| /* |
| * Copyright (c) 2018-2019 Nordic Semiconductor ASA |
| * Copyright 2019 NXP |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/types.h> |
| #include <zephyr/toolchain.h> |
| #include <zephyr/bluetooth/hci.h> |
| #include <zephyr/sys/byteorder.h> |
| |
| #include "hal/ccm.h" |
| #include "hal/radio.h" |
| #include "hal/ticker.h" |
| |
| #include "util/util.h" |
| #include "util/memq.h" |
| #include "util/mayfly.h" |
| |
| #include "ticker/ticker.h" |
| |
| #include "pdu.h" |
| |
| #include "lll.h" |
| #include "lll_vendor.h" |
| #include "lll_clock.h" |
| #include "lll_scan.h" |
| #include "lll_df_types.h" |
| #include "lll_conn.h" |
| #include "lll_chan.h" |
| #include "lll_filter.h" |
| |
| #include "lll_internal.h" |
| #include "lll_tim_internal.h" |
| #include "lll_prof_internal.h" |
| |
| #define LOG_MODULE_NAME bt_ctlr_llsw_openisa_lll_scan |
| #include "common/log.h" |
| #include <soc.h> |
| #include "hal/debug.h" |
| |
| static int init_reset(void); |
| static int prepare_cb(struct lll_prepare_param *prepare_param); |
| static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb); |
| static void abort_cb(struct lll_prepare_param *prepare_param, void *param); |
| static void ticker_stop_cb(uint32_t ticks_at_expire, uint32_t ticks_drift, |
| uint32_t remainder, uint16_t lazy, uint8_t force, |
| void *param); |
| static void ticker_op_start_cb(uint32_t status, void *param); |
| static void isr_rx(void *param); |
| static void isr_tx(void *param); |
| static void isr_done(void *param); |
| static void isr_window(void *param); |
| static void isr_abort(void *param); |
| static void isr_cleanup(void *param); |
| static void isr_race(void *param); |
| |
| static inline bool isr_rx_scan_check(struct lll_scan *lll, uint8_t irkmatch_ok, |
| uint8_t devmatch_ok, uint8_t rl_idx); |
| static inline uint32_t isr_rx_pdu(struct lll_scan *lll, uint8_t devmatch_ok, |
| uint8_t devmatch_id, uint8_t irkmatch_ok, |
| uint8_t irkmatch_id, uint8_t rl_idx, uint8_t rssi_ready); |
| #if defined(CONFIG_BT_CENTRAL) |
| static inline bool isr_scan_init_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, uint8_t rl_idx); |
| static inline bool isr_scan_init_adva_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, uint8_t rl_idx); |
| #endif /* CONFIG_BT_CENTRAL */ |
| static inline bool isr_scan_tgta_check(struct lll_scan *lll, bool init, |
| struct pdu_adv *pdu, uint8_t rl_idx, |
| bool *dir_report); |
| static inline bool isr_scan_tgta_rpa_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, |
| bool *dir_report); |
| static inline bool isr_scan_rsp_adva_matches(struct pdu_adv *srsp); |
| static uint32_t isr_rx_scan_report(struct lll_scan *lll, uint8_t rssi_ready, |
| uint8_t rl_idx, bool dir_report); |
| |
| |
| int lll_scan_init(void) |
| { |
| int err; |
| |
| err = init_reset(); |
| if (err) { |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| int lll_scan_reset(void) |
| { |
| int err; |
| |
| err = init_reset(); |
| if (err) { |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| void lll_scan_prepare(void *param) |
| { |
| struct lll_prepare_param *p = param; |
| int err; |
| |
| err = lll_clk_on(); |
| LL_ASSERT(!err || err == -EINPROGRESS); |
| |
| err = lll_prepare(is_abort_cb, abort_cb, prepare_cb, 0, p); |
| LL_ASSERT(!err || err == -EINPROGRESS); |
| } |
| |
| static int init_reset(void) |
| { |
| return 0; |
| } |
| |
| static int prepare_cb(struct lll_prepare_param *prepare_param) |
| { |
| struct lll_scan *lll = prepare_param->param; |
| uint32_t aa = sys_cpu_to_le32(PDU_AC_ACCESS_ADDR); |
| uint32_t ticks_at_event, ticks_at_start; |
| struct node_rx_pdu *node_rx; |
| uint32_t remainder_us; |
| struct ull_hdr *ull; |
| uint32_t remainder; |
| |
| DEBUG_RADIO_START_O(1); |
| |
| #if defined(CONFIG_BT_CENTRAL) |
| /* Check if stopped (on connection establishment race between LLL and |
| * ULL. |
| */ |
| if (unlikely(lll->conn && lll->conn->central.initiated)) { |
| int err; |
| |
| err = lll_clk_off(); |
| LL_ASSERT(!err || err == -EBUSY); |
| |
| lll_done(NULL); |
| |
