17d695a535
Simplify the defines calculating the minimum required ISO PDU length and the buffer count. Co-authored-by: Emil Gydesen <emil.gydesen@nordicsemi.no> Signed-off-by: Vinayak Kariappa Chettimada <vich@nordicsemi.no>
81 lines
3.6 KiB
C
81 lines
3.6 KiB
C
/*
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* Copyright (c) 2020-2021 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* Calculate ISO PDU buffers required considering SDU fragmentation */
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#if defined(CONFIG_BT_CTLR_ADV_ISO) || defined(CONFIG_BT_CTLR_CONN_ISO)
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/* Internal ISO Tx SDU maximum length.
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* A length that is minimum of the resultant combination of the HCI ISO data fragments provided and
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* the user configured maximum transmit SDU length (CONFIG_BT_CTLR_ISO_TX_SDU_LEN_MAX).
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*/
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#define BT_CTLR_ISO_TX_SDU_LEN_MAX MIN(((CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE * \
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CONFIG_BT_CTLR_ISO_TX_BUFFERS) - \
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BT_HCI_ISO_SDU_HDR_SIZE), \
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CONFIG_BT_CTLR_ISO_TX_SDU_LEN_MAX)
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BUILD_ASSERT(BT_CTLR_ISO_TX_SDU_LEN_MAX == CONFIG_BT_CTLR_ISO_TX_SDU_LEN_MAX,
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"Insufficient ISO Buffer Size and Count for the required ISO SDU Length");
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/* Internal ISO Tx buffers to be allocated.
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* Based on the internal ISO Tx SDU maximum length, calculate the required ISO Tx buffers (PDUs)
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* required to fragment the SDU into PDU sizes scheduled for transmission.
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*/
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/* Defines the minimum required PDU length to help calculate the number of PDU buffers required
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* At least one of CONFIG_BT_CTLR_ADV_ISO or CONFIG_BT_CTLR_CONN_ISO will always be enabled,
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* so if either of them is not defined, it can default to the other
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*/
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#define BT_CTLR_ISO_TX_MIN_PDU_LEN \
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MIN(COND_CODE_1(IS_ENABLED(CONFIG_BT_CTLR_ADV_ISO), \
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(CONFIG_BT_CTLR_ADV_ISO_PDU_LEN_MAX), \
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(CONFIG_BT_CTLR_CONN_ISO_PDU_LEN_MAX)), \
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COND_CODE_1(IS_ENABLED(CONFIG_BT_CTLR_CONN_ISO), \
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(CONFIG_BT_CTLR_CONN_ISO_PDU_LEN_MAX), \
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(CONFIG_BT_CTLR_ADV_ISO_PDU_LEN_MAX)))
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#define BT_CTLR_ISO_TX_PDU_BUFFERS \
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(DIV_ROUND_UP(BT_CTLR_ISO_TX_SDU_LEN_MAX, \
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MIN((CONFIG_BT_CTLR_ISO_TX_BUFFER_SIZE - BT_HCI_ISO_SDU_TS_HDR_SIZE), \
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BT_CTLR_ISO_TX_MIN_PDU_LEN)) * \
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CONFIG_BT_CTLR_ISO_TX_BUFFERS)
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#else /* !CONFIG_BT_CTLR_ADV_ISO && !CONFIG_BT_CTLR_CONN_ISO */
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#define BT_CTLR_ISO_TX_PDU_BUFFERS 0
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#endif /* !CONFIG_BT_CTLR_ADV_ISO && !CONFIG_BT_CTLR_CONN_ISO */
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int ull_iso_init(void);
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int ull_iso_reset(void);
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struct ll_iso_datapath *ull_iso_datapath_alloc(void);
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void ull_iso_datapath_release(struct ll_iso_datapath *dp);
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void ll_iso_rx_put(memq_link_t *link, void *rx);
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void *ll_iso_rx_get(void);
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void ll_iso_rx_dequeue(void);
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void ll_iso_transmit_test_send_sdu(uint16_t handle, uint32_t ticks_at_expire);
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uint32_t ull_iso_big_sync_delay(uint8_t num_bis, uint32_t bis_spacing, uint8_t nse,
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uint32_t sub_interval, uint8_t phy, uint8_t max_pdu, bool enc);
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/* Must be implemented by vendor if vendor-specific data path is supported */
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bool ll_data_path_configured(uint8_t data_path_dir, uint8_t data_path_id);
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/* Must be implemented by vendor if vendor-specific data path is supported */
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bool ll_data_path_sink_create(uint16_t handle,
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struct ll_iso_datapath *datapath,
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isoal_sink_sdu_alloc_cb *sdu_alloc,
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isoal_sink_sdu_emit_cb *sdu_emit,
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isoal_sink_sdu_write_cb *sdu_write);
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/* Must be implemented by vendor if vendor-specific data path is supported */
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bool ll_data_path_source_create(uint16_t handle,
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struct ll_iso_datapath *datapath,
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isoal_source_pdu_alloc_cb *pdu_alloc,
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isoal_source_pdu_write_cb *pdu_write,
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isoal_source_pdu_emit_cb *pdu_emit,
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isoal_source_pdu_release_cb *pdu_release);
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/* Must be implemented by vendor if vendor-specific data path is supported */
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void ll_data_path_tx_pdu_release(uint16_t handle, struct node_tx_iso *node_tx);
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void ull_iso_resume_ticker_start(struct lll_event *resume_event,
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uint16_t group_handle,
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uint16_t stream_handle,
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uint8_t role,
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uint32_t ticks_anchor,
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uint32_t resume_timeout);
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