1 #ifndef IEEE1394_HIGHLEVEL_H
2 #define IEEE1394_HIGHLEVEL_H
4 #include <linux/list.h>
5 #include <linux/spinlock.h>
6 #include <linux/types.h>
10 #include "ieee1394_types.h"
14 /* internal to ieee1394 core */
15 struct hpsb_address_serve
{
16 struct list_head host_list
; /* per host list */
17 struct list_head hl_list
; /* hpsb_highlevel list */
18 const struct hpsb_address_ops
*op
;
19 struct hpsb_host
*host
;
20 u64 start
; /* first address handled, quadlet aligned */
21 u64 end
; /* first address behind, quadlet aligned */
24 /* Only the following structures are of interest to actual highlevel drivers. */
26 struct hpsb_highlevel
{
29 /* Any of the following pointers can legally be NULL. */
31 /* New host initialized. Will also be called during
32 * hpsb_register_highlevel for all hosts already installed. */
33 void (*add_host
)(struct hpsb_host
*host
);
35 /* Host about to be removed. Will also be called during
36 * hpsb_unregister_highlevel once for each host. */
37 void (*remove_host
)(struct hpsb_host
*host
);
39 /* Host experienced bus reset with possible configuration changes.
40 * Note that this one may occur during interrupt/bottom half handling.
41 * You can not expect to be able to do stock hpsb_reads. */
42 void (*host_reset
)(struct hpsb_host
*host
);
44 /* A write request was received on either the FCP_COMMAND (direction =
45 * 0) or the FCP_RESPONSE (direction = 1) register. The cts arg
46 * contains the cts field (first byte of data). */
47 void (*fcp_request
)(struct hpsb_host
*host
, int nodeid
, int direction
,
48 int cts
, u8
*data
, size_t length
);
50 /* These are initialized by the subsystem when the
51 * hpsb_higlevel is registered. */
52 struct list_head hl_list
;
53 struct list_head irq_list
;
54 struct list_head addr_list
;
56 struct list_head host_info_list
;
57 rwlock_t host_info_lock
;
60 struct hpsb_address_ops
{
62 * Null function pointers will make the respective operation complete
63 * with RCODE_TYPE_ERROR. Makes for easy to implement read-only
64 * registers (just leave everything but read NULL).
66 * All functions shall return appropriate IEEE 1394 rcodes.
69 /* These functions have to implement block reads for themselves.
71 * These functions either return a response code or a negative number.
72 * In the first case a response will be generated. In the latter case,
73 * no response will be sent and the driver which handled the request
74 * will send the response itself. */
75 int (*read
)(struct hpsb_host
*host
, int nodeid
, quadlet_t
*buffer
,
76 u64 addr
, size_t length
, u16 flags
);
77 int (*write
)(struct hpsb_host
*host
, int nodeid
, int destid
,
78 quadlet_t
*data
, u64 addr
, size_t length
, u16 flags
);
80 /* Lock transactions: write results of ext_tcode operation into
82 int (*lock
)(struct hpsb_host
*host
, int nodeid
, quadlet_t
*store
,
83 u64 addr
, quadlet_t data
, quadlet_t arg
, int ext_tcode
,
85 int (*lock64
)(struct hpsb_host
*host
, int nodeid
, octlet_t
*store
,
86 u64 addr
, octlet_t data
, octlet_t arg
, int ext_tcode
,
90 void highlevel_add_host(struct hpsb_host
*host
);
91 void highlevel_remove_host(struct hpsb_host
*host
);
92 void highlevel_host_reset(struct hpsb_host
*host
);
93 int highlevel_read(struct hpsb_host
*host
, int nodeid
, void *data
, u64 addr
,
94 unsigned int length
, u16 flags
);
95 int highlevel_write(struct hpsb_host
*host
, int nodeid
, int destid
, void *data
,
96 u64 addr
, unsigned int length
, u16 flags
);
97 int highlevel_lock(struct hpsb_host
*host
, int nodeid
, quadlet_t
*store
,
98 u64 addr
, quadlet_t data
, quadlet_t arg
, int ext_tcode
,
100 int highlevel_lock64(struct hpsb_host
*host
, int nodeid
, octlet_t
*store
,
101 u64 addr
, octlet_t data
, octlet_t arg
, int ext_tcode
,
103 void highlevel_fcp_request(struct hpsb_host
*host
, int nodeid
, int direction
,
104 void *data
, size_t length
);
107 * hpsb_init_highlevel - initialize a struct hpsb_highlevel
109 * This is only necessary if hpsb_get_hostinfo_bykey can be called
110 * before hpsb_register_highlevel.
112 static inline void hpsb_init_highlevel(struct hpsb_highlevel
*hl
)
114 rwlock_init(&hl
->host_info_lock
);
115 INIT_LIST_HEAD(&hl
->host_info_list
);
117 void hpsb_register_highlevel(struct hpsb_highlevel
*hl
);
118 void hpsb_unregister_highlevel(struct hpsb_highlevel
*hl
);
120 u64
hpsb_allocate_and_register_addrspace(struct hpsb_highlevel
*hl
,
121 struct hpsb_host
*host
,
122 const struct hpsb_address_ops
*ops
,
123 u64 size
, u64 alignment
,
125 int hpsb_register_addrspace(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
,
126 const struct hpsb_address_ops
*ops
,
128 int hpsb_unregister_addrspace(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
,
131 void *hpsb_get_hostinfo(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
);
132 void *hpsb_create_hostinfo(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
,
134 void hpsb_destroy_hostinfo(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
);
135 void hpsb_set_hostinfo_key(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
,
137 void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel
*hl
, unsigned long key
);
138 int hpsb_set_hostinfo(struct hpsb_highlevel
*hl
, struct hpsb_host
*host
,
141 #endif /* IEEE1394_HIGHLEVEL_H */
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