| DEBUG_RADIO_START_O(0); |
| return 0; |
| } |
| #endif /* CONFIG_BT_CENTRAL */ |
| |
| radio_reset(); |
| /* TODO: other Tx Power settings */ |
| radio_tx_power_set(RADIO_TXP_DEFAULT); |
| |
| #if defined(CONFIG_BT_CTLR_ADV_EXT) |
| /* TODO: if coded we use S8? */ |
| radio_phy_set(lll->phy, 1); |
| radio_pkt_configure(8, PDU_AC_LEG_PAYLOAD_SIZE_MAX, (lll->phy << 1)); |
| #else /* !CONFIG_BT_CTLR_ADV_EXT */ |
| radio_phy_set(0, 0); |
| radio_pkt_configure(8, PDU_AC_LEG_PAYLOAD_SIZE_MAX, 0); |
| #endif /* !CONFIG_BT_CTLR_ADV_EXT */ |
| |
| node_rx = ull_pdu_rx_alloc_peek(1); |
| LL_ASSERT(node_rx); |
| radio_pkt_rx_set(node_rx->pdu); |
| |
| radio_aa_set((uint8_t *)&aa); |
| radio_crc_configure(((0x5bUL) | ((0x06UL) << 8) | ((0x00UL) << 16)), |
| 0x555555); |
| |
| lll_chan_set(37 + lll->chan); |
| |
| radio_isr_set(isr_rx, lll); |
| |
| /* setup tIFS switching */ |
| radio_tmr_tifs_set(EVENT_IFS_US); |
| radio_switch_complete_and_tx(0, 0, 0, 0); |
| |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| if (ull_filter_lll_rl_enabled()) { |
| struct lll_filter *filter = |
| ull_filter_lll_get((lll->filter_policy & |
| SCAN_FP_FILTER) != 0U); |
| uint8_t count, *irks = ull_filter_lll_irks_get(&count); |
| |
| radio_filter_configure(filter->enable_bitmask, |
| filter->addr_type_bitmask, |
| (uint8_t *)filter->bdaddr); |
| |
| radio_ar_configure(count, irks); |
| } else |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_FILTER_ACCEPT_LIST) && lll->filter_policy) { |
| /* Setup Radio Filter */ |
| struct lll_filter *fal = ull_filter_lll_get(true); |
| |
| radio_filter_configure(fal->enable_bitmask, |
| fal->addr_type_bitmask, |
| (uint8_t *)fal->bdaddr); |
| } |
| |
| ticks_at_event = prepare_param->ticks_at_expire; |
| ull = HDR_LLL2ULL(lll); |
| ticks_at_event += lll_event_offset_get(ull); |
| |
| ticks_at_start = ticks_at_event; |
| ticks_at_start += HAL_TICKER_US_TO_TICKS(EVENT_OVERHEAD_START_US); |
| |
| remainder = prepare_param->remainder; |
| remainder_us = radio_tmr_start(0, ticks_at_start, remainder); |
| |
| /* capture end of Rx-ed PDU, for initiator to calculate first |
| * central event. |
| */ |
| radio_tmr_end_capture(); |
| |
| /* scanner always measures RSSI */ |
| radio_rssi_measure(); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_LNA_PIN) |
| radio_gpio_lna_setup(); |
| radio_gpio_pa_lna_enable(remainder_us + |
| radio_rx_ready_delay_get(0, 0) - |
| HAL_RADIO_GPIO_LNA_OFFSET); |
| #else /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| ARG_UNUSED(remainder_us); |
| #endif /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| |
| #if defined(CONFIG_BT_CTLR_XTAL_ADVANCED) && \ |
| (EVENT_OVERHEAD_PREEMPT_US <= EVENT_OVERHEAD_PREEMPT_MIN_US) |
| /* check if preempt to start has changed */ |
| if (lll_preempt_calc(ull, (TICKER_ID_SCAN_BASE + |
| ull_scan_lll_handle_get(lll)), |
| ticks_at_event)) { |
| radio_isr_set(isr_abort, lll); |
| radio_disable(); |
| } else |
| #endif /* CONFIG_BT_CTLR_XTAL_ADVANCED */ |
| { |
| uint32_t ret; |
| |
| if (lll->ticks_window) { |
| /* start window close timeout */ |
| ret = ticker_start(TICKER_INSTANCE_ID_CTLR, |
| TICKER_USER_ID_LLL, |
| TICKER_ID_SCAN_STOP, |
| ticks_at_event, lll->ticks_window, |
| TICKER_NULL_PERIOD, |
| TICKER_NULL_REMAINDER, |
| TICKER_NULL_LAZY, TICKER_NULL_SLOT, |
| ticker_stop_cb, lll, |
| ticker_op_start_cb, |
| (void *)__LINE__); |
| LL_ASSERT((ret == TICKER_STATUS_SUCCESS) || |
| (ret == TICKER_STATUS_BUSY)); |
| } |
| |
| ret = lll_prepare_done(lll); |
| LL_ASSERT(!ret); |
| } |
| |
| DEBUG_RADIO_START_O(1); |
| |
| return 0; |
| } |
| |
| static int resume_prepare_cb(struct lll_prepare_param *p) |
| { |
| struct ull_hdr *ull = HDR_LLL2ULL(p->param); |
| |
| p->ticks_at_expire = ticker_ticks_now_get() - lll_event_offset_get(ull); |
| p->remainder = 0; |
| p->lazy = 0; |
| |
| return prepare_cb(p); |
| } |
| |
| static int is_abort_cb(void *next, void *curr, lll_prepare_cb_t *resume_cb) |
| { |
| struct lll_scan *lll = curr; |
| |
| /* TODO: check prio */ |
| if (next != curr) { |
| int err; |
| |
