/*      $NetBSD: bus_funcs.h,v 1.3 2023/12/07 16:56:09 thorpej Exp $    */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

/*
* Copyright (c) 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
*  Software Distribution Coordinator  or  [email protected]
*  School of Computer Science
*  Carnegie Mellon University
*  Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/

#ifndef _ATARI_BUS_FUNCS_H_
#define _ATARI_BUS_FUNCS_H_

/* machine dependent utility functions */
void bootm_init(vaddr_t, void *, vsize_t);
void atari_bus_space_arena_init(paddr_t, paddr_t);
int atari_bus_space_alloc_physmem(paddr_t, paddr_t);

/* functions for machine independent bus_space(9) API */
int     bus_space_alloc(bus_space_tag_t, bus_addr_t, bus_addr_t, bus_size_t,
           bus_size_t, bus_size_t, int, bus_addr_t *, bus_space_handle_t *);
int     bus_space_map(bus_space_tag_t, bus_addr_t, bus_size_t, int,
           bus_space_handle_t *);
void    bus_space_unmap(bus_space_tag_t, bus_space_handle_t, bus_size_t);
int     bus_space_subregion(bus_space_tag_t, bus_space_handle_t, bus_size_t,
           bus_size_t, bus_space_handle_t *);

/*
* Tag allocation
*/
bus_space_tag_t         beb_alloc_bus_space_tag(bus_space_tag_t);
bus_space_tag_t         leb_alloc_bus_space_tag(bus_space_tag_t);

/*
* XXX
*/
bus_space_tag_t mb_alloc_bus_space_tag(void);
void            mb_free_bus_space_tag(bus_space_tag_t);

/*
* Utility macros; INTERNAL USE ONLY.
*/
#define __abs_c(a,b)            __CONCAT(a,b)
#define __abs_opname(op,size)   __abs_c(__abs_c(__abs_c(abs_,op),_),size)

#define __abs_p(sz, t, h, o)                                            \
       (*(t)->__abs_opname(p,sz))(t, h, o)
#define __abs_rs(sz, t, h, o)                                           \
       (*(t)->__abs_opname(r,sz))(t, h, o)
#define __abs_rss(sz, t, h, o)                                          \
       (*(t)->__abs_opname(rs,sz))(t, h, o)
#define __abs_ws(sz, t, h, o, v)                                        \
       (*(t)->__abs_opname(w,sz))(t, h, o, v)
#define __abs_wss(sz, t, h, o, v)                                       \
       (*(t)->__abs_opname(ws,sz))(t, h, o, v)
#define __abs_nonsingle(type, sz, t, h, o, a, c)                        \
       (*(t)->__abs_opname(type,sz))(t, h, o, a, c)
#define __abs_set(type, sz, t, h, o, v, c)                              \
       (*(t)->__abs_opname(type,sz))(t, h, o, v, c)

   /*
    * No swaps needed and no other trickery, so it should be possible
    * to shortcut these to memcpy() directly [ leo 19990107 ]
    */
#if 0
   #define     __abs_copy(sz, t, h1, o1, h2, o2, cnt)                  \
       (*(t)->__abs_opname(c,sz))(t, h1, o1, h2, o2, cnt)
#else
   #define     __abs_copy(sz, t, h1, o1, h2, o2, cnt) do {             \
                   memcpy((void*)(h2 + o2), (void *)(h1 + o1), sz * cnt);  \
                   (void)t;                                                \
               } while (0)
#endif


/*
* Check accesibility of the location for various sized bus accesses
*/
#define bus_space_peek_1(t, h, o)       __abs_p(1,(t),(h),(o))
#define bus_space_peek_2(t, h, o)       __abs_p(2,(t),(h),(o))
#define bus_space_peek_4(t, h, o)       __abs_p(4,(t),(h),(o))
#define bus_space_peek_8(t, h, o)       __abs_p(8,(t),(h),(o))

