Lift-and-tweak from the i386 port (near-complete rewrite), providing
the ISA DMA stuff expected by machine-independent code.
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thorpej
parent
eeb19dd33c
commit
b51b6b7c04
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@ -1,36 +1,60 @@
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/* $NetBSD: isa_machdep.h,v 1.2 1998/06/12 21:07:44 tv Exp $ */
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/* $NetBSD: isa_machdep.h,v 1.3 1998/07/08 04:54:47 thorpej Exp $ */
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/*-
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* Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ARM32_ISA_MACHDEP_H_
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#define _ARM32_ISA_MACHDEP_H_
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#include <machine/bus.h>
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#include <dev/isa/isadmavar.h>
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/*
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* Types provided to machine-independent ISA code.
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*/
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typedef void *isa_chipset_tag_t;
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#define isa_dmainit(a,b,c,d) /* XXX - needs to change for MI ISADMA */
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struct arm32_isa_chipset {
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struct isa_dma_state ic_dmastate;
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};
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typedef struct arm32_isa_chipset *isa_chipset_tag_t;
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struct device; /* XXX */
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struct isabus_attach_args; /* XXX */
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/*
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* ISA DMA bounce buffers.
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* XXX should be made partially machine- and bus-mapping-independent.
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*
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* DMA_BOUNCE is the number of pages of low-addressed physical memory
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* to acquire for ISA bounce buffers.
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*
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* isaphysmem is the location of those bounce buffers. (They are currently
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* assumed to be contiguous.
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*/
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#ifndef DMA_BOUNCE
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#define DMA_BOUNCE 8 /* one buffer per channel */
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#endif
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#define DMA_LARGE_BUFFER_SIZE 65536 /* 64K */
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extern vm_offset_t isaphysmem;
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/*
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* Functions provided to machine-independent ISA code.
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*/
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@ -40,15 +64,97 @@ void *isa_intr_establish __P((isa_chipset_tag_t ic, int irq, int type,
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int level, int (*ih_fun)(void *), void *ih_arg));
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void isa_intr_disestablish __P((isa_chipset_tag_t ic, void *handler));
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#define isa_dmainit(ic, bst, dmat, d) \
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_isa_dmainit(&(ic)->ic_dmastate, (bst), (dmat), (d))
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#define isa_dmacascade(ic, c) \
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_isa_dmacascade(&(ic)->ic_dmastate, (c))
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#define isa_dmamap_create(ic, c, s, f) \
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_isa_dmamap_create(&(ic)->ic_dmastate, (c), (s), (f))
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#define isa_dmamap_destroy(ic, c) \
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_isa_dmamap_destroy(&(ic)->ic_dmastate, (c))
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#define isa_dmastart(ic, c, a, n, p, f, bf) \
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_isa_dmastart(&(ic)->ic_dmastate, (c), (a), (n), (p), (f), (bf))
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#define isa_dmaabort(ic, c) \
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_isa_dmaabort(&(ic)->ic_dmastate, (c))
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#define isa_dmacount(ic, c) \
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_isa_dmacount(&(ic)->ic_dmastate, (c))
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#define isa_dmafinished(ic, c) \
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_isa_dmafinished(&(ic)->ic_dmastate, (c))
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#define isa_dmadone(ic, c) \
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_isa_dmadone(&(ic)->ic_dmastate, (c))
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#define isa_dmafreeze(ic) \
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_isa_dmafreeze(&(ic)->ic_dmastate)
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#define isa_dmathaw(ic) \
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_isa_dmathaw(&(ic)->ic_dmastate)
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#define isa_dmamem_alloc(ic, c, s, ap, f) \
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_isa_dmamem_alloc(&(ic)->ic_dmastate, (c), (s), (ap), (f))
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#define isa_dmamem_free(ic, c, a, s) \
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_isa_dmamem_free(&(ic)->ic_dmastate, (c), (a), (s))
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#define isa_dmamem_map(ic, c, a, s, kp, f) \
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_isa_dmamem_map(&(ic)->ic_dmastate, (c), (a), (s), (kp), (f))
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#define isa_dmamem_unmap(ic, c, k, s) \
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_isa_dmamem_unmap(&(ic)->ic_dmastate, (c), (k), (s))
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#define isa_dmamem_mmap(ic, c, a, s, o, p, f) \
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_isa_dmamem_mmap(&(ic)->ic_dmastate, (c), (a), (s), (o), (p), (f))
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#define isa_drq_isfree(ic, c) \
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_isa_drq_isfree(&(ic)->ic_dmastate, (c))
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#define isa_malloc(ic, c, s, p, f) \
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_isa_malloc(&(ic)->ic_dmastate, (c), (s), (p), (f))
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#define isa_free(a, p) \
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_isa_free((a), (p))
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#define isa_mappage(m, o, p) \
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_isa_mappage((m), (o), (p))
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/*
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* ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
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* BY PORTABLE CODE.
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*/
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extern struct arm32_bus_dma_tag isa_bus_dma_tag;
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/*
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* Cookie used by ISA DMA. A pointer to one of these is stashed in
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* the DMA map.
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*/
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struct arm32_isa_dma_cookie {
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int id_flags; /* flags; see below */
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/*
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* Information about the original buffer used during
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* DMA map syncs. Note that origbuflen is only used
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* for ID_BUFTYPE_LINEAR.
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*/
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void *id_origbuf; /* pointer to orig buffer if
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bouncing */
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bus_size_t id_origbuflen; /* ...and size */
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int id_buftype; /* type of buffer */
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void *id_bouncebuf; /* pointer to the bounce buffer */
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bus_size_t id_bouncebuflen; /* ...and size */
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int id_nbouncesegs; /* number of valid bounce segs */
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bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer
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physical memory segments */
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};
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/* id_flags */
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#define ID_MIGHT_NEED_BOUNCE 0x01 /* map could need bounce buffers */
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#define ID_HAS_BOUNCE 0x02 /* map currently has bounce buffers */
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#define ID_IS_BOUNCING 0x04 /* map is bouncing current xfer */
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/* id_buftype */
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#define ID_BUFTYPE_INVALID 0
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#define ID_BUFTYPE_LINEAR 1
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#define ID_BUFTYPE_MBUF 2
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#define ID_BUFTYPE_UIO 3
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#define ID_BUFTYPE_RAW 4
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/* bus space tags */
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extern struct bus_space isa_io_bs_tag;
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extern struct bus_space isa_mem_bs_tag;
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/* ISA chipset */
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extern struct arm32_isa_chipset isa_chipset_tag;
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/* for pccons.c */
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#define MONO_BASE 0x3B4
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#define MONO_BUF 0x000B0000
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@ -60,6 +166,7 @@ extern struct bus_space isa_mem_bs_tag;
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void isa_init __P((vm_offset_t, vm_offset_t));
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void isa_io_init __P((vm_offset_t, vm_offset_t));
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void isa_dma_init __P((void));
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vm_offset_t isa_io_data_vaddr __P((void));
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vm_offset_t isa_mem_data_vaddr __P((void));
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