| /* wrap back after the pre-empter */ |
| *resume_cb = resume_prepare_cb; |
| |
| /* Retain HF clk */ |
| err = lll_clk_on(); |
| LL_ASSERT(!err || err == -EINPROGRESS); |
| |
| return -EAGAIN; |
| } |
| |
| radio_isr_set(isr_window, lll); |
| radio_disable(); |
| |
| if (++lll->chan == 3U) { |
| lll->chan = 0U; |
| } |
| |
| lll_chan_set(37 + lll->chan); |
| |
| return 0; |
| } |
| |
| static void abort_cb(struct lll_prepare_param *prepare_param, void *param) |
| { |
| int err; |
| |
| /* NOTE: This is not a prepare being cancelled */ |
| if (!prepare_param) { |
| /* Perform event abort here. |
| * After event has been cleanly aborted, clean up resources |
| * and dispatch event done. |
| */ |
| radio_isr_set(isr_abort, param); |
| radio_disable(); |
| return; |
| } |
| |
| /* NOTE: Else clean the top half preparations of the aborted event |
| * currently in preparation pipeline. |
| */ |
| err = lll_clk_off(); |
| LL_ASSERT(!err || err == -EBUSY); |
| |
| lll_done(param); |
| } |
| |
| static void ticker_stop_cb(uint32_t ticks_at_expire, uint32_t ticks_drift, |
| uint32_t remainder, uint16_t lazy, uint8_t force, |
| void *param) |
| { |
| radio_isr_set(isr_cleanup, param); |
| radio_disable(); |
| } |
| |
| static void ticker_op_start_cb(uint32_t status, void *param) |
| { |
| ARG_UNUSED(param); |
| |
| LL_ASSERT(status == TICKER_STATUS_SUCCESS); |
| } |
| |
| static void isr_rx(void *param) |
| { |
| struct lll_scan *lll = (void *)param; |
| uint8_t trx_done; |
| uint8_t crc_ok; |
| uint8_t devmatch_ok; |
| uint8_t devmatch_id; |
| uint8_t irkmatch_ok; |
| uint8_t irkmatch_id; |
| uint8_t rssi_ready; |
| uint8_t rl_idx; |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| lll_prof_latency_capture(); |
| } |
| |
| /* Read radio status and events */ |
| trx_done = radio_is_done(); |
| if (trx_done) { |
| crc_ok = radio_crc_is_valid(); |
| devmatch_ok = radio_filter_has_match(); |
| devmatch_id = radio_filter_match_get(); |
| if (IS_ENABLED(CONFIG_BT_CTLR_PRIVACY)) { |
| irkmatch_ok = radio_ar_has_match(); |
| irkmatch_id = radio_ar_match_get(); |
| } else { |
| irkmatch_ok = 0U; |
| irkmatch_id = FILTER_IDX_NONE; |
| } |
| rssi_ready = radio_rssi_is_ready(); |
| } else { |
| crc_ok = devmatch_ok = irkmatch_ok = rssi_ready = 0U; |
| devmatch_id = irkmatch_id = FILTER_IDX_NONE; |
| } |
| |
| /* Clear radio status and events */ |
| lll_isr_status_reset(); |
| |
| if (IS_ENABLED(HAL_RADIO_GPIO_HAVE_PA_PIN) || |
| IS_ENABLED(HAL_RADIO_GPIO_HAVE_LNA_PIN)) { |
| radio_gpio_pa_lna_disable(); |
| } |
| |
| if (!trx_done) { |
| goto isr_rx_do_close; |
| } |
| |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| rl_idx = devmatch_ok ? |
| ull_filter_lll_rl_idx(((lll->filter_policy & |
| SCAN_FP_FILTER) != 0U), |
| devmatch_id) : |
| irkmatch_ok ? ull_filter_lll_rl_irk_idx(irkmatch_id) : |
| FILTER_IDX_NONE; |
| #else |
| rl_idx = FILTER_IDX_NONE; |
| #endif |
| if (crc_ok && isr_rx_scan_check(lll, irkmatch_ok, devmatch_ok, |
| rl_idx)) { |
| uint32_t err; |
| |
| err = isr_rx_pdu(lll, devmatch_ok, devmatch_id, irkmatch_ok, |
| irkmatch_id, rl_idx, rssi_ready); |
| if (!err) { |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| lll_prof_send(); |
| } |
| |
| return; |
| } |
| } |
| |
| isr_rx_do_close: |
| radio_isr_set(isr_done, lll); |
| radio_disable(); |
| } |
| |
| static void isr_tx(void *param) |
| { |
| struct node_rx_pdu *node_rx; |
| uint32_t hcto; |
| |
| /* TODO: MOVE to a common interface, isr_lll_radio_status? */ |
| /* Clear radio status and events */ |
| radio_status_reset(); |
| radio_tmr_status_reset(); |
| |
| if (IS_ENABLED(HAL_RADIO_GPIO_HAVE_PA_PIN) || |
| IS_ENABLED(HAL_RADIO_GPIO_HAVE_LNA_PIN)) { |
| radio_gpio_pa_lna_disable(); |
| } |
| /* TODO: MOVE ^^ */ |
| |
| /* setup tIFS switching */ |
| radio_tmr_tifs_set(EVENT_IFS_US); |
| radio_switch_complete_and_tx(0, 0, 0, 0); |
| |
| node_rx = ull_pdu_rx_alloc_peek(1); |
| LL_ASSERT(node_rx); |
| radio_pkt_rx_set(node_rx->pdu); |
| |
| /* assert if radio packet ptr is not set and radio started rx */ |
| LL_ASSERT(!radio_is_ready()); |
