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/* $NetBSD: bus_defs.h,v 1.2 2019/09/23 16:17:57 skrll Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2001 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 Charles M. Hannum. All rights reserved.
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef _SPARC_BUS_DEFS_H_
#define _SPARC_BUS_DEFS_H_
/*
* Bus address and size types
*/
typedef u_long bus_space_handle_t;
#define PRIxBSH "lx"
typedef uint64_t bus_addr_t;
typedef u_long bus_size_t;
#define PRIxBUSADDR PRIx64
#define PRIxBUSSIZE "lx"
#define PRIuBUSSIZE "lu"
#define SPARC_BUS_SPACE 0
/* bus_addr_t is extended to 64-bits and has the iospace encoded in it */
#define BUS_ADDR_IOSPACE(x) ((x)>>32)
#define BUS_ADDR_PADDR(x) ((x)&0xffffffff)
#define BUS_ADDR(io, pa) \
((((uint64_t)(uint32_t)(io))<<32) | (uint32_t)(pa))
#define __BUS_SPACE_HAS_STREAM_METHODS 1
/*
* Access methods for bus resources and address space.
*/
typedef struct sparc_bus_space_tag *bus_space_tag_t;
struct sparc_bus_space_tag {
void *cookie;
bus_space_tag_t parent;
/*
* Windows onto the parent bus that this tag maps. If ranges
* is non-NULL, the address will be translated, and recursively
* mapped via the parent tag.
*/
struct openprom_range *ranges;
int nranges;
int (*sparc_bus_map)(
bus_space_tag_t,
bus_addr_t,
bus_size_t,
int, /*flags*/
vaddr_t, /*preferred vaddr*/
bus_space_handle_t *);
int (*sparc_bus_unmap)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t);
int (*sparc_bus_subregion)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t, /*offset*/
bus_size_t, /*size*/
bus_space_handle_t *);
void (*sparc_bus_barrier)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t, /*offset*/
bus_size_t, /*size*/
int); /*flags*/
paddr_t (*sparc_bus_mmap)(
bus_space_tag_t,
bus_addr_t,
off_t,
int, /*prot*/
int); /*flags*/
void *(*sparc_intr_establish)(
bus_space_tag_t,
int, /*bus-specific intr*/
int, /*device class level,
see machine/intr.h*/
int (*)(void *), /*handler*/
void *, /*handler arg*/
void (*)(void)); /*optional fast vector*/
uint8_t (*sparc_read_1)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset);
uint16_t (*sparc_read_2)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset);
uint32_t (*sparc_read_4)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset);
uint64_t (*sparc_read_8)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset);
void (*sparc_write_1)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset,
uint8_t value);
void (*sparc_write_2)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset,
uint16_t value);
void (*sparc_write_4)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset,
uint32_t value);
void (*sparc_write_8)(
bus_space_tag_t space,
bus_space_handle_t handle,
bus_size_t offset,
uint64_t value);
};
/* flags for bus space map functions */
#define BUS_SPACE_MAP_BUS1 0x0100 /* placeholders for bus functions... */
#define BUS_SPACE_MAP_BUS2 0x0200
#define BUS_SPACE_MAP_BUS3 0x0400
#define BUS_SPACE_MAP_LARGE 0x0800 /* map outside IODEV range */
/* flags for bus_space_barrier() */
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
/*
* Flags used in various bus DMA methods.
*/
#define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
#define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
#define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
#define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
#define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */
#define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */
#define BUS_DMA_BUS2 0x020
#define BUS_DMA_BUS3 0x040
#define BUS_DMA_BUS4 0x080
#define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
#define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
#define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */
/* For devices that have a 24-bit address space */
#define BUS_DMA_24BIT BUS_DMA_BUS1
/* Internal flag: current DVMA address is equal to the KVA buffer address */
#define _BUS_DMA_DIRECTMAP BUS_DMA_BUS2
/* Forwards needed by prototypes below. */
struct mbuf;
struct uio;
/*
* Operations performed by bus_dmamap_sync().
*/
#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */
typedef struct sparc_bus_dma_tag *bus_dma_tag_t;
typedef struct sparc_bus_dmamap *bus_dmamap_t;
#define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0)
/*
* bus_dma_segment_t
*
* Describes a single contiguous DMA transaction. Values
* are suitable for programming into DMA registers.
*/
struct sparc_bus_dma_segment {
bus_addr_t ds_addr; /* DVMA address */
bus_size_t ds_len; /* length of transfer */
bus_size_t _ds_sgsize; /* size of allocated DVMA segment */
void *_ds_mlist; /* page list when dmamem_alloc'ed */
vaddr_t _ds_va; /* VA when dmamem_map'ed */
};
typedef struct sparc_bus_dma_segment bus_dma_segment_t;
/*
* bus_dma_tag_t
*
* A machine-dependent opaque type describing the implementation of
* DMA for a given bus.
*/
struct sparc_bus_dma_tag {
void *_cookie; /* cookie used in the guts */
/*
* DMA mapping methods.
*/
int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int,
bus_size_t, bus_size_t, int, bus_dmamap_t *);
void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int);
int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t,
struct uio *, int);
int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
bus_addr_t, bus_size_t, int);
/*
* DMA memory utility functions.
*/
int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t,
bus_size_t, bus_dma_segment_t *, int, int *, int);
void (*_dmamem_free)(bus_dma_tag_t,
bus_dma_segment_t *, int);
int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *,
int, size_t, void **, int);
void (*_dmamem_unmap)(bus_dma_tag_t, void *, size_t);
paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *,
int, off_t, int, int);
};
/*
* bus_dmamap_t
*
* Describes a DMA mapping.
*/
struct sparc_bus_dmamap {
/*
* PRIVATE MEMBERS: not for use by machine-independent code.
*/
bus_size_t _dm_size; /* largest DMA transfer mappable */
int _dm_segcnt; /* number of segs this map can map */
bus_size_t _dm_maxmaxsegsz; /* fixed largest possible segment */
bus_size_t _dm_boundary; /* don't cross this */
int _dm_flags; /* misc. flags */
void *_dm_cookie; /* cookie for bus-specific functions */
u_long _dm_align; /* DVMA alignment; must be a
multiple of the page size */
u_long _dm_ex_start; /* constraints on DVMA map */
u_long _dm_ex_end; /* allocations; used by the VME bus
driver and by the IOMMU driver
when mapping 24-bit devices */
/*
* PUBLIC MEMBERS: these are used by machine-independent code.
*/
bus_size_t dm_maxsegsz; /* largest possible segment */
bus_size_t dm_mapsize; /* size of the mapping */
int dm_nsegs; /* # valid segments in mapping */
bus_dma_segment_t dm_segs[1]; /* segments; variable length */
};
#endif /* _SPARC_BUS_DEFS_H_ */
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