isavar.h revision 66840
1/*- 2 * Copyright (c) 1998 Doug Rabson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/isa/isavar.h 66840 2000-10-09 00:40:17Z msmith $ 27 */ 28 29#ifndef _ISA_ISAVAR_H_ 30#define _ISA_ISAVAR_H_ 31 32struct isa_config; 33struct isa_pnp_id; 34typedef void isa_config_cb(void *arg, struct isa_config *config, int enable); 35 36#include "isa_if.h" 37#include <isa/pnpvar.h> 38 39#ifdef _KERNEL 40 41/* 42 * ISA devices are partially ordered to ensure that devices which are 43 * sensitive to other driver probe routines are probed first. Plug and 44 * Play devices are added after devices with speculative probes so that 45 * the legacy hardware can claim resources allowing the Plug and Play 46 * hardware to choose different resources. 47 */ 48#define ISA_ORDER_SENSITIVE 0 /* legacy sensitive hardware */ 49#define ISA_ORDER_SPECULATIVE 1 /* legacy non-sensitive hardware */ 50#define ISA_ORDER_PNP 2 /* plug-and-play hardware */ 51 52/* 53 * Limits on resources that we can manage 54 */ 55#define ISA_NPORT 50 56#define ISA_NMEM 50 57#define ISA_NIRQ 50 58#define ISA_NDRQ 50 59 60/* 61 * Limits on resources the hardware can actually handle 62 */ 63#define ISA_PNP_NPORT 8 64#define ISA_PNP_NMEM 4 65#define ISA_PNP_NIRQ 2 66#define ISA_PNP_NDRQ 2 67 68#define ISADMA_READ 0x00100000 69#define ISADMA_WRITE 0 70#define ISADMA_RAW 0x00080000 71/* 72 * Plug and play cards can support a range of resource 73 * configurations. This structure is used by the isapnp parser to 74 * inform the isa bus about the resource possibilities of the 75 * device. Each different alternative should be supplied by calling 76 * ISA_ADD_CONFIG(). 77 */ 78struct isa_range { 79 u_int32_t ir_start; 80 u_int32_t ir_end; 81 u_int32_t ir_size; 82 u_int32_t ir_align; 83}; 84 85struct isa_config { 86 struct isa_range ic_mem[ISA_NMEM]; 87 struct isa_range ic_port[ISA_NPORT]; 88 u_int32_t ic_irqmask[ISA_NIRQ]; 89 u_int32_t ic_drqmask[ISA_NDRQ]; 90 int ic_nmem; 91 int ic_nport; 92 int ic_nirq; 93 int ic_ndrq; 94}; 95 96/* 97 * Used to build lists of IDs and description strings for PnP drivers. 98 */ 99struct isa_pnp_id { 100 u_int32_t ip_id; 101 const char *ip_desc; 102}; 103 104enum isa_device_ivars { 105 ISA_IVAR_PORT, 106 ISA_IVAR_PORT_0 = ISA_IVAR_PORT, 107 ISA_IVAR_PORT_1, 108 ISA_IVAR_PORTSIZE, 109 ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE, 110 ISA_IVAR_PORTSIZE_1, 111 ISA_IVAR_MADDR, 112 ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR, 113 ISA_IVAR_MADDR_1, 114 ISA_IVAR_MSIZE, 115 ISA_IVAR_MSIZE_0 = ISA_IVAR_MSIZE, 116 ISA_IVAR_MSIZE_1, 117 ISA_IVAR_IRQ, 118 ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ, 119 ISA_IVAR_IRQ_1, 120 ISA_IVAR_DRQ, 121 ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ, 122 ISA_IVAR_DRQ_1, 123 ISA_IVAR_VENDORID, 124 ISA_IVAR_SERIAL, 125 ISA_IVAR_LOGICALID, 126 ISA_IVAR_COMPATID 127}; 128 129/* 130 * Simplified accessors for isa devices 131 */ 132#define ISA_ACCESSOR(A, B, T) \ 133 \ 134static __inline T isa_get_ ## A(device_t dev) \ 135{ \ 136 uintptr_t v; \ 137 BUS_READ_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, &v); \ 138 return (T) v; \ 139} \ 140 \ 141static __inline void isa_set_ ## A(device_t dev, T t) \ 142{ \ 143 u_long v = (u_long) t; \ 144 BUS_WRITE_IVAR(device_get_parent(dev), dev, ISA_IVAR_ ## B, v); \ 145} 146 147ISA_ACCESSOR(port, PORT, int) 148ISA_ACCESSOR(portsize, PORTSIZE, int) 149ISA_ACCESSOR(irq, IRQ, int) 150ISA_ACCESSOR(drq, DRQ, int) 151ISA_ACCESSOR(maddr, MADDR, int) 152ISA_ACCESSOR(msize, MSIZE, int) 153ISA_ACCESSOR(vendorid, VENDORID, int) 154ISA_ACCESSOR(serial, SERIAL, int) 155ISA_ACCESSOR(logicalid, LOGICALID, int) 156ISA_ACCESSOR(compatid, COMPATID, int) 157 158extern intrmask_t isa_irq_pending(void); 159extern intrmask_t isa_irq_mask(void); 160#ifdef __i386__ 161extern void isa_wrap_old_drivers(void); 162#endif 163extern void isa_probe_children(device_t dev); 164 165extern void isa_dmacascade __P((int chan)); 166extern void isa_dmadone __P((int flags, caddr_t addr, int nbytes, int chan)); 167extern void isa_dmainit __P((int chan, u_int bouncebufsize)); 168extern void isa_dmastart __P((int flags, caddr_t addr, u_int nbytes, int chan)); 169extern int isa_dma_acquire __P((int chan)); 170extern void isa_dma_release __P((int chan)); 171extern int isa_dmastatus __P((int chan)); 172extern int isa_dmastop __P((int chan)); 173 174#endif /* _KERNEL */ 175 176#endif /* !_ISA_ISAVAR_H_ */ 177