| |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| if (ull_filter_lll_rl_enabled()) { |
| uint8_t count, *irks = ull_filter_lll_irks_get(&count); |
| |
| radio_ar_configure(count, irks); |
| } |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| /* +/- 2us active clock jitter, +1 us hcto compensation */ |
| hcto = radio_tmr_tifs_base_get() + EVENT_IFS_US + 4 + 1; |
| hcto += radio_rx_chain_delay_get(0, 0); |
| hcto += addr_us_get(0); |
| hcto -= radio_tx_chain_delay_get(0, 0); |
| |
| radio_tmr_hcto_configure(hcto); |
| |
| radio_rssi_measure(); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_LNA_PIN) |
| radio_gpio_lna_setup(); |
| radio_gpio_pa_lna_enable(radio_tmr_tifs_base_get() + EVENT_IFS_US - 4 - |
| radio_tx_chain_delay_get(0, 0) - |
| HAL_RADIO_GPIO_LNA_OFFSET); |
| #endif /* HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| |
| radio_isr_set(isr_rx, param); |
| } |
| |
| static void isr_common_done(void *param) |
| { |
| struct node_rx_pdu *node_rx; |
| |
| /* TODO: MOVE to a common interface, isr_lll_radio_status? */ |
| /* Clear radio status and events */ |
| lll_isr_status_reset(); |
| |
| if (IS_ENABLED(HAL_RADIO_GPIO_HAVE_PA_PIN) || |
| IS_ENABLED(HAL_RADIO_GPIO_HAVE_LNA_PIN)) { |
| radio_gpio_pa_lna_disable(); |
| } |
| /* TODO: MOVE ^^ */ |
| |
| /* setup tIFS switching */ |
| radio_tmr_tifs_set(EVENT_IFS_US); |
| radio_switch_complete_and_tx(0, 0, 0, 0); |
| |
| node_rx = ull_pdu_rx_alloc_peek(1); |
| LL_ASSERT(node_rx); |
| radio_pkt_rx_set(node_rx->pdu); |
| |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| if (ull_filter_lll_rl_enabled()) { |
| uint8_t count, *irks = ull_filter_lll_irks_get(&count); |
| |
| radio_ar_configure(count, irks); |
| } |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| radio_rssi_measure(); |
| |
| radio_isr_set(isr_rx, param); |
| } |
| |
| static void isr_done(void *param) |
| { |
| uint32_t start_us; |
| |
| isr_common_done(param); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_LNA_PIN) |
| start_us = radio_tmr_start_now(0); |
| |
| radio_gpio_lna_setup(); |
| radio_gpio_pa_lna_enable(start_us + |
| radio_rx_ready_delay_get(0, 0) - |
| HAL_RADIO_GPIO_LNA_OFFSET); |
| #else /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| ARG_UNUSED(start_us); |
| |
| radio_rx_enable(); |
| #endif /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| |
| /* capture end of Rx-ed PDU, for initiator to calculate first |
| * central event. |
| */ |
| radio_tmr_end_capture(); |
| } |
| |
| static void isr_window(void *param) |
| { |
| uint32_t ticks_at_start, remainder_us; |
| |
| isr_common_done(param); |
| |
| ticks_at_start = ticker_ticks_now_get() + |
| HAL_TICKER_CNTR_CMP_OFFSET_MIN; |
| remainder_us = radio_tmr_start_tick(0, ticks_at_start); |
| |
| /* capture end of Rx-ed PDU, for initiator to calculate first |
| * central event. |
| */ |
| radio_tmr_end_capture(); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_LNA_PIN) |
| radio_gpio_lna_setup(); |
| radio_gpio_pa_lna_enable(remainder_us + |
| radio_rx_ready_delay_get(0, 0) - |
| HAL_RADIO_GPIO_LNA_OFFSET); |
| #else /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| ARG_UNUSED(remainder_us); |
| #endif /* !HAL_RADIO_GPIO_HAVE_LNA_PIN */ |
| } |
| |
| static void isr_abort(void *param) |
| { |
| /* Clear radio status and events */ |
| lll_isr_status_reset(); |
| |
| if (IS_ENABLED(HAL_RADIO_GPIO_HAVE_PA_PIN) || |
| IS_ENABLED(HAL_RADIO_GPIO_HAVE_LNA_PIN)) { |
| radio_gpio_pa_lna_disable(); |
| } |
| |
| /* Scanner stop can expire while here in this ISR. |
| * Deferred attempt to stop can fail as it would have |
| * expired, hence ignore failure. |
| */ |
| ticker_stop(TICKER_INSTANCE_ID_CTLR, TICKER_USER_ID_LLL, |
| TICKER_ID_SCAN_STOP, NULL, NULL); |
| |
| /* Under race conditions, radio could get started while entering ISR */ |
| radio_disable(); |
| |
| isr_cleanup(param); |
| } |
| |
| static void isr_cleanup(void *param) |
| { |
| struct lll_scan *lll = param; |
| struct node_rx_hdr *node_rx; |
| int err; |
| |
| if (lll_is_done(param)) { |
| return; |
| } |
| |
