, .center_freq = 5280, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 60, .center_freq = 5300, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 64, .center_freq = 5320, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 100, .center_freq = 5500, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 104, .center_freq = 5520, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 108, .center_freq = 5540, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 112, .center_freq = 5560, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 116, .center_freq = 5580, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 120, .center_freq = 5600, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 124, .center_freq = 5620, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 128, .center_freq = 5640, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 132, .center_freq = 5660, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 136, .center_freq = 5680, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 140, .center_freq = 5700, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 149, .center_freq = 5745, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 153, .center_freq = 5765, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 157, .center_freq = 5785, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 161, .center_freq = 5805, .max_power = CC33XX_MAX_TXPWR }, + { .hw_value = 165, .center_freq = 5825, .max_power = CC33XX_MAX_TXPWR }, +}; + +static struct ieee80211_sband_iftype_data iftype_data_5ghz[] = {{ + .types_mask = BIT(NL80211_IFTYPE_STATION), + .he_cap = { + .has_he = true, + .he_cap_elem = { + .mac_cap_info[0] = + IEEE80211_HE_MAC_CAP0_HTC_HE | + IEEE80211_HE_MAC_CAP0_TWT_REQ, + .mac_cap_info[1] = + IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US | + IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8, + .mac_cap_info[2] = + IEEE80211_HE_MAC_CAP2_32BIT_BA_BITMAP | + IEEE80211_HE_MAC_CAP2_ALL_ACK | + IEEE80211_HE_MAC_CAP2_TRS | + IEEE80211_HE_MAC_CAP2_BSR | + IEEE80211_HE_MAC_CAP2_ACK_EN, + .mac_cap_info[3] = + IEEE80211_HE_MAC_CAP3_OMI_CONTROL | + IEEE80211_HE_MAC_CAP3_RX_CTRL_FRAME_TO_MULTIBSS, + .mac_cap_info[4] = + IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU | + IEEE80211_HE_MAC_CAP4_NDP_FB_REP | + IEEE80211_HE_MAC_CAP4_MULTI_TID_AGG_TX_QOS_B39, + .mac_cap_info[5] = + IEEE80211_HE_MAC_CAP5_HT_VHT_TRIG_FRAME_RX, + .phy_cap_info[0] = 0, + .phy_cap_info[1] = + IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A | + IEEE80211_HE_PHY_CAP1_HE_LTF_AND_GI_FOR_HE_PPDUS_0_8US, + .phy_cap_info[2] = + IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US, + .phy_cap_info[3] = + IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_NO_DCM | + IEEE80211_HE_PHY_CAP3_DCM_MAX_TX_NSS_1 | + IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_16_QAM | + IEEE80211_HE_PHY_CAP3_DCM_MAX_RX_NSS_1, + .phy_cap_info[4] = + IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE | + IEEE80211_HE_PHY_CAP4_BEAMFORMEE_MAX_STS_UNDER_80MHZ_4, + .phy_cap_info[5] = + IEEE80211_HE_PHY_CAP5_NG16_SU_FEEDBACK | + IEEE80211_HE_PHY_CAP5_NG16_MU_FEEDBACK, + .phy_cap_info[6] = + IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_42_SU | + IEEE80211_HE_PHY_CAP6_CODEBOOK_SIZE_75_MU | + IEEE80211_HE_PHY_CAP6_TRIG_SU_BEAMFORMING_FB | + IEEE80211_HE_PHY_CAP6_TRIG_MU_BEAMFORMING_PARTIAL_BW_FB | + IEEE80211_HE_PHY_CAP6_TRIG_CQI_FB | + IEEE80211_HE_PHY_CAP6_PARTIAL_BW_EXT_RANGE, + .phy_cap_info[7] = + IEEE80211_HE_PHY_CAP7_HE_SU_MU_PPDU_4XLTF_AND_08_US_GI, + .phy_cap_info[8] = + IEEE80211_HE_PHY_CAP8_HE_ER_SU_PPDU_4XLTF_AND_08_US_GI | + IEEE80211_HE_PHY_CAP8_20MHZ_IN_40MHZ_HE_PPDU_IN_2G | + IEEE80211_HE_PHY_CAP8_HE_ER_SU_1XLTF_AND_08_US_GI, + .phy_cap_info[9] = + IEEE80211_HE_PHY_CAP9_NON_TRIGGERED_CQI_FEEDBACK | + IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_COMP_SIGB | + IEEE80211_HE_PHY_CAP9_RX_FULL_BW_SU_USING_MU_WITH_NON_COMP_SIGB | + IEEE80211_HE_PHY_CAP9_NOMINAL_PKT_PADDING_16US, + }, + /* Set default Tx/Rx HE MCS NSS Support field. + * Indicate support for up to 2 spatial streams and all + * MCS, without any special cases + */ + .he_mcs_nss_supp = { + .rx_mcs_80 = cpu_to_le16(0xfffc), + .tx_mcs_80 = cpu_to_le16(0xfffc), + .rx_mcs_160 = cpu_to_le16(0xffff), + .tx_mcs_160 = cpu_to_le16(0xffff), + .rx_mcs_80p80 = cpu_to_le16(0xffff), + .tx_mcs_80p80 = cpu_to_le16(0xffff), + }, + /* Set default PPE thresholds, with PPET16 set to 0, + * PPET8 set to 7 + */ + .ppe_thres = {0xff, 0xff, 0xff, 0xff}, + }, +}}; + +static struct ieee80211_supported_band cc33xx_band_5ghz = { + .channels = cc33xx_channels_5ghz, + .n_channels = ARRAY_SIZE(cc33xx_channels_5ghz), + .bitrates = cc33xx_rates_5ghz, + .n_bitrates = ARRAY_SIZE(cc33xx_rates_5ghz), + .vht_cap = { + .vht_supported = true, + .cap = (IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 | (1 << + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT)), + .vht_mcs = { + .rx_mcs_map = cpu_to_le16(0xfffc), + .rx_highest = cpu_to_le16(7), + .tx_mcs_map = cpu_to_le16(0xfffc), + .tx_highest = cpu_to_le16(7), + }, + }, + .iftype_data = iftype_data_5ghz, + .n_iftype_data = ARRAY_SIZE(iftype_data_5ghz), + +}; + +static void __cc33xx_op_remove_interface(struct cc33xx *cc, + struct ieee80211_vif *vif, + bool reset_tx_queues); +static void cc33xx_turn_off(struct cc33xx *cc); +static void cc33xx_free_ap_keys(struct cc33xx *cc, struct cc33xx_vif *wlvif); +static int process_core_status(struct cc33xx *cc, + struct core_status *core_status); +static int cc33xx_setup(struct cc33xx *cc); + +static int cc33xx_set_authorized(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int ret; + + if (WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS)) + return -EINVAL; + + if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + return 0; + + if (test_and_set_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags)) + return 0; + + ret = cc33xx_cmd_set_peer_state(cc, wlvif, wlvif->sta.hlid); + if (ret < 0) + return ret; + + cc33xx_info("Association complete."); + return 0; +} + +/* cc->mutex must be taken */ +void cc33xx_rearm_tx_watchdog_locked(struct cc33xx *cc) +{ + /* if the watchdog is not armed, don't do anything */ + if (cc->tx_allocated_blocks == 0) + return; + + cancel_delayed_work(&cc->tx_watchdog_work); + ieee80211_queue_delayed_work(cc->hw, &cc->tx_watchdog_work, + msecs_to_jiffies(cc->conf.host_conf.tx.tx_watchdog_timeout)); +} + +static void cc33xx_sta_rc_update(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + bool wide = wlvif->rc_update_bw >= IEEE80211_STA_RX_BW_40; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 sta_rc_update wide %d", wide); + + /* sanity */ + if (WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS)) + return; + + /* ignore the change before association */ + if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + return; + + /* If we started out as wide, we can change the operation mode. If we + * thought this was a 20mhz AP, we have to reconnect + */ + if (wlvif->sta.role_chan_type != NL80211_CHAN_HT40MINUS && + wlvif->sta.role_chan_type != NL80211_CHAN_HT40PLUS) + ieee80211_connection_loss(cc33xx_wlvif_to_vif(wlvif)); +} + +static void cc33xx_rc_update_work(struct work_struct *work) +{ + struct cc33xx_vif *wlvif = container_of(work, struct cc33xx_vif, + rc_update_work); + struct cc33xx *cc = wlvif->cc; + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (!ieee80211_vif_is_mesh(vif)) + cc33xx_sta_rc_update(cc, wlvif); + +out: + mutex_unlock(&cc->mutex); +} + +static inline void cc33xx_tx_watchdog_work(struct work_struct *work) +{ + container_of(to_delayed_work(work), struct cc33xx, tx_watchdog_work); +} + +static void cc33xx_adjust_conf(struct cc33xx *cc) +{ + if (no_recovery != -1) + cc->conf.core.no_recovery = (u8)no_recovery; +} + +void cc33xx_flush_deferred_work(struct cc33xx *cc) +{ + struct sk_buff *skb; + + /* Pass all received frames to the network stack */ + while ((skb = skb_dequeue(&cc->deferred_rx_queue))) { + cc33xx_debug(DEBUG_RX, "%s: rx skb 0x%p", __func__, skb); + ieee80211_rx_ni(cc->hw, skb); + } + + /* Return sent skbs to the network stack */ + while ((skb = skb_dequeue(&cc->deferred_tx_queue))) + ieee80211_tx_status_ni(cc->hw, skb); +} + +static void cc33xx_netstack_work(struct work_struct *work) +{ + struct cc33xx *cc = container_of(work, struct cc33xx, netstack_work); + + do { + cc33xx_flush_deferred_work(cc); + } while (skb_queue_len(&cc->deferred_rx_queue)); +} + +static int cc33xx_irq_locked(struct cc33xx *cc) +{ + int ret = 0; + struct core_status *core_status_ptr; + u8 *rx_buf_ptr; + u16 rx_buf_len; + size_t read_data_len; + const size_t maximum_rx_packet_size = CC33XX_FW_RX_PACKET_RAM; + size_t rx_byte_count; + struct NAB_rx_header *NAB_rx_header; + + process_deferred_events(cc); + + claim_core_status_lock(cc); + + rx_byte_count = (le32_to_cpu(cc->core_status->rx_status) & RX_BYTE_COUNT_MASK); + if (rx_byte_count != 0) { + const int read_headers_len = sizeof(struct core_status) + + sizeof(struct NAB_rx_header); + + /* Read aggressively as more data might be coming in */ + rx_byte_count *= 2; + + read_data_len = rx_byte_count + read_headers_len; + + if (cc->max_transaction_len) { /* Used in SPI interface */ + const int spi_alignment = sizeof(u32) - 1; + + read_data_len = __ALIGN_MASK(read_data_len, + spi_alignment); + read_data_len = min(read_data_len, + cc->max_transaction_len); + } else { /* SDIO */ + const int sdio_alignment = CC33XX_BUS_BLOCK_SIZE - 1; + + read_data_len = __ALIGN_MASK(read_data_len, + sdio_alignment); + read_data_len = min(read_data_len, + maximum_rx_packet_size); + } + + ret = cc33xx_raw_read(cc, NAB_DATA_ADDR, cc->aggr_buf, + read_data_len, true); + if (ret < 0) { + cc33xx_debug(DEBUG_IRQ, + "rx read Error response 0x%x", ret); + release_core_status_lock(cc); + return ret; + } + + core_status_ptr = (struct core_status *)((u8 *)cc->aggr_buf + + read_data_len - sizeof(struct core_status)); + + memcpy(cc->core_status, + core_status_ptr, sizeof(struct core_status)); + + process_core_status(cc, cc->core_status); + + release_core_status_lock(cc); + + cc33xx_debug(DEBUG_IRQ, "read rx data 0x%x", ret); + NAB_rx_header = (struct NAB_rx_header *)cc->aggr_buf; + rx_buf_len = le16_to_cpu(NAB_rx_header->len) - 8; + if (rx_buf_len != 0) { + rx_buf_ptr = (u8 *)cc->aggr_buf + sizeof(struct NAB_rx_header); + cc33xx_rx(cc, rx_buf_ptr, rx_buf_len); + } else { + cc33xx_error("Rx buffer length is 0"); + cc33xx_queue_recovery_work(cc); + } + } else { + cc33xx_debug(DEBUG_IRQ, "IRQ locked work: No rx data, releasing core-status lock"); + release_core_status_lock(cc); + } + + cc33xx_tx_immediate_complete(cc); + + return ret; +} + +static int read_core_status(struct cc33xx *cc, struct core_status *core_status) +{ + cc33xx_debug(DEBUG_CORE_STATUS, "Reading core status"); + + return cc33xx_raw_read(cc, NAB_STATUS_ADDR, core_status, + sizeof(*core_status), false); +} + +#define CTRL_TYPE_BITS 4 +static int get_type(struct control_info_descriptor *control_info_descriptor) +{ + u16 type_mask = GENMASK(CTRL_TYPE_BITS - 1, 0); + + return le16_to_cpu(control_info_descriptor->type_and_length) & type_mask; +} + +static unsigned int get_length(struct control_info_descriptor *control_info_descriptor) +{ + return le16_to_cpu(control_info_descriptor->type_and_length) >> CTRL_TYPE_BITS; +} + +static int parse_control_message(struct cc33xx *cc, + const u8 *buffer, size_t buffer_length) +{ + u8 *const end_of_payload = (u8 *const)buffer + buffer_length; + u8 *const start_of_payload = (u8 *const)buffer; + struct control_info_descriptor *control_info_descriptor; + const u8 *event_data, *cmd_result_data; + unsigned int ctrl_info_type, ctrl_info_length; + + while (buffer < end_of_payload) { + control_info_descriptor = + (struct control_info_descriptor *)buffer; + + ctrl_info_type = get_type(control_info_descriptor); + ctrl_info_length = get_length(control_info_descriptor); + + cc33xx_debug(DEBUG_CMD, "Processing message type %d, len %d", + ctrl_info_type, ctrl_info_length); + + switch (ctrl_info_type) { + case CTRL_MSG_EVENT: + event_data = buffer + sizeof(*control_info_descriptor); + + deffer_event(cc, event_data, ctrl_info_length); + break; + + case CTRL_MSG_COMMND_COMPLETE: + cmd_result_data = buffer; + cmd_result_data += sizeof(*control_info_descriptor); + + if (ctrl_info_length > sizeof(cc->command_result)) { + print_hex_dump(KERN_DEBUG, "message dump:", + DUMP_PREFIX_OFFSET, 16, 1, + cmd_result_data, + ctrl_info_length, false); + + WARN(1, "Error device response exceeds result buffer size"); + + goto message_parse_error; + } + + memcpy(cc->command_result, + cmd_result_data, ctrl_info_length); + + cc->result_length = ctrl_info_length; + + complete(&cc->command_complete); + break; + + default: + print_hex_dump(KERN_DEBUG, "message dump:", + DUMP_PREFIX_OFFSET, 16, 1, + start_of_payload, buffer_length, false); + + WARN(1, "Error processing device message @ offset %zu", + (size_t)(buffer - start_of_payload)); + + goto message_parse_error; + } + + buffer += sizeof(*control_info_descriptor); + buffer += ctrl_info_length; + } + + return 0; + +message_parse_error: + return -EIO; +} + +static int read_control_message(struct cc33xx *cc, u8 *read_buffer, + size_t buffer_size) +{ + int ret; + size_t device_message_size; + struct NAB_header *nab_header; + + ret = cc33xx_raw_read(cc, NAB_CONTROL_ADDR, read_buffer, + buffer_size, false); + + if (ret < 0) { + cc33xx_debug(DEBUG_CMD, + "control read Error response 0x%x", ret); + return ret; + } + + nab_header = (struct NAB_header *)read_buffer; + + if (le32_to_cpu(nab_header->sync_pattern) != DEVICE_SYNC_PATTERN) { + cc33xx_error("Wrong device sync pattern: 0x%x", + nab_header->sync_pattern); + return -EIO; + } + + device_message_size = sizeof(*nab_header) + NAB_EXTRA_BYTES + + le16_to_cpu(nab_header->len); + + if (device_message_size > buffer_size) { + cc33xx_error("Invalid NAB length field: %x", nab_header->len); + return -EIO; + } + + return le16_to_cpu(nab_header->len); +} + +static int process_event_and_cmd_result(struct cc33xx *cc, + struct core_status *core_status) +{ + int ret; + u8 *read_buffer, *message; + const size_t buffer_size = CC33XX_CMD_MAX_SIZE; + size_t message_length; + struct core_status *new_core_status; + __le32 previous_hint; + + read_buffer = kmalloc(buffer_size, GFP_KERNEL); + if (!read_buffer) + return -ENOMEM; + + ret = read_control_message(cc, read_buffer, buffer_size); + if (ret < 0) + goto out; + + message_length = ret - NAB_EXTRA_BYTES; + message = read_buffer + sizeof(struct NAB_header) + NAB_EXTRA_BYTES; + ret = parse_control_message(cc, message, message_length); + if (ret < 0) + goto out; + + /* Each read transaction always carries an updated core status */ + previous_hint = core_status->host_interrupt_status; + new_core_status = (struct core_status *) + (read_buffer + buffer_size - sizeof(struct core_status)); + memcpy(core_status, new_core_status, sizeof(*core_status)); + /* Host interrupt filed is clear-on-read and we do not want + * to overrun previously unhandled bits. + */ + core_status->host_interrupt_status |= previous_hint; + +out: + kfree(read_buffer); + return ret; +} + +static int verify_padding(struct core_status *core_status) +{ + unsigned int i; + const u32 valid_padding = 0x55555555; + + for (i = 0; i < ARRAY_SIZE(core_status->block_pad); i++) { + if (le32_to_cpu(core_status->block_pad[i]) != valid_padding) { + cc33xx_error("Error in core status padding:"); + print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 16, + 1, core_status, sizeof(*core_status), + false); + return -1; + } + } + + return 0; +} + +static int process_core_status(struct cc33xx *cc, + struct core_status *core_status) +{ + bool core_status_idle; + u32 shadow_host_interrupt_status; + int ret; + + do { + core_status_idle = true; + + shadow_host_interrupt_status = + le32_to_cpu(core_status->host_interrupt_status); + + /* Interrupts are aggregated (ORed) in this filed with each + * read operation from the device. + */ + core_status->host_interrupt_status = 0; + + cc33xx_debug(DEBUG_IRQ, + "HINT_STATUS: 0x%x, TSF: 0x%x, rx status: 0x%x", + shadow_host_interrupt_status, core_status->tsf, + core_status->rx_status); + + if (shadow_host_interrupt_status & HINT_COMMAND_COMPLETE) { + ret = process_event_and_cmd_result(cc, core_status); + if (ret < 0) { + memset(core_status, 0, sizeof(*core_status)); + return ret; + } + core_status_idle = false; + } + + if ((le32_to_cpu(core_status->rx_status) & RX_BYTE_COUNT_MASK) != 0) { + cc33xx_debug(DEBUG_RX, "Rx data pending, triggering deferred work"); + queue_work(cc->freezable_wq, &cc->irq_deferred_work); + } + + if (core_status->fw_info.tx_result_queue_index + != cc->last_fw_rls_idx){ + cc33xx_debug(DEBUG_TX, "Tx new result, triggering deferred work"); + queue_work(cc->freezable_wq, &cc->irq_deferred_work); + } + + if (shadow_host_interrupt_status & HINT_NEW_TX_RESULT) { + cc33xx_debug(DEBUG_TX, "Tx complete, triggering deferred work"); + queue_work(cc->freezable_wq, &cc->irq_deferred_work); + } + + if (shadow_host_interrupt_status & BOOT_TIME_INTERRUPTS) { + cc33xx_handle_boot_irqs(cc, + shadow_host_interrupt_status); + } + + if (shadow_host_interrupt_status & HINT_GENERAL_ERROR) { + cc33xx_error("FW is stuck, triggering recovery"); + cc33xx_queue_recovery_work(cc); + } + } while (!core_status_idle); + + return 0; +} + +void cc33xx_irq(void *cookie) +{ + struct cc33xx *cc = cookie; + unsigned long flags; + int ret; + + claim_core_status_lock(cc); + + if (test_bit(CC33XX_FLAG_SUSPENDED, &cc->flags)) { + /* don't enqueue a work right now. mark it as pending */ + set_bit(CC33XX_FLAG_PENDING_WORK, &cc->flags); + spin_lock_irqsave(&cc->cc_lock, flags); + cc33xx_disable_interrupts_nosync(cc); + pm_wakeup_hard_event(cc->dev); + spin_unlock_irqrestore(&cc->cc_lock, flags); + goto out; + } + + ret = read_core_status(cc, cc->core_status); + if (unlikely(ret < 0)) { + cc33xx_error("IO error during core status read"); + cc33xx_queue_recovery_work(cc); + goto out; + } + + ret = verify_padding(cc->core_status); + if (unlikely(ret < 0)) { + cc33xx_queue_recovery_work(cc); + goto out; + } + + process_core_status(cc, cc->core_status); + +out: + release_core_status_lock(cc); +} + +struct vif_counter_data { + u8 counter; + + struct ieee80211_vif *cur_vif; + bool cur_vif_running; +}; + +static void cc33xx_vif_count_iter(void *data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct vif_counter_data *counter = data; + + counter->counter++; + if (counter->cur_vif == vif) + counter->cur_vif_running = true; +} + +/* caller must not hold cc->mutex, as it might deadlock */ +static void cc33xx_get_vif_count(struct ieee80211_hw *hw, + struct ieee80211_vif *cur_vif, + struct vif_counter_data *data) +{ + memset(data, 0, sizeof(*data)); + data->cur_vif = cur_vif; + + ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, + cc33xx_vif_count_iter, data); +} + +void cc33xx_queue_recovery_work(struct cc33xx *cc) +{ + /* Avoid a recursive recovery */ + if (cc->state == CC33XX_STATE_ON) { + cc->state = CC33XX_STATE_RESTARTING; + set_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags); + ieee80211_queue_work(cc->hw, &cc->recovery_work); + } +} + +static void cc33xx_save_freed_pkts(struct cc33xx *cc, struct cc33xx_vif *wlvif, + u8 hlid, struct ieee80211_sta *sta) +{ + struct cc33xx_station *wl_sta; + u32 sqn_recovery_padding = CC33XX_TX_SQN_POST_RECOVERY_PADDING; + + wl_sta = (void *)sta->drv_priv; + wl_sta->total_freed_pkts = cc->links[hlid].total_freed_pkts; + + /* increment the initial seq number on recovery to account for + * transmitted packets that we haven't yet got in the FW status + */ + if (wlvif->encryption_type == KEY_GEM) + sqn_recovery_padding = CC33XX_TX_SQN_POST_RECOVERY_PADDING_GEM; + + if (test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags)) + wl_sta->total_freed_pkts += sqn_recovery_padding; +} + +static void cc33xx_save_freed_pkts_addr(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + u8 hlid, const u8 *addr) +{ + struct ieee80211_sta *sta; + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + if (WARN_ON(hlid == CC33XX_INVALID_LINK_ID || + is_zero_ether_addr(addr))) + return; + + rcu_read_lock(); + sta = ieee80211_find_sta(vif, addr); + + if (sta) + cc33xx_save_freed_pkts(cc, wlvif, hlid, sta); + + rcu_read_unlock(); +} + +static void cc33xx_recovery_work(struct work_struct *work) +{ + struct cc33xx *cc = container_of(work, struct cc33xx, recovery_work); + struct cc33xx_vif *wlvif; + struct ieee80211_vif *vif; + + cc33xx_notice("CC33xx driver attempting recovery"); + + if (cc->conf.core.no_recovery) { + cc33xx_info("Recovery disabled by configuration, driver will not restart."); + return; + } + + if (test_bit(CC33XX_FLAG_DRIVER_REMOVED, &cc->flags)) { + cc33xx_info("Driver being removed, recovery disabled"); + return; + } + + cc->state = CC33XX_STATE_RESTARTING; + set_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags); + + mutex_lock(&cc->mutex); + while (!list_empty(&cc->wlvif_list)) { + wlvif = list_first_entry(&cc->wlvif_list, + struct cc33xx_vif, list); + vif = cc33xx_wlvif_to_vif(wlvif); + + if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + ieee80211_connection_loss(vif); + + __cc33xx_op_remove_interface(cc, vif, false); + } + mutex_unlock(&cc->mutex); + + cc33xx_turn_off(cc); + msleep(500); + + mutex_lock(&cc->mutex); + cc33xx_init_fw(cc); + mutex_unlock(&cc->mutex); + + ieee80211_restart_hw(cc->hw); + + mutex_lock(&cc->mutex); + clear_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags); + mutex_unlock(&cc->mutex); +} + +static void irq_deferred_work(struct work_struct *work) +{ + int ret; + unsigned long flags; + struct cc33xx *cc = + container_of(work, struct cc33xx, irq_deferred_work); + + mutex_lock(&cc->mutex); + + ret = cc33xx_irq_locked(cc); + if (ret) + cc33xx_queue_recovery_work(cc); + + spin_lock_irqsave(&cc->cc_lock, flags); + /* In case TX was not handled here, queue TX work */ + clear_bit(CC33XX_FLAG_TX_PENDING, &cc->flags); + if (!test_bit(CC33XX_FLAG_FW_TX_BUSY, &cc->flags) && + cc33xx_tx_total_queue_count(cc) > 0) + ieee80211_queue_work(cc->hw, &cc->tx_work); + spin_unlock_irqrestore(&cc->cc_lock, flags); + + mutex_unlock(&cc->mutex); +} + +static void irq_wrapper(struct platform_device *pdev) +{ + struct cc33xx *cc = platform_get_drvdata(pdev); + + cc33xx_irq(cc); +} + +static int cc33xx_plt_init(struct cc33xx *cc) +{ + /* PLT init: Role enable + Role start + plt Init */ + int ret = 0; + + /* Role enable */ + u8 returned_role_id = CC33XX_INVALID_ROLE_ID; + u8 bcast_addr[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; + + ret = cc33xx_cmd_role_enable(cc, bcast_addr, + ROLE_TRANSCEIVER, &returned_role_id); + if (ret < 0) { + cc33xx_info("PLT init Role Enable FAILED! , PLT roleID is: %u ", + returned_role_id); + goto out; + } + + ret = cc33xx_cmd_role_start_transceiver(cc, returned_role_id); + if (ret < 0) { + cc33xx_info("PLT init Role Start FAILED! , PLT roleID is: %u ", + returned_role_id); + cc33xx_cmd_role_disable(cc, &returned_role_id); + goto out; + } + + cc->plt_role_id = returned_role_id; + ret = cc33xx_cmd_plt_enable(cc, returned_role_id); + + if (ret >= 0) { + cc33xx_info("PLT init Role Start succeed!, PLT roleID is: %u ", + returned_role_id); + } else { + cc33xx_info("PLT init Role Start FAILED! , PLT roleID is: %u ", + returned_role_id); + } + +out: + return ret; +} + +int cc33xx_plt_start(struct cc33xx *cc, const enum plt_mode plt_mode) +{ + int ret = 0; + + mutex_lock(&cc->mutex); + + if (plt_mode == PLT_ON && cc->plt_mode == PLT_ON) { + cc33xx_error("PLT already on"); + ret = 0; + goto out; + } + + cc33xx_notice("PLT start"); + + if (plt_mode != PLT_CHIP_AWAKE) { + ret = cc33xx_plt_init(cc); + if (ret < 0) { + cc33xx_error("PLT start failed"); + goto out; + } + } + + /* Indicate to lower levels that we are now in PLT mode */ + cc->plt = true; + cc->plt_mode = plt_mode; + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +int cc33xx_plt_stop(struct cc33xx *cc) +{ + int ret = 0; + + cc33xx_notice("PLT stop"); + + ret = cc33xx_cmd_role_stop_transceiver(cc); + if (ret < 0) + goto out; + + ret = cc33xx_cmd_role_disable(cc, &cc->plt_role_id); + if (ret < 0) + goto out; + else + cc33xx_cmd_plt_disable(cc); + + cc33xx_flush_deferred_work(cc); + + flush_deferred_event_list(cc); + + mutex_lock(&cc->mutex); + cc->plt = false; + cc->plt_mode = PLT_OFF; + cc->rx_counter = 0; + mutex_unlock(&cc->mutex); + +out: + return ret; +} + +static void cc33xx_op_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct cc33xx *cc = hw->priv; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_vif *vif = info->control.vif; + struct cc33xx_vif *wlvif = NULL; + enum cc33xx_queue_stop_reason stop_reason = CC33XX_QUEUE_STOP_REASON_WATERMARK; + unsigned long flags; + int q, mapping; + u8 hlid; + + if (!vif) { + cc33xx_debug(DEBUG_TX, "DROP skb with no vif"); + ieee80211_free_txskb(hw, skb); + return; + } + + wlvif = cc33xx_vif_to_data(vif); + mapping = skb_get_queue_mapping(skb); + q = cc33xx_tx_get_queue(mapping); + + hlid = cc33xx_tx_get_hlid(cc, wlvif, skb, control->sta); + + spin_lock_irqsave(&cc->cc_lock, flags); + + /* drop the packet if the link is invalid or the queue is stopped + * for any reason but watermark. Watermark is a "soft"-stop so we + * allow these packets through. + */ + + if (hlid == CC33XX_INVALID_LINK_ID || + (!test_bit(hlid, wlvif->links_map)) || + (cc33xx_is_queue_stopped_locked(cc, wlvif, q) && + !cc33xx_is_queue_stopped_by_reason_locked(cc, wlvif, q, + stop_reason))) { + cc33xx_debug(DEBUG_TX, "DROP skb hlid %d q %d ", hlid, q); + ieee80211_free_txskb(hw, skb); + goto out; + } + + cc33xx_debug(DEBUG_TX, "queue skb hlid %d q %d len %d %p", + hlid, q, skb->len, skb); + skb_queue_tail(&cc->links[hlid].tx_queue[q], skb); + + cc->tx_queue_count[q]++; + wlvif->tx_queue_count[q]++; + + /* The workqueue is slow to process the tx_queue and we need stop + * the queue here, otherwise the queue will get too long. + */ + if (wlvif->tx_queue_count[q] >= CC33XX_TX_QUEUE_HIGH_WATERMARK && + !cc33xx_is_queue_stopped_by_reason_locked(cc, wlvif, q, + stop_reason)) { + cc33xx_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q); + cc33xx_stop_queue_locked(cc, wlvif, q, stop_reason); + } + + /* The chip specific setup must run before the first TX packet - + * before that, the tx_work will not be initialized! + */ + if (!test_bit(CC33XX_FLAG_FW_TX_BUSY, &cc->flags) && + !test_bit(CC33XX_FLAG_TX_PENDING, &cc->flags)) { + cc33xx_debug(DEBUG_TX, "Triggering tx thread"); + ieee80211_queue_work(cc->hw, &cc->tx_work); + } else { + cc33xx_debug(DEBUG_TX, "Not triggering tx thread cc->flags 0x%lx", + cc->flags); + } + +out: + spin_unlock_irqrestore(&cc->cc_lock, flags); +} + +/* The size of the dummy packet should be at least 1400 bytes. However, in + * order to minimize the number of bus transactions, aligning it to 512 bytes + * boundaries could be beneficial, performance wise + */ +#define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512)) + +static struct sk_buff *cc33xx_alloc_dummy_packet(struct cc33xx *cc) +{ + struct sk_buff *skb; + struct ieee80211_hdr_3addr *hdr; + unsigned int dummy_packet_size; + + dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE - + sizeof(struct cc33xx_tx_hw_descr) - sizeof(*hdr); + + skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE); + if (!skb) + return NULL; + + skb_reserve(skb, sizeof(struct cc33xx_tx_hw_descr)); + + hdr = skb_put_zero(skb, sizeof(*hdr)); + hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | + IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_TODS); + + skb_put_zero(skb, dummy_packet_size); + + /* Dummy packets require the TID to be management */ + skb->priority = CC33XX_TID_MGMT; + + /* Initialize all fields that might be used */ + skb_set_queue_mapping(skb, 0); + memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info)); + + return skb; +} + +static int cc33xx_validate_wowlan_pattern(struct cfg80211_pkt_pattern *p) +{ + int num_fields = 0, in_field = 0, fields_size = 0; + int i, pattern_len = 0; + + if (!p->mask) { + cc33xx_warning("No mask in WoWLAN pattern"); + return -EINVAL; + } + + /* The pattern is broken up into segments of bytes at different offsets + * that need to be checked by the FW filter. Each segment is called + * a field in the FW API. We verify that the total number of fields + * required for this pattern won't exceed FW limits (8) + * as well as the total fields buffer won't exceed the FW limit. + * Note that if there's a pattern which crosses Ethernet/IP header + * boundary a new field is required. + */ + for (i = 0; i < p->pattern_len; i++) { + if (test_bit(i, (unsigned long *)p->mask)) { + if (!in_field) { + in_field = 1; + pattern_len = 1; + } else if (i == CC33XX_RX_FILTER_ETH_HEADER_SIZE) { + num_fields++; + fields_size += pattern_len + + RX_FILTER_FIELD_OVERHEAD; + pattern_len = 1; + } else { + pattern_len++; + } + } else if (in_field) { + in_field = 0; + fields_size += pattern_len + RX_FILTER_FIELD_OVERHEAD; + num_fields++; + } + } + + if (in_field) { + fields_size += pattern_len + RX_FILTER_FIELD_OVERHEAD; + num_fields++; + } + + if (num_fields > CC33XX_RX_FILTER_MAX_FIELDS) { + cc33xx_warning("RX Filter too complex. Too many segments"); + return -EINVAL; + } + + if (fields_size > CC33XX_RX_FILTER_MAX_FIELDS_SIZE) { + cc33xx_warning("RX filter pattern is too big"); + return -E2BIG; + } + + return 0; +} + +static void cc33xx_rx_filter_free(struct cc33xx_rx_filter *filter) +{ + int i; + + if (!filter) + return; + + for (i = 0; i < filter->num_fields; i++) + kfree(filter->fields[i].pattern); + + kfree(filter); +} + +static int cc33xx_rx_filter_alloc_field(struct cc33xx_rx_filter *filter, + u16 offset, u8 flags, + const u8 *pattern, u8 len) +{ + struct cc33xx_rx_filter_field *field; + + if (filter->num_fields == CC33XX_RX_FILTER_MAX_FIELDS) { + cc33xx_warning("Max fields per RX filter. can't alloc another"); + return -EINVAL; + } + + field = &filter->fields[filter->num_fields]; + + field->pattern = kzalloc(len, GFP_KERNEL); + if (!field->pattern) + return -ENOMEM; + + filter->num_fields++; + + field->offset = cpu_to_le16(offset); + field->flags = flags; + field->len = len; + memcpy(field->pattern, pattern, len); + + return 0; +} + +/* Allocates an RX filter returned through f + * which needs to be freed using rx_filter_free() + */ +static int +cc33xx_convert_wowlan_pattern_to_rx_filter(struct cfg80211_pkt_pattern *p, + struct cc33xx_rx_filter **f) +{ + int i, j, ret = 0; + struct cc33xx_rx_filter *filter; + u16 offset; + u8 flags, len; + + filter = kzalloc(sizeof(*filter), GFP_KERNEL); + if (!filter) { + ret = -ENOMEM; + goto err; + } + + i = 0; + while (i < p->pattern_len) { + if (!test_bit(i, (unsigned long *)p->mask)) { + i++; + continue; + } + + for (j = i; j < p->pattern_len; j++) { + if (!test_bit(j, (unsigned long *)p->mask)) + break; + + if (i < CC33XX_RX_FILTER_ETH_HEADER_SIZE && + j >= CC33XX_RX_FILTER_ETH_HEADER_SIZE) + break; + } + + if (i < CC33XX_RX_FILTER_ETH_HEADER_SIZE) { + offset = i; + flags = CC33XX_RX_FILTER_FLAG_ETHERNET_HEADER; + } else { + offset = i - CC33XX_RX_FILTER_ETH_HEADER_SIZE; + flags = CC33XX_RX_FILTER_FLAG_IP_HEADER; + } + + len = j - i; + + ret = cc33xx_rx_filter_alloc_field(filter, offset, flags, + &p->pattern[i], len); + if (ret) + goto err; + + i = j; + } + + filter->action = FILTER_SIGNAL; + + *f = filter; + ret = 0; + goto out; + +err: + cc33xx_rx_filter_free(filter); + *f = NULL; +out: + return ret; +} + +static int cc33xx_configure_wowlan(struct cc33xx *cc, + struct cfg80211_wowlan *wow) +{ + int i, ret; + + if (!wow || (!wow->any && !wow->n_patterns)) { + if (wow) + cc33xx_warning("invalid wow configuration - set to pattern trigger without setting pattern"); + + ret = cc33xx_acx_default_rx_filter_enable(cc, 0, + FILTER_SIGNAL); + if (ret) + goto out; + + ret = cc33xx_rx_filter_clear_all(cc); + if (ret) + goto out; + + return 0; + } + + if (wow->any) { + ret = cc33xx_acx_default_rx_filter_enable(cc, 1, + FILTER_SIGNAL); + if (ret) + goto out; + + ret = cc33xx_rx_filter_clear_all(cc); + if (ret) + goto out; + + return 0; + } + + if (WARN_ON(wow->n_patterns > CC33XX_MAX_RX_FILTERS)) + return -EINVAL; + + /* Validate all incoming patterns before clearing current FW state */ + for (i = 0; i < wow->n_patterns; i++) { + ret = cc33xx_validate_wowlan_pattern(&wow->patterns[i]); + if (ret) { + cc33xx_warning("Bad wowlan pattern %d", i); + return ret; + } + } + + ret = cc33xx_acx_default_rx_filter_enable(cc, 0, FILTER_SIGNAL); + if (ret) + goto out; + + ret = cc33xx_rx_filter_clear_all(cc); + if (ret) + goto out; + + /* Translate WoWLAN patterns into filters */ + for (i = 0; i < wow->n_patterns; i++) { + struct cfg80211_pkt_pattern *p; + struct cc33xx_rx_filter *filter = NULL; + + p = &wow->patterns[i]; + + ret = cc33xx_convert_wowlan_pattern_to_rx_filter(p, &filter); + if (ret) { + cc33xx_warning("Failed to create an RX filter from wowlan pattern %d", + i); + goto out; + } + + ret = cc33xx_rx_filter_enable(cc, i, 1, filter); + + cc33xx_rx_filter_free(filter); + if (ret) + goto out; + } + + ret = cc33xx_acx_default_rx_filter_enable(cc, 1, FILTER_DROP); + +out: + return ret; +} + +static int cc33xx_configure_suspend_sta(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct cfg80211_wowlan *wow) +{ + struct cc33xx_core_conf *core_conf = &cc->conf.core; + int ret = 0; + + if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + goto out; + + ret = cc33xx_configure_wowlan(cc, wow); + if (ret < 0) + goto out; + + if (core_conf->suspend_wake_up_event == core_conf->wake_up_event && + core_conf->suspend_listen_interval == core_conf->listen_interval) + goto out; + + ret = cc33xx_acx_wake_up_conditions(cc, wlvif, + core_conf->suspend_wake_up_event, + core_conf->suspend_listen_interval); + + if (ret < 0) + cc33xx_error("suspend: set wake up conditions failed: %d", ret); +out: + return ret; +} + +static int cc33xx_configure_suspend_ap(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct cfg80211_wowlan *wow) +{ + int ret = 0; + + if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) + goto out; + + ret = cc33xx_acx_beacon_filter_opt(cc, wlvif, true); + if (ret < 0) + goto out; + + ret = cc33xx_configure_wowlan(cc, wow); + if (ret < 0) + goto out; + +out: + return ret; +} + +static int cc33xx_configure_suspend(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct cfg80211_wowlan *wow) +{ + if (wlvif->bss_type == BSS_TYPE_STA_BSS) + return cc33xx_configure_suspend_sta(cc, wlvif, wow); + + if (wlvif->bss_type == BSS_TYPE_AP_BSS) + return cc33xx_configure_suspend_ap(cc, wlvif, wow); + + return 0; +} + +static void cc33xx_configure_resume(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int ret = 0; + bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS; + bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS; + struct cc33xx_core_conf *core_conf = &cc->conf.core; + + if (!is_ap && !is_sta) + return; + + if ((is_sta && !