d88cf589cb
isa_dmamap_create() calls to their open/close entrypoints. This worked with some luck, but broke on i386 when _bus_dmamap_create started to allocate bounce buffers upfront, since memory below 16M may well not be available when the sound devices is opened for the Nth time. To fix this, create a new simple interface, isa_drq_alloc/isa_drq_free, wrappers around already existing bitmask macros. These are expected to be used before an isa_dmamap_create call, and after an isa_dmamap_destroy call, respectively. For the sb and ad1848 drivers, they're deferred until open/close. All isa_dmamap_create calls can now use BUS_DMA_ALLOCNOW and be done at attach time.
188 lines
6.8 KiB
C
188 lines
6.8 KiB
C
/* $NetBSD: isa_machdep.h,v 1.4 2003/05/09 23:51:26 fvdl 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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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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* Functions provided to machine-independent ISA code.
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*/
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void isa_attach_hook(struct device *, struct device *,
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struct isabus_attach_args *);
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const struct evcnt *isa_intr_evcnt(isa_chipset_tag_t ic, int irq);
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void *isa_intr_establish(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(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_dmamaxsize(ic, c) \
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_isa_dmamaxsize(&(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_alloc(ic, c) \
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_isa_drq_alloc(&(ic)->ic_dmastate, c)
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#define isa_drq_free(ic, c) \
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_isa_drq_free(&(ic)->ic_dmastate, c)
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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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#define CGA_BASE 0x3D4
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#define CGA_BUF 0x000B8000
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#define VGA_BUF 0xA0000
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#define VGA_BUF_LEN (0xBFFFF - 0xA0000)
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void isa_init(vaddr_t, vaddr_t);
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void isa_io_init(vaddr_t, vaddr_t);
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void isa_dma_init(void);
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vaddr_t isa_io_data_vaddr(void);
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vaddr_t isa_mem_data_vaddr(void);
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int isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq);
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void isa_intr_init(void);
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/*
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* Miscellanous functions.
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*/
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void sysbeep(int, int); /* beep with the system speaker */
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void isa_fillw(u_int val, void *addr, size_t len);
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#endif /* _ARM32_ISA_MACHDEP_H_ XXX */
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