| radio_filter_disable(); |
| |
| if (++lll->chan == 3U) { |
| lll->chan = 0U; |
| } |
| |
| #if defined(CONFIG_BT_HCI_MESH_EXT) |
| if (_radio.advertiser.is_enabled && _radio.advertiser.is_mesh && |
| !_radio.advertiser.retry) { |
| mayfly_mesh_stop(NULL); |
| } |
| #endif /* CONFIG_BT_HCI_MESH_EXT */ |
| |
| #if defined(CONFIG_BT_CTLR_SCAN_INDICATION) |
| node_rx = ull_pdu_rx_alloc_peek(3); |
| if (node_rx) { |
| ull_pdu_rx_alloc(); |
| |
| /* TODO: add other info by defining a payload struct */ |
| node_rx->type = NODE_RX_TYPE_SCAN_INDICATION; |
| |
| ull_rx_put(node_rx->link, node_rx); |
| ull_rx_sched(); |
| } |
| #else /* !CONFIG_BT_CTLR_SCAN_INDICATION */ |
| ARG_UNUSED(node_rx); |
| #endif /* !CONFIG_BT_CTLR_SCAN_INDICATION */ |
| |
| radio_isr_set(isr_race, param); |
| radio_tmr_stop(); |
| |
| err = lll_clk_off(); |
| LL_ASSERT(!err || err == -EBUSY); |
| |
| lll_done(NULL); |
| } |
| |
| static void isr_race(void *param) |
| { |
| /* NOTE: lll_disable could have a race with ... */ |
| radio_status_reset(); |
| } |
| |
| static inline bool isr_rx_scan_check(struct lll_scan *lll, uint8_t irkmatch_ok, |
| uint8_t devmatch_ok, uint8_t rl_idx) |
| { |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| return (((lll->filter_policy & SCAN_FP_FILTER) == 0U) && |
| (!devmatch_ok || ull_filter_lll_rl_idx_allowed(irkmatch_ok, |
| rl_idx))) || |
| (((lll->filter_policy & SCAN_FP_FILTER) != 0U) && |
| (devmatch_ok || ull_filter_lll_irk_in_fal(rl_idx))); |
| #else |
| return ((lll->filter_policy & SCAN_FP_FILTER) == 0U) || |
| devmatch_ok; |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| } |
| |
| static inline uint32_t isr_rx_pdu(struct lll_scan *lll, uint8_t devmatch_ok, |
| uint8_t devmatch_id, uint8_t irkmatch_ok, |
| uint8_t irkmatch_id, uint8_t rl_idx, uint8_t rssi_ready) |
| { |
| struct node_rx_pdu *node_rx; |
| struct pdu_adv *pdu_adv_rx; |
| bool dir_report = false; |
| |
| node_rx = ull_pdu_rx_alloc_peek(1); |
| LL_ASSERT(node_rx); |
| |
| pdu_adv_rx = (void *)node_rx->pdu; |
| |
| if (0) { |
| #if defined(CONFIG_BT_CENTRAL) |
| /* Initiator */ |
| } else if (lll->conn && |
| isr_scan_init_check(lll, pdu_adv_rx, rl_idx)) { |
| struct lll_conn *lll_conn; |
| struct node_rx_ftr *ftr; |
| struct node_rx_pdu *rx; |
| struct pdu_adv *pdu_tx; |
| uint32_t conn_interval_us; |
| uint32_t conn_offset_us; |
| uint32_t conn_space_us; |
| struct ull_hdr *ull; |
| uint32_t pdu_end_us; |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| bt_addr_t *lrpa; |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_CHAN_SEL_2)) { |
| rx = ull_pdu_rx_alloc_peek(4); |
| } else { |
| rx = ull_pdu_rx_alloc_peek(3); |
| } |
| |
| if (!rx) { |
| return -ENOBUFS; |
| } |
| |
| pdu_end_us = radio_tmr_end_get(); |
| if (!lll->ticks_window) { |
| uint32_t scan_interval_us; |
| |
| /* FIXME: is this correct for continuous scanning? */ |
| scan_interval_us = lll->interval * SCAN_INT_UNIT_US; |
| pdu_end_us %= scan_interval_us; |
| } |
| ull = HDR_LLL2ULL(lll); |
| if (pdu_end_us > (HAL_TICKER_TICKS_TO_US(ull->ticks_slot) - |
| EVENT_IFS_US - 352 - EVENT_OVERHEAD_START_US - |
| EVENT_TICKER_RES_MARGIN_US)) { |
| return -ETIME; |
| } |
| |
| radio_switch_complete_and_disable(); |
| |
| /* Acquire the connection context */ |
| lll_conn = lll->conn; |
| |
| /* Tx the connect request packet */ |
| pdu_tx = (void *)radio_pkt_scratch_get(); |
| pdu_tx->type = PDU_ADV_TYPE_CONNECT_IND; |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_CHAN_SEL_2)) { |
| pdu_tx->chan_sel = 1; |
| } else { |
| pdu_tx->chan_sel = 0; |
| } |
| |
| pdu_tx->rx_addr = pdu_adv_rx->tx_addr; |
| pdu_tx->len = sizeof(struct pdu_adv_connect_ind); |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| lrpa = ull_filter_lll_lrpa_get(rl_idx); |
| if (lll->rpa_gen && lrpa) { |
| pdu_tx->tx_addr = 1; |
| memcpy(&pdu_tx->connect_ind.init_addr[0], lrpa->val, |
| BDADDR_SIZE); |
| } else { |
| #else |
| if (1) { |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| pdu_tx->tx_addr = lll->init_addr_type; |
| memcpy(&pdu_tx->connect_ind.init_addr[0], |
