diff options
Diffstat (limited to 'drivers/firewire/fw-transaction.h')
| -rw-r--r-- | drivers/firewire/fw-transaction.h | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/drivers/firewire/fw-transaction.h b/drivers/firewire/fw-transaction.h index 6352734..1b7e4dc 100644 --- a/drivers/firewire/fw-transaction.h +++ b/drivers/firewire/fw-transaction.h @@ -1,7 +1,4 @@ -/* -*- c-basic-offset: 8 -*- - * - * fw-transaction.h - Header for IEEE1394 transaction logic - * +/* * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net> * * This program is free software; you can redistribute it and/or modify @@ -209,7 +206,8 @@ struct fw_packet { size_t payload_length; u32 timestamp; - /* This callback is called when the packet transmission has + /* + * This callback is called when the packet transmission has * completed; for successful transmission, the status code is * the ack received from the destination, otherwise it's a * negative errno: ENOMEM, ESTALE, ETIMEDOUT, ENODEV, EIO. @@ -230,8 +228,10 @@ struct fw_transaction { struct fw_packet packet; - /* The data passed to the callback is valid only during the - * callback. */ + /* + * The data passed to the callback is valid only during the + * callback. + */ fw_transaction_callback_t callback; void *callback_data; }; @@ -291,8 +291,10 @@ struct fw_card { int link_speed; int config_rom_generation; - /* We need to store up to 4 self ID for a maximum of 63 - * devices plus 3 words for the topology map header. */ + /* + * We need to store up to 4 self ID for a maximum of 63 + * devices plus 3 words for the topology map header. + */ int self_id_count; u32 topology_map[252 + 3]; @@ -318,12 +320,14 @@ struct fw_card { struct fw_card *fw_card_get(struct fw_card *card); void fw_card_put(struct fw_card *card); -/* The iso packet format allows for an immediate header/payload part +/* + * The iso packet format allows for an immediate header/payload part * stored in 'header' immediately after the packet info plus an * indirect payload part that is pointer to by the 'payload' field. * Applications can use one or the other or both to implement simple * low-bandwidth streaming (e.g. audio) or more advanced - * scatter-gather streaming (e.g. assembling video frame automatically). */ + * scatter-gather streaming (e.g. assembling video frame automatically). + */ struct fw_iso_packet { u16 payload_length; /* Length of indirect payload. */ @@ -352,11 +356,13 @@ typedef void (*fw_iso_callback_t) (struct fw_iso_context *context, void *header, void *data); -/* An iso buffer is just a set of pages mapped for DMA in the +/* + * An iso buffer is just a set of pages mapped for DMA in the * specified direction. Since the pages are to be used for DMA, they * are not mapped into the kernel virtual address space. We store the * DMA address in the page private. The helper function - * fw_iso_buffer_map() will map the pages into a given vma. */ + * fw_iso_buffer_map() will map the pages into a given vma. + */ struct fw_iso_buffer { enum dma_data_direction direction; @@ -408,18 +414,22 @@ fw_iso_context_stop(struct fw_iso_context *ctx); struct fw_card_driver { const char *name; - /* Enable the given card with the given initial config rom. + /* + * 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. */ + * reset. + */ int (*enable) (struct fw_card *card, u32 *config_rom, size_t length); 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 + /* + * Update the config rom for an enabled card. This function * should change the config rom that is presented on the bus - * an initiate a bus reset. */ + * an initiate a bus reset. + */ int (*set_config_rom) (struct fw_card *card, u32 *config_rom, size_t length); @@ -428,12 +438,14 @@ struct fw_card_driver { /* 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 + /* + * 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. */ + * match. + */ int (*enable_phys_dma) (struct fw_card *card, int node_id, int generation); @@ -473,15 +485,15 @@ void fw_flush_transactions(struct fw_card *card); void fw_send_phy_config(struct fw_card *card, int node_id, int generation, int gap_count); -/* Called by the topology code to inform the device code of node - * activity; found, lost, or updated nodes */ +/* + * Called by the topology code to inform the device code of node + * activity; found, lost, or updated nodes. + */ void fw_node_event(struct fw_card *card, struct fw_node *node, int event); /* API used by card level drivers */ -/* Do we need phy speed here also? If we add more args, maybe we - should go back to struct fw_card_info. */ void fw_card_initialize(struct fw_card *card, const struct fw_card_driver *driver, struct device *device); |
