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Miller" , Dollar Chen , Ken Yu , linux-wpan@vger.kernel.org, Stefan Schmidt , Jian-Hong Pan Subject: [PATCH V2 3/7] net: lorawan: Add LoRaWAN API declaration for LoRa devices Date: Tue, 6 Nov 2018 00:55:41 +0800 Message-Id: <20181105165544.5215-4-starnight@g.ncu.edu.tw> X-Mailer: git-send-email 2.19.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add public LoRaWAN API for compatible LoRa device drivers. Signed-off-by: Jian-Hong Pan --- V2: - Split the LoRaWAN class module patch in V1 into LoRaWAN socket and LoRaWAN Soft MAC modules - Merge the lrw_operations: set_bw, set_mod, set_sf into set_dr - Use SPDX license identifiers include/linux/lora/lorawan.h | 137 +++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 include/linux/lora/lorawan.h diff --git a/include/linux/lora/lorawan.h b/include/linux/lora/lorawan.h new file mode 100644 index 000000000000..684c9e2eb018 --- /dev/null +++ b/include/linux/lora/lorawan.h @@ -0,0 +1,137 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause */ +/*- + * LoRaWAN compatible hardware's definitions + * + * Copyright (c) 2018 Jian-Hong, Pan + * + */ + +#ifndef __LORAWAN_H__ +#define __LORAWAN_H__ + +#include +#include + +/* List the role of the LoRaWAN hardware */ +enum { + LRW_GATEWAY, + LRW_CLASS_A_NODE, + LRW_CLASS_B_NODE, + LRW_CLASS_C_NODE, +}; + +/* List the RF modes */ +enum { + LRW_LORA, + LRW_FSK, +}; + +/** + * lrw_dr - This structure holds the RF related configuration of the data rate. + * @bw: + * Bandwidth in Hz + * + * @sf: + * Spread factor of CSS modulation used by LoRa mode + * + * @mode: + * LoRa or FSK mode + */ +struct lrw_dr { + u32 bw; + u8 sf; + u8 mode; +}; + +#define LRW_DEVADDR_LEN (sizeof(__le32)) + +/* List the LoRa device's states of LoRaWAN hardware */ +enum { + LRW_STOP, + LRW_START, + LRW_STATE_IDLE, + LRW_STATE_TX, + LRW_STATE_RX, +}; + +/** + * lrw_hw - This structure holds the LoRa device of LoRaWAN hardware. + * @priv: + * points to the private data of the LoRa device + */ +struct lrw_hw { + void *priv; +}; + +/** + * lrw_operations - Lists the LoRaWAN device/interface's operations. + * These are callback functions for the LoRaWAN module. Compatible LoRa device + * driver should implement some of them according to the usage. The + * unimplemented callback functions must be assigned as NULL. + * + * @start: + * called when the interface is being up state + * + * @stop: + * called when the interface is being down state + * + * @xmit_async: + * called to xmit the data through the interface asynchronously + * + * @set_txpower: + * called to set xmitting RF power in mBm of the interface + * + * @set_frq: + * called to set carrier frequency in Hz of the interface + * + * @set_dr: + * called to set related RF configuration of the LoRaWAN data rate + * + * @start_rx_window: + * called to ask the LoRa device open a receiving window + * + * @set_state: + * called to set the LoRa device's working state + */ +struct lrw_operations { + int (*start)(struct lrw_hw *); + void (*stop)(struct lrw_hw *); + + int (*xmit_async)(struct lrw_hw *, struct sk_buff *); + int (*set_txpower)(struct lrw_hw *, s32); + int (*set_frq)(struct lrw_hw *, u32); + int (*set_dr)(struct lrw_hw *, struct lrw_dr *); + int (*start_rx_window)(struct lrw_hw *, u32); + int (*set_state)(struct lrw_hw *, u8); +}; + +struct lrw_hw *lrw_alloc_hw(size_t, struct lrw_operations *); +void lrw_free_hw(struct lrw_hw *); +int lrw_register_hw(struct lrw_hw *); +void lrw_unregister_hw(struct lrw_hw *); +void lrw_rx_irqsave(struct lrw_hw *, struct sk_buff *); +void lrw_xmit_complete(struct lrw_hw *, struct sk_buff *); + +static inline void lrw_random_addr(u64 *addr) +{ + get_random_bytes(addr, sizeof(u64)); +} + +void lrw_set_deveui(struct lrw_hw *, u64); +u64 lrw_get_deveui(struct lrw_hw *); +void lrw_set_appeui(struct lrw_hw *, u64); +u64 lrw_get_appeui(struct lrw_hw *); +void lrw_set_devaddr(struct lrw_hw *, u32); +u32 lrw_get_devaddr(struct lrw_hw *); + +enum { + LRW_APPKEY, + LRW_NWKSKEY, + LRW_APPSKEY, +}; + +#define LRW_KEY_LEN 16 + +int lrw_set_key(struct lrw_hw *, u8, u8 *, size_t); + +#endif -- 2.19.1