source: trunk/minix/drivers/dp8390/wdeth.c@ 20

Last change on this file since 20 was 9, checked in by Mattia Monga, 14 years ago

Minix 3.1.2a
File size: 9.5 KB
Line 
1/*
2wdeth.c
3
4Created: March 14, 1994 by Philip Homburg
5*/
6
7#include "../drivers.h"
8
9#include <net/gen/ether.h>
10#include <net/gen/eth_io.h>
11#include "assert.h"
12
13#include "local.h"
14#include "dp8390.h"
15#include "wdeth.h"
16
17#if ENABLE_WDETH
18
19#define WET_ETHERNET 0x01 /* Ethernet transceiver */
20#define WET_STARLAN 0x02 /* Starlan transceiver */
21#define WET_INTERF_CHIP 0x04 /* has a WD83C583 interface chip */
22#define WET_BRD_16BIT 0x08 /* 16 bit board */
23#define WET_SLT_16BIT 0x10 /* 16 bit slot */
24#define WET_790 0x20 /* '790 chip */
25
26static int we_int_table[8]= { 9, 3, 5, 7, 10, 11, 15, 4 };
27static int we_790int_table[8]= { 0, 9, 3, 5, 7, 10, 11, 15 };
28
29_PROTOTYPE( static void we_init, (dpeth_t *dep) );
30_PROTOTYPE( static void we_stop, (dpeth_t *dep) );
31_PROTOTYPE( static int we_aliasing, (dpeth_t *dep) );
32_PROTOTYPE( static int we_interface_chip, (dpeth_t *dep) );
33_PROTOTYPE( static int we_16bitboard, (dpeth_t *dep) );
34_PROTOTYPE( static int we_16bitslot, (dpeth_t *dep) );
35_PROTOTYPE( static int we_ultra, (dpeth_t *dep) );
36
37/*===========================================================================*
38 * wdeth_probe *
39 *===========================================================================*/
40int wdeth_probe(dep)
41dpeth_t *dep;
42{
43 int sum;
44
45 if (dep->de_linmem == 0)
46 return 0; /* No shared memory, so no WD board */
47
48 sum = inb_we(dep, EPL_EA0) + inb_we(dep, EPL_EA1) +
49 inb_we(dep, EPL_EA2) + inb_we(dep, EPL_EA3) +
50 inb_we(dep, EPL_EA4) + inb_we(dep, EPL_EA5) +
51 inb_we(dep, EPL_TLB) + inb_we(dep, EPL_CHKSUM);
52 if ((sum & 0xFF) != 0xFF)
53 return 0; /* No ethernet board at this address */
54
55 dep->de_initf= we_init;
56 dep->de_stopf= we_stop;
57 dep->de_prog_IO= 0;
58 return 1;
59}
60
61/*===========================================================================*
62 * we_init *
63 *===========================================================================*/
64static void we_init(dep)
65dpeth_t *dep;
66{
67 int i, int_indx, int_nr;
68 int tlb, rambit, revision;
69 int icr, irr, hwr, b, gcr;
70 int we_type;
71 int sendq_nr;
72
73 assert(dep->de_mode == DEM_ENABLED);
74 assert(!(dep->de_flags & DEF_ENABLED));
75
76 dep->de_address.ea_addr[0] = inb_we(dep, EPL_EA0);
77 dep->de_address.ea_addr[1] = inb_we(dep, EPL_EA1);
78 dep->de_address.ea_addr[2] = inb_we(dep, EPL_EA2);
79 dep->de_address.ea_addr[3] = inb_we(dep, EPL_EA3);
80 dep->de_address.ea_addr[4] = inb_we(dep, EPL_EA4);
81 dep->de_address.ea_addr[5] = inb_we(dep, EPL_EA5);
82
83 dep->de_dp8390_port= dep->de_base_port + EPL_DP8390;
84
85 dep->de_16bit= 0;
86
87 we_type= 0;
88 we_type |= WET_ETHERNET; /* assume ethernet */
89 if (we_ultra(dep))
90 we_type |= WET_790;
91 if (!we_aliasing(dep))
92 {
93 if (we_interface_chip(dep))
94 we_type |= WET_INTERF_CHIP;
95 if (we_16bitboard(dep))
96 {
97 we_type |= WET_BRD_16BIT;
98 if (we_16bitslot(dep))
99 we_type |= WET_SLT_16BIT;
100 }
101 }
102 if (we_type & WET_SLT_16BIT)
103 dep->de_16bit= 1;
104
105 /* look at the on board ram size. */
106 tlb= inb_we(dep, EPL_TLB);
107 revision= tlb & E_TLB_REV;
108 rambit= tlb & E_TLB_RAM;
109
110 if (dep->de_ramsize != 0)
111 {
112 /* size set from boot environment. */
113 }
114 else if (revision < 2)
115 {
116 dep->de_ramsize= 0x2000; /* 8K */
117 if (we_type & WET_BRD_16BIT)
118 dep->de_ramsize= 0x4000; /* 16K */
