1 /*
2 * Product specific probe and attach routines for:
3 * 27/284X and aic7770 motherboard SCSI controllers
4 *
5 * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
15 * substantially similar to the "NO WARRANTY" disclaimer below
16 * ("Disclaimer") and any redistribution must be conditioned upon
17 * including a substantially similar Disclaimer requirement for further
18 * binary redistribution.
19 * 3. Neither the names of the above-listed copyright holders nor the names
20 * of any contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * Alternatively, this software may be distributed under the terms of the
24 * GNU General Public License ("GPL") version 2 as published by the Free
25 * Software Foundation.
26 *
27 * NO WARRANTY
28 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
29 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
30 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
31 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
32 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
37 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGES.
39 *
40 * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $
41 *
42 * $FreeBSD$
43 */
44
45 #include "aic7xxx_osm.h"
46 #include "aic7xxx_inline.h"
47 #include "aic7xxx_93cx6.h"
48
49 #define ID_AIC7770 0x04907770
50 #define ID_AHA_274x 0x04907771
51 #define ID_AHA_284xB 0x04907756 /* BIOS enabled */
52 #define ID_AHA_284x 0x04907757 /* BIOS disabled*/
53 #define ID_OLV_274x 0x04907782 /* Olivetti OEM */
54 #define ID_OLV_274xD 0x04907783 /* Olivetti OEM (Differential) */
55
56 static int aic7770_chip_init(struct ahc_softc *ahc);
57 static int aha2840_load_seeprom(struct ahc_softc *ahc);
58 static ahc_device_setup_t ahc_aic7770_VL_setup;
59 static ahc_device_setup_t ahc_aic7770_EISA_setup;
60 static ahc_device_setup_t ahc_aic7770_setup;
61
62 struct aic7770_identity aic7770_ident_table[] =
63 {
64 {
65 ID_AHA_274x,
66 0xFFFFFFFF,
67 "Adaptec 274X SCSI adapter",
68 ahc_aic7770_EISA_setup
69 },
70 {
71 ID_AHA_284xB,
72 0xFFFFFFFE,
73 "Adaptec 284X SCSI adapter",
74 ahc_aic7770_VL_setup
75 },
76 {
77 ID_AHA_284x,
78 0xFFFFFFFE,
79 "Adaptec 284X SCSI adapter (BIOS Disabled)",
80 ahc_aic7770_VL_setup
81 },
82 {
83 ID_OLV_274x,
84 0xFFFFFFFF,
85 "Adaptec (Olivetti OEM) 274X SCSI adapter",
86 ahc_aic7770_EISA_setup
87 },
88 {
89 ID_OLV_274xD,
90 0xFFFFFFFF,
91 "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
92 ahc_aic7770_EISA_setup
93 },
94 /* Generic chip probes for devices we don't know 'exactly' */
95 {
96 ID_AIC7770,
97 0xFFFFFFFF,
98 "Adaptec aic7770 SCSI adapter",
99 ahc_aic7770_EISA_setup
100 }
101 };
102
103 int
aic7770_config(struct ahc_softc * ahc,struct aic7770_identity * entry,u_int io)104 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
105 {
106 int error;
107 int have_seeprom;
108 u_int hostconf;
109 u_int irq;
110 u_int intdef;
111
112 error = entry->setup(ahc);
113 have_seeprom = 0;
114 if (error != 0)
115 return (error);
116
117 error = aic7770_map_registers(ahc, io);
118 if (error != 0)
119 return (error);
120
121 /*
122 * Before we continue probing the card, ensure that
123 * its interrupts are *disabled*. We don't want
124 * a misstep to hang the machine in an interrupt
125 * storm.
126 */
127 ahc_intr_enable(ahc, FALSE);
128
129 ahc->description = entry->name;
130 error = ahc_softc_init(ahc);
131 if (error != 0)
132 return (error);
133
134 ahc->bus_chip_init = aic7770_chip_init;
135
136 error = ahc_reset(ahc, /*reinit*/FALSE);
137 if (error != 0)
138 return (error);
139
140 /* Make sure we have a valid interrupt vector */
141 intdef = ahc_inb(ahc, INTDEF);
142 irq = intdef & VECTOR;
143 switch (irq) {
144 case 9:
145 case 10:
146 case 11:
147 case 12:
148 case 14:
149 case 15:
150 break;
151 default:
152 printk("aic7770_config: invalid irq setting %d\n", intdef);
153 return (ENXIO);
154 }
155
156 if ((intdef & EDGE_TRIG) != 0)
157 ahc->flags |= AHC_EDGE_INTERRUPT;
158
159 switch (ahc->chip & (AHC_EISA|AHC_VL)) {
160 case AHC_EISA:
161 {
162 u_int biosctrl;
163 u_int scsiconf;
164 u_int scsiconf1;
165
166 biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
167 scsiconf = ahc_inb(ahc, SCSICONF);
168 scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
169
170 /* Get the primary channel information */
171 if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
172 ahc->flags |= 1;
173
174 if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
175 ahc->flags |= AHC_USEDEFAULTS;
176 } else {
177 if ((ahc->features & AHC_WIDE) != 0) {
178 ahc->our_id = scsiconf1 & HWSCSIID;
179 if (scsiconf & TERM_ENB)
180 ahc->flags |= AHC_TERM_ENB_A;
181 } else {
182 ahc->our_id = scsiconf & HSCSIID;
183 ahc->our_id_b = scsiconf1 & HSCSIID;
184 if (scsiconf & TERM_ENB)
185 ahc->flags |= AHC_TERM_ENB_A;
186 if (scsiconf1 & TERM_ENB)
187 ahc->flags |= AHC_TERM_ENB_B;
188 }
189 }
190 if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
191 ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
192 break;
193 }
194 case AHC_VL:
195 {
196 have_seeprom = aha2840_load_seeprom(ahc);
197 break;
198 }
199 default:
200 break;
201 }
202 if (have_seeprom == 0) {
203 kfree(ahc->seep_config);
204 ahc->seep_config = NULL;
205 }
206
207 /*
208 * Ensure autoflush is enabled
209 */
210 ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
211
212 /* Setup the FIFO threshold and the bus off time */
213 hostconf = ahc_inb(ahc, HOSTCONF);
214 ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
215 ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
216
217 ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
218 ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
219
220 /*
221 * Generic aic7xxx initialization.
