scsi/aic7xxx/aic7770.c

0001 /*
0002  * Product specific probe and attach routines for:
0003  *  27/284X and aic7770 motherboard SCSI controllers
0004  *
0005  * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs.
0006  * All rights reserved.
0007  *
0008  * Redistribution and use in source and binary forms, with or without
0009  * modification, are permitted provided that the following conditions
0010  * are met:
0011  * 1. Redistributions of source code must retain the above copyright
0012  *    notice, this list of conditions, and the following disclaimer,
0013  *    without modification.
0014  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
0015  *    substantially similar to the "NO WARRANTY" disclaimer below
0016  *    ("Disclaimer") and any redistribution must be conditioned upon
0017  *    including a substantially similar Disclaimer requirement for further
0018  *    binary redistribution.
0019  * 3. Neither the names of the above-listed copyright holders nor the names
0020  *    of any contributors may be used to endorse or promote products derived
0021  *    from this software without specific prior written permission.
0022  *
0023  * Alternatively, this software may be distributed under the terms of the
0024  * GNU General Public License ("GPL") version 2 as published by the Free
0025  * Software Foundation.
0026  *
0027  * NO WARRANTY
0028  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
0029  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
0030  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
0031  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
0032  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0033  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0034  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0035  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
0036  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
0037  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0038  * POSSIBILITY OF SUCH DAMAGES.
0039  *
0040  * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $
0041  *
0042  * $FreeBSD$
0043  */
0044
0045 #include "aic7xxx_osm.h"
0046 #include "aic7xxx_inline.h"
0047 #include "aic7xxx_93cx6.h"
0048
0049 #define ID_AIC7770  0x04907770
0050 #define ID_AHA_274x 0x04907771
0051 #define ID_AHA_284xB    0x04907756 /* BIOS enabled */
0052 #define ID_AHA_284x 0x04907757 /* BIOS disabled*/
0053 #define ID_OLV_274x 0x04907782 /* Olivetti OEM */
0054 #define ID_OLV_274xD    0x04907783 /* Olivetti OEM (Differential) */
0055
0056 static int aic7770_chip_init(struct ahc_softc *ahc);
0057 static int aha2840_load_seeprom(struct ahc_softc *ahc);
0058 static ahc_device_setup_t ahc_aic7770_VL_setup;
0059 static ahc_device_setup_t ahc_aic7770_EISA_setup;
0060 static ahc_device_setup_t ahc_aic7770_setup;
0061
0062 struct aic7770_identity aic7770_ident_table[] =
0063 {
0064     {
0065         ID_AHA_274x,
0066         0xFFFFFFFF,
0067         "Adaptec 274X SCSI adapter",
0068         ahc_aic7770_EISA_setup
0069     },
0070     {
0071         ID_AHA_284xB,
0072         0xFFFFFFFE,
0073         "Adaptec 284X SCSI adapter",
0074         ahc_aic7770_VL_setup
0075     },
0076     {
0077         ID_AHA_284x,
0078         0xFFFFFFFE,
0079         "Adaptec 284X SCSI adapter (BIOS Disabled)",
0080         ahc_aic7770_VL_setup
0081     },
0082     {
0083         ID_OLV_274x,
0084         0xFFFFFFFF,
0085         "Adaptec (Olivetti OEM) 274X SCSI adapter",
0086         ahc_aic7770_EISA_setup
0087     },
0088     {
0089         ID_OLV_274xD,
0090         0xFFFFFFFF,
0091         "Adaptec (Olivetti OEM) 274X Differential SCSI adapter",
0092         ahc_aic7770_EISA_setup
0093     },
0094     /* Generic chip probes for devices we don't know 'exactly' */
0095     {
0096         ID_AIC7770,
0097         0xFFFFFFFF,
0098         "Adaptec aic7770 SCSI adapter",
0099         ahc_aic7770_EISA_setup
0100     }
0101 };
0102 const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table);
0103
0104 struct aic7770_identity *
0105 aic7770_find_device(uint32_t id)
0106 {
0107     struct  aic7770_identity *entry;
0108     int i;
0109
0110     for (i = 0; i < ahc_num_aic7770_devs; i++) {
0111         entry = &aic7770_ident_table[i];
0112         if (entry->full_id == (id & entry->id_mask))
0113             return (entry);
0114     }
0115     return (NULL);
0116 }
0117
0118 int
0119 aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io)
0120 {
0121     int error;
0122     int have_seeprom;
0123     u_int   hostconf;
0124     u_int   irq;
0125     u_int   intdef;
0126
0127     error = entry->setup(ahc);
0128     have_seeprom = 0;
0129     if (error != 0)
0130         return (error);
0131
0132     error = aic7770_map_registers(ahc, io);
0133     if (error != 0)
0134         return (error);
0135
0136     /*
0137      * Before we continue probing the card, ensure that
0138      * its interrupts are *disabled*.  We don't want
0139      * a misstep to hang the machine in an interrupt
0140      * storm.
