2 * Copyright (c) 1995 - 2001 John Hay. All rights reserved.
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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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14 * without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY John Hay ``AS IS'' AND
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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 $
32 * Programming assumptions and other issues.
34 * The descriptors of a DMA channel will fit in a 16K memory window.
36 * The buffers of a transmit DMA channel will fit in a 16K memory window.
38 * Only the ISA bus cards with X.21 and V.35 is tested.
40 * When interface is going up, handshaking is set and it is only cleared
41 * when the interface is down'ed.
43 * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
44 * internal/external clock, etc.....
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/module.h>
54 #include <bus/isa/isavar.h>
57 #include <dev/netif/ic_layer/hd64570.h>
58 #include <dev/netif/ar/if_arregs.h>
68 static int ar_isa_probe (device_t);
69 static int ar_isa_attach (device_t);
71 static struct isa_pnp_id ar_ids[] = {
75 static device_method_t ar_methods[] = {
76 DEVMETHOD(device_probe, ar_isa_probe),
77 DEVMETHOD(device_attach, ar_isa_attach),
78 DEVMETHOD(device_detach, ar_detach),
82 static driver_t ar_isa_driver = {
85 sizeof (struct ar_hardc)
88 DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, NULL, NULL);
91 * Probe to see if it is there.
92 * Get its information and fill it in.
95 ar_isa_probe(device_t device)
98 u_long membase, memsize;
101 error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
102 if(error == ENXIO || error == 0)
105 hc = (struct ar_hardc *)device_get_softc(device);
107 if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) {
112 * Now see if the card is realy there.
114 * XXX For now I just check the undocumented ports
115 * for "570". We will probably have to do more checking.
117 if((ar_inb(hc, AR_ID_5) != '5') ||
118 (ar_inb(hc, AR_ID_7) != '7') ||
119 (ar_inb(hc, AR_ID_0) != '0')) {
120 ar_deallocate_resources(device);
123 membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
124 memsize = ar_inb(hc, AR_REV);
125 memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
126 memsize *= ARC_WIN_SIZ;
127 error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
128 ar_deallocate_resources(device);
134 * Malloc memory for the softc structures.
135 * Reset the card to put it in a known state.
136 * Register the ports on the adapter.
137 * Fill in the info for each port.
138 * Attach each port to sppp and bpf.
141 ar_isa_attach(device_t device)
147 hc = (struct ar_hardc *)device_get_softc(device);
148 if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
151 tmp = ar_inb(hc, AR_BMI);
152 hc->bustype = tmp & AR_BUS_MSK;
153 hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
154 hc->memsize = 1 << hc->memsize;
156 hc->interface[0] = (tmp & AR_IFACE_MSK);
157 hc->interface[1] = hc->interface[0];
158 hc->interface[2] = hc->interface[0];
159 hc->interface[3] = hc->interface[0];
160 tmp = ar_inb(hc, AR_REV);
161 hc->revision = tmp & AR_REV_MSK;
162 hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
163 hc->winsize *= ARC_WIN_SIZ;
164 hc->winmsk = hc->winsize - 1;
165 hc->numports = ar_inb(hc, AR_PNUM);
166 hc->handshake = ar_inb(hc, AR_HNDSH);
168 if(ar_allocate_memory(device, 0, hc->winsize))
171 hc->mem_start = rman_get_virtual(hc->res_memory);
172 hc->mem_end = hc->mem_start + hc->winsize;
173 hc->cunit = device_get_unit(device);
175 switch(hc->interface[0]) {
176 case AR_IFACE_EIA_232:
177 kprintf("ar%d: The EIA 232 interface is not supported.\n",
179 ar_deallocate_resources(device);
183 case AR_IFACE_EIA_530:
184 kprintf("ar%d: WARNING: The EIA 530 interface is untested.\n",
190 kprintf("ar%d: WARNING: The COMBO interface is untested.\n",
196 * Do a little sanity check.
198 if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
199 ar_deallocate_resources(device);
203 if(ar_allocate_irq(device, 0, 1))
206 if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
207 ar_deallocate_resources(device);
212 if(ar_attach(device)) {
213 ar_deallocate_resources(device);
221 ********************************* END ************************************