| &lll->init_addr[0], BDADDR_SIZE); |
| } |
| memcpy(&pdu_tx->connect_ind.adv_addr[0], |
| &pdu_adv_rx->adv_ind.addr[0], BDADDR_SIZE); |
| memcpy(&pdu_tx->connect_ind.access_addr[0], |
| &lll_conn->access_addr[0], 4); |
| memcpy(&pdu_tx->connect_ind.crc_init[0], |
| &lll_conn->crc_init[0], 3); |
| pdu_tx->connect_ind.win_size = 1; |
| |
| conn_interval_us = (uint32_t)lll_conn->interval * |
| CONN_INT_UNIT_US; |
| conn_offset_us = radio_tmr_end_get() + 502 + |
| CONN_INT_UNIT_US; |
| |
| if (!IS_ENABLED(CONFIG_BT_CTLR_SCHED_ADVANCED) || |
| lll->conn_win_offset_us == 0U) { |
| conn_space_us = conn_offset_us; |
| pdu_tx->connect_ind.win_offset = sys_cpu_to_le16(0); |
| } else { |
| conn_space_us = lll->conn_win_offset_us; |
| while ((conn_space_us & ((uint32_t)1 << 31)) || |
| (conn_space_us < conn_offset_us)) { |
| conn_space_us += conn_interval_us; |
| } |
| pdu_tx->connect_ind.win_offset = |
| sys_cpu_to_le16((conn_space_us - |
| conn_offset_us) / |
| CONN_INT_UNIT_US); |
| pdu_tx->connect_ind.win_size++; |
| } |
| |
| pdu_tx->connect_ind.interval = |
| sys_cpu_to_le16(lll_conn->interval); |
| pdu_tx->connect_ind.latency = |
| sys_cpu_to_le16(lll_conn->latency); |
| pdu_tx->connect_ind.timeout = |
| sys_cpu_to_le16(lll->conn_timeout); |
| memcpy(&pdu_tx->connect_ind.chan_map[0], |
| &lll_conn->data_chan_map[0], |
| sizeof(pdu_tx->connect_ind.chan_map)); |
| pdu_tx->connect_ind.hop = lll_conn->data_chan_hop; |
| pdu_tx->connect_ind.sca = lll_clock_sca_local_get(); |
| |
| radio_pkt_tx_set(pdu_tx); |
| |
| /* assert if radio packet ptr is not set and radio started tx */ |
| LL_ASSERT(!radio_is_ready()); |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| lll_prof_cputime_capture(); |
| } |
| |
| radio_isr_set(isr_cleanup, lll); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_PA_PIN) |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| /* PA/LNA enable is overwriting packet end |
| * used in ISR profiling, hence back it up |
| * for later use. |
| */ |
| lll_prof_radio_end_backup(); |
| } |
| radio_gpio_pa_setup(); |
| radio_gpio_pa_lna_enable(radio_tmr_tifs_base_get() + |
| EVENT_IFS_US - |
| radio_rx_chain_delay_get(0, 0) - |
| HAL_RADIO_GPIO_PA_OFFSET); |
| #endif /* HAL_RADIO_GPIO_HAVE_PA_PIN */ |
| |
| #if defined(CONFIG_BT_CTLR_CONN_RSSI) |
| if (rssi_ready) { |
| lll_conn->rssi_latest = radio_rssi_get(); |
| } |
| #endif /* CONFIG_BT_CTLR_CONN_RSSI */ |
| |
| /* block CPU so that there is no CRC error on pdu tx, |
| * this is only needed if we want the CPU to sleep. |
| * while(!radio_has_disabled()) |
| * {cpu_sleep();} |
| * radio_status_reset(); |
| */ |
| |
| /* Stop further LLL radio events */ |
| lll->conn->central.initiated = 1; |
| |
| rx = ull_pdu_rx_alloc(); |
| |
| rx->hdr.type = NODE_RX_TYPE_CONNECTION; |
| rx->hdr.handle = 0xffff; |
| |
| uint8_t pdu_adv_rx_chan_sel = pdu_adv_rx->chan_sel; |
| |
| memcpy(rx->pdu, pdu_tx, (offsetof(struct pdu_adv, connect_ind) + |
| sizeof(struct pdu_adv_connect_ind))); |
| |
| /* |
| * Overwrite the sent chan sel with received chan sel, when |
| * giving this PDU to the higher layer. |
| */ |
| pdu_adv_rx = (void *)rx->pdu; |
| pdu_adv_rx->chan_sel = pdu_adv_rx_chan_sel; |
| |
| ftr = &(rx->hdr.rx_ftr); |
| |
| ftr->param = lll; |
| ftr->ticks_anchor = radio_tmr_start_get(); |
| ftr->radio_end_us = conn_space_us - |
| radio_tx_chain_delay_get(0, 0); |
| |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| ftr->rl_idx = irkmatch_ok ? rl_idx : FILTER_IDX_NONE; |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_CHAN_SEL_2)) { |
| ftr->extra = ull_pdu_rx_alloc(); |
| } |
| |
| ull_rx_put(rx->hdr.link, rx); |
| ull_rx_sched(); |
| |
| return 0; |
| #endif /* CONFIG_BT_CENTRAL */ |
| |
| /* Active scanner */ |
| } else if (((pdu_adv_rx->type == PDU_ADV_TYPE_ADV_IND) || |
| (pdu_adv_rx->type == PDU_ADV_TYPE_SCAN_IND)) && |
| (pdu_adv_rx->len <= sizeof(struct pdu_adv_adv_ind)) && |
| lll->type && |
| #if defined(CONFIG_BT_CENTRAL) |
| !lll->conn) { |
| #else /* !CONFIG_BT_CENTRAL */ |
| 1) { |
| #endif /* !CONFIG_BT_CENTRAL */ |