/*
* Bus read (single) operations.
*/
#define bus_space_read_1(t, h, o)       __abs_rs(1,(t),(h),(o))
#define bus_space_read_2(t, h, o)       __abs_rs(2,(t),(h),(o))
#define bus_space_read_4(t, h, o)       __abs_rs(4,(t),(h),(o))
#define bus_space_read_8(t, h, o)       __abs_rs(8,(t),(h),(o))

/*
* Bus read (single) stream operations.
*/
#define bus_space_read_stream_1(t, h, o)        __abs_rss(1,(t),(h),(o))
#define bus_space_read_stream_2(t, h, o)        __abs_rss(2,(t),(h),(o))
#define bus_space_read_stream_4(t, h, o)        __abs_rss(4,(t),(h),(o))
#define bus_space_read_stream_8(t, h, o)        __abs_rss(8,(t),(h),(o))

/*
* Bus read multiple operations.
*/
#define bus_space_read_multi_1(t, h, o, a, c)                           \
       __abs_nonsingle(rm,1,(t),(h),(o),(a),(c))
#define bus_space_read_multi_2(t, h, o, a, c)                           \
       __abs_nonsingle(rm,2,(t),(h),(o),(a),(c))
#define bus_space_read_multi_4(t, h, o, a, c)                           \
       __abs_nonsingle(rm,4,(t),(h),(o),(a),(c))
#define bus_space_read_multi_8(t, h, o, a, c)                           \
       __abs_nonsingle(rm,8,(t),(h),(o),(a),(c))

/*
* Bus read multiple stream operations.
*/
#define bus_space_read_multi_stream_1(t, h, o, a, c)                    \
       __abs_nonsingle(rms,1,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_2(t, h, o, a, c)                    \
       __abs_nonsingle(rms,2,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_4(t, h, o, a, c)                    \
       __abs_nonsingle(rms,4,(t),(h),(o),(a),(c))
#define bus_space_read_multi_stream_8(t, h, o, a, c)                    \
       __abs_nonsingle(rms,8,(t),(h),(o),(a),(c))


/*
* Bus read region operations.
*/
#define bus_space_read_region_1(t, h, o, a, c)                          \
       __abs_nonsingle(rr,1,(t),(h),(o),(a),(c))
#define bus_space_read_region_2(t, h, o, a, c)                          \
       __abs_nonsingle(rr,2,(t),(h),(o),(a),(c))
#define bus_space_read_region_4(t, h, o, a, c)                          \
       __abs_nonsingle(rr,4,(t),(h),(o),(a),(c))
#define bus_space_read_region_8(t, h, o, a, c)                          \
       __abs_nonsingle(rr,8,(t),(h),(o),(a),(c))

/*
* Bus read region stream operations.
*/
#define bus_space_read_region_stream_1(t, h, o, a, c)                   \
       __abs_nonsingle(rrs,1,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_2(t, h, o, a, c)                   \
       __abs_nonsingle(rrs,2,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_4(t, h, o, a, c)                   \
       __abs_nonsingle(rrs,4,(t),(h),(o),(a),(c))
#define bus_space_read_region_stream_8(t, h, o, a, c)                   \
       __abs_nonsingle(rrs,8,(t),(h),(o),(a),(c))

/*
* Bus write (single) operations.
*/
#define bus_space_write_1(t, h, o, v)   __abs_ws(1,(t),(h),(o),(v))
#define bus_space_write_2(t, h, o, v)   __abs_ws(2,(t),(h),(o),(v))
#define bus_space_write_4(t, h, o, v)   __abs_ws(4,(t),(h),(o),(v))
#define bus_space_write_8(t, h, o, v)   __abs_ws(8,(t),(h),(o),(v))

/*
* Bus write (single) stream operations.
*/
#define bus_space_write_stream_1(t, h, o, v)    __abs_wss(1,(t),(h),(o),(v))
#define bus_space_write_stream_2(t, h, o, v)    __abs_wss(2,(t),(h),(o),(v))
#define bus_space_write_stream_4(t, h, o, v)    __abs_wss(4,(t),(h),(o),(v))
#define bus_space_write_stream_8(t, h, o, v)    __abs_wss(8,(t),(h),(o),(v))


