#ifndef _IEEE1394_CORE_H
#define _IEEE1394_CORE_H
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/types.h>
#include <linux/cdev.h>
#include <asm/atomic.h>
#include "hosts.h"
#include "ieee1394_types.h"
struct hpsb_packet {
/* This struct is basically read-only for hosts with the exception of
* the data buffer contents and driver_list. */
/* 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;
/* hpsb_raw = send as-is, do not CRC (but still byte-swap it) */
enum { hpsb_async, 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;
struct hpsb_host *host;
unsigned int generation;
atomic_t refcnt;
struct list_head queue;
/* Function (and possible data to pass to it) to call when this
* packet is completed. */
void (*complete_routine)(void *);
void *complete_data;
/* Store jiffies for implementing bus timeouts. */
unsigned long sendtime;
/* Core-internal. */
size_t allocated_data_size; /* as allocated */
/* Sizes are in bytes. To be set by caller of hpsb_alloc_packet. */
size_t data_size; /* as filled in */
size_t header_size; /* as filled in, not counting the CRC */
/* Buffers */
quadlet_t *data; /* can be DMA-mapped */
quadlet_t header[5];
quadlet_t embedded_data[0]; /* keep as last member */
};
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);
/**
* get_hpsb_generation - generation counter for the complete 1394 subsystem
*
* Generation gets incremented on every change in the subsystem (notably on bus
* resets). Use the functions, not the variable.
*/
static inline unsigned int get_hpsb_generation(struct hpsb_host *host)
{
return atomic_read(&host->generation);
}
int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt);
int hpsb_send_packet(struct hpsb_packet *packet);
int hpsb_send_packet_and_wait(struct hpsb_packet *packet);
int hpsb_reset_bus(struct hpsb_host *host, int type);
int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
u64 *local_time);
int hpsb_bus_reset(struct hpsb_host *host);
void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid);
void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot);
void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet,
int ackcode);
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_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_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, \
IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16)
/**
* ieee1394_file_to_instance - get the index within a minor number block
*/
static inline unsigned char ieee1394_file_to_instance(struct file *file)
{
int idx = cdev_index(file->f_path.dentry->d_inode);
if (idx < 0)
idx = 0;
return idx;
}
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 */