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) || + (is_ap && !test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))) + return; + + cc33xx_configure_wowlan(cc, NULL); + + if (is_sta) { + if (core_conf->suspend_wake_up_event == core_conf->wake_up_event && + core_conf->suspend_listen_interval == core_conf->listen_interval) + return; + + ret = cc33xx_acx_wake_up_conditions(cc, wlvif, + core_conf->wake_up_event, + core_conf->listen_interval); + + if (ret < 0) + cc33xx_error("resume: wake up conditions failed: %d", + ret); + + } else if (is_ap) { + ret = cc33xx_acx_beacon_filter_opt(cc, wlvif, false); + } +} + +static int __maybe_unused cc33xx_op_suspend(struct ieee80211_hw *hw, + struct cfg80211_wowlan *wow) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif; + unsigned long flags; + int ret = 0; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow); + WARN_ON(!wow); + + /* we want to perform the recovery before suspending */ + if (test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags)) { + cc33xx_warning("postponing suspend to perform recovery"); + return -EBUSY; + } + + cc33xx_tx_flush(cc); + + mutex_lock(&cc->mutex); + + cc->keep_device_power = true; + cc33xx_for_each_wlvif(cc, wlvif) { + if (cc33xx_is_p2p_mgmt(wlvif)) + continue; + + ret = cc33xx_configure_suspend(cc, wlvif, wow); + if (ret < 0) { + mutex_unlock(&cc->mutex); + cc33xx_warning("couldn't prepare device to suspend"); + return ret; + } + } + + mutex_unlock(&cc->mutex); + + if (ret < 0) { + cc33xx_warning("couldn't prepare device to suspend"); + return ret; + } + + /* flush any remaining work */ + cc33xx_debug(DEBUG_MAC80211, "flushing remaining works"); + + flush_work(&cc->tx_work); + + /* Cancel the watchdog even if above tx_flush failed. We will detect + * it on resume anyway. + */ + cancel_delayed_work(&cc->tx_watchdog_work); + + /* set suspended flag to avoid triggering a new threaded_irq + * work. + */ + spin_lock_irqsave(&cc->cc_lock, flags); + set_bit(CC33XX_FLAG_SUSPENDED, &cc->flags); + spin_unlock_irqrestore(&cc->cc_lock, flags); + + return 0; +} + +static int __maybe_unused cc33xx_op_resume(struct ieee80211_hw *hw) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif; + unsigned long flags; + bool run_irq_work = false, pending_recovery; + int ret = 0; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 resume wow=%d", + cc->keep_device_power); + WARN_ON(!cc->keep_device_power); + + /* re-enable irq_work enqueuing, and call irq_work directly if + * there is a pending work. + */ + spin_lock_irqsave(&cc->cc_lock, flags); + clear_bit(CC33XX_FLAG_SUSPENDED, &cc->flags); + run_irq_work = test_and_clear_bit(CC33XX_FLAG_PENDING_WORK, &cc->flags); + spin_unlock_irqrestore(&cc->cc_lock, flags); + + mutex_lock(&cc->mutex); + + /* test the recovery flag before calling any SDIO functions */ + pending_recovery = test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, + &cc->flags); + + if (run_irq_work) { + cc33xx_debug(DEBUG_MAC80211, "Running postponed irq_work directly"); + + /* don't talk to the HW if recovery is pending */ + if (!pending_recovery) { + ret = cc33xx_irq_locked(cc); + if (ret) + cc33xx_queue_recovery_work(cc); + } + + cc33xx_enable_interrupts(cc); + } + + if (pending_recovery) { + cc33xx_warning("queuing forgotten recovery on resume"); + ieee80211_queue_work(cc->hw, &cc->recovery_work); + goto out; + } + + cc33xx_for_each_wlvif(cc, wlvif) { + if (cc33xx_is_p2p_mgmt(wlvif)) + continue; + + cc33xx_configure_resume(cc, wlvif); + } + +out: + cc->keep_device_power = false; + + /* Set a flag to re-init the watchdog on the first Tx after resume. + * That way we avoid possible conditions where Tx-complete interrupts + * fail to arrive and we perform a spurious recovery. + */ + set_bit(CC33XX_FLAG_REINIT_TX_WDOG, &cc->flags); + mutex_unlock(&cc->mutex); + + return ret; +} + +static int cc33xx_op_start(struct ieee80211_hw *hw) +{ + cc33xx_debug(DEBUG_MAC80211, "mac80211 start"); + + /* We have to delay the booting of the hardware because + * we need to know the local MAC address before downloading and + * initializing the firmware. The MAC address cannot be changed + * after boot, and without the proper MAC address, the firmware + * will not function properly. + * + * The MAC address is first known when the corresponding interface + * is added. That is where we will initialize the hardware. + */ + + return 0; +} + +static void cc33xx_turn_off(struct cc33xx *cc) +{ + int i; + + if (cc->state == CC33XX_STATE_OFF) { + if (test_and_clear_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, + &cc->flags)) + cc33xx_enable_interrupts(cc); + + return; + } + + cc33xx_debug(DEBUG_BOOT, "Turning off"); + + mutex_lock(&cc->mutex); + + /* this must be before the cancel_work calls below, so that the work + * functions don't perform further work. + */ + cc->state = CC33XX_STATE_OFF; + + /* Use the nosync variant to disable interrupts, so the mutex could be + * held while doing so without deadlocking. + */ + cc33xx_disable_interrupts_nosync(cc); + + mutex_unlock(&cc->mutex); + + if (!test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags)) + cancel_work_sync(&cc->recovery_work); + cc33xx_flush_deferred_work(cc); + cancel_delayed_work_sync(&cc->scan_complete_work); + cancel_work_sync(&cc->netstack_work); + cancel_work_sync(&cc->tx_work); + cancel_work_sync(&cc->irq_deferred_work); + cancel_delayed_work_sync(&cc->tx_watchdog_work); + + /* let's notify MAC80211 about the remaining pending TX frames */ + mutex_lock(&cc->mutex); + cc33xx_tx_reset(cc); + + cc33xx_power_off(cc); + + cc->band = NL80211_BAND_2GHZ; + + cc->rx_counter = 0; + cc->power_level = CC33XX_MAX_TXPWR; + cc->tx_blocks_available = 0; + cc->tx_allocated_blocks = 0; + + cc->ap_fw_ps_map = 0; + cc->ap_ps_map = 0; + cc->sleep_auth = CC33XX_PSM_ILLEGAL; + memset(cc->roles_map, 0, sizeof(cc->roles_map)); + memset(cc->links_map, 0, sizeof(cc->links_map)); + memset(cc->roc_map, 0, sizeof(cc->roc_map)); + memset(cc->session_ids, 0, sizeof(cc->session_ids)); + memset(cc->rx_filter_enabled, 0, sizeof(cc->rx_filter_enabled)); + cc->active_sta_count = 0; + cc->active_link_count = 0; + cc->ble_enable = 0; + + /* The system link is always allocated */ + cc->links[CC33XX_SYSTEM_HLID].allocated_pkts = 0; + cc->links[CC33XX_SYSTEM_HLID].prev_freed_pkts = 0; + __set_bit(CC33XX_SYSTEM_HLID, cc->links_map); + + /* this is performed after the cancel_work calls and the associated + * mutex_lock, so that cc33xx_op_add_interface does not accidentally + * get executed before all these vars have been reset. + */ + cc->flags = 0; + + for (i = 0; i < NUM_TX_QUEUES; i++) + cc->tx_allocated_pkts[i] = 0; + + kfree(cc->target_mem_map); + cc->target_mem_map = NULL; + + /* FW channels must be re-calibrated after recovery, + * save current Reg-Domain channel configuration and clear it. + */ + memcpy(cc->reg_ch_conf_pending, cc->reg_ch_conf_last, + sizeof(cc->reg_ch_conf_pending)); + memset(cc->reg_ch_conf_last, 0, sizeof(cc->reg_ch_conf_last)); + + mutex_unlock(&cc->mutex); +} + +static inline void cc33xx_op_stop(struct ieee80211_hw *hw) +{ + cc33xx_debug(DEBUG_MAC80211, "mac80211 stop"); +} + +static void cc33xx_channel_switch_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct cc33xx *cc; + struct ieee80211_vif *vif; + struct cc33xx_vif *wlvif; + + dwork = to_delayed_work(work); + wlvif = container_of(dwork, struct cc33xx_vif, channel_switch_work); + cc = wlvif->cc; + + cc33xx_info("channel switch failed (role_id: %d).", wlvif->role_id); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* check the channel switch is still ongoing */ + if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags)) + goto out; + + vif = cc33xx_wlvif_to_vif(wlvif); + ieee80211_chswitch_done(vif, false, 0); + + cc33xx_cmd_stop_channel_switch(cc, wlvif); + +out: + mutex_unlock(&cc->mutex); +} + +static void cc33xx_connection_loss_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct cc33xx *cc; + struct ieee80211_vif *vif; + struct cc33xx_vif *wlvif; + + dwork = to_delayed_work(work); + wlvif = container_of(dwork, struct cc33xx_vif, connection_loss_work); + cc = wlvif->cc; + + cc33xx_info("Connection loss work (role_id: %d).", wlvif->role_id); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* Call mac80211 connection loss */ + if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + goto out; + + vif = cc33xx_wlvif_to_vif(wlvif); + ieee80211_connection_loss(vif); + +out: + mutex_unlock(&cc->mutex); +} + +static void cc33xx_pending_auth_complete_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct cc33xx *cc; + struct cc33xx_vif *wlvif; + unsigned long time_spare; + + dwork = to_delayed_work(work); + wlvif = container_of(dwork, struct cc33xx_vif, + pending_auth_complete_work); + cc = wlvif->cc; + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* Make sure a second really passed since the last auth reply. Maybe + * a second auth reply arrived while we were stuck on the mutex. + * Check for a little less than the timeout to protect from scheduler + * irregularities. + */ + time_spare = msecs_to_jiffies(CC33XX_PEND_AUTH_ROC_TIMEOUT - 50); + time_spare += jiffies; + if (!time_after(time_spare, wlvif->pending_auth_reply_time)) + goto out; + + /* cancel the ROC if active */ + cc33xx_debug(DEBUG_CMD, + "pending_auth t/o expired - cancel ROC if active"); + + cc33xx_update_inconn_sta(cc, wlvif, NULL, false); + +out: + mutex_unlock(&cc->mutex); +} + +static void cc33xx_roc_timeout_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct cc33xx *cc; + struct cc33xx_vif *wlvif; + unsigned long time_spare; + + dwork = to_delayed_work(work); + wlvif = container_of(dwork, struct cc33xx_vif, roc_timeout_work); + cc = wlvif->cc; + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* Make sure that requested timeout really passed. Maybe an association + * completed and croc arrived while we were stuck on the mutex. + * Check for a little less than the timeout to protect from scheduler + * irregularities. + */ + time_spare = msecs_to_jiffies(CC33xx_PEND_ROC_COMPLETE_TIMEOUT - 50); + time_spare += jiffies; + if (!time_after(time_spare, wlvif->pending_auth_reply_time)) + goto out; + + /* cancel the ROC if active */ + cc33xx_debug(DEBUG_CMD, "Waiting for CROC Timeout has expired -> cancel ROC if exist"); + + if (test_bit(wlvif->role_id, cc->roc_map)) + cc33xx_croc(cc, wlvif->role_id); + +out: + mutex_unlock(&cc->mutex); +} + +static int cc33xx_allocate_rate_policy(struct cc33xx *cc, u8 *idx) +{ + u8 policy = find_first_zero_bit(cc->rate_policies_map, + CC33XX_MAX_RATE_POLICIES); + if (policy >= CC33XX_MAX_RATE_POLICIES) + return -EBUSY; + + __set_bit(policy, cc->rate_policies_map); + *idx = policy; + return 0; +} + +static void cc33xx_free_rate_policy(struct cc33xx *cc, u8 *idx) +{ + if (WARN_ON(*idx >= CC33XX_MAX_RATE_POLICIES)) + return; + + __clear_bit(*idx, cc->rate_policies_map); + *idx = CC33XX_MAX_RATE_POLICIES; +} + +static u8 cc33xx_get_role_type(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + switch (wlvif->bss_type) { + case BSS_TYPE_AP_BSS: + if (wlvif->p2p) + return CC33XX_ROLE_P2P_GO; + else if (ieee80211_vif_is_mesh(vif)) + return CC33XX_ROLE_MESH_POINT; + else + return CC33XX_ROLE_AP; + + case BSS_TYPE_STA_BSS: + if (wlvif->p2p) + return CC33XX_ROLE_P2P_CL; + else + return CC33XX_ROLE_STA; + + case BSS_TYPE_IBSS: + return CC33XX_ROLE_IBSS; + + default: + cc33xx_error("invalid bss_type: %d", wlvif->bss_type); + } + return CC33XX_INVALID_ROLE_TYPE; +} + +static int cc33xx_init_vif_data(struct cc33xx *cc, struct ieee80211_vif *vif) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct conf_tx_settings *tx_settings = &cc->conf.host_conf.tx; + int i; + + /* clear everything but the persistent data */ + memset(wlvif, 0, offsetof(struct cc33xx_vif, persistent)); + + switch (ieee80211_vif_type_p2p(vif)) { + case NL80211_IFTYPE_P2P_CLIENT: + wlvif->p2p = 1; + fallthrough; + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_P2P_DEVICE: + wlvif->bss_type = BSS_TYPE_STA_BSS; + break; + case NL80211_IFTYPE_ADHOC: + wlvif->bss_type = BSS_TYPE_IBSS; + break; + case NL80211_IFTYPE_P2P_GO: + wlvif->p2p = 1; + fallthrough; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_MESH_POINT: + wlvif->bss_type = BSS_TYPE_AP_BSS; + break; + default: + wlvif->bss_type = MAX_BSS_TYPE; + return -EOPNOTSUPP; + } + + wlvif->role_id = CC33XX_INVALID_ROLE_ID; + wlvif->dev_role_id = CC33XX_INVALID_ROLE_ID; + wlvif->dev_hlid = CC33XX_INVALID_LINK_ID; + + if (wlvif->bss_type == BSS_TYPE_STA_BSS || + wlvif->bss_type == BSS_TYPE_IBSS) { + /* init sta/ibss data */ + wlvif->sta.hlid = CC33XX_INVALID_LINK_ID; + cc33xx_allocate_rate_policy(cc, &wlvif->sta.basic_rate_idx); + cc33xx_allocate_rate_policy(cc, &wlvif->sta.ap_rate_idx); + cc33xx_allocate_rate_policy(cc, &wlvif->sta.p2p_rate_idx); + wlvif->basic_rate_set = CONF_TX_RATE_MASK_BASIC; + wlvif->basic_rate = CONF_TX_RATE_MASK_BASIC; + wlvif->rate_set = CONF_TX_RATE_MASK_BASIC; + } else { + /* init ap data */ + wlvif->ap.bcast_hlid = CC33XX_INVALID_LINK_ID; + wlvif->ap.global_hlid = CC33XX_INVALID_LINK_ID; + cc33xx_allocate_rate_policy(cc, &wlvif->ap.mgmt_rate_idx); + cc33xx_allocate_rate_policy(cc, &wlvif->ap.bcast_rate_idx); + for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++) + cc33xx_allocate_rate_policy(cc, + &wlvif->ap.ucast_rate_idx[i]); + wlvif->basic_rate_set = CONF_TX_ENABLED_RATES; + /* TODO: check if basic_rate shouldn't be + * cc33xx_tx_min_rate_get(cc, wlvif->basic_rate_set); + * instead (the same thing for STA above). + */ + wlvif->basic_rate = CONF_TX_ENABLED_RATES; + /* TODO: this seems to be used only for STA, check it */ + wlvif->rate_set = CONF_TX_ENABLED_RATES; + } + + wlvif->bitrate_masks[NL80211_BAND_2GHZ] = tx_settings->basic_rate; + wlvif->bitrate_masks[NL80211_BAND_5GHZ] = tx_settings->basic_rate_5; + wlvif->beacon_int = CC33XX_DEFAULT_BEACON_INT; + + /* mac80211 configures some values globally, while we treat them + * per-interface. thus, on init, we have to copy them from cc + */ + wlvif->band = cc->band; + wlvif->power_level = cc->power_level; + + INIT_WORK(&wlvif->rc_update_work, cc33xx_rc_update_work); + INIT_DELAYED_WORK(&wlvif->channel_switch_work, + cc33xx_channel_switch_work); + INIT_DELAYED_WORK(&wlvif->connection_loss_work, + cc33xx_connection_loss_work); + INIT_DELAYED_WORK(&wlvif->pending_auth_complete_work, + cc33xx_pending_auth_complete_work); + INIT_DELAYED_WORK(&wlvif->roc_timeout_work, + cc33xx_roc_timeout_work); + INIT_LIST_HEAD(&wlvif->list); + + return 0; +} + +struct cc33xx_hw_queue_iter_data { + unsigned long hw_queue_map[BITS_TO_LONGS(CC33XX_NUM_MAC_ADDRESSES)]; + + /* current vif */ + struct ieee80211_vif *vif; + + /* is the current vif among those iterated */ + bool cur_running; +}; + +static void cc33xx_hw_queue_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct cc33xx_hw_queue_iter_data *iter_data = data; + + if (vif->type == NL80211_IFTYPE_P2P_DEVICE || + WARN_ON_ONCE(vif->hw_queue[0] == IEEE80211_INVAL_HW_QUEUE)) + return; + + if (iter_data->cur_running || vif == iter_data->vif) { + iter_data->cur_running = true; + return; + } + + __set_bit(vif->hw_queue[0] / NUM_TX_QUEUES, iter_data->hw_queue_map); +} + +static int cc33xx_allocate_hw_queue_base(struct cc33xx *cc, + struct cc33xx_vif *wlvif) +{ + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + struct cc33xx_hw_queue_iter_data iter_data = {}; + int i, q_base; + + if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { + vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; + return 0; + } + + iter_data.vif = vif; + + /* mark all bits taken by active interfaces */ + ieee80211_iterate_active_interfaces_atomic(cc->hw, + IEEE80211_IFACE_ITER_RESUME_ALL, + cc33xx_hw_queue_iter, &iter_data); + + /* the current vif is already running in mac80211 (resume/recovery) */ + if (iter_data.cur_running) { + wlvif->hw_queue_base = vif->hw_queue[0]; + cc33xx_debug(DEBUG_MAC80211, + "using pre-allocated hw queue base %d", + wlvif->hw_queue_base); + + /* interface type might have changed type */ + goto adjust_cab_queue; + } + + q_base = find_first_zero_bit(iter_data.hw_queue_map, + CC33XX_NUM_MAC_ADDRESSES); + if (q_base >= CC33XX_NUM_MAC_ADDRESSES) + return -EBUSY; + + wlvif->hw_queue_base = q_base * NUM_TX_QUEUES; + cc33xx_debug(DEBUG_MAC80211, "allocating hw queue base: %d", + wlvif->hw_queue_base); + + for (i = 0; i < NUM_TX_QUEUES; i++) { + cc->queue_stop_reasons[wlvif->hw_queue_base + i] = 0; + /* register hw queues in mac80211 */ + vif->hw_queue[i] = wlvif->hw_queue_base + i; + } + +adjust_cab_queue: + /* the last places are reserved for cab queues per interface */ + if (wlvif->bss_type == BSS_TYPE_AP_BSS) { + vif->cab_queue = NUM_TX_QUEUES * CC33XX_NUM_MAC_ADDRESSES + + wlvif->hw_queue_base / NUM_TX_QUEUES; + } else { + vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; + } + + return 0; +} + +static int cc33xx_op_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct vif_counter_data vif_count; + int ret = 0; + u8 role_type; + + if (cc->plt) { + cc33xx_error("Adding Interface not allowed while in PLT mode"); + return -EBUSY; + } + + vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER | + IEEE80211_VIF_SUPPORTS_UAPSD | + IEEE80211_VIF_SUPPORTS_CQM_RSSI; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM", + ieee80211_vif_type_p2p(vif), vif->addr); + + cc33xx_get_vif_count(hw, vif, &vif_count); + + mutex_lock(&cc->mutex); + + /* in some very corner case HW recovery scenarios its possible to + * get here before __cc33xx_op_remove_interface is complete, so + * opt out if that is the case. + */ + if (test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags) || + test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) { + ret = -EBUSY; + goto out; + } + + ret = cc33xx_init_vif_data(cc, vif); + if (ret < 0) + goto out; + + wlvif->cc = cc; + role_type = cc33xx_get_role_type(cc, wlvif); + if (role_type == CC33XX_INVALID_ROLE_TYPE) { + ret = -EINVAL; + goto out; + } + + ret = cc33xx_allocate_hw_queue_base(cc, wlvif); + if (ret < 0) + goto out; + + if (!cc33xx_is_p2p_mgmt(wlvif)) { + ret = cc33xx_cmd_role_enable(cc, vif->addr, + role_type, &wlvif->role_id); + if (ret < 0) + goto out; + + ret = cc33xx_init_vif_specific(cc, vif); + if (ret < 0) + goto out; + } else { + ret = cc33xx_cmd_role_enable(cc, vif->addr, CC33XX_ROLE_DEVICE, + &wlvif->dev_role_id); + if (ret < 0) + goto out; + + /* needed mainly for configuring rate policies */ + ret = cc33xx_acx_config_ps(cc, wlvif); + if (ret < 0) + goto out; + } + + list_add(&wlvif->list, &cc->wlvif_list); + set_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags); + + if (wlvif->bss_type == BSS_TYPE_AP_BSS) + cc->ap_count++; + else + cc->sta_count++; + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static void __cc33xx_op_remove_interface(struct cc33xx *cc, + struct ieee80211_vif *vif, + bool reset_tx_queues) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + int i, ret; + bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); + + cc33xx_debug(DEBUG_MAC80211, "mac80211 remove interface %d", vif->type); + cc33xx_debug(DEBUG_MAC80211, "mac80211 rm: name1=%s, name2=%s, name3=%s", + sdata->name, sdata->dev->name, sdata->wdev.netdev->name); + + if (!test_and_clear_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) + return; + + /* because of hardware recovery, we may get here twice */ + if (cc->state == CC33XX_STATE_OFF) + return; + + if (cc->scan.state != CC33XX_SCAN_STATE_IDLE && + cc->scan_wlvif == wlvif) { + struct cfg80211_scan_info info = { + .aborted = true, + }; + + /* Rearm the tx watchdog just before idling scan. This + * prevents just-finished scans from triggering the watchdog + */ + cc33xx_rearm_tx_watchdog_locked(cc); + + cc->scan.state = CC33XX_SCAN_STATE_IDLE; + memset(cc->scan.scanned_ch, 0, sizeof(cc->scan.scanned_ch)); + cc->scan_wlvif = NULL; + cc->scan.req = NULL; + ieee80211_scan_completed(cc->hw, &info); + } + + if (cc->sched_vif == wlvif) + cc->sched_vif = NULL; + + if (cc->roc_vif == vif) { + cc->roc_vif = NULL; + ieee80211_remain_on_channel_expired(cc->hw); + } + + if (!test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags)) { + /* disable active roles */ + + if (wlvif->bss_type == BSS_TYPE_STA_BSS || + wlvif->bss_type == BSS_TYPE_IBSS) { + if (wlvif->dev_hlid != CC33XX_INVALID_LINK_ID) + cc33xx_stop_dev(cc, wlvif); + } + + if (!cc33xx_is_p2p_mgmt(wlvif)) { + ret = cc33xx_cmd_role_disable(cc, &wlvif->role_id); + if (ret < 0) + goto deinit; + } else { + ret = cc33xx_cmd_role_disable(cc, &wlvif->dev_role_id); + if (ret < 0) + goto deinit; + } + } +deinit: + cc33xx_tx_reset_wlvif(cc, wlvif); + + /* clear all hlids (except system_hlid) */ + wlvif->dev_hlid = CC33XX_INVALID_LINK_ID; + + if (wlvif->bss_type == BSS_TYPE_STA_BSS || + wlvif->bss_type == BSS_TYPE_IBSS) { + wlvif->sta.hlid = CC33XX_INVALID_LINK_ID; + cc33xx_free_rate_policy(cc, &wlvif->sta.basic_rate_idx); + cc33xx_free_rate_policy(cc, &wlvif->sta.ap_rate_idx); + cc33xx_free_rate_policy(cc, &wlvif->sta.p2p_rate_idx); + } else { + wlvif->ap.bcast_hlid = CC33XX_INVALID_LINK_ID; + wlvif->ap.global_hlid = CC33XX_INVALID_LINK_ID; + cc33xx_free_rate_policy(cc, &wlvif->ap.mgmt_rate_idx); + cc33xx_free_rate_policy(cc, &wlvif->ap.bcast_rate_idx); + for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++) + cc33xx_free_rate_policy(cc, + &wlvif->ap.ucast_rate_idx[i]); + cc33xx_free_ap_keys(cc, wlvif); + } + + dev_kfree_skb(wlvif->probereq); + wlvif->probereq = NULL; + if (cc->last_wlvif == wlvif) + cc->last_wlvif = NULL; + list_del(&wlvif->list); + memset(wlvif->ap.sta_hlid_map, 0, sizeof(wlvif->ap.sta_hlid_map)); + wlvif->role_id = CC33XX_INVALID_ROLE_ID; + wlvif->dev_role_id = CC33XX_INVALID_ROLE_ID; + + if (is_ap) + cc->ap_count--; + else + cc->sta_count--; + + /* Last AP, have more stations. Configure sleep auth according to STA. + * Don't do thin on unintended recovery. + */ + if (test_bit(CC33XX_FLAG_RECOVERY_IN_PROGRESS, &cc->flags)) + goto unlock; + + /* mask ap events */ + if (cc->ap_count == 0 && is_ap) + cc->event_mask &= ~cc->ap_event_mask; + + if (cc->ap_count == 0 && is_ap && cc->sta_count) { + u8 sta_auth = cc->conf.host_conf.conn.sta_sleep_auth; + /* Configure for power according to debugfs */ + if (sta_auth != CC33XX_PSM_ILLEGAL) + cc33xx_acx_sleep_auth(cc, sta_auth); + /* Configure for ELP power saving */ + else + cc33xx_acx_sleep_auth(cc, CC33XX_PSM_ELP); + } + +unlock: + mutex_unlock(&cc->mutex); + + cancel_work_sync(&wlvif->rc_update_work); + cancel_delayed_work_sync(&wlvif->connection_loss_work); + cancel_delayed_work_sync(&wlvif->channel_switch_work); + cancel_delayed_work_sync(&wlvif->pending_auth_complete_work); + cancel_delayed_work_sync(&wlvif->roc_timeout_work); + + mutex_lock(&cc->mutex); +} + +static void cc33xx_op_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct cc33xx_vif *iter; + struct vif_counter_data vif_count; + + cc33xx_get_vif_count(hw, vif, &vif_count); + mutex_lock(&cc->mutex); + + if (cc->state == CC33XX_STATE_OFF || + !test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) + goto out; + + /* cc->vif can be null here if someone shuts down the interface + * just when hardware recovery has been started. + */ + cc33xx_for_each_wlvif(cc, iter) { + if (iter != wlvif) + continue; + + __cc33xx_op_remove_interface(cc, vif, true); + break; + } + WARN_ON(iter != wlvif); + +out: + mutex_unlock(&cc->mutex); +} + +static int cc33xx_op_change_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + enum nl80211_iftype new_type, bool p2p) +{ + struct cc33xx *cc = hw->priv; + int ret; + + set_bit(CC33XX_FLAG_VIF_CHANGE_IN_PROGRESS, &cc->flags); + cc33xx_op_remove_interface(hw, vif); + + vif->type = new_type; + vif->p2p = p2p; + ret = cc33xx_op_add_interface(hw, vif); + + clear_bit(CC33XX_FLAG_VIF_CHANGE_IN_PROGRESS, &cc->flags); + return ret; +} + +static int cc33xx_join(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int ret; + bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS); + + /* One of the side effects of the JOIN command is that is clears + * WPA/WPA2 keys from the chipset. Performing a JOIN while associated + * to a WPA/WPA2 access point will therefore kill the data-path. + * Currently the only valid scenario for JOIN during association + * is on roaming, in which case we will also be given new keys. + * Keep the below message for now, unless it starts bothering + * users who really like to roam a lot :) + */ + if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + cc33xx_info("JOIN while associated."); + + /* clear encryption type */ + wlvif->encryption_type = KEY_NONE; + + if (is_ibss) { + ret = cc33xx_cmd_role_start_ibss(cc, wlvif); + } else { + if (cc->quirks & CC33XX_QUIRK_START_STA_FAILS) { + /* TODO: this is an ugly workaround for wl12xx fw + * bug - we are not able to tx/rx after the first + * start_sta, so make dummy start+stop calls, + * and then call start_sta again. + * this should be fixed in the fw. + */ + cc33xx_cmd_role_start_sta(cc, wlvif); + cc33xx_cmd_role_stop_sta(cc, wlvif); + } + + ret = cc33xx_cmd_role_start_sta(cc, wlvif); + } + + return ret; +} + +static int cc33xx_ssid_set(struct cc33xx_vif *wlvif, + struct sk_buff *skb, int offset) +{ + u8 ssid_len; + const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset, + skb->len - offset); + + if (!ptr) { + cc33xx_error("No SSID in IEs!"); + return -ENOENT; + } + + ssid_len = ptr[1]; + if (ssid_len > IEEE80211_MAX_SSID_LEN) { + cc33xx_error("SSID is too long!"); + return -EINVAL; + } + + wlvif->ssid_len = ssid_len; + memcpy(wlvif->ssid, ptr + 2, ssid_len); + return 0; +} + +static int cc33xx_set_ssid(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + struct sk_buff *skb; + int ieoffset; + + /* we currently only support setting the ssid from the ap probe req */ + if (wlvif->bss_type != BSS_TYPE_STA_BSS) + return -EINVAL; + + skb = ieee80211_ap_probereq_get(cc->hw, vif); + if (!skb) + return -EINVAL; + + ieoffset = offsetof(struct ieee80211_mgmt, u.probe_req.variable); + cc33xx_ssid_set(wlvif, skb, ieoffset); + dev_kfree_skb(skb); + + return 0; +} + +static int cc33xx_set_assoc(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct ieee80211_bss_conf *bss_conf, + struct ieee80211_sta *sta, + struct ieee80211_vif *vif, u32 sta_rate_set) +{ + int ret; + + wlvif->aid = vif->cfg.aid; + wlvif->channel_type = cfg80211_get_chandef_type(&bss_conf->chanreq.oper); + wlvif->beacon_int = bss_conf->beacon_int; + wlvif->wmm_enabled = bss_conf->qos; + + wlvif->nontransmitted = bss_conf->nontransmitted; + cc33xx_debug(DEBUG_MAC80211, "set_assoc mbssid params: nonTxbssid: %d, idx: %d, max_ind: %d, trans_bssid: %pM, ema_ap: %d", + bss_conf->nontransmitted, bss_conf->bssid_index, + bss_conf->bssid_indicator, bss_conf->transmitter_bssid, + bss_conf->ema_ap); + wlvif->bssid_index = bss_conf->bssid_index; + wlvif->bssid_indicator = bss_conf->bssid_indicator; + memcpy(wlvif->transmitter_bssid, bss_conf->transmitter_bssid, ETH_ALEN); + + set_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags); + + ret = cc33xx_assoc_info_cfg(cc, wlvif, sta, wlvif->aid); + if (ret < 0) + return ret; + + if (sta_rate_set) { + wlvif->rate_set = cc33xx_tx_enabled_rates_get(cc, sta_rate_set, + wlvif->band); + } + + return ret; +} + +static int cc33xx_unset_assoc(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int ret; + bool sta = wlvif->bss_type == BSS_TYPE_STA_BSS; + + /* make sure we are connected (sta) joined */ + if (sta && !test_and_clear_bit(WLVIF_FLAG_STA_ASSOCIATED, + &wlvif->flags)) + return false; + + /* make sure we are joined (ibss) */ + if (!sta && test_and_clear_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags)) + return false; + + if (sta) { + /* use defaults when not associated */ + wlvif->aid = 0; + + /* free probe-request template */ + dev_kfree_skb(wlvif->probereq); + wlvif->probereq = NULL; + + /* disable beacon filtering */ + ret = cc33xx_acx_beacon_filter_opt(cc, wlvif, false); + if (ret < 0) + return ret; + } + + if (test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags)) { + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + cc33xx_cmd_stop_channel_switch(cc, wlvif); + ieee80211_chswitch_done(vif, false, 0); + cancel_delayed_work(&wlvif->channel_switch_work); + } + + return 0; +} + +static void cc33xx_set_band_rate(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + wlvif->basic_rate_set = wlvif->bitrate_masks[wlvif->band]; + wlvif->rate_set = wlvif->basic_rate_set; +} + +static void cc33xx_sta_handle_idle(struct cc33xx *cc, + struct cc33xx_vif *wlvif, bool idle) +{ + bool cur_idle = !test_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags); + + if (idle == cur_idle) + return; + + if (idle) { + clear_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags); + } else { + /* The current firmware only supports sched_scan in idle */ + if (cc->sched_vif == wlvif) + cc33xx_scan_sched_scan_stop(cc, wlvif); + + set_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags); + } +} + +static int cc33xx_config_vif(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct ieee80211_conf *conf, u64 changed) +{ + int ret; + + if (cc33xx_is_p2p_mgmt(wlvif)) + return 0; + + if (conf->power_level != wlvif->power_level && + (changed & IEEE80211_CONF_CHANGE_POWER)) { + ret = cc33xx_acx_tx_power(cc, wlvif, conf->power_level); + if (ret < 0) + return ret; + } + + return 0; +} + +static int cc33xx_op_config(struct ieee80211_hw *hw, u32 changed) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif; + struct ieee80211_conf *conf = &hw->conf; + int ret = 0; + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 config psm %s power %d %s changed 0x%x", + conf->flags & IEEE80211_CONF_PS ? "on" : "off", + conf->power_level, + conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use", + changed); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* configure each interface */ + cc33xx_for_each_wlvif(cc, wlvif) { + ret = cc33xx_config_vif(cc, wlvif, conf, changed); + if (ret < 0) + goto out; + } + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +struct cc33xx_filter_params { + bool enabled; + int mc_list_length; + u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN]; +}; + +static u64 cc33xx_op_prepare_multicast(struct ieee80211_hw *hw, + struct netdev_hw_addr_list *mc_list) +{ + struct cc33xx_filter_params *fp; + struct netdev_hw_addr *ha; + + fp = kzalloc(sizeof(*fp), GFP_ATOMIC); + if (!fp) { + cc33xx_error("Out of memory setting filters."); + return 0; + } + + /* update multicast filtering parameters */ + fp->mc_list_length = 0; + if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) { + fp->enabled = false; + cc33xx_debug(DEBUG_MAC80211, "mac80211 prepare multicast: too many addresses received, disable multicast filtering"); + } else { + fp->enabled = true; + netdev_hw_addr_list_for_each(ha, mc_list) { + memcpy(fp->mc_list[fp->mc_list_length], + ha->addr, ETH_ALEN); + fp->mc_list_length++; + } + } + + return (u64)(unsigned long)fp; +} + +#define CC33XX_SUPPORTED_FILTERS (FIF_ALLMULTI) + +static void cc33xx_op_configure_filter(struct ieee80211_hw *hw, + unsigned int changed, + unsigned int *total, u64 multicast) +{ + struct cc33xx_filter_params *fp = (void *)(unsigned long)multicast; + struct cc33xx *cc = hw->priv; + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 configure filter, FIF_ALLMULTI = %d", + *total & FIF_ALLMULTI); + + mutex_lock(&cc->mutex); + + *total &= CC33XX_SUPPORTED_FILTERS; + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (!fp) + cc33xx_acx_group_address_tbl(cc, false, NULL, 0); + else if (*total & FIF_ALLMULTI || !fp->enabled) + cc33xx_acx_group_address_tbl(cc, false, NULL, 0); + else + cc33xx_acx_group_address_tbl(cc, true, fp->mc_list, fp->mc_list_length); + +out: + mutex_unlock(&cc->mutex); + kfree(fp); +} + +static int cc33xx_record_ap_key(struct cc33xx *cc, struct cc33xx_vif *wlvif, + u8 id, u8 key_type, u8 key_size, const u8 *key, + u8 hlid, u32 tx_seq_32, u16 tx_seq_16) +{ + struct cc33xx_ap_key *ap_key; + int i; + + cc33xx_debug(DEBUG_CRYPT, "record ap key id %d", (int)id); + + if (key_size > MAX_KEY_SIZE) + return -EINVAL; + + /* Find next free entry in ap_keys. Also check we are not replacing + * an existing key. + */ + for (i = 0; i < MAX_NUM_KEYS; i++) { + if (!wlvif->ap.recorded_keys[i]) + break; + + if (wlvif->ap.recorded_keys[i]->id == id) { + cc33xx_warning("trying to record key replacement"); + return -EINVAL; + } + } + + if (i == MAX_NUM_KEYS) + return -EBUSY; + + ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL); + if (!ap_key) + return -ENOMEM; + + ap_key->id = id; + ap_key->key_type = key_type; + ap_key->key_size = key_size; + memcpy(ap_key->key, key, key_size); + ap_key->hlid = hlid; + ap_key->tx_seq_32 = tx_seq_32; + ap_key->tx_seq_16 = tx_seq_16; + + wlvif->ap.recorded_keys[i] = ap_key; + return 0; +} + +static void cc33xx_free_ap_keys(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int i; + + for (i = 0; i < MAX_NUM_KEYS; i++) { + kfree(wlvif->ap.recorded_keys[i]); + wlvif->ap.recorded_keys[i] = NULL; + } +} + +static int cc33xx_ap_init_hwenc(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int i, ret = 0; + struct cc33xx_ap_key *key; + bool wep_key_added = false; + + for (i = 0; i < MAX_NUM_KEYS; i++) { + u8 hlid; + + if (!wlvif->ap.recorded_keys[i]) + break; + + key = wlvif->ap.recorded_keys[i]; + hlid = key->hlid; + if (hlid == CC33XX_INVALID_LINK_ID) + hlid = wlvif->ap.bcast_hlid; + + ret = cc33xx_cmd_set_ap_key(cc, wlvif, KEY_ADD_OR_REPLACE, + key->id, key->key_type, + key->key_size, key->key, hlid, + key->tx_seq_32, key->tx_seq_16); + if (ret < 0) + goto out; + + if (key->key_type == KEY_WEP) + wep_key_added = true; + } + + if (wep_key_added) { + ret = cc33xx_cmd_set_default_wep_key(cc, wlvif->default_key, + wlvif->ap.bcast_hlid); + if (ret < 0) + goto out; + } + +out: + cc33xx_free_ap_keys(cc, wlvif); + return ret; +} + +static int cc33xx_config_key(struct cc33xx *cc, struct cc33xx_vif *wlvif, + u16 action, u8 id, u8 key_type, u8 key_size, + const u8 *key, u32 tx_seq_32, u16 tx_seq_16, + struct ieee80211_sta *sta) +{ + int ret; + bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); + + if (is_ap) { + struct cc33xx_station *wl_sta; + u8 hlid; + + if (sta) { + wl_sta = (struct cc33xx_station *)sta->drv_priv; + hlid = wl_sta->hlid; + } else { + hlid = wlvif->ap.bcast_hlid; + } + + if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) { + /* We do not support removing keys after AP shutdown. + * Pretend we do to make mac80211 happy. + */ + if (action != KEY_ADD_OR_REPLACE) + return 0; + + ret = cc33xx_record_ap_key(cc, wlvif, id, key_type, + key_size, key, hlid, + tx_seq_32, tx_seq_16); + } else { + ret = cc33xx_cmd_set_ap_key(cc, wlvif, action, id, + key_type, key_size, key, + hlid, tx_seq_32, tx_seq_16); + } + + if (ret < 0) + return ret; + } else { + const u8 *addr; + static const u8 bcast_addr[ETH_ALEN] = { + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff + }; + + addr = sta ? sta->addr : bcast_addr; + + if (is_zero_ether_addr(addr)) { + /* We dont support TX only encryption */ + return -EOPNOTSUPP; + } + + /* The cc33xx does not allow to remove unicast keys - they + * will be cleared automatically on next CMD_JOIN. Ignore the + * request silently, as we dont want the mac80211 to emit + * an error message. + */ + if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr)) + return 0; + + /* don't remove key if hlid was already deleted */ + if (action == KEY_REMOVE && + wlvif->sta.hlid == CC33XX_INVALID_LINK_ID) + return 0; + + ret = cc33xx_cmd_set_sta_key(cc, wlvif, action, id, key_type, + key_size, key, addr, tx_seq_32, + tx_seq_16); + if (ret < 0) + return ret; + } + + return 0; +} + +static int cc33xx_set_key(struct cc33xx *cc, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key_conf) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + u32 tx_seq_32 = 0; + u16 tx_seq_16 = 0; + u8 key_type; + u8 hlid; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 set key"); + + cc33xx_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta); + cc33xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x", + key_conf->cipher, key_conf->keyidx, + key_conf->keylen, key_conf->flags); + cc33xx_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen); + + if (wlvif->bss_type == BSS_TYPE_AP_BSS) { + if (sta) { + struct cc33xx_station *wl_sta = (void *)sta->drv_priv; + + hlid = wl_sta->hlid; + } else { + hlid = wlvif->ap.bcast_hlid; + } + } else { + hlid = wlvif->sta.hlid; + } + + if (hlid != CC33XX_INVALID_LINK_ID) { + u64 