2 * Product specific probe and attach routines for:
3 * 27/284X and aic7770 motherboard SCSI controllers
5 * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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.
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.
40 * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $
45 #include "aic7xxx_osm.h"
46 #include "aic7xxx_inline.h"
47 #include "aic7xxx_93cx6.h"
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) */
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;
62 struct aic7770_identity aic7770_ident_table[] =
67 "Adaptec 274X SCSI adapter",
68 ahc_aic7770_EISA_setup
73 "Adaptec 284X SCSI adapter",
79 "Adaptec 284X SCSI adapter (BIOS Disabled)",
85 "Adaptec (Olivetti OEM) 274X SCSI adapter",
86 ahc_aic7770_EISA_setup
91 "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
92 ahc_aic7770_EISA_setup
94 /* Generic chip probes for devices we don't know 'exactly' */
98 "Adaptec aic7770 SCSI adapter",
99 ahc_aic7770_EISA_setup
102 const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table);
104 struct aic7770_identity *
105 aic7770_find_device(uint32_t id)
107 struct aic7770_identity *entry;
110 for (i = 0; i < ahc_num_aic7770_devs; i++) {
111 entry = &aic7770_ident_table[i];
112 if (entry->full_id == (id & entry->id_mask))
119 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
127 error = entry->setup(ahc);
132 error = aic7770_map_registers(ahc, io);
137 * Before we continue probing the card, ensure that
138 * its interrupts are *disabled*. We don't want
139 * a misstep to hang the machine in an interrupt
142 ahc_intr_enable(ahc, FALSE);
144 ahc->description = entry->name;
145 error = ahc_softc_init(ahc);
149 ahc->bus_chip_init = aic7770_chip_init;
151 error = ahc_reset(ahc, /*reinit*/FALSE);
155 /* Make sure we have a valid interrupt vector */
156 intdef = ahc_inb(ahc, INTDEF);
157 irq = intdef & VECTOR;
167 printk("aic7770_config: invalid irq setting %d\n", intdef);
171 if ((intdef & EDGE_TRIG) != 0)
172 ahc->flags |= AHC_EDGE_INTERRUPT;
174 switch (ahc->chip & (AHC_EISA|AHC_VL)) {
181 biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
182 scsiconf = ahc_inb(ahc, SCSICONF);
183 scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
185 /* Get the primary channel information */
186 if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
189 if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
190 ahc->flags |= AHC_USEDEFAULTS;
192 if ((ahc->features & AHC_WIDE) != 0) {
193 ahc->our_id = scsiconf1 & HWSCSIID;
194 if (scsiconf & TERM_ENB)
195 ahc->flags |= AHC_TERM_ENB_A;
197 ahc->our_id = scsiconf & HSCSIID;
198 ahc->our_id_b = scsiconf1 & HSCSIID;
199 if (scsiconf & TERM_ENB)
200 ahc->flags |= AHC_TERM_ENB_A;
201 if (scsiconf1 & TERM_ENB)
202 ahc->flags |= AHC_TERM_ENB_B;
205 if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
206 ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
211 have_seeprom = aha2840_load_seeprom(ahc);
217 if (have_seeprom == 0) {
218 kfree(ahc->seep_config);
219 ahc->seep_config = NULL;
223 * Ensure autoflush is enabled
225 ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
227 /* Setup the FIFO threshold and the bus off time */
228 hostconf = ahc_inb(ahc, HOSTCONF);
229 ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
230 ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
232 ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
233 ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
236 * Generic aic7xxx initialization.
238 error = ahc_init(ahc);
242 error = aic7770_map_int(ahc, irq);
249 * Enable the board's BUS drivers
251 ahc_outb(ahc, BCTL, ENABLE);
256 aic7770_chip_init(struct ahc_softc *ahc)
258 ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
259 ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
260 ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
261 ahc_outb(ahc, BCTL, ENABLE);
262 return (ahc_chip_init(ahc));
266 * Read the 284x SEEPROM.
269 aha2840_load_seeprom(struct ahc_softc *ahc)
271 struct seeprom_descriptor sd;
272 struct seeprom_config *sc;
277 sd.sd_control_offset = SEECTL_2840;
278 sd.sd_status_offset = STATUS_2840;
279 sd.sd_dataout_offset = STATUS_2840;
282 sd.sd_RDY = EEPROM_TF;
287 sc = ahc->seep_config;
290 printk("%s: Reading SEEPROM...", ahc_name(ahc));
291 have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
292 /*start_addr*/0, sizeof(*sc)/2);
296 if (ahc_verify_cksum(sc) == 0) {
298 printk ("checksum error\n");
300 } else if (bootverbose) {
307 printk("%s: No SEEPROM available\n", ahc_name(ahc));
308 ahc->flags |= AHC_USEDEFAULTS;
311 * Put the data we've collected down into SRAM
312 * where ahc_init will find it.
318 max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
320 for (i = 0; i < max_targ; i++){
321 uint8_t target_settings;
323 target_settings = (sc->device_flags[i] & CFXFER) << 4;
324 if (sc->device_flags[i] & CFSYNCH)
325 target_settings |= SOFS;
326 if (sc->device_flags[i] & CFWIDEB)
327 target_settings |= WIDEXFER;
328 if (sc->device_flags[i] & CFDISC)
329 discenable |= (0x01 << i);
330 ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
332 ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
333 ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
335 ahc->our_id = sc->brtime_id & CFSCSIID;
337 scsi_conf = (ahc->our_id & 0x7);
338 if (sc->adapter_control & CFSPARITY)
339 scsi_conf |= ENSPCHK;
340 if (sc->adapter_control & CFRESETB)
341 scsi_conf |= RESET_SCSI;
343 if (sc->bios_control & CF284XEXTEND)
344 ahc->flags |= AHC_EXTENDED_TRANS_A;
345 /* Set SCSICONF info */
346 ahc_outb(ahc, SCSICONF, scsi_conf);
348 if (sc->adapter_control & CF284XSTERM)
349 ahc->flags |= AHC_TERM_ENB_A;
351 return (have_seeprom);
355 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
359 error = ahc_aic7770_setup(ahc);
365 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
369 error = ahc_aic7770_setup(ahc);
370 ahc->chip |= AHC_EISA;
375 ahc_aic7770_setup(struct ahc_softc *ahc)
378 ahc->channel_b = 'B';
379 ahc->chip = AHC_AIC7770;
380 ahc->features = AHC_AIC7770_FE;
381 ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
382 ahc->flags |= AHC_PAGESCBS;
383 ahc->instruction_ram_size = 448;