0141      */
0142     ahc_intr_enable(ahc, FALSE);
0143
0144     ahc->description = entry->name;
0145     error = ahc_softc_init(ahc);
0146     if (error != 0)
0147         return (error);
0148
0149     ahc->bus_chip_init = aic7770_chip_init;
0150
0151     error = ahc_reset(ahc, /*reinit*/FALSE);
0152     if (error != 0)
0153         return (error);
0154
0155     /* Make sure we have a valid interrupt vector */
0156     intdef = ahc_inb(ahc, INTDEF);
0157     irq = intdef & VECTOR;
0158     switch (irq) {
0159     case 9:
0160     case 10:
0161     case 11:
0162     case 12:
0163     case 14:
0164     case 15:
0165         break;
0166     default:
0167         printk("aic7770_config: invalid irq setting %d\n", intdef);
0168         return (ENXIO);
0169     }
0170
0171     if ((intdef & EDGE_TRIG) != 0)
0172         ahc->flags |= AHC_EDGE_INTERRUPT;
0173
0174     switch (ahc->chip & (AHC_EISA|AHC_VL)) {
0175     case AHC_EISA:
0176     {
0177         u_int biosctrl;
0178         u_int scsiconf;
0179         u_int scsiconf1;
0180
0181         biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
0182         scsiconf = ahc_inb(ahc, SCSICONF);
0183         scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
0184
0185         /* Get the primary channel information */
0186         if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
0187             ahc->flags |= 1;
0188
0189         if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
0190             ahc->flags |= AHC_USEDEFAULTS;
0191         } else {
0192             if ((ahc->features & AHC_WIDE) != 0) {
0193                 ahc->our_id = scsiconf1 & HWSCSIID;
0194                 if (scsiconf & TERM_ENB)
0195                     ahc->flags |= AHC_TERM_ENB_A;
0196             } else {
0197                 ahc->our_id = scsiconf & HSCSIID;
0198                 ahc->our_id_b = scsiconf1 & HSCSIID;
0199                 if (scsiconf & TERM_ENB)
0200                     ahc->flags |= AHC_TERM_ENB_A;
0201                 if (scsiconf1 & TERM_ENB)
0202                     ahc->flags |= AHC_TERM_ENB_B;
0203             }
0204         }
0205         if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS))
0206             ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
0207         break;
0208     }
0209     case AHC_VL:
0210     {
0211         have_seeprom = aha2840_load_seeprom(ahc);
0212         break;
0213     }
0214     default:
0215         break;
0216     }
0217     if (have_seeprom == 0) {
0218         kfree(ahc->seep_config);
0219         ahc->seep_config = NULL;
0220     }
0221
0222     /*
0223      * Ensure autoflush is enabled
0224      */
0225     ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
0226
0227     /* Setup the FIFO threshold and the bus off time */
0228     hostconf = ahc_inb(ahc, HOSTCONF);
0229     ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
0230     ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
0231
0232     ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH;
0233     ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF;
0234
0235     /*
0236      * Generic aic7xxx initialization.
0237      */
0238     error = ahc_init(ahc);
0239     if (error != 0)
0240         return (error);
0241
0242     error = aic7770_map_int(ahc, irq);
0243     if (error != 0)
0244         return (error);
0245
0246     ahc->init_level++;
0247
0248     /*
0249      * Enable the board's BUS drivers
0250      */
0251     ahc_outb(ahc, BCTL, ENABLE);
0252     return (0);
0253 }
0254
0255 static int
0256 aic7770_chip_init(struct ahc_softc *ahc)
0257 {
0258     ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd);
0259     ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime);
0260     ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS);
0261     ahc_outb(ahc, BCTL, ENABLE);
0262     return (ahc_chip_init(ahc));
0263 }
0264
0265 /*
0266  * Read the 284x SEEPROM.