tx_seq = cc->links[hlid].total_freed_pkts; + + tx_seq_32 = CC33XX_TX_SECURITY_HI32(tx_seq); + tx_seq_16 = CC33XX_TX_SECURITY_LO16(tx_seq); + } + + switch (key_conf->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + key_type = KEY_WEP; + key_conf->hw_key_idx = key_conf->keyidx; + break; + case WLAN_CIPHER_SUITE_TKIP: + key_type = KEY_TKIP; + key_conf->hw_key_idx = key_conf->keyidx; + break; + case WLAN_CIPHER_SUITE_CCMP: + key_type = KEY_AES; + key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; + break; + case WLAN_CIPHER_SUITE_GCMP: + key_type = KEY_GCMP128; + key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; + break; + case WLAN_CIPHER_SUITE_CCMP_256: + key_type = KEY_CCMP256; + key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; + break; + case WLAN_CIPHER_SUITE_GCMP_256: + key_type = KEY_GCMP_256; + key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + key_type = KEY_IGTK; + break; + case WLAN_CIPHER_SUITE_BIP_CMAC_256: + key_type = KEY_CMAC_256; + break; + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + key_type = KEY_GMAC_128; + break; + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + key_type = KEY_GMAC_256; + break; + case CC33XX_CIPHER_SUITE_GEM: + key_type = KEY_GEM; + break; + default: + cc33xx_error("Unknown key algo 0x%x", key_conf->cipher); + + return -EOPNOTSUPP; + } + + switch (cmd) { + case SET_KEY: + ret = cc33xx_config_key(cc, wlvif, KEY_ADD_OR_REPLACE, + key_conf->keyidx, key_type, key_conf->keylen, + key_conf->key, tx_seq_32, tx_seq_16, sta); + if (ret < 0) { + cc33xx_error("Could not add or replace key"); + return ret; + } + + /* reconfiguring arp response if the unicast (or common) + * encryption key type was changed + */ + if (wlvif->bss_type == BSS_TYPE_STA_BSS && + (sta || key_type == KEY_WEP) && + wlvif->encryption_type != key_type) { + wlvif->encryption_type = key_type; + if (ret < 0) { + cc33xx_warning("build arp rsp failed: %d", ret); + return ret; + } + } + break; + + case DISABLE_KEY: + ret = cc33xx_config_key(cc, wlvif, KEY_REMOVE, key_conf->keyidx, + key_type, key_conf->keylen, + key_conf->key, 0, 0, sta); + if (ret < 0) { + cc33xx_error("Could not remove key"); + return ret; + } + break; + + default: + cc33xx_error("Unsupported key cmd 0x%x", cmd); + return -EOPNOTSUPP; + } + + return ret; +} + +static int cc33xx_hw_set_key(struct cc33xx *cc, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key_conf) +{ + bool special_enc; + int ret; + + cc33xx_debug(DEBUG_CRYPT, "extra spare keys before: %d", + cc->extra_spare_key_count); + + special_enc = key_conf->cipher == CC33XX_CIPHER_SUITE_GEM || + key_conf->cipher == WLAN_CIPHER_SUITE_TKIP; + + ret = cc33xx_set_key(cc, cmd, vif, sta, key_conf); + if (ret < 0) + goto out; + + /* when adding the first or removing the last GEM/TKIP key, + * we have to adjust the number of spare blocks. + */ + if (special_enc) { + if (cmd == SET_KEY) { + /* first key */ + cc->extra_spare_key_count++; + } else if (cmd == DISABLE_KEY) { + /* last key */ + cc->extra_spare_key_count--; + } + } + + cc33xx_debug(DEBUG_CRYPT, "extra spare keys after: %d", + cc->extra_spare_key_count); + +out: + return ret; +} + +static int cc33xx_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key_conf) +{ + struct cc33xx *cc = hw->priv; + int ret; + bool might_change_spare = key_conf->cipher == CC33XX_CIPHER_SUITE_GEM || + key_conf->cipher == WLAN_CIPHER_SUITE_TKIP; + + if (might_change_spare) { + /* stop the queues and flush to ensure the next packets are + * in sync with FW spare block accounting + */ + cc33xx_stop_queues(cc, CC33XX_QUEUE_STOP_REASON_SPARE_BLK); + cc33xx_tx_flush(cc); + } + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + ret = -EAGAIN; + goto out_wake_queues; + } + + ret = cc33xx_hw_set_key(cc, cmd, vif, sta, key_conf); + +out_wake_queues: + if (might_change_spare) + cc33xx_wake_queues(cc, CC33XX_QUEUE_STOP_REASON_SPARE_BLK); + + mutex_unlock(&cc->mutex); + + return ret; +} + +static void cc33xx_op_set_default_key_idx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + int key_idx) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 set default key idx %d", key_idx); + + /* we don't handle unsetting of default key */ + if (key_idx == -1) + return; + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out_unlock; + + wlvif->default_key = key_idx; + + /* the default WEP key needs to be configured at least once */ + if (wlvif->encryption_type == KEY_WEP) + cc33xx_cmd_set_default_wep_key(cc, key_idx, wlvif->sta.hlid); + +out_unlock: + mutex_unlock(&cc->mutex); +} + +static int cc33xx_op_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_scan_request *hw_req) +{ + struct cfg80211_scan_request *req = &hw_req->req; + struct cc33xx *cc = hw->priv; + int ret; + u8 *ssid = NULL; + size_t len = 0; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 hw scan"); + + if (req->n_ssids) { + ssid = req->ssids[0].ssid; + len = req->ssids[0].ssid_len; + } + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + /* We cannot return -EBUSY here because cfg80211 will expect + * a call to ieee80211_scan_completed if we do - in this case + * there won't be any call. + */ + ret = -EAGAIN; + goto out; + } + + /* fail if there is any role in ROC */ + if (find_first_bit(cc->roc_map, CC33XX_MAX_ROLES) < CC33XX_MAX_ROLES) { + /* don't allow scanning right now */ + ret = -EBUSY; + goto out; + } + + ret = cc33xx_scan(hw->priv, vif, ssid, len, req); + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static void cc33xx_op_cancel_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct cfg80211_scan_info info = { + .aborted = true, + }; + int ret; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 cancel hw scan"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (cc->scan.state == CC33XX_SCAN_STATE_IDLE) + goto out; + + if (cc->scan.state != CC33XX_SCAN_STATE_DONE) { + ret = cc33xx_scan_stop(cc, wlvif); + if (ret < 0) + goto out; + } + + /* Rearm the tx watchdog just before idling scan. This + * prevents just-finished scans from triggering the watchdog + */ + cc33xx_rearm_tx_watchdog_locked(cc); + + cc->scan.state = CC33XX_SCAN_STATE_IDLE; + memset(cc->scan.scanned_ch, 0, sizeof(cc->scan.scanned_ch)); + cc->scan_wlvif = NULL; + cc->scan.req = NULL; + ieee80211_scan_completed(cc->hw, &info); + +out: + mutex_unlock(&cc->mutex); + + cancel_delayed_work_sync(&cc->scan_complete_work); +} + +static int cc33xx_op_sched_scan_start(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_sched_scan_request *req, + struct ieee80211_scan_ies *ies) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + + cc33xx_debug(DEBUG_MAC80211, "cc33xx_op_sched_scan_start"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + ret = -EAGAIN; + goto out; + } + + ret = cc33xx_sched_scan_start(cc, wlvif, req, ies); + if (ret < 0) + goto out; + + cc->sched_vif = wlvif; + +out: + mutex_unlock(&cc->mutex); + return ret; +} + +static int cc33xx_op_sched_scan_stop(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + + cc33xx_debug(DEBUG_MAC80211, "cc33xx_op_sched_scan_stop"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* command to stop periodic scan was sent from mac80211 + * mark than stop command is from mac80211 and release sched_vif + */ + cc->mac80211_scan_stopped = true; + cc->sched_vif = NULL; + cc33xx_scan_sched_scan_stop(cc, wlvif); + +out: + mutex_unlock(&cc->mutex); + + return 0; +} + +static int cc33xx_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value) +{ + return 0; +} + +static int cc33xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + return 0; +} + +static int cc33xx_bss_erp_info_changed(struct cc33xx *cc, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u64 changed) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret = 0; + + if (changed & BSS_CHANGED_ERP_SLOT) { + if (bss_conf->use_short_slot) + ret = cc33xx_acx_slot(cc, wlvif, SLOT_TIME_SHORT); + else + ret = cc33xx_acx_slot(cc, wlvif, SLOT_TIME_LONG); + if (ret < 0) { + cc33xx_warning("Set slot time failed %d", ret); + goto out; + } + } + + if (changed & BSS_CHANGED_ERP_PREAMBLE) { + if (bss_conf->use_short_preamble) + cc33xx_acx_set_preamble(cc, wlvif, ACX_PREAMBLE_SHORT); + else + cc33xx_acx_set_preamble(cc, wlvif, ACX_PREAMBLE_LONG); + } + + if (changed & BSS_CHANGED_ERP_CTS_PROT) { + if (bss_conf->use_cts_prot) { + ret = cc33xx_acx_cts_protect(cc, wlvif, + CTSPROTECT_ENABLE); + } else { + ret = cc33xx_acx_cts_protect(cc, wlvif, + CTSPROTECT_DISABLE); + } + + if (ret < 0) { + cc33xx_warning("Set ctsprotect failed %d", ret); + goto out; + } + } + +out: + return ret; +} + +static int cc33xx_set_beacon_template(struct cc33xx *cc, + struct ieee80211_vif *vif, bool is_ap) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable); + struct sk_buff *beacon = ieee80211_beacon_get(cc->hw, vif, 0); + + struct cc33xx_cmd_set_beacon_info *cmd; + + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); + if (!cmd) { + ret = -ENOMEM; + goto out; + } + + if (!beacon) { + ret = -EINVAL; + goto end_bcn; + } + + cc33xx_debug(DEBUG_MASTER, "beacon updated"); + + ret = cc33xx_ssid_set(wlvif, beacon, ieoffset); + if (ret < 0) + goto end_bcn; + + cmd->role_id = wlvif->role_id; + cmd->beacon_len = cpu_to_le16(beacon->len); + + memcpy(cmd->beacon, beacon->data, beacon->len); + + ret = cc33xx_cmd_send(cc, CMD_AP_SET_BEACON_INFO, cmd, sizeof(*cmd), 0); + if (ret < 0) + goto end_bcn; + +end_bcn: + dev_kfree_skb(beacon); + kfree(cmd); +out: + return ret; +} + +static int cc33xx_bss_beacon_info_changed(struct cc33xx *cc, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changed) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); + int ret = 0; + + if (changed & BSS_CHANGED_BEACON_INT) { + cc33xx_debug(DEBUG_MASTER, "beacon interval updated: %d", + bss_conf->beacon_int); + + wlvif->beacon_int = bss_conf->beacon_int; + } + + if (changed & BSS_CHANGED_BEACON) { + ret = cc33xx_set_beacon_template(cc, vif, is_ap); + if (ret < 0) + goto out; + + if (test_and_clear_bit(WLVIF_FLAG_BEACON_DISABLED, + &wlvif->flags)) { + ret = cmd_dfs_master_restart(cc, wlvif); + if (ret < 0) + goto out; + } + } +out: + if (ret != 0) + cc33xx_error("beacon info change failed: %d", ret); + + return ret; +} + +/* AP mode changes */ +static void cc33xx_bss_info_changed_ap(struct cc33xx *cc, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u64 changed) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret = 0; + + if (changed & BSS_CHANGED_BASIC_RATES) { + u32 rates = bss_conf->basic_rates; + u32 supported_rates = 0; + + wlvif->basic_rate_set = cc33xx_tx_enabled_rates_get(cc, rates, + wlvif->band); + wlvif->basic_rate = cc33xx_tx_min_rate_get(cc, + wlvif->basic_rate_set); + + supported_rates = CONF_TX_ENABLED_RATES | CONF_TX_MCS_RATES; + ret = cc33xx_update_ap_rates(cc, wlvif->role_id, + wlvif->basic_rate_set, + supported_rates); + + ret = cc33xx_set_beacon_template(cc, vif, true); + if (ret < 0) + goto out; + } + + ret = cc33xx_bss_beacon_info_changed(cc, vif, bss_conf, changed); + if (ret < 0) + goto out; + + if (changed & BSS_CHANGED_BEACON_ENABLED) { + if (bss_conf->enable_beacon) { + if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) { + ret = cc33xx_cmd_role_start_ap(cc, wlvif); + if (ret < 0) + goto out; + + ret = cc33xx_ap_init_hwenc(cc, wlvif); + if (ret < 0) + goto out; + + set_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags); + cc33xx_debug(DEBUG_AP, "started AP"); + } + } else { + if (test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) { + /* AP might be in ROC in case we have just + * sent auth reply. handle it. + */ + if (test_bit(wlvif->role_id, cc->roc_map)) + cc33xx_croc(cc, wlvif->role_id); + + ret = cc33xx_cmd_role_stop_ap(cc, wlvif); + if (ret < 0) + goto out; + + clear_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags); + clear_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, + &wlvif->flags); + cc33xx_debug(DEBUG_AP, "stopped AP"); + } + } + } + + ret = cc33xx_bss_erp_info_changed(cc, vif, bss_conf, changed); + if (ret < 0) + goto out; + +out: + return; +} + +static int cc33xx_set_bssid(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct ieee80211_bss_conf *bss_conf, + struct ieee80211_vif *vif, + u32 sta_rate_set) +{ + u32 rates; + + cc33xx_debug(DEBUG_MAC80211, "changed_bssid: %pM, aid: %d, bcn_int: %d, brates: 0x%x sta_rate_set: 0x%x, nontx: %d", + bss_conf->bssid, vif->cfg.aid, bss_conf->beacon_int, + bss_conf->basic_rates, sta_rate_set, + bss_conf->nontransmitted); + + wlvif->beacon_int = bss_conf->beacon_int; + rates = bss_conf->basic_rates; + wlvif->basic_rate_set = cc33xx_tx_enabled_rates_get(cc, rates, + wlvif->band); + wlvif->basic_rate = cc33xx_tx_min_rate_get(cc, wlvif->basic_rate_set); + + if (sta_rate_set) { + wlvif->rate_set = cc33xx_tx_enabled_rates_get(cc, sta_rate_set, + wlvif->band); + } + + wlvif->nontransmitted = bss_conf->nontransmitted; + cc33xx_debug(DEBUG_MAC80211, "changed_mbssid: nonTxbssid: %d, idx: %d, max_ind: %d, trans_bssid: %pM, ema_ap: %d", + bss_conf->nontransmitted, bss_conf->bssid_index, + bss_conf->bssid_indicator, bss_conf->transmitter_bssid, + bss_conf->ema_ap); + + if (bss_conf->nontransmitted) { + wlvif->bssid_index = bss_conf->bssid_index; + wlvif->bssid_indicator = bss_conf->bssid_indicator; + memcpy(wlvif->transmitter_bssid, + bss_conf->transmitter_bssid, + ETH_ALEN); + } + + /* we only support sched_scan while not connected */ + if (cc->sched_vif == wlvif) + cc33xx_scan_sched_scan_stop(cc, wlvif); + + cc33xx_set_ssid(cc, wlvif); + + set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags); + + return 0; +} + +static int cc33xx_clear_bssid(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + int ret; + + /* revert back to minimum rates for the current band */ + cc33xx_set_band_rate(cc, wlvif); + wlvif->basic_rate = cc33xx_tx_min_rate_get(cc, wlvif->basic_rate_set); + + if (wlvif->bss_type == BSS_TYPE_STA_BSS && + test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags)) { + ret = cc33xx_cmd_role_stop_sta(cc, wlvif); + if (ret < 0) + return ret; + } + + clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags); + return 0; +} + +static void cc33xx_sta_set_he(struct cc33xx *cc, struct cc33xx_vif *wlvif, bool has_he) +{ + struct cc33xx_vif *wlvif_itr; + u8 he_count = 0; + + wlvif->sta_has_he = has_he; + + if (has_he) + cc33xx_info("HE Enabled"); + else + cc33xx_info("HE Disabled"); + + cc33xx_for_each_wlvif_sta(cc, wlvif_itr) { + /* check for all valid link id's */ + if (wlvif_itr->role_id != 0xFF && wlvif_itr->sta_has_he) + he_count++; + } + + /* There can't be two stations connected with HE supported links */ + if (he_count > 1) + cc33xx_error("Both station interfaces has HE enabled!"); +} + +/* STA/IBSS mode changes */ +static void cc33xx_bss_info_changed_sta(struct cc33xx *cc, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u64 changed) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + bool do_join = false; + bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS); + bool ibss_joined = false; + u32 sta_rate_set = 0; + int ret; + struct ieee80211_sta *sta = NULL; + bool sta_exists = false; + struct ieee80211_sta_ht_cap sta_ht_cap; + struct ieee80211_sta_he_cap sta_he_cap; + + if (is_ibss) { + ret = cc33xx_bss_beacon_info_changed(cc, vif, + bss_conf, changed); + if (ret < 0) + goto out; + } + + if (changed & BSS_CHANGED_IBSS) { + if (vif->cfg.ibss_joined) { + set_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags); + ibss_joined = true; + } else { + cc33xx_unset_assoc(cc, wlvif); + cc33xx_cmd_role_stop_sta(cc, wlvif); + } + } + + if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined) + do_join = true; + + /* Need to update the SSID (for filtering etc) */ + if ((changed & BSS_CHANGED_BEACON) && ibss_joined) + do_join = true; + + if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) { + cc33xx_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s", + bss_conf->enable_beacon ? "enabled" : "disabled"); + + do_join = true; + } + + if (changed & BSS_CHANGED_IDLE && !is_ibss) + cc33xx_sta_handle_idle(cc, wlvif, vif->cfg.idle); + + if (changed & BSS_CHANGED_CQM) + wlvif->rssi_thold = bss_conf->cqm_rssi_thold; + + if (changed & (BSS_CHANGED_BSSID | BSS_CHANGED_HT | BSS_CHANGED_ASSOC)) { + rcu_read_lock(); + sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (sta) { + u8 *rx_mask = sta->deflink.ht_cap.mcs.rx_mask; + + /* save the supp_rates of the ap */ + sta_rate_set = sta->deflink.supp_rates[wlvif->band]; + if (sta->deflink.ht_cap.ht_supported) { + sta_rate_set |= + (rx_mask[0] << HW_HT_RATES_OFFSET) | + (rx_mask[1] << HW_MIMO_RATES_OFFSET); + } + sta_ht_cap = sta->deflink.ht_cap; + sta_he_cap = sta->deflink.he_cap; + sta_exists = true; + } + + rcu_read_unlock(); + } + + if (changed & BSS_CHANGED_BSSID) { + if (!is_zero_ether_addr(bss_conf->bssid)) { + ret = cc33xx_set_bssid(cc, wlvif, + bss_conf, vif, sta_rate_set); + if (ret < 0) + goto out; + + /* Need to update the BSSID (for filtering etc) */ + do_join = true; + } else { + ret = cc33xx_clear_bssid(cc, wlvif); + if (ret < 0) + goto out; + } + } + + if (changed & BSS_CHANGED_IBSS) { + cc33xx_debug(DEBUG_ADHOC, "ibss_joined: %d", + vif->cfg.ibss_joined); + + if (vif->cfg.ibss_joined) { + u32 rates = bss_conf->basic_rates; + + wlvif->basic_rate_set = + cc33xx_tx_enabled_rates_get(cc, rates, + wlvif->band); + wlvif->basic_rate = + cc33xx_tx_min_rate_get(cc, + wlvif->basic_rate_set); + + /* by default, use 11b + OFDM rates */ + wlvif->rate_set = CONF_TX_IBSS_DEFAULT_RATES; + } + } + + if ((changed & BSS_CHANGED_BEACON_INFO) && bss_conf->dtim_period) { + /* enable beacon filtering */ + ret = cc33xx_acx_beacon_filter_opt(cc, wlvif, true); + if (ret < 0) + goto out; + } + + ret = cc33xx_bss_erp_info_changed(cc, vif, bss_conf, changed); + if (ret < 0) + goto out; + + if (do_join) { + ret = cc33xx_join(cc, wlvif); + if (ret < 0) { + cc33xx_warning("cmd