119 else if ((we_type & WET_INTERF_CHIP) &&
120 inb_we(dep, EPL_ICR) & E_ICR_MEMBIT)
121 {
122 dep->de_ramsize= 0x8000; /* 32K */
123 }
124 }
125 else
126 {
127 if (we_type & WET_BRD_16BIT)
128 {
129 /* 32K or 16K */
130 dep->de_ramsize= rambit ? 0x8000 : 0x4000;
131 }
132 else
133 {
134 /* 32K or 8K */
135 dep->de_ramsize= rambit ? 0x8000 : 0x2000;
136 }
137 }
138
139 if (we_type & WET_790)
140 {
141 outb_we(dep, EPL_MSR, E_MSR_RESET);
142 if ((we_type & (WET_BRD_16BIT|WET_SLT_16BIT)) ==
143 (WET_BRD_16BIT|WET_SLT_16BIT))
144 {
145 outb_we(dep, EPL_LAAR, E_LAAR_LAN16E | E_LAAR_MEM16E);
146 }
147 }
148 else if (we_type & WET_BRD_16BIT)
149 {
150 if (we_type & WET_SLT_16BIT)
151 {
152 outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_SOFTINT |
153 E_LAAR_LAN16E | E_LAAR_MEM16E);
154 }
155 else
156 {
157 outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_SOFTINT |
158 E_LAAR_LAN16E);
159 }
160 }
161
162 if (we_type & WET_790)
163 {
164 outb_we(dep, EPL_MSR, E_MSR_MENABLE);
165 hwr= inb_we(dep, EPL_790_HWR);
166 outb_we(dep, EPL_790_HWR, hwr | E_790_HWR_SWH);
167 b= inb_we(dep, EPL_790_B);
168 outb_we(dep, EPL_790_B, ((dep->de_linmem >> 13) & 0x0f) |
169 ((dep->de_linmem >> 11) & 0x40) | (b & 0xb0));
170 outb_we(dep, EPL_790_HWR, hwr & ~E_790_HWR_SWH);
171 }
172 else
173 {
174 outb_we(dep, EPL_MSR, E_MSR_RESET);
175 outb_we(dep, EPL_MSR, E_MSR_MENABLE |
176 ((dep->de_linmem >> 13) & E_MSR_MEMADDR));
177 }
178
179 if ((we_type & WET_INTERF_CHIP) && !(we_type & WET_790))
180 {
181 icr= inb_we(dep, EPL_ICR);
182 irr= inb_we(dep, EPL_IRR);
183 int_indx= (icr & E_ICR_IR2) |
184 ((irr & (E_IRR_IR0|E_IRR_IR1)) >> 5);
185 int_nr= we_int_table[int_indx];
186#if DEBUG
187 { printf("%s: encoded irq= %d\n", dep->de_name, int_nr); }
188#endif
189 if (dep->de_irq & DEI_DEFAULT) dep->de_irq= int_nr;
190
191 outb_we(dep, EPL_IRR, irr | E_IRR_IEN);
192 }
193 if (we_type & WET_790)
194 {
195 hwr= inb_we(dep, EPL_790_HWR);
196 outb_we(dep, EPL_790_HWR, hwr | E_790_HWR_SWH);
197
198 gcr= inb_we(dep, EPL_790_GCR);
199
200 outb_we(dep, EPL_790_HWR, hwr & ~E_790_HWR_SWH);
201
202 int_indx= ((gcr & E_790_GCR_IR2) >> 4) |
203 ((gcr & (E_790_GCR_IR1|E_790_GCR_IR0)) >> 2);
204 int_nr= we_790int_table[int_indx];
205#if DEBUG
206 { printf("%s: encoded irq= %d\n", dep->de_name, int_nr); }
207#endif
208 if (dep->de_irq & DEI_DEFAULT) dep->de_irq= int_nr;
209
210 icr= inb_we(dep, EPL_790_ICR);
211 outb_we(dep, EPL_790_ICR, icr | E_790_ICR_EIL);
212 }
213
214 /* Strip the "default flag." */
215 dep->de_irq &= ~DEI_DEFAULT;
216
217 if (!debug)
218 {
219 printf("%s: WD80%d3 at %X:%d:%lX\n",
220 dep->de_name, we_type & WET_BRD_16BIT ? 1 : 0,
221 dep->de_base_port, dep->de_irq, dep->de_linmem);
222 }
223 else
224 {
225 printf("%s: Western Digital %s%s card %s%s at I/O "
226 "address 0x%X, memory address 0x%lX, "
227 "memory size 0x%X, irq %d\n",
228 dep->de_name,
229 we_type & WET_BRD_16BIT ? "16-bit " : "",
230 we_type & WET_ETHERNET ? "Ethernet" :
231 we_type & WET_STARLAN ? "Starlan" : "Network",
232 we_type & WET_INTERF_CHIP ? "with an interface chip " : "",
233 we_type & WET_SLT_16BIT ? "in a 16-bit slot " : "",
234 dep->de_base_port, dep->de_linmem, dep->de_ramsize,
235 dep->de_irq);
236 }
237
238 dep->de_offset_page= 0; /* Shared memory starts at 0 */
239
240 /* Allocate one send buffer (1.5KB) per 8KB of on board memory. */
241 sendq_nr= dep->de_ramsize / 0x2000;
242 if (sendq_nr < 1)
243 sendq_nr= 1;
244 else if (sendq_nr > SENDQ_NR)
245 sendq_nr= SENDQ_NR;
246 dep->de_sendq_nr= sendq_nr;
247 for (i= 0; i<sendq_nr; i++)