0267  */
0268 static int
0269 aha2840_load_seeprom(struct ahc_softc *ahc)
0270 {
0271     struct  seeprom_descriptor sd;
0272     struct  seeprom_config *sc;
0273     int have_seeprom;
0274     uint8_t scsi_conf;
0275
0276     sd.sd_ahc = ahc;
0277     sd.sd_control_offset = SEECTL_2840;
0278     sd.sd_status_offset = STATUS_2840;
0279     sd.sd_dataout_offset = STATUS_2840;
0280     sd.sd_chip = C46;
0281     sd.sd_MS = 0;
0282     sd.sd_RDY = EEPROM_TF;
0283     sd.sd_CS = CS_2840;
0284     sd.sd_CK = CK_2840;
0285     sd.sd_DO = DO_2840;
0286     sd.sd_DI = DI_2840;
0287     sc = ahc->seep_config;
0288
0289     if (bootverbose)
0290         printk("%s: Reading SEEPROM...", ahc_name(ahc));
0291     have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc,
0292                     /*start_addr*/0, sizeof(*sc)/2);
0293
0294     if (have_seeprom) {
0295
0296         if (ahc_verify_cksum(sc) == 0) {
0297             if(bootverbose)
0298                 printk ("checksum error\n");
0299             have_seeprom = 0;
0300         } else if (bootverbose) {
0301             printk("done.\n");
0302         }
0303     }
0304
0305     if (!have_seeprom) {
0306         if (bootverbose)
0307             printk("%s: No SEEPROM available\n", ahc_name(ahc));
0308         ahc->flags |= AHC_USEDEFAULTS;
0309     } else {
0310         /*
0311          * Put the data we've collected down into SRAM
0312          * where ahc_init will find it.
0313          */
0314         int  i;
0315         int  max_targ;
0316         uint16_t discenable;
0317
0318         max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
0319         discenable = 0;
0320         for (i = 0; i < max_targ; i++){
0321             uint8_t target_settings;
0322
0323             target_settings = (sc->device_flags[i] & CFXFER) << 4;
0324             if (sc->device_flags[i] & CFSYNCH)
0325                 target_settings |= SOFS;
0326             if (sc->device_flags[i] & CFWIDEB)
0327                 target_settings |= WIDEXFER;
0328             if (sc->device_flags[i] & CFDISC)
0329                 discenable |= (0x01 << i);
0330             ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
0331         }
0332         ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
0333         ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
0334
0335         ahc->our_id = sc->brtime_id & CFSCSIID;
0336
0337         scsi_conf = (ahc->our_id & 0x7);
0338         if (sc->adapter_control & CFSPARITY)
0339             scsi_conf |= ENSPCHK;
0340         if (sc->adapter_control & CFRESETB)
0341             scsi_conf |= RESET_SCSI;
0342
0343         if (sc->bios_control & CF284XEXTEND)
0344             ahc->flags |= AHC_EXTENDED_TRANS_A;
0345         /* Set SCSICONF info */
0346         ahc_outb(ahc, SCSICONF, scsi_conf);
0347
0348         if (sc->adapter_control & CF284XSTERM)
0349             ahc->flags |= AHC_TERM_ENB_A;
0350     }
0351     return (have_seeprom);
0352 }
0353
0354 static int
0355 ahc_aic7770_VL_setup(struct ahc_softc *ahc)
0356 {
0357     int error;
0358
0359     error = ahc_aic7770_setup(ahc);
0360     ahc->chip |= AHC_VL;
0361     return (error);
0362 }
0363
0364 static int
0365 ahc_aic7770_EISA_setup(struct ahc_softc *ahc)
0366 {
0367     int error;
0368
0369     error = ahc_aic7770_setup(ahc);
0370     ahc->chip |= AHC_EISA;
0371     return (error);
0372 }
0373
0374 static int
0375 ahc_aic7770_setup(struct ahc_softc *ahc)
0376 {
0377     ahc->channel = 'A';
0378     ahc->channel_b = 'B';
0379     ahc->chip = AHC_AIC7770;
0380     ahc->features = AHC_AIC7770_FE;
0381     ahc->bugs |= AHC_TMODE_WIDEODD_BUG;
0382     ahc->flags |= AHC_PAGESCBS;
0383     ahc->instruction_ram_size = 448;
0384     return (0);
0385 }