2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1998 Doug Rabson
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifndef _ISA_ISAVAR_H_
32 #define _ISA_ISAVAR_H_
36 typedef void isa_config_cb(void *arg, struct isa_config *config, int enable);
39 #include <isa/pnpvar.h>
44 * ISA devices are partially ordered. This is to ensure that hardwired
45 * devices the BIOS tells us are there appear first, then speculative
46 * devices that are sensitive to the probe order, then devices that
47 * are hinted to be there, then the most flexible devices which support
48 * the ISA bus PNP standard.
50 #define ISA_ORDER_PNPBIOS 10 /* plug-and-play BIOS inflexible hardware */
51 #define ISA_ORDER_SENSITIVE 20 /* legacy sensitive hardware */
52 #define ISA_ORDER_SPECULATIVE 30 /* legacy non-sensitive hardware */
53 #define ISA_ORDER_PNP 40 /* plug-and-play flexible hardware */
56 * Limits on resources that we can manage
64 * Limits on resources the hardware can actually handle
66 #define ISA_PNP_NPORT 8
67 #define ISA_PNP_NMEM 4
68 #define ISA_PNP_NIRQ 2
69 #define ISA_PNP_NDRQ 2
71 #define ISADMA_READ 0x00100000
72 #define ISADMA_WRITE 0
73 #define ISADMA_RAW 0x00080000
75 * Plug and play cards can support a range of resource
76 * configurations. This structure is used by the isapnp parser to
77 * inform the isa bus about the resource possibilities of the
78 * device. Each different alternative should be supplied by calling
89 struct isa_range ic_mem[ISA_NMEM];
90 struct isa_range ic_port[ISA_NPORT];
91 u_int32_t ic_irqmask[ISA_NIRQ];
92 u_int32_t ic_drqmask[ISA_NDRQ];
100 * Used to build lists of IDs and description strings for PnP drivers.
107 enum isa_device_ivars {
109 ISA_IVAR_PORT_0 = ISA_IVAR_PORT,
112 ISA_IVAR_PORTSIZE_0 = ISA_IVAR_PORTSIZE,
115 ISA_IVAR_MADDR_0 = ISA_IVAR_MADDR,
118 ISA_IVAR_MEMSIZE_0 = ISA_IVAR_MEMSIZE,
121 ISA_IVAR_IRQ_0 = ISA_IVAR_IRQ,
124 ISA_IVAR_DRQ_0 = ISA_IVAR_DRQ,
133 ISA_IVAR_PNPBIOS_HANDLE
137 * ISA_IVAR_CONFIGATTR bits
139 #define ISACFGATTR_CANDISABLE (1 << 0) /* can be disabled */
140 #define ISACFGATTR_DYNAMIC (1 << 1) /* dynamic configuration */
141 #define ISACFGATTR_HINTS (1 << 3) /* source of config is hints */
143 #define ISA_PNP_DESCR "E:pnpid;D:#"
144 #define ISA_PNP_INFO(t) \
145 MODULE_PNP_INFO(ISA_PNP_DESCR, isa, t, t, nitems(t) - 1); \
148 * Simplified accessors for isa devices
150 #define ISA_ACCESSOR(var, ivar, type) \
151 __BUS_ACCESSOR(isa, var, ISA, ivar, type)
153 ISA_ACCESSOR(port, PORT, int)
154 ISA_ACCESSOR(portsize, PORTSIZE, int)
155 ISA_ACCESSOR(irq, IRQ, int)
156 ISA_ACCESSOR(drq, DRQ, int)
157 ISA_ACCESSOR(maddr, MADDR, int)
158 ISA_ACCESSOR(msize, MEMSIZE, int)
159 ISA_ACCESSOR(vendorid, VENDORID, int)
160 ISA_ACCESSOR(serial, SERIAL, int)
161 ISA_ACCESSOR(logicalid, LOGICALID, int)
162 ISA_ACCESSOR(compatid, COMPATID, int)
163 ISA_ACCESSOR(configattr, CONFIGATTR, int)
164 ISA_ACCESSOR(pnp_csn, PNP_CSN, int)
165 ISA_ACCESSOR(pnp_ldn, PNP_LDN, int)
166 ISA_ACCESSOR(pnpbios_handle, PNPBIOS_HANDLE, int)
168 /* Device class for ISA bridges. */
169 extern devclass_t isab_devclass;
171 extern intrmask_t isa_irq_pending(void);
172 extern void isa_probe_children(device_t dev);
174 void isa_dmacascade(int chan);
175 void isa_dmadone(int flags, caddr_t addr, int nbytes, int chan);
176 int isa_dma_init(int chan, u_int bouncebufsize, int flag);
177 void isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan);
178 int isa_dma_acquire(int chan);
179 void isa_dma_release(int chan);
180 int isa_dmastatus(int chan);
181 int isa_dmastop(int chan);
182 int isa_dmatc(int chan);
184 #define isa_dmainit(chan, size) do { \
185 if (isa_dma_init(chan, size, M_NOWAIT)) \
186 printf("WARNING: isa_dma_init(%d, %ju) failed\n", \
187 (int)(chan), (uintmax_t)(size)); \
190 void isa_hinted_child(device_t parent, const char *name, int unit);
191 void isa_hint_device_unit(device_t bus, device_t child, const char *name,
193 int isab_attach(device_t dev);
197 #endif /* !_ISA_ISAVAR_H_ */