Do a major clean-up of the BUSDMA architecture. A large number of
[dragonfly.git] / sys / dev / netif / ar / if_ar_isa.c
CommitLineData
ff1a487c 1/*-
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2 * Copyright (c) 1995 - 2001 John Hay. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
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.
15 *
16 * THIS SOFTWARE IS PROVIDED BY John Hay ``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 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
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
ff1a487c 28 * $FreeBSD: src/sys/dev/ar/if_ar_isa.c,v 1.54 2005/01/06 01:42:28 imp Exp $
1f7ab7c9 29 * $DragonFly: src/sys/dev/netif/ar/if_ar_isa.c,v 1.5 2006/10/25 20:55:55 dillon Exp $
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30 */
31
32/*
33 * Programming assumptions and other issues.
34 *
35 * The descriptors of a DMA channel will fit in a 16K memory window.
36 *
37 * The buffers of a transmit DMA channel will fit in a 16K memory window.
38 *
39 * Only the ISA bus cards with X.21 and V.35 is tested.
40 *
41 * When interface is going up, handshaking is set and it is only cleared
42 * when the interface is down'ed.
43 *
44 * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
45 * internal/external clock, etc.....
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46 */
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/kernel.h>
51#include <sys/module.h>
52#include <sys/bus.h>
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53#include <sys/rman.h>
54
1f2de5d4 55#include <bus/isa/isavar.h>
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56#include "isa_if.h"
57
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58#include <dev/netif/ic_layer/hd64570.h>
59#include <dev/netif/ar/if_arregs.h>
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60
61#ifdef TRACE
62#define TRC(x) x
63#else
64#define TRC(x)
65#endif
66
67#define TRCL(x) x
68
69static int ar_isa_probe (device_t);
70static int ar_isa_attach (device_t);
71
72static struct isa_pnp_id ar_ids[] = {
73 {0, NULL}
74};
75
76static device_method_t ar_methods[] = {
77 DEVMETHOD(device_probe, ar_isa_probe),
78 DEVMETHOD(device_attach, ar_isa_attach),
79 DEVMETHOD(device_detach, ar_detach),
80 { 0, 0 }
81};
82
83static driver_t ar_isa_driver = {
84 "ar",
85 ar_methods,
86 sizeof (struct ar_hardc)
87};
88
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89DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0);
90
91/*
92 * Probe to see if it is there.
93 * Get its information and fill it in.
94 */
95static int
96ar_isa_probe(device_t device)
97{
98 int error;
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99 u_long membase, memsize;
100 struct ar_hardc *hc;
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101
102 error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
103 if(error == ENXIO || error == 0)
104 return (error);
105
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106 hc = (struct ar_hardc *)device_get_softc(device);
107
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108 if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) {
109 return (ENXIO);
110 }
111
112 /*
113 * Now see if the card is realy there.
114 *
115 * XXX For now I just check the undocumented ports
116 * for "570". We will probably have to do more checking.
117 */
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118 if((ar_inb(hc, AR_ID_5) != '5') ||
119 (ar_inb(hc, AR_ID_7) != '7') ||
120 (ar_inb(hc, AR_ID_0) != '0')) {
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121 ar_deallocate_resources(device);
122 return (ENXIO);
123 }
124 membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
ff1a487c 125 memsize = ar_inb(hc, AR_REV);
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126 memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
127 memsize *= ARC_WIN_SIZ;
128 error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
129 ar_deallocate_resources(device);
130
131 return (error);
132}
133
134/*
135 * Malloc memory for the softc structures.
136 * Reset the card to put it in a known state.
137 * Register the ports on the adapter.
138 * Fill in the info for each port.
139 * Attach each port to sppp and bpf.
140 */
141static int
142ar_isa_attach(device_t device)
143{
144 u_int tmp;
145 u_long irq, junk;
146 struct ar_hardc *hc;
147
148 hc = (struct ar_hardc *)device_get_softc(device);
149 if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
150 return (ENXIO);
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ff1a487c 152 tmp = ar_inb(hc, AR_BMI);
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153 hc->bustype = tmp & AR_BUS_MSK;
154 hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
155 hc->memsize = 1 << hc->memsize;
156 hc->memsize <<= 16;
157 hc->interface[0] = (tmp & AR_IFACE_MSK);
158 hc->interface[1] = hc->interface[0];
159 hc->interface[2] = hc->interface[0];
160 hc->interface[3] = hc->interface[0];
ff1a487c 161 tmp = ar_inb(hc, AR_REV);
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162 hc->revision = tmp & AR_REV_MSK;
163 hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
164 hc->winsize *= ARC_WIN_SIZ;
165 hc->winmsk = hc->winsize - 1;
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166 hc->numports = ar_inb(hc, AR_PNUM);
167 hc->handshake = ar_inb(hc, AR_HNDSH);
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168
169 if(ar_allocate_memory(device, 0, hc->winsize))
170 return (ENXIO);
171
172 hc->mem_start = rman_get_virtual(hc->res_memory);
173 hc->mem_end = hc->mem_start + hc->winsize;
174 hc->cunit = device_get_unit(device);
175
176 switch(hc->interface[0]) {
177 case AR_IFACE_EIA_232:
178 printf("ar%d: The EIA 232 interface is not supported.\n",
179 hc->cunit);
180 ar_deallocate_resources(device);
181 return (ENXIO);
182 case AR_IFACE_V_35:
183 break;
184 case AR_IFACE_EIA_530:
185 printf("ar%d: WARNING: The EIA 530 interface is untested.\n",
186 hc->cunit);
187 break;
188 case AR_IFACE_X_21:
189 break;
190 case AR_IFACE_COMBO:
191 printf("ar%d: WARNING: The COMBO interface is untested.\n",
192 hc->cunit);
193 break;
194 }
195
196 /*
197 * Do a little sanity check.
198 */
199 if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
200 ar_deallocate_resources(device);
201 return (ENXIO);
202 }
203
204 if(ar_allocate_irq(device, 0, 1))
205 return (ENXIO);
206
207 if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
208 ar_deallocate_resources(device);
209 return (ENXIO);
210 }
211 hc->isa_irq = irq;
212
213 if(ar_attach(device)) {
214 ar_deallocate_resources(device);
215 return (ENXIO);
216 }
217
218 return (0);
219}
220
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221/*
222 ********************************* END ************************************
223 */