1 #ifndef _ALPHA_AGP_BACKEND_H
2 #define _ALPHA_AGP_BACKEND_H 1
3 
4 typedef	union _alpha_agp_mode {
5 	struct {
6 		u32 rate : 3;
7 		u32 reserved0 : 1;
8 		u32 fw : 1;
9 		u32 fourgb : 1;
10 		u32 reserved1 : 2;
11 		u32 enable : 1;
12 		u32 sba : 1;
13 		u32 reserved2 : 14;
14 		u32 rq : 8;
15 	} bits;
16 	u32 lw;
17 } alpha_agp_mode;
18 
19 typedef struct _alpha_agp_info {
20 	enum chipset_type type;
21 	struct pci_controller *hose;
22 	struct {
23 		dma_addr_t bus_base;
24 		unsigned long size;
25 		void *sysdata;
26 	} aperture;
27 	alpha_agp_mode capability;
28 	alpha_agp_mode mode;
29 	void *private;
30 	struct alpha_agp_ops *ops;
31 } alpha_agp_info;
32 
33 struct alpha_agp_ops {
34 	int (*setup)(alpha_agp_info *);
35 	void (*cleanup)(alpha_agp_info *);
36 	int (*configure)(alpha_agp_info *);
37 	int (*bind)(alpha_agp_info *, off_t, agp_memory *);
38 	int (*unbind)(alpha_agp_info *, off_t, agp_memory *);
39 	unsigned long (*translate)(alpha_agp_info *, dma_addr_t);
40 };
41 
42 
43 #endif /* _ALPHA_AGP_BACKEND_H */
44