222 */
223 error = ahc_init(ahc);
224 if (error != 0)
225 return (error);
226
227 error = aic7770_map_int(ahc, irq);
228 if (error != 0)
229 return (error);
230
231 ahc->init_level++;
232
233 /*
234 * Enable the board's BUS drivers
235 */
236 ahc_outb(ahc, BCTL, ENABLE);
237 return (0);
238 }
239
240 static int
aic7770_chip_init(struct ahc_softc * ahc)241 aic7770_chip_init(struct ahc_softc *ahc)
242 {
243 ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
244 ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
245 ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
246 ahc_outb(ahc, BCTL, ENABLE);
247 return (ahc_chip_init(ahc));
248 }
249
250 /*
251 * Read the 284x SEEPROM.
252 */
253 static int
aha2840_load_seeprom(struct ahc_softc * ahc)254 aha2840_load_seeprom(struct ahc_softc *ahc)
255 {
256 struct seeprom_descriptor sd;
257 struct seeprom_config *sc;
258 int have_seeprom;
259 uint8_t scsi_conf;
260
261 sd.sd_ahc = ahc;
262 sd.sd_control_offset = SEECTL_2840;
263 sd.sd_status_offset = STATUS_2840;
264 sd.sd_dataout_offset = STATUS_2840;
265 sd.sd_chip = C46;
266 sd.sd_MS = 0;
267 sd.sd_RDY = EEPROM_TF;
268 sd.sd_CS = CS_2840;
269 sd.sd_CK = CK_2840;
270 sd.sd_DO = DO_2840;
271 sd.sd_DI = DI_2840;
272 sc = ahc->seep_config;
273
274 if (bootverbose)
275 printk("%s: Reading SEEPROM...", ahc_name(ahc));
276 have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
277 /*start_addr*/0, sizeof(*sc)/2);
278
279 if (have_seeprom) {
280
281 if (ahc_verify_cksum(sc) == 0) {
282 if(bootverbose)
283 printk ("checksum error\n");
284 have_seeprom = 0;
285 } else if (bootverbose) {
286 printk("done.\n");
287 }
288 }
289
290 if (!have_seeprom) {
291 if (bootverbose)
292 printk("%s: No SEEPROM available\n", ahc_name(ahc));
293 ahc->flags |= AHC_USEDEFAULTS;
294 } else {
295 /*
296 * Put the data we've collected down into SRAM
297 * where ahc_init will find it.
298 */
299 int i;
300 int max_targ;
301 uint16_t discenable;
302
303 max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
304 discenable = 0;
305 for (i = 0; i < max_targ; i++){
306 uint8_t target_settings;
307
308 target_settings = (sc->device_flags[i] & CFXFER) << 4;
309 if (sc->device_flags[i] & CFSYNCH)
310 target_settings |= SOFS;
311 if (sc->device_flags[i] & CFWIDEB)
312 target_settings |= WIDEXFER;
313 if (sc->device_flags[i] & CFDISC)
314 discenable |= (0x01 << i);
315 ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
316 }
317 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
318 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
319
320 ahc->our_id = sc->brtime_id & CFSCSIID;
321
322 scsi_conf = (ahc->our_id & 0x7);
323 if (sc->adapter_control & CFSPARITY)
324 scsi_conf |= ENSPCHK;
325 if (sc->adapter_control & CFRESETB)
326 scsi_conf |= RESET_SCSI;
327
328 if (sc->bios_control & CF284XEXTEND)
329 ahc->flags |= AHC_EXTENDED_TRANS_A;
330 /* Set SCSICONF info */
331 ahc_outb(ahc, SCSICONF, scsi_conf);
332
333 if (sc->adapter_control & CF284XSTERM)
334 ahc->flags |= AHC_TERM_ENB_A;
335 }
336 return (have_seeprom);
337 }
338
339 static int
ahc_aic7770_VL_setup(struct ahc_softc * ahc)340 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
341 {
342 int error;
343
344 error = ahc_aic7770_setup(ahc);
345 ahc->chip |= AHC_VL;
346 return (error);
347 }
348
349 static int
ahc_aic7770_EISA_setup(struct ahc_softc * ahc)350 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
351 {
352 int error;
353
354 error = ahc_aic7770_setup(ahc);
355 ahc->chip |= AHC_EISA;
356 return (error);
357 }
358
359 static int
ahc_aic7770_setup(struct ahc_softc * ahc)360 ahc_aic7770_setup(struct ahc_softc *ahc)
361 {
362 ahc->channel = 'A';
363 ahc->channel_b = 'B';
364 ahc->chip = AHC_AIC7770;
365 ahc->features = AHC_AIC7770_FE;
366 ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
367 ahc->flags |= AHC_PAGESCBS;
368 ahc->instruction_ram_size = 448;
369 return (0);
370 }
371