/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ALPHA_AGP_BACKEND_H
#define _ALPHA_AGP_BACKEND_H 1

typedef union _alpha_agp_mode {
        struct {
                u32 rate : 3;
                u32 reserved0 : 1;
                u32 fw : 1;
                u32 fourgb : 1;
                u32 reserved1 : 2;
                u32 enable : 1;
                u32 sba : 1;
                u32 reserved2 : 14;
                u32 rq : 8;
        } bits;
        u32 lw;
} alpha_agp_mode;

typedef struct _alpha_agp_info {
        struct pci_controller *hose;
        struct {
                dma_addr_t bus_base;
                unsigned long size;
                void *sysdata;
        } aperture;
        alpha_agp_mode capability;
        alpha_agp_mode mode;
        void *private;
        struct alpha_agp_ops *ops;
} alpha_agp_info;

struct alpha_agp_ops {
        int (*setup)(alpha_agp_info *);
        void (*cleanup)(alpha_agp_info *);
        int (*configure)(alpha_agp_info *);
        int (*bind)(alpha_agp_info *, off_t, struct agp_memory *);
        int (*unbind)(alpha_agp_info *, off_t, struct agp_memory *);
        unsigned long (*translate)(alpha_agp_info *, dma_addr_t);
};


#endif /* _ALPHA_AGP_BACKEND_H */