| struct pdu_adv *pdu_tx; |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| bt_addr_t *lrpa; |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| uint32_t err; |
| |
| /* setup tIFS switching */ |
| radio_tmr_tifs_set(EVENT_IFS_US); |
| radio_switch_complete_and_rx(0); |
| |
| /* save the adv packet */ |
| err = isr_rx_scan_report(lll, rssi_ready, |
| irkmatch_ok ? rl_idx : FILTER_IDX_NONE, |
| false); |
| if (err) { |
| return err; |
| } |
| |
| /* prepare the scan request packet */ |
| pdu_tx = (void *)radio_pkt_scratch_get(); |
| pdu_tx->type = PDU_ADV_TYPE_SCAN_REQ; |
| pdu_tx->rx_addr = pdu_adv_rx->tx_addr; |
| pdu_tx->len = sizeof(struct pdu_adv_scan_req); |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| lrpa = ull_filter_lll_lrpa_get(rl_idx); |
| if (lll->rpa_gen && lrpa) { |
| pdu_tx->tx_addr = 1; |
| memcpy(&pdu_tx->scan_req.scan_addr[0], lrpa->val, |
| BDADDR_SIZE); |
| } else { |
| #else |
| if (1) { |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| pdu_tx->tx_addr = lll->init_addr_type; |
| memcpy(&pdu_tx->scan_req.scan_addr[0], |
| &lll->init_addr[0], BDADDR_SIZE); |
| } |
| memcpy(&pdu_tx->scan_req.adv_addr[0], |
| &pdu_adv_rx->adv_ind.addr[0], BDADDR_SIZE); |
| |
| radio_pkt_tx_set(pdu_tx); |
| |
| /* assert if radio packet ptr is not set and radio started tx */ |
| LL_ASSERT(!radio_is_ready()); |
| |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| lll_prof_cputime_capture(); |
| |
| } |
| |
| /* capture end of Tx-ed PDU, used to calculate HCTO. */ |
| radio_tmr_end_capture(); |
| |
| #if defined(HAL_RADIO_GPIO_HAVE_PA_PIN) |
| if (IS_ENABLED(CONFIG_BT_CTLR_PROFILE_ISR)) { |
| /* PA/LNA enable is overwriting packet end |
| * used in ISR profiling, hence back it up |
| * for later use. |
| */ |
| lll_prof_radio_end_backup(); |
| } |
| |
| radio_gpio_pa_setup(); |
| radio_gpio_pa_lna_enable(radio_tmr_tifs_base_get() + |
| EVENT_IFS_US - |
| radio_rx_chain_delay_get(0, 0) - |
| HAL_RADIO_GPIO_PA_OFFSET); |
| #endif /* HAL_RADIO_GPIO_HAVE_PA_PIN */ |
| |
| /* switch scanner state to active */ |
| lll->state = 1U; |
| radio_isr_set(isr_tx, lll); |
| |
| return 0; |
| } |
| /* Passive scanner or scan responses */ |
| else if (((((pdu_adv_rx->type == PDU_ADV_TYPE_ADV_IND) || |
| (pdu_adv_rx->type == PDU_ADV_TYPE_NONCONN_IND) || |
| (pdu_adv_rx->type == PDU_ADV_TYPE_SCAN_IND)) && |
| (pdu_adv_rx->len <= sizeof(struct pdu_adv_adv_ind))) || |
| ((pdu_adv_rx->type == PDU_ADV_TYPE_DIRECT_IND) && |
| (pdu_adv_rx->len == sizeof(struct pdu_adv_direct_ind)) && |
| (/* allow directed adv packets addressed to this device */ |
| isr_scan_tgta_check(lll, false, pdu_adv_rx, rl_idx, |
| &dir_report))) || |
| #if defined(CONFIG_BT_CTLR_ADV_EXT) |
| ((pdu_adv_rx->type == PDU_ADV_TYPE_EXT_IND) && |
| (lll->phy)) || |
| #endif /* CONFIG_BT_CTLR_ADV_EXT */ |
| ((pdu_adv_rx->type == PDU_ADV_TYPE_SCAN_RSP) && |
| (pdu_adv_rx->len <= sizeof(struct pdu_adv_scan_rsp)) && |
| (lll->state != 0U) && |
| isr_scan_rsp_adva_matches(pdu_adv_rx))) && |
| (pdu_adv_rx->len != 0) && |
| #if defined(CONFIG_BT_CENTRAL) |
| !lll->conn) { |
| #else /* !CONFIG_BT_CENTRAL */ |
| 1) { |
| #endif /* !CONFIG_BT_CENTRAL */ |
| uint32_t err; |
| |
| /* save the scan response packet */ |
| err = isr_rx_scan_report(lll, rssi_ready, |
| irkmatch_ok ? rl_idx : |
| FILTER_IDX_NONE, |
| dir_report); |
| if (err) { |
| return err; |
| } |
| } |
| /* invalid PDU */ |
| else { |
| /* ignore and close this rx/tx chain ( code below ) */ |
| return 1; |
| } |
| |
| return 1; |
| } |
| |
| #if defined(CONFIG_BT_CENTRAL) |
| static inline bool isr_scan_init_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, uint8_t rl_idx) |
| { |
| return ((((lll->filter_policy & SCAN_FP_FILTER) != 0U) || |
| isr_scan_init_adva_check(lll, pdu, rl_idx)) && |
| (((pdu->type == PDU_ADV_TYPE_ADV_IND) && |
| (pdu->len <= sizeof(struct pdu_adv_adv_ind))) || |
| ((pdu->type == PDU_ADV_TYPE_DIRECT_IND) && |
| (pdu->len == sizeof(struct pdu_adv_direct_ind)) && |
| (/* allow directed adv packets addressed to this device */ |
| isr_scan_tgta_check(lll, true, pdu, rl_idx, NULL))))); |
