sys/arch/powerpc/pic/picvar.h

   1 /*      $NetBSD: picvar.h,v 1.5 2008/04/29 06:53:02 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2007 Michael Lorenz
   5  * 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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: picvar.h,v 1.5 2008/04/29 06:53:02 martin Exp $");
  31
  32 #ifndef PIC_VAR_H
  33 #define PIC_VAR_H
  34
  35 #include <machine/intr.h>
  36
  37 struct pic_ops {
  38         void *pic_cookie;       /* private stuff / hardware info */
  39         int pic_intrbase;       /* global number of the 1st IRQ we handle */
  40         int pic_numintrs;       /* how many IRQs do we handle? */
  41         /*
  42          * all functions that take an IRQ number as argument need a local
  43          * interrupt number
  44          */
  45         void (*pic_enable_irq)(struct pic_ops *, int, int);
  46         void (*pic_reenable_irq)(struct pic_ops *, int, int);
  47         void (*pic_disable_irq)(struct pic_ops *, int);
  48         int (*pic_get_irq)(struct pic_ops *, int); /* PIC_GET_* */
  49         void (*pic_ack_irq)(struct pic_ops *, int); /* IRQ numbner */
  50         /* IRQ number, type, priority */
  51         void (*pic_establish_irq)(struct pic_ops *, int, int, int);
  52         /* finish setup after CPUs are attached */
  53         void (*pic_finish_setup)(struct pic_ops *);
  54         char pic_name[16];
  55 };
  56
  57 struct intr_source {
  58         int is_type;
  59         int is_level;
  60         int is_hwirq;
  61         int is_mask;
  62         struct intrhand *is_hand;
  63         struct pic_ops *is_pic;
  64         struct evcnt is_ev;
  65         char is_source[16];
  66 };
  67
  68 #define OPENPIC_MAX_ISUS        4
  69 #define OPENPIC_FLAG_DIST       (1<<0)
  70 #define OPENPIC_FLAG_LE         (1<<1)
  71
  72 struct openpic_ops {
  73         struct pic_ops pic;
  74         uint32_t flags;
  75         int nrofisus;
  76         volatile unsigned char **isu;
  77         uint8_t *irq_per;
  78 };
  79
  80 struct i8259_ops {
  81         struct pic_ops pic;
  82         uint32_t pending_events;
  83         uint32_t enable_mask;
  84         uint32_t irqs;
  85 };
  86
  87 /*
  88  * add a pic, fill in pic_intrbase, return pic_intrbase on success,
  89  * -1 otherwise
  90  * the PIC must be initialized and ready for use
  91  */
  92 int     pic_add(struct pic_ops *);
  93
  94 void    pic_do_pending_int(void);
  95 void    pic_enable_irq(int);
  96 void    pic_disable_irq(int);
  97 int     pic_handle_intr(void *);
  98 void    pic_mark_pending(int);
  99 void    pic_ext_intr(void);
 100 void    pic_init(void);
 101 const char *intr_typename(int);
 102 void    dummy_pic_establish_intr(struct pic_ops *, int, int, int);
 103
 104 /* this is called after attaching CPUs so PICs can setup interrupt routing */
 105 void pic_finish_setup(void);
 106
 107 /* address, enable passthrough */
 108 #define PIC_IVR_IBM     0
 109 #define PIC_IVR_MOT     1
 110 #define PIC_GET_IRQ     0
 111 #define PIC_GET_RECHECK 1
 112 struct pic_ops *setup_openpic(void *, int);
 113 struct pic_ops *setup_distributed_openpic(void *, int, void **, int *);
 114 struct pic_ops *setup_prepivr(int);
 115 struct pic_ops *setup_i8259(void);
 116 struct pic_ops *setup_mpcpic(void *);
 117 void mpcpic_reserv16(void);
 118
 119 /* i8259 common decls */
 120 void i8259_initialize(void);
 121 void i8259_enable_irq(struct pic_ops *, int, int);
 122 void i8259_disable_irq(struct pic_ops *, int);
 123 void i8259_ack_irq(struct pic_ops *, int);
 124 int i8259_get_irq(struct pic_ops *, int);
 125
 126 /* openpic common decls */
 127 void opic_finish_setup(struct pic_ops *pic);
 128 void openpic_set_priority(int cpu, int pri);
 129 int opic_get_irq(struct pic_ops *pic, int mode);
 130 void opic_ack_irq(struct pic_ops *pic, int irq);
 131
 132 /* IPI handler */
 133 int cpuintr(void *);
 134 /* XXX - may need to be PIC specific */
 135 #define IPI_VECTOR 64
 136
 137 #endif /* PIC_VAR_H */