1#ifndef _VME_BRIDGE_H_
2#define _VME_BRIDGE_H_
3
4#define VME_CRCSR_BUF_SIZE (508*1024)
5/*
6 * Resource structures
7 */
8struct vme_master_resource {
9	struct list_head list;
10	struct vme_bridge *parent;
11	/*
12	 * We are likely to need to access the VME bus in interrupt context, so
13	 * protect master routines with a spinlock rather than a mutex.
14	 */
15	spinlock_t lock;
16	int locked;
17	int number;
18	u32 address_attr;
19	u32 cycle_attr;
20	u32 width_attr;
21	struct resource bus_resource;
22	void __iomem *kern_base;
23};
24
25struct vme_slave_resource {
26	struct list_head list;
27	struct vme_bridge *parent;
28	struct mutex mtx;
29	int locked;
30	int number;
31	u32 address_attr;
32	u32 cycle_attr;
33};
34
35struct vme_dma_pattern {
36	u32 pattern;
37	u32 type;
38};
39
40struct vme_dma_pci {
41	dma_addr_t address;
42};
43
44struct vme_dma_vme {
45	unsigned long long address;
46	u32 aspace;
47	u32 cycle;
48	u32 dwidth;
49};
50
51struct vme_dma_list {
52	struct list_head list;
53	struct vme_dma_resource *parent;
54	struct list_head entries;
55	struct mutex mtx;
56};
57
58struct vme_dma_resource {
59	struct list_head list;
60	struct vme_bridge *parent;
61	struct mutex mtx;
62	int locked;
63	int number;
64	struct list_head pending;
65	struct list_head running;
66	u32 route_attr;
67};
68
69struct vme_lm_resource {
70	struct list_head list;
71	struct vme_bridge *parent;
72	struct mutex mtx;
73	int locked;
74	int number;
75	int monitors;
76};
77
78struct vme_bus_error {
79	struct list_head list;
80	unsigned long long address;
81	u32 attributes;
82};
83
84struct vme_callback {
85	void (*func)(int, int, void*);
86	void *priv_data;
87};
88
89struct vme_irq {
90	int count;
91	struct vme_callback callback[255];
92};
93
94/* Allow 16 characters for name (including null character) */
95#define VMENAMSIZ 16
96
97/* This structure stores all the information about one bridge
98 * The structure should be dynamically allocated by the driver and one instance
99 * of the structure should be present for each VME chip present in the system.
100 */
101struct vme_bridge {
102	char name[VMENAMSIZ];
103	int num;
104	struct list_head master_resources;
105	struct list_head slave_resources;
106	struct list_head dma_resources;
107	struct list_head lm_resources;
108
109	struct list_head vme_errors;	/* List for errors generated on VME */
110	struct list_head devices;	/* List of devices on this bridge */
111
112	/* Bridge Info - XXX Move to private structure? */
113	struct device *parent;	/* Parent device (eg. pdev->dev for PCI) */
114	void *driver_priv;	/* Private pointer for the bridge driver */
115	struct list_head bus_list; /* list of VME buses */
116
117	/* Interrupt callbacks */
118	struct vme_irq irq[7];
119	/* Locking for VME irq callback configuration */
120	struct mutex irq_mtx;
121
122	/* Slave Functions */
123	int (*slave_get) (struct vme_slave_resource *, int *,
124		unsigned long long *, unsigned long long *, dma_addr_t *,
125		u32 *, u32 *);
126	int (*slave_set) (struct vme_slave_resource *, int, unsigned long long,
127		unsigned long long, dma_addr_t, u32, u32);
128
129	/* Master Functions */
130	int (*master_get) (struct vme_master_resource *, int *,
131		unsigned long long *, unsigned long long *, u32 *, u32 *,
132		u32 *);
133	int (*master_set) (struct vme_master_resource *, int,
134		unsigned long long, unsigned long long,  u32, u32, u32);
135	ssize_t (*master_read) (struct vme_master_resource *, void *, size_t,
136		loff_t);
137	ssize_t (*master_write) (struct vme_master_resource *, void *, size_t,
138		loff_t);
139	unsigned int (*master_rmw) (struct vme_master_resource *, unsigned int,
140		unsigned int, unsigned int, loff_t);
141
142	/* DMA Functions */
143	int (*dma_list_add) (struct vme_dma_list *, struct vme_dma_attr *,
144		struct vme_dma_attr *, size_t);
145	int (*dma_list_exec) (struct vme_dma_list *);
146	int (*dma_list_empty) (struct vme_dma_list *);
147
148	/* Interrupt Functions */
149	void (*irq_set) (struct vme_bridge *, int, int, int);
150	int (*irq_generate) (struct vme_bridge *, int, int);
151
152	/* Location monitor functions */
153	int (*lm_set) (struct vme_lm_resource *, unsigned long long, u32, u32);
154	int (*lm_get) (struct vme_lm_resource *, unsigned long long *, u32 *,
155		u32 *);
156	int (*lm_attach) (struct vme_lm_resource *, int, void (*callback)(int));
157	int (*lm_detach) (struct vme_lm_resource *, int);
158
159	/* CR/CSR space functions */
160	int (*slot_get) (struct vme_bridge *);
161
162	/* Bridge parent interface */
163	void *(*alloc_consistent)(struct device *dev, size_t size,
164		dma_addr_t *dma);
165	void (*free_consistent)(struct device *dev, size_t size,
166		void *vaddr, dma_addr_t dma);
167};
168
169void vme_irq_handler(struct vme_bridge *, int, int);
170
171int vme_register_bridge(struct vme_bridge *);
172void vme_unregister_bridge(struct vme_bridge *);
173
174#endif /* _VME_BRIDGE_H_ */
175