join failed %d", ret); + goto out; + } + } + + if (changed & BSS_CHANGED_ASSOC) { + if (vif->cfg.assoc) { + ret = cc33xx_set_assoc(cc, wlvif, bss_conf, sta, vif, + sta_rate_set); + if (ret < 0) + goto out; + + if (test_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags)) + cc33xx_set_authorized(cc, wlvif); + + if (sta) + cc33xx_sta_set_he(cc, wlvif, sta->deflink.he_cap.has_he); + + } else { + cc33xx_unset_assoc(cc, wlvif); + } + } + + if (changed & BSS_CHANGED_PS) { + if (vif->cfg.ps && + test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) && + !test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) { + int ps_mode; + char *ps_mode_str; + + if (cc->conf.host_conf.conn.forced_ps) { + ps_mode = STATION_POWER_SAVE_MODE; + ps_mode_str = "forced"; + } else { + ps_mode = STATION_AUTO_PS_MODE; + ps_mode_str = "auto"; + } + + cc33xx_debug(DEBUG_PSM, "%s ps enabled", ps_mode_str); + + ret = cc33xx_ps_set_mode(cc, wlvif, ps_mode); + if (ret < 0) + cc33xx_warning("enter %s ps failed %d", + ps_mode_str, ret); + } else if (!vif->cfg.ps && test_bit(WLVIF_FLAG_IN_PS, + &wlvif->flags)) { + cc33xx_debug(DEBUG_PSM, "auto ps disabled"); + + ret = cc33xx_ps_set_mode(cc, wlvif, + STATION_ACTIVE_MODE); + if (ret < 0) + cc33xx_warning("exit auto ps failed %d", ret); + } + } + + /* Handle new association with HT. Do this after join. */ + if (sta_exists) { + bool enabled = bss_conf->chanreq.oper.width != + NL80211_CHAN_WIDTH_20_NOHT; + cc33xx_debug(DEBUG_CMD, "cc33xx_hw_set_peer_cap %x", + wlvif->rate_set); + ret = cc33xx_acx_set_peer_cap(cc, &sta_ht_cap, &sta_he_cap, + wlvif, enabled, wlvif->rate_set, + wlvif->sta.hlid); + if (ret < 0) { + cc33xx_warning("Set ht cap failed %d", ret); + goto out; + } + + if (enabled) { + ret = cc33xx_acx_set_ht_information(cc, wlvif, + bss_conf->ht_operation_mode, + bss_conf->he_oper.params, + bss_conf->he_oper.nss_set); + if (ret < 0) { + cc33xx_warning("Set ht information failed %d", + ret); + goto out; + } + } + } + + /* Handle arp filtering. Done after join. */ + if ((changed & BSS_CHANGED_ARP_FILTER) || + (!is_ibss && (changed & BSS_CHANGED_QOS))) { + __be32 addr = vif->cfg.arp_addr_list[0]; + + wlvif->sta.qos = bss_conf->qos; + WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS); + + if (vif->cfg.arp_addr_cnt == 1 && vif->cfg.assoc) { + wlvif->ip_addr = addr; + /* The template should have been configured only upon + * association. however, it seems that the correct ip + * isn't being set (when sending), so we have to + * reconfigure the template upon every ip change. + */ + if (ret < 0) { + cc33xx_warning("build arp rsp failed: %d", ret); + goto out; + } + + } else { + wlvif->ip_addr = 0; + } + + if (ret < 0) + goto out; + } + +out: + return; +} + +static void cc33xx_op_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u64 changed) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS); + int ret, set_power; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 bss info role %d changed 0x%x", + wlvif->role_id, (int)changed); + + /* make sure to cancel pending disconnections if our association + * state changed + */ + if (!is_ap && (changed & BSS_CHANGED_ASSOC)) + cancel_delayed_work_sync(&wlvif->connection_loss_work); + + if (is_ap && (changed & BSS_CHANGED_BEACON_ENABLED) && + !bss_conf->enable_beacon) + cc33xx_tx_flush(cc); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))) + goto out; + + if ((changed & BSS_CHANGED_TXPOWER) && bss_conf->txpower != wlvif->power_level) { + /* bss_conf->txpower is initialized with a default value, + * meaning the power has not been set and should be ignored, use + * max value instead + */ + set_power = (bss_conf->txpower == INT_MIN) ? + CC33XX_MAX_TXPWR : bss_conf->txpower; + ret = cc33xx_acx_tx_power(cc, wlvif, set_power); + + if (ret < 0) + goto out; + } + + if (is_ap) + cc33xx_bss_info_changed_ap(cc, vif, bss_conf, changed); + else + cc33xx_bss_info_changed_sta(cc, vif, bss_conf, changed); + +out: + mutex_unlock(&cc->mutex); +} + +static int cc33xx_op_add_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx) +{ + cc33xx_debug(DEBUG_MAC80211, "mac80211 add chanctx %d (type %d)", + ieee80211_frequency_to_channel(ctx->def.chan->center_freq), + cfg80211_get_chandef_type(&ctx->def)); + return 0; +} + +static void cc33xx_op_remove_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx) +{ + cc33xx_debug(DEBUG_MAC80211, "mac80211 remove chanctx %d (type %d)", + ieee80211_frequency_to_channel(ctx->def.chan->center_freq), + cfg80211_get_chandef_type(&ctx->def)); +} + +static void cc33xx_op_change_chanctx(struct ieee80211_hw *hw, + struct ieee80211_chanctx_conf *ctx, + u32 changed) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif; + int channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 change chanctx %d (type %d) changed 0x%x", + channel, cfg80211_get_chandef_type(&ctx->def), changed); + + mutex_lock(&cc->mutex); + + cc33xx_for_each_wlvif(cc, wlvif) { + struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif); + + rcu_read_lock(); + if (rcu_access_pointer(vif->bss_conf.chanctx_conf) != ctx) { + rcu_read_unlock(); + continue; + } + rcu_read_unlock(); + + /* start radar if needed */ + if (changed & IEEE80211_CHANCTX_CHANGE_RADAR && + wlvif->bss_type == BSS_TYPE_AP_BSS && + ctx->radar_enabled && !wlvif->radar_enabled && + ctx->def.chan->dfs_state == NL80211_DFS_USABLE) { + cc33xx_debug(DEBUG_MAC80211, "Start radar detection"); + cmd_set_cac(cc, wlvif, true); + wlvif->radar_enabled = true; + } + } + + mutex_unlock(&cc->mutex); +} + +static int cc33xx_op_assign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *link_conf, + struct ieee80211_chanctx_conf *ctx) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int channel = ieee80211_frequency_to_channel(ctx->def.chan->center_freq); + + cc33xx_debug(DEBUG_MAC80211, "mac80211 assign chanctx (role %d) %d (type %d) (radar %d dfs_state %d)", + wlvif->role_id, + channel, cfg80211_get_chandef_type(&ctx->def), + ctx->radar_enabled, ctx->def.chan->dfs_state); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))) + goto out; + + wlvif->band = ctx->def.chan->band; + wlvif->channel = channel; + wlvif->channel_type = cfg80211_get_chandef_type(&ctx->def); + + /* update default rates according to the band */ + cc33xx_set_band_rate(cc, wlvif); + + if (ctx->radar_enabled && ctx->def.chan->dfs_state == NL80211_DFS_USABLE) { + cc33xx_debug(DEBUG_MAC80211, "Start radar detection"); + cmd_set_cac(cc, wlvif, true); + wlvif->radar_enabled = true; + } + +out: + mutex_unlock(&cc->mutex); + + return 0; +} + +static void cc33xx_op_unassign_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *link_conf, + struct ieee80211_chanctx_conf *ctx) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 unassign chanctx (role %d) %d (type %d)", + wlvif->role_id, + ieee80211_frequency_to_channel(ctx->def.chan->center_freq), + cfg80211_get_chandef_type(&ctx->def)); + + cc33xx_tx_flush(cc); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))) + goto out; + + if (wlvif->radar_enabled) { + cc33xx_debug(DEBUG_MAC80211, "Stop radar detection"); + cmd_set_cac(cc, wlvif, false); + wlvif->radar_enabled = false; + } + +out: + mutex_unlock(&cc->mutex); +} + +static int cc33xx_switch_vif_chan(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct ieee80211_chanctx_conf *new_ctx) +{ + int channel = ieee80211_frequency_to_channel(new_ctx->def.chan->center_freq); + + cc33xx_debug(DEBUG_MAC80211, + "switch vif (role %d) %d -> %d chan_type: %d", + wlvif->role_id, wlvif->channel, channel, + cfg80211_get_chandef_type(&new_ctx->def)); + + cc33xx_debug(DEBUG_MAC80211, "switch vif bss_type: %d", wlvif->bss_type); + + wlvif->band = new_ctx->def.chan->band; + wlvif->channel = channel; + wlvif->channel_type = cfg80211_get_chandef_type(&new_ctx->def); + + if (wlvif->bss_type != BSS_TYPE_AP_BSS) + return 0; + + WARN_ON(!test_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags)); + + if (wlvif->radar_enabled) { + cc33xx_debug(DEBUG_MAC80211, "Stop radar detection"); + cmd_set_cac(cc, wlvif, false); + wlvif->radar_enabled = false; + } + + /* start radar if needed */ + if (new_ctx->radar_enabled) { + cc33xx_debug(DEBUG_MAC80211, "Start radar detection"); + cmd_set_cac(cc, wlvif, true); + wlvif->radar_enabled = true; + } + + return 0; +} + +static int cc33xx_op_switch_vif_chanctx(struct ieee80211_hw *hw, + struct ieee80211_vif_chanctx_switch *vifs, + int n_vifs, + enum ieee80211_chanctx_switch_mode mode) +{ + struct cc33xx *cc = hw->priv; + int i, ret; + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 switch chanctx n_vifs %d mode %d", n_vifs, mode); + + mutex_lock(&cc->mutex); + + for (i = 0; i < n_vifs; i++) { + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vifs[i].vif); + + ret = cc33xx_switch_vif_chan(cc, wlvif, vifs[i].new_ctx); + if (ret) + goto out; + } + +out: + mutex_unlock(&cc->mutex); + + return 0; +} + +static int cc33xx_op_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + unsigned int link_id, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + u8 ps_scheme; + int ret = 0; + + if (cc33xx_is_p2p_mgmt(wlvif)) + return 0; + + mutex_lock(&cc->mutex); + + cc33xx_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue); + + if (params->uapsd) + ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER; + else + ps_scheme = CONF_PS_SCHEME_LEGACY; + + if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) + goto out; + + ret = cc33xx_tx_param_cfg(cc, wlvif, cc33xx_tx_get_queue(queue), + params->cw_min, params->cw_max, params->aifs, + params->txop << 5, params->acm, ps_scheme, + params->mu_edca, params->mu_edca_param_rec.aifsn, + params->mu_edca_param_rec.ecw_min_max, + params->mu_edca_param_rec.mu_edca_timer); + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static u64 cc33xx_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + u64 mactime = ULLONG_MAX; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 get tsf"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + cc33xx_acx_tsf_info(cc, wlvif, &mactime); + +out: + mutex_unlock(&cc->mutex); + + return mactime; +} + +static int cc33xx_op_get_survey(struct ieee80211_hw *hw, int idx, + struct survey_info *survey) +{ + struct ieee80211_conf *conf = &hw->conf; + + if (idx != 0) + return -ENOENT; + + survey->channel = conf->chandef.chan; + survey->filled = 0; + return 0; +} + +static int cc33xx_allocate_sta(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct ieee80211_sta *sta) +{ + struct cc33xx_station *wl_sta; + int ret; + + if (cc->active_sta_count >= CC33XX_MAX_AP_STATIONS) { + cc33xx_warning("could not allocate HLID - too much stations"); + return -EBUSY; + } + + wl_sta = (struct cc33xx_station *)sta->drv_priv; + + ret = cc33xx_set_link(cc, wlvif, wl_sta->hlid); + + if (ret < 0) { + cc33xx_warning("could not allocate HLID - too many links"); + return -EBUSY; + } + + /* use the previous security seq, if this is a recovery/resume */ + cc->links[wl_sta->hlid].total_freed_pkts = wl_sta->total_freed_pkts; + + set_bit(wl_sta->hlid, wlvif->ap.sta_hlid_map); + memcpy(cc->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN); + cc->active_sta_count++; + return 0; +} + +void cc33xx_free_sta(struct cc33xx *cc, struct cc33xx_vif *wlvif, u8 hlid) +{ + if (!test_bit(hlid, wlvif->ap.sta_hlid_map)) + return; + + clear_bit(hlid, wlvif->ap.sta_hlid_map); + __clear_bit(hlid, &cc->ap_ps_map); + __clear_bit(hlid, &cc->ap_fw_ps_map); + + /* save the last used PN in the private part of iee80211_sta, + * in case of recovery/suspend + */ + cc33xx_save_freed_pkts_addr(cc, wlvif, hlid, cc->links[hlid].addr); + + cc33xx_clear_link(cc, wlvif, &hlid); + cc->active_sta_count--; + + /* rearm the tx watchdog when the last STA is freed - give the FW a + * chance to return STA-buffered packets before complaining. + */ + if (cc->active_sta_count == 0) + cc33xx_rearm_tx_watchdog_locked(cc); +} + +static int cc33xx_sta_add(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct ieee80211_sta *sta) +{ + struct cc33xx_station *wl_sta; + int ret = 0; + u8 hlid; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid); + + wl_sta = (struct cc33xx_station *)sta->drv_priv; + ret = cc33xx_cmd_add_peer(cc, wlvif, sta, &hlid, 0); + if (ret < 0) + return ret; + + wl_sta->hlid = hlid; + ret = cc33xx_allocate_sta(cc, wlvif, sta); + + return ret; +} + +static int cc33xx_sta_remove(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct ieee80211_sta *sta) +{ + struct cc33xx_station *wl_sta; + int ret = 0, id; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid); + + wl_sta = (struct cc33xx_station *)sta->drv_priv; + id = wl_sta->hlid; + if (WARN_ON(!test_bit(id, wlvif->ap.sta_hlid_map))) + return -EINVAL; + + ret = cc33xx_cmd_remove_peer(cc, wlvif, wl_sta->hlid); + if (ret < 0) + return ret; + + cc33xx_free_sta(cc, wlvif, wl_sta->hlid); + return ret; +} + +static void cc33xx_roc_if_possible(struct cc33xx *cc, struct cc33xx_vif *wlvif) +{ + if (find_first_bit(cc->roc_map, CC33XX_MAX_ROLES) < CC33XX_MAX_ROLES) + return; + + if (WARN_ON(wlvif->role_id == CC33XX_INVALID_ROLE_ID)) + return; + + cc33xx_roc(cc, wlvif, wlvif->role_id, wlvif->band, wlvif->channel); +} + +/* when wl_sta is NULL, we treat this call as if coming from a + * pending auth reply. + * cc->mutex must be taken and the FW must be awake when the call + * takes place. + */ +void cc33xx_update_inconn_sta(struct cc33xx *cc, struct cc33xx_vif *wlvif, + struct cc33xx_station *wl_sta, bool in_conn) +{ + cc33xx_debug(DEBUG_CMD, "update_inconn_sta: in_conn=%d count=%d, pending_auth=%d", + in_conn, + wlvif->inconn_count, wlvif->ap_pending_auth_reply); + + if (in_conn) { + if (WARN_ON(wl_sta && wl_sta->in_connection)) + return; + + if (!wlvif->ap_pending_auth_reply && !wlvif->inconn_count) { + cc33xx_roc_if_possible(cc, wlvif); + if (test_bit(wlvif->role_id, cc->roc_map)) { + unsigned long roc_cmplt_jiffies = + msecs_to_jiffies(CC33xx_PEND_ROC_COMPLETE_TIMEOUT); + + /* set timer on croc timeout */ + wlvif->pending_auth_reply_time = jiffies; + cancel_delayed_work(&wlvif->roc_timeout_work); + + cc33xx_debug(DEBUG_AP, "delay queue roc_timeout_work"); + + ieee80211_queue_delayed_work(cc->hw, + &wlvif->roc_timeout_work, + roc_cmplt_jiffies); + } + } + + if (wl_sta) { + wl_sta->in_connection = true; + wlvif->inconn_count++; + } else { + wlvif->ap_pending_auth_reply = true; + } + } else { + if (wl_sta && !wl_sta->in_connection) + return; + + if (WARN_ON(!wl_sta && !wlvif->ap_pending_auth_reply)) + return; + + if (WARN_ON(wl_sta && !wlvif->inconn_count)) + return; + + if (wl_sta) { + wl_sta->in_connection = false; + wlvif->inconn_count--; + } else { + wlvif->ap_pending_auth_reply = false; + } + + if (!wlvif->inconn_count && !wlvif->ap_pending_auth_reply && + test_bit(wlvif->role_id, cc->roc_map)) { + cc33xx_croc(cc, wlvif->role_id); + /* remove timer for croc t/o */ + cc33xx_debug(DEBUG_AP, "Cancel pending_roc timeout"); + cancel_delayed_work(&wlvif->roc_timeout_work); + } + } + cc33xx_debug(DEBUG_CMD, "update_inconn_sta done: in_conn=%d count=%d, pending_auth=%d", + in_conn, wlvif->inconn_count, + wlvif->ap_pending_auth_reply); +} + +static int cc33xx_update_sta_state(struct cc33xx *cc, + struct cc33xx_vif *wlvif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct cc33xx_station *wl_sta; + bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS; + bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS; + int ret; + + wl_sta = (struct cc33xx_station *)sta->drv_priv; + + /* Add station (AP mode) */ + if (is_ap && old_state == IEEE80211_STA_NOTEXIST && new_state == IEEE80211_STA_NONE) { + ret = cc33xx_sta_add(cc, wlvif, sta); + if (ret) + return ret; + + cc33xx_update_inconn_sta(cc, wlvif, wl_sta, true); + } + + /* Remove station (AP mode) */ + if (is_ap && old_state == IEEE80211_STA_NONE && new_state == IEEE80211_STA_NOTEXIST) { + /* must not fail */ + cc33xx_sta_remove(cc, wlvif, sta); + + cc33xx_update_inconn_sta(cc, wlvif, wl_sta, false); + } + + /* Authorize station (AP mode) */ + if (is_ap && new_state == IEEE80211_STA_AUTHORIZED) { + /* reconfigure peer */ + ret = cc33xx_cmd_add_peer(cc, wlvif, sta, NULL, true); + if (ret < 0) + return ret; + + cc33xx_update_inconn_sta(cc, wlvif, wl_sta, false); + } + + /* Authorize station */ + if (is_sta && new_state == IEEE80211_STA_AUTHORIZED) { + set_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags); + ret = cc33xx_set_authorized(cc, wlvif); + if (ret) + return ret; + } + + if (is_sta && old_state == IEEE80211_STA_AUTHORIZED && new_state == IEEE80211_STA_ASSOC) { + clear_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags); + clear_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags); + } + + /* save seq number on disassoc (suspend) */ + if (is_sta && old_state == IEEE80211_STA_ASSOC && new_state == IEEE80211_STA_AUTH) { + cc33xx_save_freed_pkts(cc, wlvif, wlvif->sta.hlid, sta); + wlvif->total_freed_pkts = 0; + } + + /* restore seq number on assoc (resume) */ + if (is_sta && old_state == IEEE80211_STA_AUTH && new_state == IEEE80211_STA_ASSOC) + wlvif->total_freed_pkts = wl_sta->total_freed_pkts; + + /* clear ROCs on failure or authorization */ + if (is_sta && + (new_state == IEEE80211_STA_AUTHORIZED || + new_state == IEEE80211_STA_NOTEXIST)) { + if (test_bit(wlvif->role_id, cc->roc_map)) + cc33xx_croc(cc, wlvif->role_id); + } + + if (is_sta && (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE)) { + if (find_first_bit(cc->roc_map, + CC33XX_MAX_ROLES) >= CC33XX_MAX_ROLES) { + WARN_ON(wlvif->role_id == CC33XX_INVALID_ROLE_ID); + cc33xx_roc(cc, wlvif, wlvif->role_id, + wlvif->band, wlvif->channel); + } + } + + return 0; +} + +static int cc33xx_op_sta_state(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 sta %d state=%d->%d", + sta->aid, old_state, new_state); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + ret = -EBUSY; + goto out; + } + + ret = cc33xx_update_sta_state(cc, wlvif, sta, old_state, new_state); + +out: + mutex_unlock(&cc->mutex); + if (new_state < old_state) + return 0; + return ret; +} + +static int cc33xx_op_ampdu_action(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_ampdu_params *params) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + u8 hlid, *ba_bitmap; + struct ieee80211_sta *sta = params->sta; + enum ieee80211_ampdu_mlme_action action = params->action; + u16 tid = params->tid; + u16 *ssn = ¶ms->ssn; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 ampdu action %d tid %d", + action, tid); + + /* sanity check - the fields in FW are only 8bits wide */ + if (WARN_ON(tid > 0xFF)) + return -EOPNOTSUPP; + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + ret = -EAGAIN; + goto out; + } + + if (wlvif->bss_type == BSS_TYPE_STA_BSS) { + hlid = wlvif->sta.hlid; + } else if (wlvif->bss_type == BSS_TYPE_AP_BSS) { + struct cc33xx_station *wl_sta; + + wl_sta = (struct cc33xx_station *)sta->drv_priv; + hlid = wl_sta->hlid; + } else { + ret = -EINVAL; + goto out; + } + + if (hlid == CC33XX_INVALID_LINK_ID) { + ret = 0; + goto out; + } + + if (WARN_ON(hlid >= CC33XX_MAX_LINKS)) { + ret = -EINVAL; + goto out; + } + + ba_bitmap = &cc->links[hlid].ba_bitmap; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d", + tid, action); + + switch (action) { + case IEEE80211_AMPDU_RX_START: + if (!wlvif->ba_support || !wlvif->ba_allowed) { + ret = -EOPNOTSUPP; + break; + } + + if (cc->ba_rx_session_count >= CC33XX_RX_BA_MAX_SESSIONS) { + ret = -EBUSY; + cc33xx_error("exceeded max RX BA sessions"); + break; + } + + if (*ba_bitmap & BIT(tid)) { + ret = -EINVAL; + cc33xx_error("cannot enable RX BA session on active tid: %d", + tid); + break; + } + + ret = cc33xx_acx_set_ba_receiver_session(cc, tid, *ssn, + true, hlid, + params->buf_size); + + if (!ret) { + *ba_bitmap |= BIT(tid); + cc->ba_rx_session_count++; + } + break; + + case IEEE80211_AMPDU_RX_STOP: + if (!