| } |
| |
| static inline bool isr_scan_init_adva_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, uint8_t rl_idx) |
| { |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| /* Only applies to initiator with no filter accept list */ |
| if (rl_idx != FILTER_IDX_NONE) { |
| return (rl_idx == lll->rl_idx); |
| } else if (!ull_filter_lll_rl_addr_allowed(pdu->tx_addr, |
| pdu->adv_ind.addr, |
| &rl_idx)) { |
| return false; |
| } |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| return ((lll->adv_addr_type == pdu->tx_addr) && |
| !memcmp(lll->adv_addr, &pdu->adv_ind.addr[0], BDADDR_SIZE)); |
| } |
| #endif /* CONFIG_BT_CENTRAL */ |
| |
| static inline bool isr_scan_tgta_check(struct lll_scan *lll, bool init, |
| struct pdu_adv *pdu, uint8_t rl_idx, |
| bool *dir_report) |
| { |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| if (ull_filter_lll_rl_addr_resolve(pdu->rx_addr, |
| pdu->direct_ind.tgt_addr, rl_idx)) { |
| return true; |
| } else if (init && lll->rpa_gen && |
| ull_filter_lll_lrpa_get(rl_idx)) { |
| /* Initiator generating RPAs, and could not resolve TargetA: |
| * discard |
| */ |
| return false; |
| } |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| |
| return (((lll->init_addr_type == pdu->rx_addr) && |
| !memcmp(lll->init_addr, pdu->direct_ind.tgt_addr, |
| BDADDR_SIZE))) || |
| /* allow directed adv packets where TargetA address |
| * is resolvable private address (scanner only) |
| */ |
| isr_scan_tgta_rpa_check(lll, pdu, dir_report); |
| } |
| |
| static inline bool isr_scan_tgta_rpa_check(struct lll_scan *lll, |
| struct pdu_adv *pdu, |
| bool *dir_report) |
| { |
| if (((lll->filter_policy & SCAN_FP_EXT) != 0U) && |
| (pdu->rx_addr != 0) && |
| ((pdu->direct_ind.tgt_addr[5] & 0xc0) == 0x40)) { |
| |
| if (dir_report) { |
| *dir_report = true; |
| } |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static inline bool isr_scan_rsp_adva_matches(struct pdu_adv *srsp) |
| { |
| struct pdu_adv *sreq = (void *)radio_pkt_scratch_get(); |
| |
| return ((sreq->rx_addr == srsp->tx_addr) && |
| (memcmp(&sreq->scan_req.adv_addr[0], |
| &srsp->scan_rsp.addr[0], BDADDR_SIZE) == 0)); |
| } |
| |
| static uint32_t isr_rx_scan_report(struct lll_scan *lll, uint8_t rssi_ready, |
| uint8_t rl_idx, bool dir_report) |
| { |
| struct node_rx_pdu *node_rx; |
| struct pdu_adv *pdu_adv_rx; |
| |
| node_rx = ull_pdu_rx_alloc_peek(3); |
| if (!node_rx) { |
| return 1; |
| } |
| ull_pdu_rx_alloc(); |
| |
| /* Prepare the report (adv or scan resp) */ |
| node_rx->hdr.handle = 0xffff; |
| if (0) { |
| |
| #if defined(CONFIG_BT_HCI_MESH_EXT) |
| } else if (_radio.advertiser.is_enabled && |
| _radio.advertiser.is_mesh) { |
| node_rx->hdr.type = NODE_RX_TYPE_MESH_REPORT; |
| #endif /* CONFIG_BT_HCI_MESH_EXT */ |
| |
| #if defined(CONFIG_BT_CTLR_ADV_EXT) |
| } else if (lll->phy) { |
| switch (lll->phy) { |
| case PHY_1M: |
| node_rx->hdr.type = NODE_RX_TYPE_EXT_1M_REPORT; |
| break; |
| |
| case PHY_CODED: |
| node_rx->hdr.type = NODE_RX_TYPE_EXT_CODED_REPORT; |
| break; |
| |
| default: |
| LL_ASSERT(0); |
| break; |
| } |
| #endif /* CONFIG_BT_CTLR_ADV_EXT */ |
| } else { |
| node_rx->hdr.type = NODE_RX_TYPE_REPORT; |
| } |
| |
| pdu_adv_rx = (void *)node_rx->pdu; |
| |
| node_rx->hdr.rx_ftr.rssi = (rssi_ready) ? |
| (radio_rssi_get() & 0x7f) |
| : 0x7f; |
| #if defined(CONFIG_BT_CTLR_PRIVACY) |
| /* save the resolving list index. */ |
| node_rx->hdr.rx_ftr.rl_idx = rl_idx; |
| #endif /* CONFIG_BT_CTLR_PRIVACY */ |
| #if defined(CONFIG_BT_CTLR_EXT_SCAN_FP) |
| /* save the directed adv report flag */ |
| node_rx->hdr.rx_ftr.direct = dir_report; |
| #endif /* CONFIG_BT_CTLR_EXT_SCAN_FP */ |
| #if defined(CONFIG_BT_HCI_MESH_EXT) |
| if (node_rx->hdr.type == NODE_RX_TYPE_MESH_REPORT) { |
| /* save channel and anchor point ticks. */ |
| node_rx->hdr.rx_ftr.chan = _radio.scanner.chan - 1; |
| node_rx->hdr.rx_ftr.ticks_anchor = _radio.ticks_anchor; |
| } |
| #endif /* CONFIG_BT_CTLR_EXT_SCAN_FP */ |
| |
| ull_rx_put(node_rx->hdr.link, node_rx); |
| ull_rx_sched(); |
| |
| return 0; |
| } |