248 dep->de_sendq[i].sq_sendpage= i*SENDQ_PAGES;
249
250 dep->de_startpage= i*SENDQ_PAGES;
251 dep->de_stoppage= dep->de_ramsize / DP_PAGESIZE;
252}
253
254/*===========================================================================*
255 * we_stop *
256 *===========================================================================*/
257static void we_stop(dep)
258dpeth_t *dep;
259{
260 if (dep->de_16bit)
261 outb_we(dep, EPL_LAAR, E_LAAR_A19 | E_LAAR_LAN16E);
262 outb_we(dep, EPL_MSR, E_MSR_RESET);
263 outb_we(dep, EPL_MSR, 0);
264}
265
266/*===========================================================================*
267 * we_aliasing *
268 *===========================================================================*/
269static int we_aliasing(dep)
270dpeth_t *dep;
271{
272/* Determine whether wd8003 hardware performs register aliasing. This implies
273 * an old WD8003E board. */
274
275 if (inb_we(dep, EPL_REG1) != inb_we(dep, EPL_EA1))
276 return 0;
277 if (inb_we(dep, EPL_REG2) != inb_we(dep, EPL_EA2))
278 return 0;
279 if (inb_we(dep, EPL_REG3) != inb_we(dep, EPL_EA3))
280 return 0;
281 if (inb_we(dep, EPL_REG4) != inb_we(dep, EPL_EA4))
282 return 0;
283 if (inb_we(dep, EPL_REG7) != inb_we(dep, EPL_CHKSUM))
284 return 0;
285 return 1;
286}
287
288/*===========================================================================*
289 * we_interface_chip *
290 *===========================================================================*/
291static int we_interface_chip(dep)
292dpeth_t *dep;
293{
294/* Determine if the board has an interface chip. */
295
296 outb_we(dep, EPL_GP2, 0x35);
297 if (inb_we(dep, EPL_GP2) != 0x35)
298 return 0;
299 outb_we(dep, EPL_GP2, 0x3A);
300 if (inb_we(dep, EPL_GP2) != 0x3A)
301 return 0;
302 return 1;
303}
304
305/*===========================================================================*
306 * we_16bitboard *
307 *===========================================================================*/
308static int we_16bitboard(dep)
309dpeth_t *dep;
310{
311/* Determine whether the board is capable of doing 16 bit memory moves.
312 * If the 16 bit enable bit is unchangable by software we'll assume an
313 * 8 bit board.
314 */
315 int icr;
316 u8_t tlb;
317
318 icr= inb_we(dep, EPL_ICR);
319
320 outb_we(dep, EPL_ICR, icr ^ E_ICR_16BIT);
321 if (inb_we(dep, EPL_ICR) == icr)
322 {
323 tlb= inb_we(dep, EPL_TLB);
324#if DEBUG
325 printf("%s: tlb= 0x%x\n", dep->de_name, tlb);
326#endif
327 return tlb == E_TLB_EB || tlb == E_TLB_E ||
328 tlb == E_TLB_SMCE || tlb == E_TLB_SMC8216T ||
329 tlb == E_TLB_SMC8216C;
330 }
331 outb_we(dep, EPL_ICR, icr);
332 return (icr & E_ICR_16BIT);
333}
334
335/*===========================================================================*
336 * we_16bitslot *
337 *===========================================================================*/
338static int we_16bitslot(dep)
339dpeth_t *dep;
340{
341/* Determine if the 16 bit board in plugged into a 16 bit slot. */
342 return !!(inb_we(dep, EPL_ICR) & E_ICR_16BIT);
343}
344
345/*===========================================================================*
346 * we_ultra *
347 *===========================================================================*/
348static int we_ultra(dep)
349dpeth_t *dep;
350{
351/* Determine if we has an '790 chip. */
352 u8_t tlb;
353
354 tlb= inb_we(dep, EPL_TLB);
355 return tlb == E_TLB_SMC8216T || tlb == E_TLB_SMC8216C;
356}
357
358#endif /* ENABLE_WDETH */
359
360/*
361 * $PchId: wdeth.c,v 1.10 2003/09/10 19:31:50 philip Exp $
362 */
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