(*ba_bitmap & BIT(tid))) { + /* this happens on reconfig - so only output a debug + * message for now, and don't fail the function. + */ + cc33xx_debug(DEBUG_MAC80211, + "no active RX BA session on tid: %d", tid); + ret = 0; + break; + } + + ret = cc33xx_acx_set_ba_receiver_session(cc, tid, 0, + false, hlid, 0); + if (!ret) { + *ba_bitmap &= ~BIT(tid); + cc->ba_rx_session_count--; + } + break; + + /* The BA initiator session management in FW independently. + * Falling break here on purpose for all TX APDU commands. + */ + case IEEE80211_AMPDU_TX_START: + case IEEE80211_AMPDU_TX_STOP_CONT: + case IEEE80211_AMPDU_TX_STOP_FLUSH: + case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: + case IEEE80211_AMPDU_TX_OPERATIONAL: + ret = -EINVAL; + break; + + default: + cc33xx_error("Incorrect ampdu action id=%x\n", action); + ret = -EINVAL; + } + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static int cc33xx_set_bitrate_mask(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const struct cfg80211_bitrate_mask *mask) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct cc33xx *cc = hw->priv; + int ret = 0; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 set_bitrate_mask 0x%x 0x%x", + mask->control[NL80211_BAND_2GHZ].legacy, + mask->control[NL80211_BAND_5GHZ].legacy); + + mutex_lock(&cc->mutex); + + wlvif->bitrate_masks[0] = cc33xx_tx_enabled_rates_get(cc, + mask->control[0].legacy, 0); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + if (wlvif->bss_type == BSS_TYPE_STA_BSS && + !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) { + cc33xx_set_band_rate(cc, wlvif); + wlvif->basic_rate = cc33xx_tx_min_rate_get(cc, + wlvif->basic_rate_set); + } +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static void cc33xx_op_channel_switch(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *ch_switch) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + int ret; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 channel switch"); + + cc33xx_tx_flush(cc); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state == CC33XX_STATE_OFF)) { + if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) + ieee80211_chswitch_done(vif, false, 0); + goto out; + } else if (unlikely(cc->state != CC33XX_STATE_ON)) { + goto out; + } + + /* TODO: change mac80211 to pass vif as param */ + + if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) { + unsigned long delay_usec; + + ret = cmd_channel_switch(cc, wlvif, ch_switch); + if (ret) + goto out; + + set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags); + + /* indicate failure 5 seconds after channel switch time */ + delay_usec = ieee80211_tu_to_usec(wlvif->beacon_int) * + ch_switch->count; + ieee80211_queue_delayed_work(hw, &wlvif->channel_switch_work, + usecs_to_jiffies(delay_usec) + + msecs_to_jiffies(5000)); + } + +out: + mutex_unlock(&cc->mutex); +} + +static inline void cc33xx_op_channel_switch_beacon(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_chan_def *chandef) +{ + cc33xx_error("AP channel switch is not supported"); +} + +static inline void cc33xx_op_flush(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + u32 queues, bool drop) +{ + cc33xx_tx_flush(hw->priv); +} + +static int cc33xx_op_remain_on_channel(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel *chan, + int duration, + enum ieee80211_roc_type type) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + struct cc33xx *cc = hw->priv; + int channel, active_roc, ret = 0; + + channel = ieee80211_frequency_to_channel(chan->center_freq); + + cc33xx_debug(DEBUG_MAC80211, + "mac80211 roc %d (role %d)", channel, wlvif->role_id); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* return EBUSY if we can't ROC right now */ + active_roc = find_first_bit(cc->roc_map, CC33XX_MAX_ROLES); + if (cc->roc_vif || active_roc < CC33XX_MAX_ROLES) { + cc33xx_warning("active roc on role %d", active_roc); + ret = -EBUSY; + goto out; + } + + cc33xx_debug(DEBUG_MAC80211, + "call cc33xx_start_dev, band = %d, channel = %d", + chan->band, channel); + ret = cc33xx_start_dev(cc, wlvif, chan->band, channel); + if (ret < 0) + goto out; + + cc->roc_vif = vif; + ieee80211_queue_delayed_work(hw, &cc->roc_complete_work, + msecs_to_jiffies(duration)); + +out: + mutex_unlock(&cc->mutex); + return ret; +} + +static int __cc33xx_roc_completed(struct cc33xx *cc) +{ + struct cc33xx_vif *wlvif; + int ret; + + /* already completed */ + if (unlikely(!cc->roc_vif)) + return 0; + + wlvif = cc33xx_vif_to_data(cc->roc_vif); + + if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) + return -EBUSY; + + ret = cc33xx_stop_dev(cc, wlvif); + if (ret < 0) + return ret; + + cc->roc_vif = NULL; + + return 0; +} + +static int cc33xx_roc_completed(struct cc33xx *cc) +{ + int ret; + + cc33xx_debug(DEBUG_MAC80211, "roc complete"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) { + ret = -EBUSY; + goto out; + } + + ret = __cc33xx_roc_completed(cc); + +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +static void cc33xx_roc_complete_work(struct work_struct *work) +{ + struct delayed_work *dwork; + struct cc33xx *cc; + int ret; + + dwork = to_delayed_work(work); + cc = container_of(dwork, struct cc33xx, roc_complete_work); + + ret = cc33xx_roc_completed(cc); + if (!ret) + ieee80211_remain_on_channel_expired(cc->hw); +} + +static int cc33xx_op_cancel_remain_on_channel(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct cc33xx *cc = hw->priv; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 croc"); + + cc33xx_tx_flush(cc); + + /* we can't just flush_work here, because it might deadlock + * (as we might get called from the same workqueue) + */ + cancel_delayed_work_sync(&cc->roc_complete_work); + cc33xx_roc_completed(cc); + + return 0; +} + +static void cc33xx_op_sta_rc_update(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + u32 changed) +{ + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + + cc33xx_debug(DEBUG_MAC80211, "mac80211 sta_rc_update"); + + if (!(changed & IEEE80211_RC_BW_CHANGED)) + return; + + /* this callback is atomic, so schedule a new work */ + wlvif->rc_update_bw = sta->deflink.bandwidth; + memcpy(&wlvif->rc_ht_cap, &sta->deflink.ht_cap, sizeof(sta->deflink.ht_cap)); + ieee80211_queue_work(hw, &wlvif->rc_update_work); +} + +static void cc33xx_op_sta_statistics(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct station_info *sinfo) +{ + struct cc33xx *cc = hw->priv; + struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif); + s8 rssi_dbm; + int ret; + + cc33xx_debug(DEBUG_MAC80211, "mac80211 get_rssi"); + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + ret = cc33xx_acx_average_rssi(cc, wlvif, &rssi_dbm); + if (ret < 0) + goto out; + + sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL); + sinfo->signal = rssi_dbm; + + ret = cc33xx_acx_get_tx_rate(cc, wlvif, sinfo); + if (ret < 0) + goto out; + +out: + mutex_unlock(&cc->mutex); +} + +static u32 cc33xx_op_get_expected_throughput(struct ieee80211_hw *hw, + struct ieee80211_sta *sta) +{ + struct cc33xx_station *wl_sta = (struct cc33xx_station *)sta->drv_priv; + struct cc33xx *cc = hw->priv; + u8 hlid = wl_sta->hlid; + + /* return in units of Kbps */ + return (cc->links[hlid].fw_rate_mbps * 1000); +} + +static bool cc33xx_tx_frames_pending(struct ieee80211_hw *hw) +{ + struct cc33xx *cc = hw->priv; + bool ret = false; + + mutex_lock(&cc->mutex); + + if (unlikely(cc->state != CC33XX_STATE_ON)) + goto out; + + /* packets are considered pending if in the TX queue or the FW */ + ret = (cc33xx_tx_total_queue_count(cc) > 0) || (cc->tx_frames_cnt > 0); +out: + mutex_unlock(&cc->mutex); + + return ret; +} + +#ifdef CONFIG_PM +static const struct ieee80211_ops cc33xx_ops = { + .start = cc33xx_op_start, + .stop = cc33xx_op_stop, + .add_interface = cc33xx_op_add_interface, + .remove_interface = cc33xx_op_remove_interface, + .change_interface = cc33xx_op_change_interface, + .suspend = cc33xx_op_suspend, + .resume = cc33xx_op_resume, + .config = cc33xx_op_config, + .prepare_multicast = cc33xx_op_prepare_multicast, + .configure_filter = cc33xx_op_configure_filter, + .tx = cc33xx_op_tx, + .wake_tx_queue = ieee80211_handle_wake_tx_queue, + .set_key = cc33xx_op_set_key, + .hw_scan = cc33xx_op_hw_scan, + .cancel_hw_scan = cc33xx_op_cancel_hw_scan, + .sched_scan_start = cc33xx_op_sched_scan_start, + .sched_scan_stop = cc33xx_op_sched_scan_stop, + .bss_info_changed = cc33xx_op_bss_info_changed, + .set_frag_threshold = cc33xx_op_set_frag_threshold, + .set_rts_threshold = cc33xx_op_set_rts_threshold, + .conf_tx = cc33xx_op_conf_tx, + .get_tsf = cc33xx_op_get_tsf, + .get_survey = cc33xx_op_get_survey, + .sta_state = cc33xx_op_sta_state, + .ampdu_action = cc33xx_op_ampdu_action, + .tx_frames_pending = cc33xx_tx_frames_pending, + .set_bitrate_mask = cc33xx_set_bitrate_mask, + .set_default_unicast_key = cc33xx_op_set_default_key_idx, + .channel_switch = cc33xx_op_channel_switch, + .channel_switch_beacon = cc33xx_op_channel_switch_beacon, + .flush = cc33xx_op_flush, + .remain_on_channel = cc33xx_op_remain_on_channel, + .cancel_remain_on_channel = cc33xx_op_cancel_remain_on_channel, + .add_chanctx = cc33xx_op_add_chanctx, + .remove_chanctx = cc33xx_op_remove_chanctx, + .change_chanctx = cc33xx_op_change_chanctx, + .assign_vif_chanctx = cc33xx_op_assign_vif_chanctx, + .unassign_vif_chanctx = cc33xx_op_unassign_vif_chanctx, + .switch_vif_chanctx = cc33xx_op_switch_vif_chanctx, + .sta_rc_update = cc33xx_op_sta_rc_update, + .sta_statistics = cc33xx_op_sta_statistics, + .get_expected_throughput = cc33xx_op_get_expected_throughput, + CFG80211_TESTMODE_CMD(cc33xx_tm_cmd) +}; + +static const struct wiphy_wowlan_support cc33xx_wowlan_support = { + .flags = WIPHY_WOWLAN_ANY, + .n_patterns = CC33XX_MAX_RX_FILTERS, + .pattern_min_len = 1, + .pattern_max_len = CC33XX_RX_FILTER_MAX_PATTERN_SIZE, +}; + +static void setup_wake_irq(struct cc33xx *cc) +{ + struct platform_device *pdev = cc->pdev; + struct cc33xx_platdev_data *pdev_data = dev_get_platdata(&pdev->dev); + + struct resource *res; + int ret; + + device_init_wakeup(cc->dev, true); + + if (pdev_data->pwr_in_suspend) + cc->hw->wiphy->wowlan = &cc33xx_wowlan_support; + + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); + if (res) { + cc->wakeirq = res->start; + ret = dev_pm_set_dedicated_wake_irq(cc->dev, cc->wakeirq); + if (ret) + cc->wakeirq = -ENODEV; + } else { + cc->wakeirq = -ENODEV; + } + + cc->keep_device_power = true; +} +#else +static const struct ieee80211_ops cc33xx_ops = { + .start = cc33xx_op_start, + .stop = cc33xx_op_stop, + .add_interface = cc33xx_op_add_interface, + .remove_interface = cc33xx_op_remove_interface, + .change_interface = cc33xx_op_change_interface, + .config = cc33xx_op_config, + .prepare_multicast = cc33xx_op_prepare_multicast, + .configure_filter = cc33xx_op_configure_filter, + .tx = cc33xx_op_tx, + .wake_tx_queue = ieee80211_handle_wake_tx_queue, + .set_key = cc33xx_op_set_key, + .hw_scan = cc33xx_op_hw_scan, + .cancel_hw_scan = cc33xx_op_cancel_hw_scan, + .sched_scan_start = cc33xx_op_sched_scan_start, + .sched_scan_stop = cc33xx_op_sched_scan_stop, + .bss_info_changed = cc33xx_op_bss_info_changed, + .set_frag_threshold = cc33xx_op_set_frag_threshold, + .set_rts_threshold = cc33xx_op_set_rts_threshold, + .conf_tx = cc33xx_op_conf_tx, + .get_tsf = cc33xx_op_get_tsf, + .get_survey = cc33xx_op_get_survey, + .sta_state = cc33xx_op_sta_state, + .ampdu_action = cc33xx_op_ampdu_action, + .tx_frames_pending = cc33xx_tx_frames_pending, + .set_bitrate_mask = cc33xx_set_bitrate_mask, + .set_default_unicast_key = cc33xx_op_set_default_key_idx, + .channel_switch = cc33xx_op_channel_switch, + .channel_switch_beacon = cc33xx_op_channel_switch_beacon, + .flush = cc33xx_op_flush, + .remain_on_channel = cc33xx_op_remain_on_channel, + .cancel_remain_on_channel = cc33xx_op_cancel_remain_on_channel, + .add_chanctx = cc33xx_op_add_chanctx, + .remove_chanctx = cc33xx_op_remove_chanctx, + .change_chanctx = cc33xx_op_change_chanctx, + .assign_vif_chanctx = cc33xx_op_assign_vif_chanctx, + .unassign_vif_chanctx = cc33xx_op_unassign_vif_chanctx, + .switch_vif_chanctx = cc33xx_op_switch_vif_chanctx, + .sta_rc_update = cc33xx_op_sta_rc_update, + .sta_statistics = cc33xx_op_sta_statistics, + .get_expected_throughput = cc33xx_op_get_expected_throughput, + CFG80211_TESTMODE_CMD(cc33xx_tm_cmd) +}; + +static inline void setup_wake_irq(struct cc33xx *cc) +{ + cc->keep_device_power = true; +} +#endif /* CONFIG_PM */ + +u8 cc33xx_rate_to_idx(struct cc33xx *cc, u8 rate, enum nl80211_band band) +{ + u8 idx; + + if (WARN_ON(band >= 2)) + return 0; + + if (unlikely(rate > CONF_HW_RATE_INDEX_MAX)) { + cc33xx_error("Illegal RX rate from HW: %d", rate); + return 0; + } + + idx = cc33xx_band_rate_to_idx[band][rate]; + if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) { + cc33xx_error("Unsupported RX rate from HW: %d", rate); + return 0; + } + + return idx; +} + +static void cc33xx_derive_mac_addresses(struct cc33xx *cc) +{ + const u8 zero_mac[ETH_ALEN] = {0}; + u8 base_addr[ETH_ALEN]; + u8 bd_addr[ETH_ALEN]; + bool use_nvs = false; + bool use_efuse = false; + bool use_random = false; + + if (cc->nvs_mac_addr_len != ETH_ALEN) { + if (unlikely(cc->nvs_mac_addr_len > 0)) + cc33xx_warning("NVS MAC address present but has a wrong size, ignoring."); + + if (!ether_addr_equal(zero_mac, cc->efuse_mac_address)) { + use_efuse = true; + ether_addr_copy(base_addr, cc->efuse_mac_address); + cc33xx_debug(DEBUG_BOOT, + "MAC address derived from EFUSE"); + } else { + use_random = true; + eth_random_addr(base_addr); + cc33xx_warning("No EFUSE / NVS data, using random locally administered address."); + } + } else { + u8 *nvs_addr = cc->nvs_mac_addr; + const u8 efuse_magic_addr[ETH_ALEN] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + const u8 random_magic_addr[ETH_ALEN] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}; + + /* In NVS, addresses 00-00-00-00-00-00 and 00-00-00-00-00-01 + * have special meaning: + */ + + if (ether_addr_equal(nvs_addr, efuse_magic_addr)) { + use_efuse = true; + ether_addr_copy(base_addr, cc->efuse_mac_address); + cc33xx_debug(DEBUG_BOOT, + "NVS file selects address from EFUSE"); + } else if (ether_addr_equal(nvs_addr, random_magic_addr)) { + use_random = true; + eth_random_addr(base_addr); + cc33xx_debug(DEBUG_BOOT, + "NVS file sets random MAC address"); + } else { + use_nvs = true; + ether_addr_copy(base_addr, nvs_addr); + cc33xx_debug(DEBUG_BOOT, + "NVS file sets explicit MAC address"); + } + } + + if (use_nvs || use_efuse) { + u8 oui_laa_bit = BIT(1); + u8 oui_multicast_bit = BIT(0); + + base_addr[0] &= ~oui_multicast_bit; + + ether_addr_copy(cc->addresses[0].addr, base_addr); + ether_addr_copy(cc->addresses[1].addr, base_addr); + ether_addr_copy(cc->addresses[2].addr, base_addr); + ether_addr_copy(bd_addr, base_addr); + + cc->addresses[1].addr[0] |= oui_laa_bit; + cc->addresses[2].addr[0] |= oui_laa_bit; + + eth_addr_inc(cc->addresses[2].addr); + eth_addr_inc(bd_addr); + } else if (use_random) { + ether_addr_copy(cc->addresses[0].addr, base_addr); + ether_addr_copy(cc->addresses[1].addr, base_addr); + ether_addr_copy(cc->addresses[2].addr, base_addr); + ether_addr_copy(bd_addr, base_addr); + + eth_addr_inc(bd_addr); + eth_addr_inc(cc->addresses[1].addr); + eth_addr_inc(cc->addresses[1].addr); + eth_addr_inc(cc->addresses[2].addr); + eth_addr_inc(cc->addresses[2].addr); + eth_addr_inc(cc->addresses[2].addr); + } else { + WARN_ON(1); + } + + cc33xx_debug(DEBUG_BOOT, "Base MAC address: %pM", + cc->addresses[0].addr); + + cc->hw->wiphy->n_addresses = CC33XX_NUM_MAC_ADDRESSES; + cc->hw->wiphy->addresses = cc->addresses; + + cmd_set_bd_addr(cc, bd_addr); +} + +static int cc33xx_register_hw(struct cc33xx *cc) +{ + int ret; + + if (cc->mac80211_registered) + return 0; + + cc33xx_derive_mac_addresses(cc); + + ret = ieee80211_register_hw(cc->hw); + if (ret < 0) { + cc33xx_error("unable to register mac80211 hw: %d", ret); + goto