sys/arch/arm/include/isa_machdep.h

   1 /*      $NetBSD: isa_machdep.h,v 1.6 2009/08/19 14:35:45 dyoung Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef _ARM32_ISA_MACHDEP_H_
  34 #define _ARM32_ISA_MACHDEP_H_
  35
  36 #include <machine/bus.h>
  37 #include <dev/isa/isadmavar.h>
  38
  39 /*
  40  * Types provided to machine-independent ISA code.
  41  */
  42 struct arm32_isa_chipset {
  43         struct isa_dma_state ic_dmastate;
  44 };
  45
  46 typedef struct arm32_isa_chipset *isa_chipset_tag_t;
  47
  48 struct device;                  /* XXX */
  49 struct isabus_attach_args;      /* XXX */
  50
  51 /*
  52  * Functions provided to machine-independent ISA code.
  53  */
  54 void    isa_attach_hook(struct device *, struct device *,
  55             struct isabus_attach_args *);
  56 void    isa_detach_hook(isa_chipset_tag_t, device_t);
  57 const struct evcnt *isa_intr_evcnt(isa_chipset_tag_t ic, int irq);
  58 void    *isa_intr_establish(isa_chipset_tag_t ic, int irq, int type,
  59             int level, int (*ih_fun)(void *), void *ih_arg);
  60 void    isa_intr_disestablish(isa_chipset_tag_t ic, void *handler);
  61
  62 #define isa_dmainit(ic, bst, dmat, d)                                   \
  63         _isa_dmainit(&(ic)->ic_dmastate, (bst), (dmat), (d))
  64 #define isa_dmadestroy(ic)                                              \
  65         _isa_dmadestroy(&(ic)->ic_dmastate)
  66 #define isa_dmacascade(ic, c)                                           \
  67         _isa_dmacascade(&(ic)->ic_dmastate, (c))
  68 #define isa_dmamaxsize(ic, c)                                           \
  69         _isa_dmamaxsize(&(ic)->ic_dmastate, (c))
  70 #define isa_dmamap_create(ic, c, s, f)                                  \
  71         _isa_dmamap_create(&(ic)->ic_dmastate, (c), (s), (f))
  72 #define isa_dmamap_destroy(ic, c)                                       \
  73         _isa_dmamap_destroy(&(ic)->ic_dmastate, (c))
  74 #define isa_dmastart(ic, c, a, n, p, f, bf)                             \
  75         _isa_dmastart(&(ic)->ic_dmastate, (c), (a), (n), (p), (f), (bf))
  76 #define isa_dmaabort(ic, c)                                             \
  77         _isa_dmaabort(&(ic)->ic_dmastate, (c))
  78 #define isa_dmacount(ic, c)                                             \
  79         _isa_dmacount(&(ic)->ic_dmastate, (c))
  80 #define isa_dmafinished(ic, c)                                          \
  81         _isa_dmafinished(&(ic)->ic_dmastate, (c))
  82 #define isa_dmadone(ic, c)                                              \
  83         _isa_dmadone(&(ic)->ic_dmastate, (c))
  84 #define isa_dmafreeze(ic)                                               \
  85         _isa_dmafreeze(&(ic)->ic_dmastate)
  86 #define isa_dmathaw(ic)                                                 \
  87         _isa_dmathaw(&(ic)->ic_dmastate)
  88 #define isa_dmamem_alloc(ic, c, s, ap, f)                               \
  89         _isa_dmamem_alloc(&(ic)->ic_dmastate, (c), (s), (ap), (f))
  90 #define isa_dmamem_free(ic, c, a, s)                                    \
  91         _isa_dmamem_free(&(ic)->ic_dmastate, (c), (a), (s))
  92 #define isa_dmamem_map(ic, c, a, s, kp, f)                              \
  93         _isa_dmamem_map(&(ic)->ic_dmastate, (c), (a), (s), (kp), (f))
  94 #define isa_dmamem_unmap(ic, c, k, s)                                   \
  95         _isa_dmamem_unmap(&(ic)->ic_dmastate, (c), (k), (s))
  96 #define isa_dmamem_mmap(ic, c, a, s, o, p, f)                           \
  97         _isa_dmamem_mmap(&(ic)->ic_dmastate, (c), (a), (s), (o), (p), (f))
  98 #define isa_drq_alloc(ic, c)                                            \
  99         _isa_drq_alloc(&(ic)->ic_dmastate, c)
 100 #define isa_drq_free(ic, c)                                             \
 101         _isa_drq_free(&(ic)->ic_dmastate, c)
 102 #define isa_drq_isfree(ic, c)                                           \
 103         _isa_drq_isfree(&(ic)->ic_dmastate, (c))
 104 #define isa_malloc(ic, c, s, p, f)                                      \
 105         _isa_malloc(&(ic)->ic_dmastate, (c), (s), (p), (f))
 106 #define isa_free(a, p)                                                  \
 107         _isa_free((a), (p))
 108 #define isa_mappage(m, o, p)                                            \
 109         _isa_mappage((m), (o), (p))
 110
 111 /*
 112  * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED
 113  * BY PORTABLE CODE.
