commented early_printk patch because of rejects.
[linux-flexiantxendom0-3.2.10.git] / drivers / scsi / aic7xxx / aic7770.c
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#30 $
41  *
42  * $FreeBSD$
43  */
44
45 #ifdef __linux__
46 #include "aic7xxx_osm.h"
47 #include "aic7xxx_inline.h"
48 #include "aic7xxx_93cx6.h"
49 #else
50 #include <dev/aic7xxx/aic7xxx_osm.h>
51 #include <dev/aic7xxx/aic7xxx_inline.h>
52 #include <dev/aic7xxx/aic7xxx_93cx6.h>
53 #endif
54
55 #define ID_AIC7770      0x04907770
56 #define ID_AHA_274x     0x04907771
57 #define ID_AHA_284xB    0x04907756 /* BIOS enabled */
58 #define ID_AHA_284x     0x04907757 /* BIOS disabled*/
59 #define ID_OLV_274x     0x04907782 /* Olivetti OEM */
60 #define ID_OLV_274xD    0x04907783 /* Olivetti OEM (Differential) */
61
62 static int aic7770_chip_init(struct ahc_softc *ahc);
63 static int aic7770_suspend(struct ahc_softc *ahc);
64 static int aic7770_resume(struct ahc_softc *ahc);
65 static int aha2840_load_seeprom(struct ahc_softc *ahc);
66 static ahc_device_setup_t ahc_aic7770_VL_setup;
67 static ahc_device_setup_t ahc_aic7770_EISA_setup;;
68 static ahc_device_setup_t ahc_aic7770_setup;
69
70
71 struct aic7770_identity aic7770_ident_table [] =
72 {
73         {
74                 ID_AHA_274x,
75                 0xFFFFFFFF,
76                 "Adaptec 274X SCSI adapter",
77                 ahc_aic7770_EISA_setup
78         },
79         {
80                 ID_AHA_284xB,
81                 0xFFFFFFFE,
82                 "Adaptec 284X SCSI adapter",
83                 ahc_aic7770_VL_setup
84         },
85         {
86                 ID_OLV_274x,
87                 0xFFFFFFFF,
88                 "Adaptec (Olivetti OEM) 274X SCSI adapter",
89                 ahc_aic7770_EISA_setup
90         },
91         {
92                 ID_OLV_274xD,
93                 0xFFFFFFFF,
94                 "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
95                 ahc_aic7770_EISA_setup
96         },
97         /* Generic chip probes for devices we don't know 'exactly' */
98         {
99                 ID_AIC7770,
100                 0xFFFFFFFF,
101                 "Adaptec aic7770 SCSI adapter",
102                 ahc_aic7770_EISA_setup
103         }
104 };
105 const int ahc_num_aic7770_devs = NUM_ELEMENTS(aic7770_ident_table);
106
107 struct aic7770_identity *
108 aic7770_find_device(uint32_t id)
109 {
110         struct  aic7770_identity *entry;
111         int     i;
112
113         for (i = 0; i < ahc_num_aic7770_devs; i++) {
114                 entry = &aic7770_ident_table[i];
115                 if (entry->full_id == (id & entry->id_mask))
116                         return (entry);
117         }
118         return (NULL);
119 }
120
121 int
122 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
123 {
124         u_long  l;
125         int     error;
126         int     have_seeprom;
127         u_int   hostconf;
128         u_int   irq;
129         u_int   intdef;
130
131         error = entry->setup(ahc);
132         have_seeprom = 0;
133         if (error != 0)
134                 return (error);
135
136         error = aic7770_map_registers(ahc, io);
137         if (error != 0)
138                 return (error);
139
140         /*
141          * Before we continue probing the card, ensure that
142          * its interrupts are *disabled*.  We don't want
143          * a misstep to hang the machine in an interrupt
144          * storm.