/*
* Bus write multiple operations.
*/
#define bus_space_write_multi_1(t, h, o, a, c)                          \
       __abs_nonsingle(wm,1,(t),(h),(o),(a),(c))
#define bus_space_write_multi_2(t, h, o, a, c)                          \
       __abs_nonsingle(wm,2,(t),(h),(o),(a),(c))
#define bus_space_write_multi_4(t, h, o, a, c)                          \
       __abs_nonsingle(wm,4,(t),(h),(o),(a),(c))
#define bus_space_write_multi_8(t, h, o, a, c)                          \
       __abs_nonsingle(wm,8,(t),(h),(o),(a),(c))

/*
* Bus write multiple stream operations.
*/
#define bus_space_write_multi_stream_1(t, h, o, a, c)                   \
       __abs_nonsingle(wms,1,(t),(h),(o),(a),(c))
#define bus_space_write_multi_stream_2(t, h, o, a, c)                   \
       __abs_nonsingle(wms,2,(t),(h),(o),(a),(c))
#define bus_space_write_multi_stream_4(t, h, o, a, c)                   \
       __abs_nonsingle(wms,4,(t),(h),(o),(a),(c))
#define bus_space_write_multi_stream_8(t, h, o, a, c)                   \
       __abs_nonsingle(wms,8,(t),(h),(o),(a),(c))


/*
* Bus write region operations.
*/
#define bus_space_write_region_1(t, h, o, a, c)                         \
       __abs_nonsingle(wr,1,(t),(h),(o),(a),(c))
#define bus_space_write_region_2(t, h, o, a, c)                         \
       __abs_nonsingle(wr,2,(t),(h),(o),(a),(c))
#define bus_space_write_region_4(t, h, o, a, c)                         \
       __abs_nonsingle(wr,4,(t),(h),(o),(a),(c))
#define bus_space_write_region_8(t, h, o, a, c)                         \
       __abs_nonsingle(wr,8,(t),(h),(o),(a),(c))

/*
* Bus write region stream operations.
*/
#define bus_space_write_region_stream_1(t, h, o, a, c)                  \
       __abs_nonsingle(wrs,1,(t),(h),(o),(a),(c))
#define bus_space_write_region_stream_2(t, h, o, a, c)                  \
       __abs_nonsingle(wrs,2,(t),(h),(o),(a),(c))
#define bus_space_write_region_stream_4(t, h, o, a, c)                  \
       __abs_nonsingle(wrs,4,(t),(h),(o),(a),(c))
#define bus_space_write_region_stream_8(t, h, o, a, c)                  \
       __abs_nonsingle(wrs,8,(t),(h),(o),(a),(c))


/*
* Set multiple operations.
*/
#define bus_space_set_multi_1(t, h, o, v, c)                            \
       __abs_set(sm,1,(t),(h),(o),(v),(c))
#define bus_space_set_multi_2(t, h, o, v, c)                            \
       __abs_set(sm,2,(t),(h),(o),(v),(c))
#define bus_space_set_multi_4(t, h, o, v, c)                            \
       __abs_set(sm,4,(t),(h),(o),(v),(c))
#define bus_space_set_multi_8(t, h, o, v, c)                            \
       __abs_set(sm,8,(t),(h),(o),(v),(c))


/*
* Set region operations.
*/
#define bus_space_set_region_1(t, h, o, v, c)                           \
       __abs_set(sr,1,(t),(h),(o),(v),(c))
#define bus_space_set_region_2(t, h, o, v, c)                           \
       __abs_set(sr,2,(t),(h),(o),(v),(c))
#define bus_space_set_region_4(t, h, o, v, c)                           \
       __abs_set(sr,4,(t),(h),(o),(v),(c))
#define bus_space_set_region_8(t, h, o, v, c)                           \
       __abs_set(sr,8,(t),(h),(o),(v),(c))