out; + } + + cc->mac80211_registered = true; + +out: + return ret; +} + +static void cc33xx_unregister_hw(struct cc33xx *cc) +{ + if (cc->plt) + cc33xx_plt_stop(cc); + + ieee80211_unregister_hw(cc->hw); + cc->mac80211_registered = false; +} + +static int cc33xx_init_ieee80211(struct cc33xx *cc) +{ + unsigned int i; + + if (cc->conf.core.mixed_mode_support) { + static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_CCMP, + WLAN_CIPHER_SUITE_AES_CMAC, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_GCMP, + WLAN_CIPHER_SUITE_GCMP_256, + WLAN_CIPHER_SUITE_BIP_GMAC_128, + WLAN_CIPHER_SUITE_BIP_GMAC_256, + }; + cc->hw->wiphy->cipher_suites = cipher_suites; + cc->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + + } else { + static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_CCMP, + WLAN_CIPHER_SUITE_AES_CMAC, + WLAN_CIPHER_SUITE_GCMP, + WLAN_CIPHER_SUITE_GCMP_256, + WLAN_CIPHER_SUITE_BIP_GMAC_128, + WLAN_CIPHER_SUITE_BIP_GMAC_256, + }; + cc->hw->wiphy->cipher_suites = cipher_suites; + cc->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + } + + /* The tx descriptor buffer */ + cc->hw->extra_tx_headroom = CC33XX_TX_EXTRA_HEADROOM; + + if (cc->quirks & CC33XX_QUIRK_TKIP_HEADER_SPACE) + cc->hw->extra_tx_headroom += CC33XX_EXTRA_SPACE_TKIP; + + /* unit us */ + /* FIXME: find a proper value */ + cc->hw->max_listen_interval = + cc->conf.host_conf.conn.max_listen_interval; + + ieee80211_hw_set(cc->hw, SUPPORT_FAST_XMIT); + ieee80211_hw_set(cc->hw, CHANCTX_STA_CSA); + ieee80211_hw_set(cc->hw, QUEUE_CONTROL); + ieee80211_hw_set(cc->hw, TX_AMPDU_SETUP_IN_HW); + ieee80211_hw_set(cc->hw, AMPDU_AGGREGATION); + ieee80211_hw_set(cc->hw, AP_LINK_PS); + ieee80211_hw_set(cc->hw, SPECTRUM_MGMT); + ieee80211_hw_set(cc->hw, REPORTS_TX_ACK_STATUS); + ieee80211_hw_set(cc->hw, CONNECTION_MONITOR); + ieee80211_hw_set(cc->hw, HAS_RATE_CONTROL); + ieee80211_hw_set(cc->hw, SUPPORTS_DYNAMIC_PS); + ieee80211_hw_set(cc->hw, SIGNAL_DBM); + ieee80211_hw_set(cc->hw, SUPPORTS_PS); + ieee80211_hw_set(cc->hw, SUPPORTS_TX_FRAG); + ieee80211_hw_set(cc->hw, SUPPORTS_MULTI_BSSID); + ieee80211_hw_set(cc->hw, SUPPORTS_AMSDU_IN_AMPDU); + + cc->hw->wiphy->interface_modes = cc33xx_wiphy_interface_modes(); + + cc->hw->wiphy->max_scan_ssids = 1; + cc->hw->wiphy->max_sched_scan_ssids = 16; + cc->hw->wiphy->max_match_sets = 16; + /* Maximum length of elements in scanning probe request templates + * should be the maximum length possible for a template, without + * the IEEE80211 header of the template + */ + cc->hw->wiphy->max_scan_ie_len = CC33XX_CMD_TEMPL_MAX_SIZE - + sizeof(struct ieee80211_header); + + cc->hw->wiphy->max_sched_scan_reqs = 1; + cc->hw->wiphy->max_sched_scan_ie_len = CC33XX_CMD_TEMPL_MAX_SIZE - + sizeof(struct ieee80211_header); + + cc->hw->wiphy->max_remain_on_channel_duration = 30000; + + cc->hw->wiphy->features |= NL80211_FEATURE_AP_SCAN; + + /* clear channel flags from the previous usage + * and restore max_power & max_antenna_gain values. + */ + for (i = 0; i < ARRAY_SIZE(cc33xx_channels); i++) { + cc33xx_band_2ghz.channels[i].flags = 0; + cc33xx_band_2ghz.channels[i].max_power = CC33XX_MAX_TXPWR; + cc33xx_band_2ghz.channels[i].max_antenna_gain = 0; + } + + for (i = 0; i < ARRAY_SIZE(cc33xx_channels_5ghz); i++) { + cc33xx_band_5ghz.channels[i].flags = 0; + cc33xx_band_5ghz.channels[i].max_power = CC33XX_MAX_TXPWR; + cc33xx_band_5ghz.channels[i].max_antenna_gain = 0; + } + + /* Enable/Disable He based on conf file params */ + if (!cc->conf.mac.he_enable) { + cc33xx_band_2ghz.iftype_data = NULL; + cc33xx_band_2ghz.n_iftype_data = 0; + + cc33xx_band_5ghz.iftype_data = NULL; + cc33xx_band_5ghz.n_iftype_data = 0; + } + + /* We keep local copies of the band structs because we need to + * modify them on a per-device basis. + */ + memcpy(&cc->bands[NL80211_BAND_2GHZ], &cc33xx_band_2ghz, + sizeof(cc33xx_band_2ghz)); + memcpy(&cc->bands[NL80211_BAND_2GHZ].ht_cap, + &cc->ht_cap[NL80211_BAND_2GHZ], + sizeof(*cc->ht_cap)); + + memcpy(&cc->bands[NL80211_BAND_5GHZ], &cc33xx_band_5ghz, + sizeof(cc33xx_band_5ghz)); + memcpy(&cc->bands[NL80211_BAND_5GHZ].ht_cap, + &cc->ht_cap[NL80211_BAND_5GHZ], + sizeof(*cc->ht_cap)); + + cc->hw->wiphy->bands[NL80211_BAND_2GHZ] = + &cc->bands[NL80211_BAND_2GHZ]; + + if (!cc->disable_5g && cc->conf.core.enable_5ghz) + cc->hw->wiphy->bands[NL80211_BAND_5GHZ] = + &cc->bands[NL80211_BAND_5GHZ]; + + /* allow 4 queues per mac address we support + + * 1 cab queue per mac + one global offchannel Tx queue + */ + cc->hw->queues = (NUM_TX_QUEUES + 1) * CC33XX_NUM_MAC_ADDRESSES + 1; + + /* the last queue is the offchannel queue */ + cc->hw->offchannel_tx_hw_queue = cc->hw->queues - 1; + cc->hw->max_rates = 1; + + /* allowed interface combinations */ + cc->hw->wiphy->iface_combinations = cc33xx_iface_combinations; + cc->hw->wiphy->n_iface_combinations = ARRAY_SIZE(cc33xx_iface_combinations); + + SET_IEEE80211_DEV(cc->hw, cc->dev); + + cc->hw->sta_data_size = sizeof(struct cc33xx_station); + cc->hw->vif_data_size = sizeof(struct cc33xx_vif); + + cc->hw->max_rx_aggregation_subframes = cc->conf.host_conf.ht.rx_ba_win_size; + + /* For all ps schemes don't use UAPSD, except for UAPSD scheme + * As these are the currently supportedd PS schemes, use the default + * legacy otherwise + */ + if (cc->conf.mac.ps_scheme == PS_SCHEME_UPSD_TRIGGER) { + cc->hw->uapsd_queues = IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK; + } else if ((cc->conf.mac.ps_scheme != PS_SCHEME_LEGACY) && + (cc->conf.mac.ps_scheme != PS_SCHEME_NOPSPOLL)) { + cc->hw->uapsd_queues = 0; + cc->conf.mac.ps_scheme = PS_SCHEME_LEGACY; + } else { + cc->hw->uapsd_queues = 0; + } + + return 0; +} + +#define create_high_prio_freezable_workqueue(name) \ + alloc_workqueue("%s", __WQ_LEGACY | WQ_FREEZABLE | WQ_UNBOUND | \ + WQ_MEM_RECLAIM | WQ_HIGHPRI, 1, (name)) + +static struct ieee80211_hw *cc33xx_alloc_hw(u32 aggr_buf_size) +{ + struct ieee80211_hw *hw; + struct cc33xx *cc; + int i, j; + unsigned int order; + + hw = ieee80211_alloc_hw(sizeof(*cc), &cc33xx_ops); + if (!hw) { + cc33xx_error("could not alloc ieee80211_hw"); + goto err_hw_alloc; + } + + cc = hw->priv; + memset(cc, 0, sizeof(*cc)); + + INIT_LIST_HEAD(&cc->wlvif_list); + + cc->hw = hw; + + /* cc->num_links is not configured yet, so just use CC33XX_MAX_LINKS. + * we don't allocate any additional resource here, so that's fine. + */ + for (i = 0; i < NUM_TX_QUEUES; i++) + for (j = 0; j < CC33XX_MAX_LINKS; j++) + skb_queue_head_init(&cc->links[j].tx_queue[i]); + + skb_queue_head_init(&cc->deferred_rx_queue); + skb_queue_head_init(&cc->deferred_tx_queue); + + init_llist_head(&cc->event_list); + + INIT_WORK(&cc->netstack_work, cc33xx_netstack_work); + INIT_WORK(&cc->tx_work, cc33xx_tx_work); + INIT_WORK(&cc->recovery_work, cc33xx_recovery_work); + INIT_WORK(&cc->irq_deferred_work, irq_deferred_work); + INIT_DELAYED_WORK(&cc->scan_complete_work, cc33xx_scan_complete_work); + INIT_DELAYED_WORK(&cc->roc_complete_work, cc33xx_roc_complete_work); + INIT_DELAYED_WORK(&cc->tx_watchdog_work, cc33xx_tx_watchdog_work); + + cc->freezable_netstack_wq = create_freezable_workqueue("cc33xx_netstack_wq"); + if (!cc->freezable_netstack_wq) + goto err_hw_alloc; + + cc->freezable_wq = create_high_prio_freezable_workqueue("cc33xx_wq"); + if (!cc->freezable_wq) + goto err_ns_wq; + + cc->rx_counter = 0; + cc->power_level = CC33XX_MAX_TXPWR; + cc->band = NL80211_BAND_2GHZ; + cc->flags = 0; + cc->sleep_auth = CC33XX_PSM_ILLEGAL; + + cc->ap_ps_map = 0; + cc->ap_fw_ps_map = 0; + cc->quirks = 0; + cc->active_sta_count = 0; + cc->active_link_count = 0; + cc->fwlog_size = 0; + + /* The system link is always allocated */ + __set_bit(CC33XX_SYSTEM_HLID, cc->links_map); + + memset(cc->tx_frames_map, 0, sizeof(cc->tx_frames_map)); + for (i = 0; i < CC33XX_NUM_TX_DESCRIPTORS; i++) + cc->tx_frames[i] = NULL; + + spin_lock_init(&cc->cc_lock); + + cc->state = CC33XX_STATE_OFF; + mutex_init(&cc->mutex); + mutex_init(&cc->flush_mutex); + init_completion(&cc->nvs_loading_complete); + + order = get_order(aggr_buf_size); + cc->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order); + if (!cc->aggr_buf) + goto err_all_wq; + + cc->aggr_buf_size = aggr_buf_size; + + cc->dummy_packet = cc33xx_alloc_dummy_packet(cc); + if (!cc->dummy_packet) + goto err_aggr; + + /* Allocate one page for the FW log */ + cc->fwlog = (u8 *)get_zeroed_page(GFP_KERNEL); + if (!cc->fwlog) + goto err_dummy_packet; + + cc->buffer_32 = kmalloc(sizeof(*cc->buffer_32), GFP_KERNEL); + if (!cc->buffer_32) + goto err_fwlog; + + cc->core_status = kzalloc(sizeof(*cc->core_status), GFP_KERNEL); + if (!cc->core_status) + goto err_buf32; + + return hw; + +err_buf32: + kfree(cc->buffer_32); + +err_fwlog: + free_page((unsigned long)cc->fwlog); + +err_dummy_packet: + dev_kfree_skb(cc->dummy_packet); + +err_aggr: + free_pages((unsigned long)cc->aggr_buf, order); + +err_all_wq: + destroy_workqueue(cc->freezable_wq); + +err_ns_wq: + destroy_workqueue(cc->freezable_netstack_wq); + +err_hw_alloc: + return NULL; +} + +static int cc33xx_free_hw(struct cc33xx *cc) +{ + /* Unblock any fwlog readers */ + mutex_lock(&cc->mutex); + cc->fwlog_size = -1; + mutex_unlock(&cc->mutex); + + kfree(cc->buffer_32); + kfree(cc->core_status); + free_page((unsigned long)cc->fwlog); + dev_kfree_skb(cc->dummy_packet); + free_pages((unsigned long)cc->aggr_buf, get_order(cc->aggr_buf_size)); + + kfree(cc->nvs_mac_addr); + cc->nvs_mac_addr = NULL; + + destroy_workqueue(cc->freezable_wq); + destroy_workqueue(cc->freezable_netstack_wq); + flush_deferred_event_list(cc); + + ieee80211_free_hw(cc->hw); + + return 0; +} + +static int cc33xx_identify_chip(struct cc33xx *cc) +{ + int ret = 0; + + cc->quirks |= CC33XX_QUIRK_RX_BLOCKSIZE_ALIGN | + CC33XX_QUIRK_TX_BLOCKSIZE_ALIGN | + CC33XX_QUIRK_NO_SCHED_SCAN_WHILE_CONN | + CC33XX_QUIRK_TX_PAD_LAST_FRAME | + CC33XX_QUIRK_DUAL_PROBE_TMPL; + + if (cc->if_ops->get_max_transaction_len) + cc->max_transaction_len = + cc->if_ops->get_max_transaction_len(cc->dev); + else + cc->max_transaction_len = 0; + + return ret; +} + +static int read_version_info(struct cc33xx *cc) +{ + int ret; + + ret = cc33xx_acx_init_get_fw_versions(cc); + if (ret < 0) { + cc33xx_error("Get FW version FAILED!"); + return ret; + } + + cc33xx_debug(DEBUG_BOOT, "Wireless firmware version %u.%u.%u.%u", + cc->fw_ver->major_version, + cc->fw_ver->minor_version, + cc->fw_ver->api_version, + cc->fw_ver->build_version); + + cc33xx_debug(DEBUG_BOOT, "Wireless PHY version %u.%u.%u.%u.%u.%u", + cc->fw_ver->phy_version[5], + cc->fw_ver->phy_version[4], + cc->fw_ver->phy_version[3], + cc->fw_ver->phy_version[2], + cc->fw_ver->phy_version[1], + cc->fw_ver->phy_version[0]); + + return 0; +} + +static void cc33xx_nvs_cb(const struct firmware *fw, void *context) +{ + struct cc33xx *cc = context; + struct platform_device *pdev = cc->pdev; + struct cc33xx_platdev_data *pdev_data = dev_get_platdata(&pdev->dev); + + int ret; + + if (fw) { + cc->nvs_mac_addr = kmemdup(fw->data, fw->size, GFP_KERNEL); + if (!cc->nvs_mac_addr) { + cc33xx_error("Could not allocate nvs data"); + goto out; + } + cc->nvs_mac_addr_len = fw->size; + } else if (pdev_data->family->nvs_name) { + cc33xx_debug(DEBUG_BOOT, "Could not get nvs file %s", + pdev_data->family->nvs_name); + cc->nvs_mac_addr = NULL; + cc->nvs_mac_addr_len = 0; + } else { + cc->nvs_mac_addr = NULL; + cc->nvs_mac_addr_len = 0; + } + + ret = cc33xx_setup(cc); + if (ret < 0) + goto out_free_nvs; + + BUILD_BUG_ON(CC33XX_NUM_TX_DESCRIPTORS > CC33XX_MAX_TX_DESCRIPTORS); + + /* adjust some runtime configuration parameters */ + cc33xx_adjust_conf(cc); + + cc->if_ops = pdev_data->if_ops; + cc->if_ops->set_irq_handler(cc->dev, irq_wrapper); + + cc33xx_power_off(cc); + + setup_wake_irq(cc); + + ret = cc33xx_init_fw(cc); + if (ret < 0) { + cc33xx_error("FW download failed"); + cc33xx_power_off(cc); + goto out_irq; + } + + ret = cc33xx_identify_chip(cc); + if (ret < 0) + goto out_irq; + + ret = read_version_info(cc); + if (ret < 0) + goto out_irq; + + ret = cc33xx_init_ieee80211(cc); + if (ret) + goto out_irq; + + ret = cc33xx_register_hw(cc); + if (ret) + goto out_irq; + + cc->initialized = true; + goto out; + +out_irq: + if (cc->wakeirq >= 0) + dev_pm_clear_wake_irq(cc->dev); + device_init_wakeup(cc->dev, false); + +out_free_nvs: + kfree(cc->nvs_mac_addr); + +out: + release_firmware(fw); + complete_all(&cc->nvs_loading_complete); + cc33xx_debug(DEBUG_CC33xx, "%s complete", __func__); +} + +static int cc33xx_load_ini_bin_file(struct device *dev, + struct cc33xx_conf_file *conf, + const char *file) +{ + struct cc33xx_conf_file *conf_file; + const struct firmware *fw; + int ret; + + ret = request_firmware(&fw, file, dev); + if (ret < 0) { + cc33xx_error("could not get configuration binary %s: %d", + file, ret); + return ret; + } + + if (fw->size != CC33X_CONF_SIZE) { + cc33xx_error("%s configuration binary size is wrong, expected %zu got %zu", + file, CC33X_CONF_SIZE, + fw->size); + ret = -EINVAL; + goto out_release; + } + + conf_file = (struct cc33xx_conf_file *)fw->data; + + if (conf_file->header.magic != cpu_to_le32(CC33XX_CONF_MAGIC)) { + cc33xx_error("conf file magic number mismatch, expected 0x%0x got 0x%0x", + CC33XX_CONF_MAGIC, conf_file->header.magic); + ret = -EINVAL; + goto out_release; + } + + memcpy(conf, conf_file, sizeof(*conf)); + +out_release: + release_firmware(fw); + return ret; +} + +static int cc33xx_ini_bin_init(struct cc33xx *cc, struct device *dev) +{ + struct platform_device *pdev = cc->pdev; + struct cc33xx_platdev_data *pdata = dev_get_platdata(&pdev->dev); + + if (cc33xx_load_ini_bin_file(dev, &cc->conf, + pdata->family->cfg_name) < 0) + cc33xx_warning("falling back to default config"); + + return 0; +} + +static inline void cc33xx_set_ht_cap(struct cc33xx *cc, enum nl80211_band band, + struct ieee80211_sta_ht_cap *ht_cap) +{ + memcpy(&cc->ht_cap[band], ht_cap, sizeof(*ht_cap)); +} + +static int cc33xx_setup(struct cc33xx *cc) +{ + int ret; + + BUILD_BUG_ON(CC33XX_MAX_AP_STATIONS > CC33XX_MAX_LINKS); + + ret = cc33xx_ini_bin_init(cc, cc->dev); + if (ret < 0) + return ret; + + if (cc->conf.host_conf.ht.mode == HT_MODE_DEFAULT) { + cc33xx_set_ht_cap(cc, NL80211_BAND_2GHZ, + &cc33xx_siso40_ht_cap_2ghz); + + /* 5Ghz is always wide */ + cc33xx_set_ht_cap(cc, NL80211_BAND_5GHZ, + &cc33xx_siso40_ht_cap_5ghz); + } else if (cc->conf.host_conf.ht.mode == HT_MODE_WIDE) { + cc33xx_set_ht_cap(cc, NL80211_BAND_2GHZ, + &cc33xx_siso40_ht_cap_2ghz); + cc33xx_set_ht_cap(cc, NL80211_BAND_5GHZ, + &cc33xx_siso40_ht_cap_5ghz); + } else if (cc->conf.host_conf.ht.mode == HT_MODE_SISO20) { + cc33xx_set_ht_cap(cc, NL80211_BAND_2GHZ, &cc33xx_siso20_ht_cap); + cc33xx_set_ht_cap(cc, NL80211_BAND_5GHZ, &cc33xx_siso20_ht_cap); + } + + cc->event_mask = BSS_LOSS_EVENT_ID | SCAN_COMPLETE_EVENT_ID | + RADAR_DETECTED_EVENT_ID | RSSI_SNR_TRIGGER_0_EVENT_ID | + PERIODIC_SCAN_COMPLETE_EVENT_ID | + PERIODIC_SCAN_REPORT_EVENT_ID | DUMMY_PACKET_EVENT_ID | + PEER_REMOVE_COMPLETE_EVENT_ID | + BA_SESSION_RX_CONSTRAINT_EVENT_ID | + REMAIN_ON_CHANNEL_COMPLETE_EVENT_ID | + CHANNEL_SWITCH_COMPLETE_EVENT_ID | + DFS_CHANNELS_CONFIG_COMPLETE_EVENT | + SMART_CONFIG_SYNC_EVENT_ID | INACTIVE_STA_EVENT_ID | + SMART_CONFIG_DECODE_EVENT_ID | TIME_SYNC_EVENT_ID | + FW_LOGGER_INDICATION | RX_BA_WIN_SIZE_CHANGE_EVENT_ID; + + cc->ap_event_mask = MAX_TX_FAILURE_EVENT_ID; + + return 0; +} + +static int cc33xx_probe(struct platform_device *pdev) +{ + struct cc33xx *cc; + struct ieee80211_hw *hw; + struct cc33xx_platdev_data *pdev_data = dev_get_platdata(&pdev->dev); + const char *nvs_name; + int ret; + + if (!pdev_data) { + cc33xx_error("can't access platform data"); + return -EINVAL; + } + + hw = cc33xx_alloc_hw(CC33XX_AGGR_BUFFER_SIZE); + if (!hw) { + ret = -ENOMEM; + goto out; + } + cc = hw->priv; + cc->dev = &pdev->dev; + cc->pdev = pdev; + platform_set_drvdata(pdev, cc); + + if (pdev_data->family && pdev_data->family->nvs_name) { + nvs_name = pdev_data->family->nvs_name; + ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, + nvs_name, &pdev->dev, GFP_KERNEL, + cc, cc33xx_nvs_cb); + if (ret < 0) { + cc33xx_error("request_firmware_nowait failed for %s: %d", + nvs_name, ret); + complete_all(&cc->nvs_loading_complete); + } + } else { + cc33xx_nvs_cb(NULL, cc); + cc33xx_error("Invalid platform data entry"); + ret = -EINVAL; + } + +out: + return ret; +} + +static int cc33xx_remove(struct platform_device *pdev) +{ + struct cc33xx_platdev_data *pdev_data = dev_get_platdata(&pdev->dev); + struct cc33xx *cc = platform_get_drvdata(pdev); + + set_bit(CC33XX_FLAG_DRIVER_REMOVED, &cc->flags); + + cc->dev->driver->pm = NULL; + + if (pdev_data->family && pdev_data->family->nvs_name) + wait_for_completion(&cc->nvs_loading_complete); + + if (!cc->initialized) + goto out; + + if (cc->wakeirq >= 0) { + dev_pm_clear_wake_irq(cc->dev); + cc->wakeirq = -ENODEV; + } + + device_init_wakeup(cc->dev, false); + cc33xx_unregister_hw(cc); + cc33xx_turn_off(cc); + +out: + cc33xx_free_hw(cc); + return 0; +} + +static const struct platform_device_id cc33xx_id_table[] = { + { "cc33xx", 0 }, + { } +}; +MODULE_DEVICE_TABLE(platform, cc33xx_id_table); + +static struct platform_driver cc33xx_driver = { + .probe = cc33xx_probe, + .remove = cc33xx_remove, + .id_table = cc33xx_id_table, + .driver = { + .name = "cc33xx_driver", + } +}; + +module_platform_driver(cc33xx_driver); + +module_param_named(debug_level, cc33xx_debug_level, uint, 0600); +MODULE_PARM_DESC(debug_level, "cc33xx debugging level"); + +module_param(no_recovery, int, 0600); +MODULE_PARM_DESC(no_recovery, "Prevent HW recovery. FW will remain stuck."); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Texas Instruments CC33xx WLAN driver"); +MODULE_AUTHOR("Michael Nemanov <michael.nemanov@xxxxxx>"); +MODULE_AUTHOR("Sabeeh Khan <sabeeh-khan@xxxxxx>"); + +MODULE_FIRMWARE(SECOND_LOADER_NAME); +MODULE_FIRMWARE(FW_NAME); -- 2.25.1
