litmus-rt.git - The LITMUS^RT kernel.

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Commits per author per week (path 'include/linux/timex.h')

Author	W35 2025	W36 2025	W37 2025	W38 2025	Total
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#ifndef _FIREWIRE_CORE_H #define _FIREWIRE_CORE_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 <asm/atomic.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 */ /* bitfields within the PHY registers */ #define PHY_LINK_ACTIVE 0x80 #define PHY_CONTENDER 0x40 #define PHY_BUS_RESET 0x40 #define PHY_EXTENDED_REGISTERS 0xe0 #define PHY_BUS_SHORT_RESET 0x40 #define PHY_INT_STATUS_BITS 0x3c #define PHY_ENABLE_ACCEL 0x02 #define PHY_ENABLE_MULTI 0x01 #define PHY_PAGE_SELECT 0xe0 #define BANDWIDTH_AVAILABLE_INITIAL 4915 #define BROADCAST_CHANNEL_INITIAL (1 << 31 | 31) #define BROADCAST_CHANNEL_VALID (1 << 30) #define CSR_STATE_BIT_CMSTR (1 << 8) #define CSR_STATE_BIT_ABDICATE (1 << 10) struct fw_card_driver { /* * Enable the given card with the given initial config rom. * This function is expected to activate the card, and either * enable the PHY or set the link_on bit and initiate a bus * reset. */ int (*enable)(struct fw_card *card, const __be32 *config_rom, size_t length); int (*read_phy_reg)(struct fw_card *card, int address); int (*update_phy_reg)(struct fw_card *card, int address, int clear_bits, int set_bits); /* * Update the config rom for an enabled card. This function * should change the config rom that is presented on the bus * and initiate a bus reset. */ int (*set_config_rom)(struct fw_card *card, const __be32 *config_rom, size_t length); void (*send_request)(struct fw_card *card, struct fw_packet *packet); void (*send_response)(struct fw_card *card, struct fw_packet *packet); /* Calling cancel is valid once a packet has been submitted. */ int (*cancel_packet)(struct fw_card *card, struct fw_packet *packet); /* * Allow the specified node ID to do direct DMA out and in of * host memory. The card will disable this for all node when * a bus reset happens, so driver need to reenable this after * bus reset. Returns 0 on success, -ENODEV if the card * doesn't support this, -ESTALE if the generation doesn't * match. */ int (*enable_phys_dma)(struct fw_card *card, int node_id, int generation); u32 (*read_csr)(struct fw_card *card, int csr_offset); void (*write_csr)(struct fw_card *card, int csr_offset, u32 value); struct fw_iso_context * (*allocate_iso_context)(struct fw_card *card, int type, int channel, size_t header_size); void (*free_iso_context)(struct fw_iso_context *ctx); int (*start_iso)(struct fw_iso_context *ctx, s32 cycle, u32 sync, u32 tags); int (*set_iso_channels)(struct fw_iso_context *ctx, u64 *channels); int (*queue_iso)(struct fw_iso_context *ctx, struct fw_iso_packet *packet, struct fw_iso_buffer *buffer, unsigned long payload); int (*stop_iso)(struct fw_iso_context *ctx); }; 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_bus_reset(struct fw_card *card, bool delayed, bool short_reset); void fw_schedule_bm_work(struct fw_card *card, unsigned long delay); static inline struct fw_card *fw_card_get(struct fw_card *card) { kref_get(&card->kref); return card; } void fw_card_release(struct kref *kref); static inline void fw_card_put(struct fw_card *card) { kref_put(&card->kref, fw_card_release); } /* -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; 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_map(struct fw_iso_buffer *buffer, struct vm_area_struct *vma); void fw_iso_resource_manage(struct fw_card *card, int generation, u64 channels_mask, int *channel, int *bandwidth, bool allocate, __be32 buffer[2]); /* -topology */ enum { FW_NODE_CREATED, FW_NODE_UPDATED, FW_NODE_DESTROYED, FW_NODE_LINK_ON, FW_NODE_LINK_OFF, FW_NODE_INITIATED_RESET, }; struct fw_node { u16 node_id; u8 color; u8 port_count; u8 link_on:1; u8 initiated_reset:1; u8 b_path:1; u8 phy_speed:2; /* As in the self ID packet. */ u8 max_speed:2; /* Minimum of all phy-speeds on the path from the * local node to this node. */ u8 max_depth:4; /* Maximum depth to any leaf node */ u8 max_hops:4; /* Max hops in this sub tree */ atomic_t ref_count; /* For serializing node topology into a list. */ struct list_head link; /* Upper layer specific data. */ void *data; struct fw_node *ports[0]; };


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