sys/arch/rs6000/include/mca_machdep.h

   1 /*      $NetBSD: mca_machdep.h,v 1.10 2005/12/26 19:23:59 perry Exp $   */
   2
   3 /*
   4  * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
   5  * Copyright (c) 1999 Scott D. Telford.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef _RS6000_MCA_MACHDEP_H_
  31 #define _RS6000_MCA_MACHDEP_H_
  32
  33 #define _POWERPC_BUS_DMA_PRIVATE
  34 #include <machine/bus.h>
  35 #include <machine/iocc.h>
  36
  37 /*
  38  * rs6000-specific definitions for MCA autoconfiguration.
  39  */
  40
  41 extern struct powerpc_bus_dma_tag mca_bus_dma_tag;
  42
  43 /* set to 1 if MCA bus is detected */
  44 extern int MCA_system;
  45
  46 int     mca_nmi(void);
  47
  48 /*
  49  * Types provided to machine-independent MCA code.
  50  */
  51 struct x86_mca_chipset {
  52         void * /*struct mca_dma_state*/ ic_dmastate;
  53 };
  54
  55 typedef struct x86_mca_chipset *mca_chipset_tag_t;
  56 typedef int mca_intr_handle_t;
  57
  58 /*
  59  * Functions provided to machine-independent MCA code.
  60  */
  61 struct mcabus_attach_args;
  62
  63 void    mca_attach_hook(struct device *, struct device *,
  64                 struct mcabus_attach_args *);
  65 int     mca_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_dmamap_t *, int);
  66 void    mca_dma_set_ioport(int dma, uint16_t port);
  67 const struct evcnt *mca_intr_evcnt(mca_chipset_tag_t, mca_intr_handle_t);
  68 void    *mca_intr_establish(mca_chipset_tag_t, mca_intr_handle_t,
  69                 int, int (*)(void *), void *);
  70 void    mca_intr_disestablish(mca_chipset_tag_t, void *);
  71 int     mca_conf_read(mca_chipset_tag_t, int, int);
  72 void    mca_conf_write(mca_chipset_tag_t, int, int, int);
  73 void    mca_busprobe(void);
  74
  75 /*
  76  * Flags for DMA. Avoid BUS_DMA_BUS1, we share dmamap routines with ISA and
  77  * that flag is used for different purpose within _isa_dmamap_*().
  78  */
  79 #define MCABUS_DMA_IOPORT               BUS_DMA_BUS2    /* io-port based DMA */
  80 #define MCABUS_DMA_16BIT                BUS_DMA_BUS3    /* 16bit DMA */
  81 #define _MCABUS_DMA_USEDMACTRL          BUS_DMA_BUS4    /* internal flag */
  82
  83 /*
  84  * These two are used to light disk busy LED on PS/2 during disk operations.
  85  */
  86 void    mca_disk_busy(void);
  87 void    mca_disk_unbusy(void);
  88
  89 /* MCA register addresses for PPC */
  90
  91 #define PS2_SYS_CTL_A           0x92    /* PS/2 System Control Port A */
  92 #define MCA_MB_SETUP_REG        0x94    /* Motherboard setup register */
  93 #define MCA_ADAP_SETUP_REG      0x96    /* Adapter setup register */
  94 #define MCA_POS_REG_BASE        (IOCC_POSBASE + 0x100)
  95                                         /* POS registers base address */
  96 #define MCA_POS_REG_SIZE        8       /* POS registers window size */
  97
  98 #define MCA_POS_REG(n)          (IOCC_POSBASE + 0x100+(n))
  99                                         /* POS registers 0-7 */
 100
 101 /* Adapter setup register bits */
 102
 103 #define MCA_ADAP_SET            0x08    /* Adapter setup mode */
 104 #define MCA_ADAP_CHR            0x80    /* Adapter channel reset */
 105
 106 #define MCA_MAX_SLOTS           16      /* max number of slots per bus */
 107 #endif /* _RS6000_MCA_MACHDEP_H_ */