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
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8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
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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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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 1.54 2005/01/06 01:42:28 imp Exp $
29 * $DragonFly: src/sys/dev/netif/ar/if_ar_isa.c,v 1.4 2005/02/08 14:31:16 joerg 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.....
48 #include <sys/param.h>
49 #include <sys/systm.h>
50 #include <sys/kernel.h>
51 #include <sys/module.h>
53 #include <machine/bus.h>
54 #include <machine/resource.h>
55 #include <machine/bus_pio.h>
56 #include <machine/bus_memio.h>
59 #include <bus/isa/isavar.h>
62 #include <dev/netif/ic_layer/hd64570.h>
63 #include <dev/netif/ar/if_arregs.h>
73 static int ar_isa_probe (device_t);
74 static int ar_isa_attach (device_t);
76 static struct isa_pnp_id ar_ids[] = {
80 static device_method_t ar_methods[] = {
81 DEVMETHOD(device_probe, ar_isa_probe),
82 DEVMETHOD(device_attach, ar_isa_attach),
83 DEVMETHOD(device_detach, ar_detach),
87 static driver_t ar_isa_driver = {
90 sizeof (struct ar_hardc)
93 DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0);
96 * Probe to see if it is there.
97 * Get its information and fill it in.
100 ar_isa_probe(device_t device)
103 u_long membase, memsize;
106 error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
107 if(error == ENXIO || error == 0)
110 hc = (struct ar_hardc *)device_get_softc(device);
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 if((ar_inb(hc, AR_ID_5) != '5') ||
123 (ar_inb(hc, AR_ID_7) != '7') ||
124 (ar_inb(hc, AR_ID_0) != '0')) {
125 ar_deallocate_resources(device);
128 membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
129 memsize = ar_inb(hc, AR_REV);
130 memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
131 memsize *= ARC_WIN_SIZ;
132 error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
133 ar_deallocate_resources(device);
139 * Malloc memory for the softc structures.
140 * Reset the card to put it in a known state.
141 * Register the ports on the adapter.
142 * Fill in the info for each port.
143 * Attach each port to sppp and bpf.
146 ar_isa_attach(device_t device)
152 hc = (struct ar_hardc *)device_get_softc(device);
153 if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
156 tmp = ar_inb(hc, AR_BMI);
157 hc->bustype = tmp & AR_BUS_MSK;
158 hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
159 hc->memsize = 1 << hc->memsize;
161 hc->interface[0] = (tmp & AR_IFACE_MSK);
162 hc->interface[1] = hc->interface[0];
163 hc->interface[2] = hc->interface[0];
164 hc->interface[3] = hc->interface[0];
165 tmp = ar_inb(hc, AR_REV);
166 hc->revision = tmp & AR_REV_MSK;
167 hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
168 hc->winsize *= ARC_WIN_SIZ;
169 hc->winmsk = hc->winsize - 1;
170 hc->numports = ar_inb(hc, AR_PNUM);
171 hc->handshake = ar_inb(hc, AR_HNDSH);
173 if(ar_allocate_memory(device, 0, hc->winsize))
176 hc->mem_start = rman_get_virtual(hc->res_memory);
177 hc->mem_end = hc->mem_start + hc->winsize;
178 hc->cunit = device_get_unit(device);
180 switch(hc->interface[0]) {
181 case AR_IFACE_EIA_232:
182 printf("ar%d: The EIA 232 interface is not supported.\n",
184 ar_deallocate_resources(device);
188 case AR_IFACE_EIA_530:
189 printf("ar%d: WARNING: The EIA 530 interface is untested.\n",
195 printf("ar%d: WARNING: The COMBO interface is untested.\n",
201 * Do a little sanity check.
203 if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
204 ar_deallocate_resources(device);
208 if(ar_allocate_irq(device, 0, 1))
211 if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
212 ar_deallocate_resources(device);
217 if(ar_attach(device)) {
218 ar_deallocate_resources(device);
226 ********************************* END ************************************