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Diffstat (limited to 'drivers/ieee1394/ieee1394_core.h')
| -rw-r--r-- | drivers/ieee1394/ieee1394_core.h | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/drivers/ieee1394/ieee1394_core.h b/drivers/ieee1394/ieee1394_core.h deleted file mode 100644 index 0b31429d0a6..00000000000 --- a/drivers/ieee1394/ieee1394_core.h +++ /dev/null @@ -1,229 +0,0 @@ - -#ifndef _IEEE1394_CORE_H -#define _IEEE1394_CORE_H - -#include <linux/slab.h> -#include <linux/devfs_fs_kernel.h> -#include <asm/atomic.h> -#include <asm/semaphore.h> -#include "hosts.h" - - -struct hpsb_packet { - /* This struct is basically read-only for hosts with the exception of - * the data buffer contents and xnext - see below. */ - - /* This can be used for host driver internal linking. - * - * NOTE: This must be left in init state when the driver is done - * with it (e.g. by using list_del_init()), since the core does - * some sanity checks to make sure the packet is not on a - * driver_list when free'ing it. */ - struct list_head driver_list; - - nodeid_t node_id; - - /* Async and Iso types should be clear, raw means send-as-is, do not - * CRC! Byte swapping shall still be done in this case. */ - enum { hpsb_async, hpsb_iso, hpsb_raw } __attribute__((packed)) type; - - /* Okay, this is core internal and a no care for hosts. - * queued = queued for sending - * pending = sent, waiting for response - * complete = processing completed, successful or not - */ - enum { - hpsb_unused, hpsb_queued, hpsb_pending, hpsb_complete - } __attribute__((packed)) state; - - /* These are core internal. */ - signed char tlabel; - signed char ack_code; - unsigned char tcode; - - unsigned expect_response:1; - unsigned no_waiter:1; - - /* Speed to transmit with: 0 = 100Mbps, 1 = 200Mbps, 2 = 400Mbps */ - unsigned speed_code:2; - - /* - * *header and *data are guaranteed to be 32-bit DMAable and may be - * overwritten to allow in-place byte swapping. Neither of these is - * CRCed (the sizes also don't include CRC), but contain space for at - * least one additional quadlet to allow in-place CRCing. The memory is - * also guaranteed to be DMA mappable. - */ - quadlet_t *header; - quadlet_t *data; - size_t header_size; - size_t data_size; - - - struct hpsb_host *host; - unsigned int generation; - - atomic_t refcnt; - - /* Function (and possible data to pass to it) to call when this - * packet is completed. */ - void (*complete_routine)(void *); - void *complete_data; - - /* XXX This is just a hack at the moment */ - struct sk_buff *skb; - - /* Store jiffies for implementing bus timeouts. */ - unsigned long sendtime; - - quadlet_t embedded_header[5]; -}; - -/* Set a task for when a packet completes */ -void hpsb_set_packet_complete_task(struct hpsb_packet *packet, - void (*routine)(void *), void *data); - -static inline struct hpsb_packet *driver_packet(struct list_head *l) -{ - return list_entry(l, struct hpsb_packet, driver_list); -} - -void abort_timedouts(unsigned long __opaque); - -struct hpsb_packet *hpsb_alloc_packet(size_t data_size); -void hpsb_free_packet(struct hpsb_packet *packet); - - -/* - * Generation counter for the complete 1394 subsystem. Generation gets - * incremented on every change in the subsystem (e.g. bus reset). - * - * Use the functions, not the variable. - */ -static inline unsigned int get_hpsb_generation(struct hpsb_host *host) -{ - return atomic_read(&host->generation); -} - -/* - * Send a PHY configuration packet, return 0 on success, negative - * errno on failure. - */ -int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt); - -/* - * Queue packet for transmitting, return 0 on success, negative errno - * on failure. - */ -int hpsb_send_packet(struct hpsb_packet *packet); - -/* - * Queue packet for transmitting, and block until the transaction - * completes. Return 0 on success, negative errno on failure. - */ -int hpsb_send_packet_and_wait(struct hpsb_packet *packet); - -/* Initiate bus reset on the given host. Returns 1 if bus reset already in - * progress, 0 otherwise. */ -int hpsb_reset_bus(struct hpsb_host *host, int type); - -/* - * The following functions are exported for host driver module usage. All of - * them are safe to use in interrupt contexts, although some are quite - * complicated so you may want to run them in bottom halves instead of calling - * them directly. - */ - -/* Notify a bus reset to the core. Returns 1 if bus reset already in progress, - * 0 otherwise. */ -int hpsb_bus_reset(struct hpsb_host *host); - -/* - * Hand over received selfid packet to the core. Complement check (second - * quadlet is complement of first) is expected to be done and succesful. - */ -void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid); - -/* - * Notify completion of SelfID stage to the core and report new physical ID - * and whether host is root now. - */ -void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot); - -/* - * Notify core of sending a packet. Ackcode is the ack code returned for async - * transmits or ACKX_SEND_ERROR if the transmission failed completely; ACKX_NONE - * for other cases (internal errors that don't justify a panic). Safe to call - * from within a transmit packet routine. - */ -void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet, - int ackcode); - -/* - * Hand over received packet to the core. The contents of data are expected to - * be the full packet but with the CRCs left out (data block follows header - * immediately), with the header (i.e. the first four quadlets) in machine byte - * order and the data block in big endian. *data can be safely overwritten - * after this call. - * - * If the packet is a write request, write_acked is to be set to true if it was - * ack_complete'd already, false otherwise. This arg is ignored for any other - * packet type. - */ -void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size, - int write_acked); - - -/* - * CHARACTER DEVICE DISPATCHING - * - * All ieee1394 character device drivers share the same major number - * (major 171). The 256 minor numbers are allocated to the various - * task-specific interfaces (raw1394, video1394, dv1394, etc) in - * blocks of 16. - * - * The core ieee1394.o module allocates the device number region - * 171:0-255, the various drivers must then cdev_add() their cdev - * objects to handle their respective sub-regions. - * - * Minor device number block allocations: - * - * Block 0 ( 0- 15) raw1394 - * Block 1 ( 16- 31) video1394 - * Block 2 ( 32- 47) dv1394 - * - * Blocks 3-14 free for future allocation - * - * Block 15 (240-255) reserved for drivers under development, etc. - */ - -#define IEEE1394_MAJOR 171 - -#define IEEE1394_MINOR_BLOCK_RAW1394 0 -#define IEEE1394_MINOR_BLOCK_VIDEO1394 1 -#define IEEE1394_MINOR_BLOCK_DV1394 2 -#define IEEE1394_MINOR_BLOCK_AMDTP 3 -#define IEEE1394_MINOR_BLOCK_EXPERIMENTAL 15 - -#define IEEE1394_CORE_DEV MKDEV(IEEE1394_MAJOR, 0) -#define IEEE1394_RAW1394_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_RAW1394 * 16) -#define IEEE1394_VIDEO1394_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_VIDEO1394 * 16) -#define IEEE1394_DV1394_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_DV1394 * 16) -#define IEEE1394_AMDTP_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_AMDTP * 16) -#define IEEE1394_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16) - -/* return the index (within a minor number block) of a file */ -static inline unsigned char ieee1394_file_to_instance(struct file *file) -{ - return file->f_dentry->d_inode->i_cindex; -} - -extern int hpsb_disable_irm; - -/* Our sysfs bus entry */ -extern struct bus_type ieee1394_bus_type; -extern struct class hpsb_host_class; -extern struct class *hpsb_protocol_class; - -#endif /* _IEEE1394_CORE_H */ - |