#include <linux/device.h>
#include <linux/fs.h>
#include <linux/list.h>
-#include <linux/skbuff.h>
#include <linux/types.h>
#include <asm/atomic.h>
struct hpsb_packet {
/* This struct is basically read-only for hosts with the exception of
- * the data buffer contents and xnext - see below. */
+ * the data buffer contents and driver_list. */
/* This can be used for host driver internal linking.
*
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;
+ /* 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
hpsb_unused, hpsb_queued, hpsb_pending, hpsb_complete
} __attribute__((packed)) state;
- /* These are core internal. */
+ /* These are core-internal. */
signed char tlabel;
signed char ack_code;
unsigned char tcode;
/* 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;
+ 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;
- /* 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];
+ /* 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 */
};
-/* 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).
+/**
+ * get_hpsb_generation - generation counter for the complete 1394 subsystem
*
- * Use the functions, not the variable.
+ * 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);
}
-/*
- * 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);
+int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer,
+ u64 *local_time);
-/*
- * 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 successful.
- */
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
*
#define IEEE1394_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, \
IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16)
-/* return the index (within a minor number block) of a file */
+/**
+ * ieee1394_file_to_instance - get the index within a minor number block
+ */
static inline unsigned char ieee1394_file_to_instance(struct file *file)
{
return file->f_path.dentry->d_inode->i_cindex;
git.samba.org / sfrench / cifs-2.6.git / blobdiff