145          */
146         ahc_intr_enable(ahc, FALSE);
147
148         ahc->description = entry->name;
149         error = ahc_softc_init(ahc);
150         if (error != 0)
151                 return (error);
152
153         ahc->bus_chip_init = aic7770_chip_init;
154         ahc->bus_suspend = aic7770_suspend;
155         ahc->bus_resume = aic7770_resume;
156
157         error = ahc_reset(ahc);
158         if (error != 0)
159                 return (error);
160
161         /* Make sure we have a valid interrupt vector */
162         intdef = ahc_inb(ahc, INTDEF);
163         irq = intdef & VECTOR;
164         switch (irq) {
165         case 9:
166         case 10:
167         case 11:
168         case 12:
169         case 14:
170         case 15:
171                 break;
172         default:
173                 printf("aic7770_config: invalid irq setting %d\n", intdef);
174                 return (ENXIO);
175         }
176
177         if ((intdef & EDGE_TRIG) != 0)
178                 ahc->flags |= AHC_EDGE_INTERRUPT;
179
180         switch (ahc->chip & (AHC_EISA|AHC_VL)) {
181         case AHC_EISA:
182         {
183                 u_int biosctrl;
184                 u_int scsiconf;
185                 u_int scsiconf1;
186
187                 biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
188                 scsiconf = ahc_inb(ahc, SCSICONF);
189                 scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
190
191                 /* Get the primary channel information */
192                 if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
193                         ahc->flags |= 1;
194
195                 if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
196                         ahc->flags |= AHC_USEDEFAULTS;
197                 } else {
198                         if ((ahc->features & AHC_WIDE) != 0) {
199                                 ahc->our_id = scsiconf1 & HWSCSIID;
200                                 if (scsiconf & TERM_ENB)
201                                         ahc->flags |= AHC_TERM_ENB_A;
202                         } else {
203                                 ahc->our_id = scsiconf & HSCSIID;
204                                 ahc->our_id_b = scsiconf1 & HSCSIID;
205                                 if (scsiconf & TERM_ENB)
206                                         ahc->flags |= AHC_TERM_ENB_A;
207                                 if (scsiconf1 & TERM_ENB)
208                                         ahc->flags |= AHC_TERM_ENB_B;
209                         }
210                 }
211                 if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
212                         ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
213                 break;
214         }
215         case AHC_VL:
216         {
217                 have_seeprom = aha2840_load_seeprom(ahc);
218                 break;
219         }
220         default:
221                 break;
222         }
223         if (have_seeprom == 0) {
224                 free(ahc->seep_config, M_DEVBUF);
225                 ahc->seep_config = NULL;
226         }
227
228         /*
229          * Ensure autoflush is enabled
230          */
231         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
232
233         /* Setup the FIFO threshold and the bus off time */
234         hostconf = ahc_inb(ahc, HOSTCONF);
235         ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
236         ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
237
238         ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
239         ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
240
241         /*
242          * Generic aic7xxx initialization.
243          */
244         error = ahc_init(ahc);
245         if (error != 0)
246                 return (error);
247
248         error = aic7770_map_int(ahc, irq);
249         if (error != 0)
250                 return (error);
251
252         ahc_list_lock(&l);
253         /*
254          * Link this softc in with all other ahc instances.
255          */
256         ahc_softc_insert(ahc);
257
258         /*
259          * Enable the board's BUS drivers
260          */
261         ahc_outb(ahc, BCTL, ENABLE);
262
263         ahc_list_unlock(&l);
264
265         return (0);
266 }
267
268 static int
269 aic7770_chip_init(struct ahc_softc *ahc)
270 {
271         ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
272         ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
273         ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
274         ahc_outb(ahc, BCTL, ENABLE);
275         return (ahc_chip_init(ahc));
276 }
277
278 static int
279 aic7770_suspend(struct ahc_softc *ahc)
280 {
281         return (ahc_suspend(ahc));
282 }
283
284 static int
285 aic7770_resume(struct ahc_softc *ahc)
286 {
287         return (ahc_resume(ahc));
288 }
289
290 /*
291  * Read the 284x SEEPROM.
