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_ */