/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _FIREWIRE_CORE_H #define _FIREWIRE_CORE_H #include <linux/compiler.h> #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/fs.h> #include <linux/list.h> #include <linux/idr.h> #include <linux/mm_types.h> #include <linux/rwsem.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/refcount.h> struct device; struct fw_card; struct fw_device; struct fw_iso_buffer; struct fw_iso_context; struct fw_iso_packet; struct fw_node; struct fw_packet; /* -card */ extern __printf(2, 3) void fw_err(const struct fw_card *card, const char *fmt, ...); extern __printf(2, 3) void fw_notice(const struct fw_card *card, const char *fmt, ...); /* bitfields within the PHY registers */ #define PHY_LINK_ACTIVE … #define PHY_CONTENDER … #define PHY_BUS_RESET … #define PHY_EXTENDED_REGISTERS … #define PHY_BUS_SHORT_RESET … #define PHY_INT_STATUS_BITS … #define PHY_ENABLE_ACCEL … #define PHY_ENABLE_MULTI … #define PHY_PAGE_SELECT … #define BANDWIDTH_AVAILABLE_INITIAL … #define BROADCAST_CHANNEL_INITIAL … #define BROADCAST_CHANNEL_VALID … #define CSR_STATE_BIT_CMSTR … #define CSR_STATE_BIT_ABDICATE … struct fw_card_driver { … }; void fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver, struct device *device); int fw_card_add(struct fw_card *card, u32 max_receive, u32 link_speed, u64 guid); void fw_core_remove_card(struct fw_card *card); int fw_compute_block_crc(__be32 *block); void fw_schedule_bm_work(struct fw_card *card, unsigned long delay); /* -cdev */ extern const struct file_operations fw_device_ops; void fw_device_cdev_update(struct fw_device *device); void fw_device_cdev_remove(struct fw_device *device); void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p); /* -device */ extern struct rw_semaphore fw_device_rwsem; extern struct idr fw_device_idr; extern int fw_cdev_major; static inline struct fw_device *fw_device_get(struct fw_device *device) { … } static inline void fw_device_put(struct fw_device *device) { … } struct fw_device *fw_device_get_by_devt(dev_t devt); int fw_device_set_broadcast_channel(struct device *dev, void *gen); void fw_node_event(struct fw_card *card, struct fw_node *node, int event); /* -iso */ int fw_iso_buffer_alloc(struct fw_iso_buffer *buffer, int page_count); int fw_iso_buffer_map_dma(struct fw_iso_buffer *buffer, struct fw_card *card, enum dma_data_direction direction); /* -topology */ enum { … }; struct fw_node { … }; static inline struct fw_node *fw_node_get(struct fw_node *node) { … } static inline void fw_node_put(struct fw_node *node) { … } void fw_core_handle_bus_reset(struct fw_card *card, int node_id, int generation, int self_id_count, u32 *self_ids, bool bm_abdicate); void fw_destroy_nodes(struct fw_card *card); /* * Check whether new_generation is the immediate successor of old_generation. * Take counter roll-over at 255 (as per OHCI) into account. */ static inline bool is_next_generation(int new_generation, int old_generation) { … } /* -transaction */ #define TCODE_LINK_INTERNAL … static inline bool tcode_is_read_request(unsigned int tcode) { … } static inline bool tcode_is_block_packet(unsigned int tcode) { … } static inline bool tcode_is_link_internal(unsigned int tcode) { … } #define LOCAL_BUS … /* OHCI-1394's default upper bound for physical DMA: 4 GB */ #define FW_MAX_PHYSICAL_RANGE … void fw_core_handle_request(struct fw_card *card, struct fw_packet *request); void fw_core_handle_response(struct fw_card *card, struct fw_packet *packet); int fw_get_response_length(struct fw_request *request); void fw_fill_response(struct fw_packet *response, u32 *request_header, int rcode, void *payload, size_t length); void fw_request_get(struct fw_request *request); void fw_request_put(struct fw_request *request); // Convert the value of IEEE 1394 CYCLE_TIME register to the format of timeStamp field in // descriptors of 1394 OHCI. static inline u32 cycle_time_to_ohci_tstamp(u32 tstamp) { … } #define FW_PHY_CONFIG_NO_NODE_ID … #define FW_PHY_CONFIG_CURRENT_GAP_COUNT … void fw_send_phy_config(struct fw_card *card, int node_id, int generation, int gap_count); static inline bool is_ping_packet(u32 *data) { … } static inline bool is_in_fcp_region(u64 offset, size_t length) { … } #endif /* _FIREWIRE_CORE_H */
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