2 * Copyright (c) 1995 - 2001 John Hay. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the author nor the names of any co-contributors
13 * may be used to endorse or promote products derived from this software
14 * without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY John Hay ``AS IS'' AND
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL John Hay 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
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28 * $FreeBSD: src/sys/dev/ar/if_ar_isa.c,v 1.49.2.1 2002/06/17 15:10:57 jhay Exp $
29 * $DragonFly: src/sys/dev/netif/ar/if_ar_isa.c,v 1.2 2003/06/17 04:28:22 dillon Exp $
33 * Programming assumptions and other issues.
35 * The descriptors of a DMA channel will fit in a 16K memory window.
37 * The buffers of a transmit DMA channel will fit in a 16K memory window.
39 * Only the ISA bus cards with X.21 and V.35 is tested.
41 * When interface is going up, handshaking is set and it is only cleared
42 * when the interface is down'ed.
44 * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
45 * internal/external clock, etc.....
49 #include <sys/param.h>
50 #include <sys/systm.h>
51 #include <sys/kernel.h>
52 #include <sys/module.h>
54 #include <machine/bus.h>
55 #include <machine/resource.h>
56 #include <machine/bus_pio.h>
57 #include <machine/bus_memio.h>
60 #include <isa/isavar.h>
63 #include <dev/ic/hd64570.h>
64 #include <dev/ar/if_arregs.h>
74 static int ar_isa_probe (device_t);
75 static int ar_isa_attach (device_t);
77 static struct isa_pnp_id ar_ids[] = {
81 static device_method_t ar_methods[] = {
82 DEVMETHOD(device_probe, ar_isa_probe),
83 DEVMETHOD(device_attach, ar_isa_attach),
84 DEVMETHOD(device_detach, ar_detach),
88 static driver_t ar_isa_driver = {
91 sizeof (struct ar_hardc)
94 devclass_t ar_devclass;
96 DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0);
99 * Probe to see if it is there.
100 * Get its information and fill it in.
103 ar_isa_probe(device_t device)
106 u_long membase, memsize, port_start, port_count;
108 error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
109 if(error == ENXIO || error == 0)
112 if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) {
117 * Now see if the card is realy there.
119 * XXX For now I just check the undocumented ports
120 * for "570". We will probably have to do more checking.
122 error = bus_get_resource(device, SYS_RES_IOPORT, 0, &port_start,
125 if((inb(port_start + AR_ID_5) != '5') ||
126 (inb(port_start + AR_ID_7) != '7') ||
127 (inb(port_start + AR_ID_0) != '0')) {
128 ar_deallocate_resources(device);
131 membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
132 memsize = inb(port_start + AR_REV);
133 memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
134 memsize *= ARC_WIN_SIZ;
135 error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
136 ar_deallocate_resources(device);
142 * Malloc memory for the softc structures.
143 * Reset the card to put it in a known state.
144 * Register the ports on the adapter.
145 * Fill in the info for each port.
146 * Attach each port to sppp and bpf.
149 ar_isa_attach(device_t device)
155 hc = (struct ar_hardc *)device_get_softc(device);
156 if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
158 hc->bt = rman_get_bustag(hc->res_ioport);
159 hc->bh = rman_get_bushandle(hc->res_ioport);
161 hc->iobase = rman_get_start(hc->res_ioport);
163 tmp = inb(hc->iobase + AR_BMI);
164 hc->bustype = tmp & AR_BUS_MSK;
165 hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
166 hc->memsize = 1 << hc->memsize;
168 hc->interface[0] = (tmp & AR_IFACE_MSK);
169 hc->interface[1] = hc->interface[0];
170 hc->interface[2] = hc->interface[0];
171 hc->interface[3] = hc->interface[0];
172 tmp = inb(hc->iobase + AR_REV);
173 hc->revision = tmp & AR_REV_MSK;
174 hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
175 hc->winsize *= ARC_WIN_SIZ;
176 hc->winmsk = hc->winsize - 1;
177 hc->numports = inb(hc->iobase + AR_PNUM);
178 hc->handshake = inb(hc->iobase + AR_HNDSH);
180 if(ar_allocate_memory(device, 0, hc->winsize))
183 hc->mem_start = rman_get_virtual(hc->res_memory);
184 hc->mem_end = hc->mem_start + hc->winsize;
185 hc->cunit = device_get_unit(device);
187 switch(hc->interface[0]) {
188 case AR_IFACE_EIA_232:
189 printf("ar%d: The EIA 232 interface is not supported.\n",
191 ar_deallocate_resources(device);
195 case AR_IFACE_EIA_530:
196 printf("ar%d: WARNING: The EIA 530 interface is untested.\n",
202 printf("ar%d: WARNING: The COMBO interface is untested.\n",
208 * Do a little sanity check.
210 if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
211 ar_deallocate_resources(device);
215 if(ar_allocate_irq(device, 0, 1))
218 if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
219 ar_deallocate_resources(device);
224 if(ar_attach(device)) {
225 ar_deallocate_resources(device);
239 ********************************* END ************************************