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1da177e4 LT |
1 | #ifndef _IEEE1394_CORE_H |
2 | #define _IEEE1394_CORE_H | |
3 | ||
de4394f1 SR |
4 | #include <linux/device.h> |
5 | #include <linux/fs.h> | |
6 | #include <linux/list.h> | |
de4394f1 | 7 | #include <linux/types.h> |
9fd5746f | 8 | #include <linux/cdev.h> |
1da177e4 | 9 | #include <asm/atomic.h> |
1da177e4 | 10 | |
de4394f1 SR |
11 | #include "hosts.h" |
12 | #include "ieee1394_types.h" | |
1da177e4 LT |
13 | |
14 | struct hpsb_packet { | |
741854e4 | 15 | /* This struct is basically read-only for hosts with the exception of |
7542e0e6 | 16 | * the data buffer contents and driver_list. */ |
1da177e4 LT |
17 | |
18 | /* This can be used for host driver internal linking. | |
19 | * | |
20 | * NOTE: This must be left in init state when the driver is done | |
21 | * with it (e.g. by using list_del_init()), since the core does | |
22 | * some sanity checks to make sure the packet is not on a | |
23 | * driver_list when free'ing it. */ | |
24 | struct list_head driver_list; | |
25 | ||
741854e4 | 26 | nodeid_t node_id; |
1da177e4 | 27 | |
53c96b41 SR |
28 | /* hpsb_raw = send as-is, do not CRC (but still byte-swap it) */ |
29 | enum { hpsb_async, hpsb_raw } __attribute__((packed)) type; | |
1da177e4 | 30 | |
741854e4 SR |
31 | /* Okay, this is core internal and a no care for hosts. |
32 | * queued = queued for sending | |
33 | * pending = sent, waiting for response | |
34 | * complete = processing completed, successful or not | |
35 | */ | |
36 | enum { | |
37 | hpsb_unused, hpsb_queued, hpsb_pending, hpsb_complete | |
38 | } __attribute__((packed)) state; | |
1da177e4 | 39 | |
6552731a | 40 | /* These are core-internal. */ |
741854e4 | 41 | signed char tlabel; |
07bbeaf1 LT |
42 | signed char ack_code; |
43 | unsigned char tcode; | |
1da177e4 | 44 | |
741854e4 SR |
45 | unsigned expect_response:1; |
46 | unsigned no_waiter:1; | |
1da177e4 | 47 | |
741854e4 SR |
48 | /* Speed to transmit with: 0 = 100Mbps, 1 = 200Mbps, 2 = 400Mbps */ |
49 | unsigned speed_code:2; | |
1da177e4 | 50 | |
741854e4 SR |
51 | struct hpsb_host *host; |
52 | unsigned int generation; | |
1da177e4 LT |
53 | |
54 | atomic_t refcnt; | |
7542e0e6 | 55 | struct list_head queue; |
1da177e4 LT |
56 | |
57 | /* Function (and possible data to pass to it) to call when this | |
58 | * packet is completed. */ | |
59 | void (*complete_routine)(void *); | |
60 | void *complete_data; | |
61 | ||
741854e4 SR |
62 | /* Store jiffies for implementing bus timeouts. */ |
63 | unsigned long sendtime; | |
1da177e4 | 64 | |
6552731a | 65 | /* Core-internal. */ |
7542e0e6 | 66 | size_t allocated_data_size; /* as allocated */ |
6552731a SR |
67 | |
68 | /* Sizes are in bytes. To be set by caller of hpsb_alloc_packet. */ | |
7542e0e6 SR |
69 | size_t data_size; /* as filled in */ |
70 | size_t header_size; /* as filled in, not counting the CRC */ | |
6552731a SR |
71 | |
72 | /* Buffers */ | |
73 | quadlet_t *data; /* can be DMA-mapped */ | |
7542e0e6 SR |
74 | quadlet_t header[5]; |
75 | quadlet_t embedded_data[0]; /* keep as last member */ | |
1da177e4 LT |
76 | }; |
77 | ||
1da177e4 | 78 | void hpsb_set_packet_complete_task(struct hpsb_packet *packet, |
e1d118f1 | 79 | void (*routine)(void *), void *data); |
1da177e4 LT |
80 | static inline struct hpsb_packet *driver_packet(struct list_head *l) |
81 | { | |
82 | return list_entry(l, struct hpsb_packet, driver_list); | |
83 | } | |
1da177e4 | 84 | void abort_timedouts(unsigned long __opaque); |
1da177e4 LT |
85 | struct hpsb_packet *hpsb_alloc_packet(size_t data_size); |
86 | void hpsb_free_packet(struct hpsb_packet *packet); | |
87 | ||
afd6546d SR |
88 | /** |
89 | * get_hpsb_generation - generation counter for the complete 1394 subsystem | |
1da177e4 | 90 | * |