292  */
293 static int
294 aha2840_load_seeprom(struct ahc_softc *ahc)
295 {
296         struct  seeprom_descriptor sd;
297         struct  seeprom_config *sc;
298         int     have_seeprom;
299         uint8_t scsi_conf;
300
301         sd.sd_ahc = ahc;
302         sd.sd_control_offset = SEECTL_2840;
303         sd.sd_status_offset = STATUS_2840;
304         sd.sd_dataout_offset = STATUS_2840;             
305         sd.sd_chip = C46;
306         sd.sd_MS = 0;
307         sd.sd_RDY = EEPROM_TF;
308         sd.sd_CS = CS_2840;
309         sd.sd_CK = CK_2840;
310         sd.sd_DO = DO_2840;
311         sd.sd_DI = DI_2840;
312         sc = ahc->seep_config;
313
314         if (bootverbose)
315                 printf("%s: Reading SEEPROM...", ahc_name(ahc));
316         have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
317                                         /*start_addr*/0, sizeof(*sc)/2);
318
319         if (have_seeprom) {
320
321                 if (ahc_verify_cksum(sc) == 0) {
322                         if(bootverbose)
323                                 printf ("checksum error\n");
324                         have_seeprom = 0;
325                 } else if (bootverbose) {
326                         printf("done.\n");
327                 }
328         }
329
330         if (!have_seeprom) {
331                 if (bootverbose)
332                         printf("%s: No SEEPROM available\n", ahc_name(ahc));
333                 ahc->flags |= AHC_USEDEFAULTS;
334         } else {
335                 /*
336                  * Put the data we've collected down into SRAM
337                  * where ahc_init will find it.
338                  */
339                 int      i;
340                 int      max_targ;
341                 uint16_t discenable;
342
343                 max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
344                 discenable = 0;
345                 for (i = 0; i < max_targ; i++){
346                         uint8_t target_settings;
347
348                         target_settings = (sc->device_flags[i] & CFXFER) << 4;
349                         if (sc->device_flags[i] & CFSYNCH)
350                                 target_settings |= SOFS;
351                         if (sc->device_flags[i] & CFWIDEB)
352                                 target_settings |= WIDEXFER;
353                         if (sc->device_flags[i] & CFDISC)
354                                 discenable |= (0x01 << i);
355                         ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
356                 }
357                 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
358                 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
359
360                 ahc->our_id = sc->brtime_id & CFSCSIID;
361
362                 scsi_conf = (ahc->our_id & 0x7);
363                 if (sc->adapter_control & CFSPARITY)
364                         scsi_conf |= ENSPCHK;
365                 if (sc->adapter_control & CFRESETB)
366                         scsi_conf |= RESET_SCSI;
367
368                 if (sc->bios_control & CF284XEXTEND)            
369                         ahc->flags |= AHC_EXTENDED_TRANS_A;
370                 /* Set SCSICONF info */
371                 ahc_outb(ahc, SCSICONF, scsi_conf);
372
373                 if (sc->adapter_control & CF284XSTERM)
374                         ahc->flags |= AHC_TERM_ENB_A;
375         }
376         return (have_seeprom);
377 }
378
379 static int
380 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
381 {
382         int error;
383
384         error = ahc_aic7770_setup(ahc);
385         ahc->chip |= AHC_VL;
386         return (error);
387 }
388
389 static int
390 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
391 {
392         int error;
393
394         error = ahc_aic7770_setup(ahc);
395         ahc->chip |= AHC_EISA;
396         return (error);
397 }
398
399 static int
400 ahc_aic7770_setup(struct ahc_softc *ahc)
401 {
402         ahc->channel = 'A';
403         ahc->channel_b = 'B';
404         ahc->chip = AHC_AIC7770;
405         ahc->features = AHC_AIC7770_FE;
406         ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
407         ahc->flags |= AHC_PAGESCBS;
408         ahc->instruction_ram_size = 448;
409         return (0);
410 }