diff options
Diffstat (limited to 'drivers/firewire/core.h')
| -rw-r--r-- | drivers/firewire/core.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index 9b298af1cac0..e67395ce26b5 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -27,6 +27,11 @@ struct fw_packet; /* -card */ +// This is the arbitrary value we use to indicate a mismatched gap count. +#define GAP_COUNT_MISMATCHED 0 + +#define isoc_cycles_to_jiffies(cycles) usecs_to_jiffies((u32)div_u64((u64)cycles * USEC_PER_SEC, 8000)) + extern __printf(2, 3) void fw_err(const struct fw_card *card, const char *fmt, ...); extern __printf(2, 3) @@ -167,6 +172,9 @@ static inline void fw_iso_context_init_work(struct fw_iso_context *ctx, work_fun /* -topology */ +// The initial value of BUS_MANAGER_ID register, to express nothing registered. +#define BUS_MANAGER_ID_NOT_REGISTERED 0x3f + enum { FW_NODE_CREATED, FW_NODE_UPDATED, @@ -194,8 +202,8 @@ struct fw_node { /* For serializing node topology into a list. */ struct list_head link; - /* Upper layer specific data. */ - void *data; + // The device when already associated, else NULL. + struct fw_device *device; struct fw_node *ports[] __counted_by(port_count); }; @@ -219,6 +227,16 @@ static inline void fw_node_put(struct fw_node *node) kref_put(&node->kref, release_node); } +static inline struct fw_device *fw_node_get_device(struct fw_node *node) +{ + return node->device; +} + +static inline void fw_node_set_device(struct fw_node *node, struct fw_device *device) +{ + node->device = device; +} + 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); |