1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ALPHA_AGP_BACKEND_H
3 #define _ALPHA_AGP_BACKEND_H 1
4 
5 typedef	union _alpha_agp_mode {
6 	struct {
7 		u32 rate : 3;
8 		u32 reserved0 : 1;
9 		u32 fw : 1;
10 		u32 fourgb : 1;
11 		u32 reserved1 : 2;
12 		u32 enable : 1;
13 		u32 sba : 1;
14 		u32 reserved2 : 14;
15 		u32 rq : 8;
16 	} bits;
17 	u32 lw;
18 } alpha_agp_mode;
19 
20 typedef struct _alpha_agp_info {
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, struct agp_memory *);
38 	int (*unbind)(alpha_agp_info *, off_t, struct agp_memory *);
39 	unsigned long (*translate)(alpha_agp_info *, dma_addr_t);
40 };
41 
42 
43 #endif /* _ALPHA_AGP_BACKEND_H */
44