/*
* Copy region operations.
*/
#define bus_space_copy_region_1(t, h1, o1, h2, o2, c)                   \
       __abs_copy(1, (t), (h1), (o1), (h2), (o2), (c))
#define bus_space_copy_region_2(t, h1, o1, h2, o2, c)                   \
       __abs_copy(2, (t), (h1), (o1), (h2), (o2), (c))
#define bus_space_copy_region_4(t, h1, o1, h2, o2, c)                   \
       __abs_copy(4, (t), (h1), (o1), (h2), (o2), (c))
#define bus_space_copy_region_8(t, h1, o1, h2, o2, c)                   \
       __abs_copy(8, (t), (h1), (o1), (h2), (o2), (c))

/*
*      void *bus_space_vaddr(bus_space_tag_t, bus_space_handle_t);
*
* Get the kernel virtual address for the mapped bus space.
* Only allowed for regions mapped with BUS_SPACE_MAP_LINEAR.
*  (XXX not enforced)
*/
#define bus_space_vaddr(t, h)   ((void)(t), (void *)(h))

/*
*      paddr_t bus_space_mmap(bus_space_tag_t t, bus_addr_t base,
*          off_t offset, int prot, int flags);
*
* Mmap an area of bus space.
*/

paddr_t bus_space_mmap(bus_space_tag_t, bus_addr_t, off_t,
           int, int);

#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)

/*
* Bus read/write barrier methods.
*
*      void bus_space_barrier(bus_space_tag_t tag,
*          bus_space_handle_t bsh, bus_size_t offset,
*          bus_size_t len, int flags);
*
* Note: the Atari does not currently require barriers, but we must
* provide the flags to MI code.
*/
#define bus_space_barrier(t, h, o, l, f)        \
       ((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))

/* Forwards needed by prototypes below. */
struct mbuf;
struct uio;

#define bus_dmamap_create(t, s, n, m, b, f, p)                  \
       (*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
#define bus_dmamap_destroy(t, p)                                \
       (*(t)->_dmamap_destroy)((t), (p))
#define bus_dmamap_load(t, m, b, s, p, f)                       \
       (*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
#define bus_dmamap_load_mbuf(t, m, b, f)                        \
       (*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
#define bus_dmamap_load_uio(t, m, u, f)                         \
       (*(t)->_dmamap_load_uio)((t), (m), (u), (f))
#define bus_dmamap_load_raw(t, m, sg, n, s, f)                  \
       (*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
#define bus_dmamap_unload(t, p)                                 \
       (*(t)->_dmamap_unload)((t), (p))
#define bus_dmamap_sync(t, p, o, l, ops)                        \
       (void)((t)->_dmamap_sync ?                              \
           (*(t)->_dmamap_sync)((t), (p), (o), (l), (ops)) : (void)0)

#define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
#define bus_dmatag_destroy(t)

#ifdef _ATARI_BUS_DMA_PRIVATE
int     _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t,
           bus_size_t, int, bus_dmamap_t *);
void    _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
int     _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *,
           bus_size_t, struct proc *, int);
int     _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t, struct mbuf *, int);
int     _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t, struct uio *, int);
int     _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t,
           bus_dma_segment_t *, int, bus_size_t, int);
void    _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
void    _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
           bus_size_t, int);
#endif /* _ATARI_BUS_DMA_PRIVATE */

int     bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size,
           bus_size_t alignment, bus_size_t boundary,
           bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags);
int     bus_dmamem_alloc_range(bus_dma_tag_t tag, bus_size_t size,
           bus_size_t alignment, bus_size_t boundary,
           bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
           paddr_t low, paddr_t high);
void    bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs);
int     bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs,
           int nsegs, size_t size, void **kvap, int flags);
void    bus_dmamem_unmap(bus_dma_tag_t tag, void *kva, size_t size);
paddr_t bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs,
           int nsegs, off_t off, int prot, int flags);

#endif /* _ATARI_BUS_FUNCS_H_ */

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