afd6546d SR |
91 | * Generation gets incremented on every change in the subsystem (notably on bus |
92 | * resets). Use the functions, not the variable. | |
1da177e4 LT |
93 | */ |
94 | static inline unsigned int get_hpsb_generation(struct hpsb_host *host) | |
95 | { | |
741854e4 | 96 | return atomic_read(&host->generation); |
1da177e4 LT |
97 | } |
98 | ||
1da177e4 | 99 | int hpsb_send_phy_config(struct hpsb_host *host, int rootid, int gapcnt); |
1da177e4 | 100 | int hpsb_send_packet(struct hpsb_packet *packet); |
1da177e4 | 101 | int hpsb_send_packet_and_wait(struct hpsb_packet *packet); |
1da177e4 | 102 | int hpsb_reset_bus(struct hpsb_host *host, int type); |
3dc5ea9b PP |
103 | int hpsb_read_cycle_timer(struct hpsb_host *host, u32 *cycle_timer, |
104 | u64 *local_time); | |
105 | ||
1da177e4 | 106 | int hpsb_bus_reset(struct hpsb_host *host); |
1da177e4 | 107 | void hpsb_selfid_received(struct hpsb_host *host, quadlet_t sid); |
1da177e4 | 108 | void hpsb_selfid_complete(struct hpsb_host *host, int phyid, int isroot); |
1da177e4 | 109 | void hpsb_packet_sent(struct hpsb_host *host, struct hpsb_packet *packet, |
741854e4 | 110 | int ackcode); |
1da177e4 | 111 | void hpsb_packet_received(struct hpsb_host *host, quadlet_t *data, size_t size, |
741854e4 | 112 | int write_acked); |
1da177e4 | 113 | |
1da177e4 LT |
114 | /* |
115 | * CHARACTER DEVICE DISPATCHING | |
116 | * | |
117 | * All ieee1394 character device drivers share the same major number | |
118 | * (major 171). The 256 minor numbers are allocated to the various | |
119 | * task-specific interfaces (raw1394, video1394, dv1394, etc) in | |
120 | * blocks of 16. | |
121 | * | |
122 | * The core ieee1394.o module allocates the device number region | |
123 | * 171:0-255, the various drivers must then cdev_add() their cdev | |
124 | * objects to handle their respective sub-regions. | |
125 | * | |
126 | * Minor device number block allocations: | |
127 | * | |
128 | * Block 0 ( 0- 15) raw1394 | |
129 | * Block 1 ( 16- 31) video1394 | |
130 | * Block 2 ( 32- 47) dv1394 | |
131 | * | |
132 | * Blocks 3-14 free for future allocation | |
133 | * | |
134 | * Block 15 (240-255) reserved for drivers under development, etc. | |
135 | */ | |
136 | ||
741854e4 | 137 | #define IEEE1394_MAJOR 171 |
1da177e4 | 138 | |
741854e4 SR |
139 | #define IEEE1394_MINOR_BLOCK_RAW1394 0 |
140 | #define IEEE1394_MINOR_BLOCK_VIDEO1394 1 | |
141 | #define IEEE1394_MINOR_BLOCK_DV1394 2 | |
1da177e4 LT |
142 | #define IEEE1394_MINOR_BLOCK_EXPERIMENTAL 15 |
143 | ||
741854e4 | 144 | #define IEEE1394_CORE_DEV MKDEV(IEEE1394_MAJOR, 0) |
e1d118f1 SR |
145 | #define IEEE1394_RAW1394_DEV MKDEV(IEEE1394_MAJOR, \ |
146 | IEEE1394_MINOR_BLOCK_RAW1394 * 16) | |
147 | #define IEEE1394_VIDEO1394_DEV MKDEV(IEEE1394_MAJOR, \ | |
148 | IEEE1394_MINOR_BLOCK_VIDEO1394 * 16) | |
149 | #define IEEE1394_DV1394_DEV MKDEV(IEEE1394_MAJOR, \ | |
150 | IEEE1394_MINOR_BLOCK_DV1394 * 16) | |
151 | #define IEEE1394_EXPERIMENTAL_DEV MKDEV(IEEE1394_MAJOR, \ | |
152 | IEEE1394_MINOR_BLOCK_EXPERIMENTAL * 16) | |
1da177e4 | 153 | |
afd6546d SR |
154 | /** |
155 | * ieee1394_file_to_instance - get the index within a minor number block | |
156 | */ | |
1da177e4 LT |
157 | static inline unsigned char ieee1394_file_to_instance(struct file *file) |
158 | { | |
9fd5746f TT |
159 | int idx = cdev_index(file->f_path.dentry->d_inode); |
160 | if (idx < 0) | |
161 | idx = 0; | |
162 | return idx; | |
1da177e4 LT |
163 | } |
164 | ||
165 | extern int hpsb_disable_irm; | |
166 | ||
167 | /* Our sysfs bus entry */ | |
168 | extern struct bus_type ieee1394_bus_type; | |
169 | extern struct class hpsb_host_class; | |
7e25ab91 | 170 | extern struct class *hpsb_protocol_class; |
1da177e4 LT |
171 | |
172 | #endif /* _IEEE1394_CORE_H */ |