 114  */
 115
 116 extern struct arm32_bus_dma_tag isa_bus_dma_tag;
 117
 118 /*
 119  * Cookie used by ISA DMA.  A pointer to one of these is stashed in
 120  * the DMA map.
 121  */
 122 struct arm32_isa_dma_cookie {
 123         int     id_flags;               /* flags; see below */
 124
 125         /*
 126          * Information about the original buffer used during
 127          * DMA map syncs.  Note that origbuflen is only used
 128          * for ID_BUFTYPE_LINEAR.
 129          */
 130         void    *id_origbuf;            /* pointer to orig buffer if
 131                                            bouncing */
 132         bus_size_t id_origbuflen;       /* ...and size */
 133         int     id_buftype;             /* type of buffer */
 134
 135         void    *id_bouncebuf;          /* pointer to the bounce buffer */
 136         bus_size_t id_bouncebuflen;     /* ...and size */
 137         int     id_nbouncesegs;         /* number of valid bounce segs */
 138         bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer
 139                                                physical memory segments */
 140 };
 141
 142 /* id_flags */
 143 #define ID_MIGHT_NEED_BOUNCE    0x01    /* map could need bounce buffers */
 144 #define ID_HAS_BOUNCE           0x02    /* map currently has bounce buffers */
 145 #define ID_IS_BOUNCING          0x04    /* map is bouncing current xfer */
 146
 147 /* id_buftype */
 148 #define ID_BUFTYPE_INVALID      0
 149 #define ID_BUFTYPE_LINEAR       1
 150 #define ID_BUFTYPE_MBUF         2
 151 #define ID_BUFTYPE_UIO          3
 152 #define ID_BUFTYPE_RAW          4
 153
 154 /* bus space tags */
 155 extern struct bus_space isa_io_bs_tag;
 156 extern struct bus_space isa_mem_bs_tag;
 157
 158 /* ISA chipset */
 159 extern struct arm32_isa_chipset isa_chipset_tag;
 160
 161 /* for pccons.c */
 162 #define MONO_BASE           0x3B4
 163 #define MONO_BUF            0x000B0000
 164 #define CGA_BASE            0x3D4
 165 #define CGA_BUF             0x000B8000
 166 #define VGA_BUF             0xA0000
 167 #define VGA_BUF_LEN         (0xBFFFF - 0xA0000)
 168
 169 void    isa_init(vaddr_t, vaddr_t);
 170 void    isa_io_init(vaddr_t, vaddr_t);
 171 void    isa_dma_init(void);
 172 vaddr_t isa_io_data_vaddr(void);
 173 vaddr_t isa_mem_data_vaddr(void);
 174 int isa_intr_alloc(isa_chipset_tag_t ic, int mask, int type, int *irq);
 175 void    isa_intr_init(void);
 176
 177 /*
 178  * Miscellanous functions.
 179  */
 180 void sysbeep(int, int);         /* beep with the system speaker */
 181 void isa_fillw(u_int val, void *addr, size_t len);
 182
 183 #endif  /* _ARM32_ISA_MACHDEP_H_ XXX */